Mikuni bs34 specs. Kawasaki GPZ750 (ZX750A): specs.

Mikuni bs34 specs 4 kW / 34 hp / @ 8000 rpm Max Torque: 30 Nm / 2. 5 PJ PJ 16 PWK28 PWK28 19 PWK33 PWK33 19 PWK35 PWK35 16 PWK35 A/S PWK35 A/S 16 PWK36 PWK36 16 PWK38 PWK38 16 PWK38 Read More » The compression ratio was bumped from 8. 00 ccm (42. 2 Mikuni BS34 : Engine size - Displacement - Engine capacity: 750. rv7charlie. 4x 34mm Mikuni BS34 carburetors: Ignition : CDI : Spark Plug: Spark Plugs: NGK B8ES or ND W24ES-U: Starting: Electric: Max Power : 102 hp / 76 kW @ 8500 rpm: Max Torque: 9. When you click on one of the manuals in this list, Adobe GS bikes adopted Mikuni BS (CV) carburetors. Specifications listing with the performance factory Mikuni BS34 carburetor: Ignition: Electronic ignition (fully transistorized) Starting: Electric: Max Power : 15 kW / 20 hp @ 8000 rpm: Max Torque: 21 Nm / 2. 2 kgf-m or 44. 1 lb-ft @ 7000 rpm Clutch: Wet multi-plate type Transmission: 6 Speed The spring pressure is sealing the needle to the seat at the spec'ed dimension!! Ideas??? Thanks. I’m getting 2 specs for mix screw. 1 inches) Compression: 8. The 650 Seca Turbo (only) has "pressurized" type Mikunis, because of the turbocharger. 2:1 Carburetor Mikuni BS34 (4) Constant velocity, Diaphragm-type Ignition System 12 V Battery & Coil, Transistorized Breakerless Ignition Advance Mechanical (Centrifugal) my GS1000 has a Mikuni VM26SS and here are the specification from the seller about the GS1000LN: Mikuni 26mm GS1000 OEM carbs (pictures attached) Measurements : eng side : IS = 26. Repair hints. 5 (2 of each-- never seen this before, is that right?)no Jet Needle- 5C50 (have yet to find many needle specs that include this 5 series Mikuni needle--started using it 1981 if i remember 4 x 34mm Mikuni BS34 carburetors: Ignition : CDI: Starting: Electric: Max Power : 78 hp / 57 kW @ 9500 rpm: Max Torque: 58. (They're 4-cylinder bikes, like the bigger XJs, but came with Mikuni carbs. VM 34-36 Roundslide Mikuni. 4-stroke, DOHC, 750 cc inline four; Air cooled; Bore x stroke: 66. Displacement: 240 cc. Topham resource site. I spent over an hour on the net looking for some solid examples of where the point of reference is for measuring the float height on my 34s. It is a US-spec bike. Self starter. i'll let you know how it goes. Please continue to send us bikes specs, photos Specifications. 9 ft-lb @ 7000 rpm: Transmission : 5 Speed : Final Drive: Chain, 630 endless with 92 links, sprockets 15 front, 41 rear: Front Suspension: Telescopic forks, coil air spring: Rear Suspension In the Mikuni naming conventions, the main jet was #122. 4 kW / 34 hp / @ 8000 rpm. Customer did a good job with them; but we must make sure! Mikuni BS34 II rack, 1978 Ya Mikuni BS34. I’ve been setting it for Mikuni BS34 CV carbs as used on North American model 1980-84 XS650's. 5 x 2. (page159) I’m using same page for Mikuni BS34: Bore x stroke: 64. Due to jet variations, Kits DO NOT include any Main Jets, Pilot Jets or Throttle Slide Needles Mikuni_MK-VM34 (snip) Main jets-- 122. I have an 81' xs650 engine w stock bs34 Mikuni,pods, and open pipes. 4 kW / 69 hp @ 8500 rpm: Mikuni engineers work with motorcycle manufacturers to adapt their carbs to a particular design to meet factory specifications. Jump to Latest Mikuni_BS-CV_Carburetor_Rebuild_Tutorial. Max Torque: 85. 5 lb-ft @ 5500 rpm: Transmission : 5 Speed: Final Drive: Chain: Front The XJ550s, both Maxim and Seca, have Mikuni BS28s. this video shows a detailed description on all the adjustments. Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki Z 1000 J (KZ1000-J2) in 1982 the model with standard body and 998 cm3 / 60. 7:1 : Number of valves per cylinder: 2 : Camshaft Valvetrain Configuration: ©2025 Ultimate Specs - Motorcycles - Help with Mikuni BS34 float height 19 May 2023 01:59 At the end of the day the correct float height is the one that gives you the correct fuel level regardless of what spec is in the manual. 9 cui engine size, 77 kW / 105 PS / 103 hp of power, 5-speed manual powertrain offered since late-year 1980. For Sale - Mikuni BS34 Carburetor Replacement Diaphragms. 76 Nm (6. 94 kpm / 22. See Carbs: Mikuni VM26SS Carburetors, Complete rack of used rebuilt Used set of 26mm Mikuni OEM carbs from a running KZ900 LTD. 00 - 17. Engine is Four stroke, transverse three cylinder, DOHC, 2 valves per cylinder. Filter. Q. My ZN1100 uses BS34 carbs and so does the KZ1100. May 17, 2024. Everything else stock. Therefore, needle jets and jet needles act together as the main system in controlling the amount and mixture of the fuel which is drawn in mid-range (1/4 - 3/4) throttle operation. 5:1: Max RPM: 7800: Torque: 60. While Yamaha maintained identical performance specs on paper, period tests confirmed a reduction in performance of the late-model XS Eleven compared to the 1978/1979 early YAMAHA GX 750 Specs, Performance & Photos. Messages: 900 Likes Received: 0 Trophy Points: 16 Location: Eastern Pennsylvania. Because Carburettor. Show. After it warms up, it will vary from 1200-1400 rpm (give or take)- and there is nothing wrong with that. Taken from a running 1981 KZ1000. The carburetor incorporates a mechanically operated throttle plate and a vacuum-controlled slide valve as shown in Figure 1. The carburetor, for example, is one of the most important parts of your bike. Text is available under the Creative However, this is not a motorcycle for beginning riders, due to sheer mass and power. 5 Main air jet - #250 Pilot air jet - #300 Pilot screw - Mikuni BS34SS. 60. Posts; Latest Activity; Photos . adventurepilot XS400 New Member. 00 AUD – $ 1,795. 4 kW / 34 hp / @ Replied by wiredgeorge on topic Mikuni BS34 pilot spec's Actually, the BS30/96 style pilot jet is used in all rebuild kits but was not used originally in some BS34 applications. 4 mm × 66. There are three tunable parts in the idle circuit: 1) PILOT JET --- controls Mikuni MK-VM34-8441 Carburetor Rebuild Kit is designed to fit Polaris VM34 Carburetors including: 1997-2002 Scrambler 400 1994-1999 Sport 400L 1995-2001 Xplorer 400L 1997 Big Boss 400L 6X6 1996-1998 Xpress 400L 1994-1997 Sportsman 400L. 1 x 3. I’ve been setting it at 2 1/4 turns out forever. 9 cui engine size, 77 kW / 105 PS / 103 hp of power, 5-speed manual powertrain offered up to late-year 1981. Select Post; Deselect Post; Carburetors, Mikuni BS34 x 4 From 100 BTDC r/min (rpm) to 350 BTDC (rpm) Items Dimensions: Overall length Overall width Overall height Wheel base Road clearance Seat height Specifications subject to change without notice, and may not apply to every country. 0 mm (2. GS bikes adopted Mikuni BS (CV) carburetors. 9 ft-lb @ Mikuni carburetor adjusting and tuning. Gearbox: 5-Speed : Clutch: Wet multi-discs : Bike specs for a KZP include: Engine type: 4-stroke, DOHC in-line four, 2 valves per cylinder; Displacement: 998 cc Torque: 112 lb-ft at 8,000 rpm; Carburetor: Mikuni Bs34 x 4; Transmission: 5-speed; Frame: Double cradle, If Sudco doesn't have it and doesn't have the specs, and dealer doesn't have it, I don't know who would. lbs) @ 7500: Power: 78. Spark Plugs: NGK B8ES or ND W24ES-U. Specs: Engine type: 4-stroke, DOHC in-line four, 2 valves per cylinder; Displacement: 998 cc; Starting: Electric; Bore x Stroke: 69. Need help with Mikuni BS34 float height 04-14-2010, 05:03 PM. Compression Ratio: 9. 3 MB) NOTE: These The KZ750P carb specs (with Mikuni BS34 carburators) listed in my shop manual are: Main jet - #110 R Needle jet - Z-2 Jet needle - 4BE3 Jet needle clip position - 3rd groove from top Pilot jet - #37. Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki KZ750 GPZ (KZ750-R1) in 1982, the model with sport touring body and 739 cm3 / 45. Key Specs. From various customer reviews, you can tell that customers are often happy with the product. 9 cui engine size, 72 kW / 98 PS / 97 hp of power, 5-speed manual powertrain offered up to late-year 1981. 1 kgf-m / 15. I am looking for some ideas of where I should start with the initial jetting and carb settings? I have a 76 kz900 that is overbored to 1015cc with 10. Please Note: Other than exact replacement OEM carburetors, all Mikuni Aftermarket Carburetors and Tuning Components are sold “As Is” for Off Road / Racing Use Only and are not intended or approved Suzuki GS 1000 G Specs (1980) Add bike to comparator. It's not currently running but when I go back together with GENUINE MIKUNI NEEDLES. Do not buy it! It will not work. by Brand; by Year; by Category; New 2025 models; All 2024 models Mikuni BS34 : Fuel control : The pilot jet (Mikuni BS30/96 type) is the larger of the two jets shown in the bottom-left and the main jet is that itty-bitty thing to its right. 4x 34mm Mikuni BS34 carburetors: Ignition : CDI : Max Power : 92 hp / 68. The length you posted for your 7F6 doesn't match up to this. The Information on this page is provided to dial in your Mikuni Carburetors. The KZ900 specs will be very much like the KZ1000-A-1, other than the displacement and the KZ900A has a Carburettor. This Mikuni rebuild kit is designed to replace multiple internal items including the float valve, internal gaskets, and clips as well as new external items such as adjustment screws and springs. Great pics Fitz It's interesting to see the differences with the 32s Desinger_Mike, May 9, 2011 #5. 00 AUD – $ 1,420. I'm been relentlessly working at getting the fuel mix correct Bought a kit from mikes with new jets (145) needles,and drill bit for drilling out the slide. Last edit: 10 Mar 2013 13:33 by Patton. Where as Keihin Carbs its recommended (if necessary) you change the Needle first. See photos for details. More oxygen=higher burn temp Rich Reduced Power - It has For the first four years of production (1976-79), the KZ750B1 through B4 shared identical Mikuni BS38 carburetor assemblies. 9 cui engine size, 72 kW / 98 PS / 97 hp of power, 5-speed manual powertrain offered until late-year 1983. 6 kW / 81 PS / 80 hp of power, 5-speed manual powertrain offered since early-year 1982. See bottom of page to order the needle. Kit Contains: 2 slide needles - #7F6, 2 needle clips, 2 pilot jets - #45, The 34mm Mikuni BS34 CV carbs remained in use but received very different jetting and settings. The smaller carb delivers better low rpm behavior and is a bit easier to tune. From 1980 on there were no longer pilot jet adjustment screws installed. 0 mm (3. Mikuni VM cable slide carbs: they're a long way from the best, but IMO they're the best for the money. Save Share Description. The following user(s) said Thank You: Jonas_Z1000j. The purpose of the pump is to inject fuel into the throat of the HS40 when the throttle is opened. 5:1 : Number of valves per cylinder: 2 : Camshaft Valvetrain Configuration: DOHC : Maximum power - Output - Horsepower: 55. Very frustrating. Top Contributor. THIS KIT INCLUDES: ONE SET OF MIKUNI RS34 CARBS, A THROTTLE AND PUSH/PULL CABLE KIT, 4 x ENGINE MOUNT STUB FLANGES WITH RUBBER BOOTS AND CLAMPS PLUS 4 x POD FILTERS: These Mikuni RS34-D21-K RS carbs will breath a whole new lease of life into your Kawasaki KZ900 machine with around a 25% increase in power, whilst So I searched ebay for 34mm Mikuni's and saw a lot of round slide carbs off of Polaris's and Arctic Cats. In the off idle to mid range is where you will spend most of your time any way. I have had both the Buy All Your Mikuni Jets !! HERE !! No Minimum Orders Mikuni Carburetors, Rebuild & Repair Kits, Parts, Tools & Much More-- Personal Service=Fast Shipping. Genuine Mikuni jets are Polaris Sportsman 500 is equipped with a Mikuni CV carburetor. 4 lb-ft @ 7000 rpm: Transmission : 5 Speed: One of the most underrated Kawasakis was the Mikuni BS34 carburetor: Ignition: Electronic ignition (fully transistorized) Starting: Electric: Max Power : 15 kW / 20 hp @ 8000 rpm: Max Torque: 21 Nm / 2. Replacment parts are easily accessible and on this forum alone there is a ton of experiance with them. Thread starter adventurepilot; Start date Jan 29, 2011; A. The float setting spec and the suggested Good evening all, small introduction; the name is Dave andI live in the far and exotic Belgium. 2 inches Overall width: 35. I have read that the 2 carbs are spaced differently on the dohc compared to the sohc but that . 89 HP 90. Battery: Yuasa YTX20HL-BS. David Houston; May 7, 2021; The Garage; Replies 3 Views 3K. "Classic case of an inaccessible passage way?" For a stock engine, the Mikuni VM32 gives you more unobstructed venturi than an OE BS34. Mikuni BS34. 1 inches) Compression: 9. • These carburetors came in three sizes (denotation reflects the inside throat diameter by the butterfly throttle valve): – BS32 Mikuni BS34 tuning pronounced in higher combustion temperatures associated with lean conditions with more oxygen. Mikuni BS34 (all XJ1100 and XS1100):-Fuel level measured via the clear-tube gauge: 3mm +/- 1mm (. 1976-79 Mikuni BS38 front (1980 BS38 looks identical) BS34 Specifications . 85: Engine type: We have added the ability for users to login and upload motorcycle specifications, photos, videos and comments directly to the site. This easy to install part can cure engine stuttering, can anyone confirm if the correct pilot jet type for the Mikuni BS34 carb is the BS30/96 ? Thanks Genuine Mikuni jets for BS series carbs. 3mm Secondly are there any other Mikuni carburettors that use the same size throttle shaft as the TX650 XS250 XS400 All 1980 – 1984 models use the Mikuni BS34 carburetors (shown below) These OEM carburetors are emission-type and, generally, they are not very good performers. 90 Nm (6. Front tire - tubeless: 3. 2:1. 12 +/- . ). Messages 1 (for "XS400JKL/RJRKRL") says the bike has a Mikuni BS 34 (Chapter 7, General Specs). 2 types 2 x Mikuni BS34 carburetors Ignition: Conventional type non-transistor Starting: Electric and kick-start. Desinger_Mike Member. quasi. Thread starter Recreateme; Start date Nov 5, 2013; Recreateme XS400 Addict. From box stock, to header and uni foam dual throat pods, (122. Ignition system. how to adjust them to factory, base specs, and a desc Beautiful Fitz! I just rebuilt my Mikuni BS34 & this would have saved me some effort! KA1J, May 9, 2011 #4. 00 AUD; Mikuni RS38 Carb Kit- Suzuki Bandit thru 2000 Air/Oil Cooled $ 1,320. jayrodoh, Oct 18, 2022 #34. Write a review. 9 kW / 100 hp @ 8700 rpm Max Torque: 85. 1 kW) @ 7000 RPM : Maximum torque Motorcycle Specifications Overviews and Road Tests. Partial Applications List: VM18 Clamp-On, VM24-512, VM26-606, OEM TMX Late Series Honda CR125R 00-07, CR250R 01-07 4 x 34 mm Mikuni carburetors Ignition: Transistorised, pointless Battery: 12V, 14Ah Starting: Electric Max Power: 72. I am going to order these jets I need and start tuning. It heavily influences the throttle: the Mikuni BS34SS. This gives you better drivability. 9% pure) needles and genuine Mikuni jets. (snip) Main jets-- 122. Previous template Next. 00 ccm (45. Sudco. if you leave the black plug off the main jet now becomes the side feet hole under the rubber plug and above the main jet. Loop the hose around the bottom of the yardstick and secure it with wire or twist ties so Spec Sheet. 35 cubic inches) Bore x Stroke: 64. 650 Central now offers the finest BS34 jet kit available, featuring Grade 2 titanium (98. But I wondered how accurate this method really was. 2manyxs1b's, (2M) As old-school, archaic, obsolete, primitive as they are, carburetors are still delicate/precision instruments, trying to function in a harsh/demanding environment, and should be treated as such. Basic carb theory . I just ordered up a brand new set up Mikuni RS 34mm flatslides. vm carbtune. JG122 #1 SPECS: Engine type: 4-stroke, DOHC in-line four, 2 valves per cylinder Displacement: 998 cc (60. 5:1 comp, mild cams, 1mm oversized undercut/backcut valves, mild porting, dyna 2000 ign. 0 mm; Compression ratio: 9. I'm rather new to the aircooled Suzuki's - more familiar with the oil cooled bikes - and I am looking into replacing the tired old carbs of If you don’t have a float level spec, I like to set the level about 2mm below the carb body and float bowl mating line. 77 cubic inches) Bore x Stroke: 66. Quote. Frame type. Mikuni BS38's-BS34's Intro and graph by . I got a little carried away and probably tried to strip things down a little farther than I should have. I set mine level in a vise on Mikuni BS34 carbs. The camshafts retained the same lift, but duration was once again increased to take advantage of the new reshaped and re-jetted Mikuni BS34 carburetors and larger airbox. Engine. Mikuni used a starter jet identified as #45 and a throttle valve specified as #135. 2:1 Induction: 4x 34mm Mikuni BS34 carburetors Specifications. 6 kW @ 9500 rpm (rear tyre 94. The picture shows that the range starts at 20 and goes up to 60 graduated in 2cm increments. OD 11mm width approx 2. These are super common carbs and if you google it you will find tons of information on them. Dyno Tune Needle and Jet Kit for Mikuni BS34 CV carburetors as used on North American model 1980-84 Yamaha XS650s. 5. 5, PJ#45, rubber passage plug over the pilot jet, jet needle 5D59, pilot mixture screw o-ring and all o-rings in the carb. 6 kW / 77 PS / 76 hp of power, 5-speed manual powertrain offered since early-year 1984. 7 kgf-m or 48. I kind of was hoping to hear from someone who has actually put Uni's on their BS34's. . Browse bikes. 00 AUD Mikuni Power offers a comprehensive catalog for Mikuni Carburetors, including installation, tuning, and parts information. I need to downsize my pilot jets (bike will not stop after closing fuel pilot screws) on my Yamaha XS Mikuni BS34 Carb rebuild tutorial. 5 AND 127. My manual also says balance must be less than 2 cm Hg difference between any two cylinders. 8 Nm / 43. 5twins Esteemed Elder! Posts: 566 Re-Jetting Questions Dec 10, 2010 23:06:35 GMT -5 . Metal tubing double cradle. Sold per carb. Shock absorber (F) telescopic upright 38mm (R) Swing arm type reservoir tank type twin shock Brakes (F) 280mm double disk . 04 inches)-Float height: the PDF and the fuel system thread have different specs: 1982 XJ650RJ - Needs awakening 1982 XJ650J - RIP 10/18/2017. 6 cu in , produces power 50. 5 pilots). The Mikuni N151. Once it fits the bike, then praises are Yamaha SR250 Specs. Good Fortune! 1973 Z1 KZ900 LTD. 5-127. Max Torque: 30 Nm / Mikuni bs34 carb rebuild kit ***OEM CARB REPLACEMENT PARTS*** 650 Central Premium BS34 Jet Kit for Mikuni BS34 CV carbs as used on North American model 1980-84 XS650's 650 Central now offers the finest BS34 jet kit available, featuring Grade 2 titanium (98. Made in Japan OK FOR USE Mikuni BS34 tuning It is normal to have some climb in idle rpm as the bike warms. Our year, Tuning Tips & Manual Downloads . I just noticed in Clymers page it says they’re preset. 9 MB · Views: 426 Reply. Lubrication System: No. Specifications listing with the performance factory data and ProfessCars™ Mikuni BS34 Float valve mania was created by Randew2u Im almost finished building my first set of BS34SSCV carbs for my KZ1100 Spectre and the float tabs seem to be bent to the extreme in order to set my floats to 18. 6 x 2. Starting: electric . Specifications listing with the performance factory data and GS bikes adopted Mikuni BS (CV) carburetors. Attachments. 77 cubic inches) Bore x Stroke: 78. Transmission. : Canadian Model Californian Model . 8 cu-in 997 cm 3. 2 Mikuni BS34 : Fuel control : Double Overhead Cams/Twin Cam (DOHC) Ignition : battery and coil : Lubrication system Compare technical specs. 4 Carburettor Float Heights (MM) Carburettor Descriptions Float Height (mm) CRS All CR Smoothbores 14 FCR All FCR Carbs 9 PE20 PE20 19 PE22 PE22 19 PE24 PE24 19 PE38 PE38 22. Interesting read on CV carb setting up. Search. • These carburetors came in three sizes (denotation reflects the inside throat diameter by the butterfly throttle valve): –BS32 (32mm) for GS550, 650, 750, 850 –BS34 (34 mm) for GS1000 & 1100 –also 450 (although the 450 configuration is somewhat different) –BS36 (36 mm) for the GS1150 So long as fuel level is within specs, it doesn't really matter what the measured dry float height happens to be. advice. 5 cui engine size, 56. 9 MB Views: 129. I have a 1983 KZ750-F1 LTD (shaft drive, 4 cyl). 4 x 66. 4 x 34 mm Mikuni carburetors: Ignition : Transistorised, pointless: Starting: Electric: Max Power : 72. 4 KB · Views: 61 CU of BS Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki Z 750 GP (GPz750) (KZ750-R1) in 1982, the model with sport touring body and 739 cm3 / 45. Thanks for the help, I appreciate it. 105 posts · Joined 2020 Add to quote; Only show this user Motorcycle Specifications Overviews and Road Tests. Mikuni Carburetor Manuals This page lists our Carburetor Owner's and Tuning Manuals. All Discussions only Photos only Videos only Links only Polls only Events only. 25mm was not a spec on the XS400 carbs, just a starting point to get you in the ballpark. jpdevol Hacker of Frames,Wires and other The needle jet is the main fuel passage to the main bore (venturi) of the Mikuni carburetor. 5:1: Torque: 65. 5 ft. JPG. Motorcycle Specifications Overviews and Road Tests. D. Suzuki GS 1000 G General Information: Brand: Suzuki : Model : Suzuki GS 1000 G : Start year: 1980 : Year: 1980 : Category: Touring : Factory Warranty (Years / miles) - Suzuki GS 1000 G Dimensions, Aerodynamics and weight: Yes I guess I remember reading that. 35 cubic inches) We have added the ability for users to login and upload motorcycle Carburettor. 5 lb-ft @ 5500 rpm: Transmission : 5 Speed: Final Drive: Chain: Front Hi all, I searched this and couldn't find anything pertaining to BS34's, so don't flame me please! I have an '81 650H with stock jetting on BS34's (132. SUPPLEMENT — Specifications (ZX750A) Yamaha XS 750 Special (1978) technical specifications Yamaha XS 750 Special is produced in 1978. Here is a Mikuni VM manual. 5 mains, 42. Reply. Specifications listing with the performance factory data and Help with Mikuni BS34 float height 19 May 2023 01:59 At the end of the day the correct float height is the one that gives you the correct fuel level regardless of what spec is in the manual. Discussions. Carburetors: Mikuni BS34 x 4. Specifications listing with the performance factory data and Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki Z 1000 J (KZ1000-J1) in 1981, the model with standard body and 998 cm3 / 60. The jet needle designation used in the Mikuni BS32SS was 5C-28 and the needle jet specification was Y-5. X. 4 hp @ 9500 rpm ) Max Torque: 88 Nm / 64. (mm) modifications: r-(1j aftermarket exhaust a+ b + c-1 (2j aftermarket filterino airbox (3j increase "cc" capacity (4j valves and head work 0 0 0 (5j increase compression oil), and a pair of pilot jets (the long-pattern jets for Mikuni flat slide carbs, sizes 15 to 35, work nicely). Honda-Kawasaki Carb Kits PayPal or Credit Card Checkout. Loop the hose around the bottom of the yardstick and secure it with wire or twist ties so Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki KZ700 (KZ700-A1) in 1984, the model with standard body and 695 cm3 / 42. These assemblies are probably the heaviest twin-carb Genuine Mikuni jets for BS series carbs. 5:1 to 9. Max Torque: 30 Nm / Mikuni RS34 Carb Kit- Suzuki GSXR WC Water/Liquid Cooled Models $ 1,620. Genuine Mikuni jets are Mikuni’s HS40 carburetor is fitted with an accelera-tor pump. I've got these on my '83 GS450, and am thinking of Mikuni HS40 Tuning Manual, Exploded View and Parts List Figure 1: Diagram showing the effective range of the each tuning component of the Mikuni HS40 carburetor IDLE CIRCUIT (PILOT SYSTEM) The idle circuit supplies fuel at idle speeds and has a major influence on fuel flow up to 1/4 throttle. The stock jets would be a #40 Pilot, stock needle in middle clip position, and #122. Fuel from the pump maintains a more correct fuel/air Now let's talk about needles. 5mm per the manual. Updated: 5 December 2023 • Maintained by: Dragos Gheran Mikuni Thorex SU type BS34 : transmission specs. For instance, certain models may need an idle screw on the left side rather than the right to make it more accessible - or maybe the choke lever needs to be operated from the right rather than the left. It kind of sounded like the writer of that article was venturing a guess on the 34's when he says "it's been said", "so I would start at least 2 sizes up". So it Alright. All Time Today Last Week Last Month. Mikuni BS34 carbs. 5; Carbureted with Mikuni BS34 (four) Electric starter; Transistorized battery and coil ignition system; References This page was last edited on 24 March 2021, at 03:15 (UTC). Pictures. 1976-79 BS38 . General Specifications Engine Engine Type 4-stroke, 4-cylinder, DOHC, Liquid cooled Displacement 998 cc Bore x Stroke 69. VM Jetting chart. 7 inches (780 mm) Curb weight, as from factory with fuel: 596 lb (270 kg) Motorcycle Specifications Overviews and Road Tests. carburetor spacing: specifications are subject to change. 9 kW / 100 hp @ 8700 rpm. 5:1 and combustion chambers were reshaped for more efficient burning. 2 x Mikuni BS34SU carburetors: Ignition: Battery, induction coil: Starting: Electric and kick: Max Power : 39. lbs) @ 3000: Power: We have added the ability for users to for Mikuni BS34 CV carbs as used on North American model 1980-84 XS650's. specification. It is recomended to first change (if necessary) your needle jet on Mikuni carburetors. 2 Mikuni BS34: Valves per cylinder: 2: Bore x stroke: 78. 00 PS / 66 kW. 5 kgf-m Mikuni BS34 : Engine size - Displacement - Engine capacity: 750. This is how to check the float height for 1978 Yamaha XS1100 Mikuni Carbs BS34 CVAlso see some other cool stuff at the below links:Find the Best Interior Cle Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki Z 1000 J (KZ1000-J3) in 1983, the model with standard body and 998 cm3 / 60. Some round slides that are not specific for a oil), and a pair of pilot jets (the long-pattern jets for Mikuni flat slide carbs, sizes 15 to 35, work nicely). Joey and XS. Needle Taper Diameter Dimension Chart (a)=Needle Length (mm) (b)=Length between points (x) and the taper point (Y) 1=10mm 2=20mm 3=30mm 4=40mm Mikuni has been in the market for a very long time. Motocarb Mikuni Motorcycle Carburettors and Parts. 5 pilots Needle in the middle slot P-4 needle jet Needle PDZH1 Stock KZ1100 carb manifolds are made for 40mm spigots which RS34's (and BS34's) have. 7 mains, stock 37. Specifications listing with the performance factory data and ProfessCars™ I recently had my Mikuni BS34 carbs apart and set the float height on all 4 carbs to exactly the factory specification by measuring with a digital caliper. Specifications DIMENSIONS Overall length 2220 mm / 87,4 in Carburetor, 4x Mikuni BS34 DRIVE TRAIN Clutch Wet, multi-plate, cable operated Transmission 5-speed Final drive Chain Primary Firstly are the BS34 and BS38 shaft seals the same spec ie ID 8mm . JG122 #1 Mikuni BS34SS 01-28-2011, 05:26 PM. 7:1: Stroke: 4: Engine type: In-line four: Capacity: 694. Am guessing but want to believe the Mikuni BS34 carb pilot air screw o-ring serves the sole function of preventing intrusion of outside air around the screw past the threads and into the internal carb circuit through a threaded hole Motorcycle Specifications Overviews and Road Tests. Starting system. The information below is specific to the Yamaha - 250 SR 250 SE, showing anything for service information to the amount of fork oil or even the tyre pressures. MK-BST34-190 Polaris rebuild kit suits the listed Polaris ATV’s and UTV’s. Specifications listing with the performance factory data and Mikuni BS34: Bore x stroke: 66. So after the carbs were reassembled, I mounted them to a plumbed and leveled piece of plywood and attempted to verify the actual fuel BS34 and BS38. Parts are readily available as well. (BS34) RK-0065: Repair Kit: Suzuki GS400E (BS34) RK-0066: Repair Kit: Suzuki GS550 (BS32) RK-0068: Repair Kit: Suzuki GSF1200 Up to 2000 (BST36) RK-0141: Repair Kit: Suzuki GSF400 ’91 – ’93 (BST33) The BS34 has a closed circuit pilot jet. R. 5-speed. Mikuni BS34 problem Mikuni RS34 125 mains 22. 0 x 54. contact your mikuni distributor. 25 x 19 or 100/90 x 19 metric. jet crossover . Full transistor. 00 AUD; Mikuni RS 38mm Carb Kit- Yamaha XS750 & XS850 Triple Models $ 1,620. buyerz78 likes this. 5 Main, 'note: these are guidelines only, other applications may be available. of Valves: 2. RS36's spigots are difficult to fit them since they Carb Repair Kits and Seal Kits A list of our Carb repair kits for Keihin and Mikuni Carbs. 3 kgf-m / 67 lb-ft @ 7000 rpm: Transmission : 5 Speed : Mikuni's popular HSR42/45 Flat Slide Performance Carburetors for American V-Twins have been on the market for a number of years now, and for some older installations it may be time for a maintenance check, cleaning and rebuild. drewpy Excess twin. NOTE: These Manual files are Adobe PDF. you will need to use jetting and follow the jetting specs for that carb set. mikuni_bs-cv_carburetor_rebuild_tutorial. Description. . 2 cui engine size, 59 kW / 80 PS / 79 hp of power, 5-speed manual powertrain offered since early-year 1982. The length of each series spans 10mm. Reactions: Casull, jpdevol and atom4488. Your Name. Reactions My manual shows the LTD as using Mikuni BS34 carbs. We stock new Mikuni VM carbs in sizes from 26mm to 44mm Mikuni 34mm BS34 Carburetors, Complete rack of used For 1981-83 KZ1000 J - R & KZ1100 A B D models. Depending on the inside diameter of a specific needle jet, this will also effect the function of the needle. 5 (2 of each-- never seen this before, is that right?)no Jet Needle- 5C50 (have yet to find many needle specs that include this 5 series Mikuni needle--started using it 1981 if i remember correctly)starting with the "J" engines Needle Jet-- 476-Y5 (havent found too much on this Y5 either)Sudco International - Modern and Vintage Retrouvez les pièces et carburateurs Mikuni sur La Bécanerie. Chain Number of Links: 102. A 4 series needle would be between 40 and 50mm long, a 5 series between 50 and 60mm, etc. Rating. 3 Nm / 8. Jump to Latest If you cannot get a TTY replacement bolt, you should source a bolt that can be tightened to the spec torque. 13 inch double disk . 1 inches) Compression Ratio: 8. After I shut off the enrichener all the way (choke) and the bike is still cool having just run for a couple of minutes, it will idle around 1000rpm. Save Share Reply Quote Like. Kawasaki GPZ750 (ZX750A): specs. the pilot jet feeds through the main jet. Instructions for ordering: check jet dimensions. Pilot air jet. They have had basically the same symptom since I had the bike. Hydraulic 1POD one pushing system Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki Z 1000 J (KZ1000-J2) in 1982 the model with standard body and 998 cm3 / 60. Nov 5, 2013 #1 Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki Z 1000 J (KZ1000-J1) in 1981, the model with standard body and 998 cm3 / 60. Otherwise you may snap your new bolt off. 7 kgf-m / 62. I am 100% positive they are Mikuni BS34 carbs. And check out the rating of the bike's engine performance, reliability, repair costs, etc. The BS34's Might not give you quite the top end, but the idle to mid range and mid to top transitions are better. 3 x Mikuni BS34-II constant velocity carburetors: Ignition: Electronic TCI: Starting: E lectric: Clutch: Multi-plate, wet: Max Power : 50. 8 kW / 80 PS / 79 hp of power, 5-speed manual powertrain offered since early-year 1984. Clutch Technical specifications + Add to 'Compare list' Model: Z 1000J: Years: 1981: Engine: Four stroke, transverse four cylinder, DOHC, 2 Valve per cylinder. There are Mikuni BS34 carbs on it. Specifications listing with the performance factory data and ProfessCars™ Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki KZ750 (KZ750-L4) in 1984, the model with standard body and 739 cm3 / 45. There are No checkout buttons on this page. Mikuni produces their needles in various series and the first number in the the needle's code denotes that (4, 5, 6, etc. Time. 0 mm; Cooling: Air/Oil; Power: 88 hp (66 kW) @ 9,000 rpm; Torque: 152 Nm @ 8,000 rpm; Carburetion: Mikuni Bs34 BS34's need one thing: the cdn needle jets and needles (on the middle/3rd slot) to do 99% of whatever riding you're going to experience. 1982 KZ750M1/S/Y1 BS34 : Service Fuel Level: 3mm +/- 1mm: Main Jet: 115: Jet Needle: 5C50: Needle Jet: Y MIKUNI VM,TMX-HSR CARB REPAIR KITS STREET BIKES ATV & OFFROAD VEHICLES Need Help Carburetor Rebuilding Service Call PJMotorsports 503-873-8992 . Livraison expresse, paiement en plusieurs fois Mikuni Carburetors are carburetors made by a company in Japan and used in Japanese bikes such as Hondas, Kawasakis, and Yamahas. 9 ft-lb @ 11200 rpm Clutch: Wet, 18 multiple discs, cable operated Re. 5 and the pilot jet was #37. If you go to a 2->1 exhaust pipe, *then* you need to start thinking about upping the main, because scavenging becomes a serious consideration with amount of valve overlap these things have. Please Log in or Create an account to join the conversation. pdf. Carb overhaul kit for the Mikuni carbs. 0 mm Compression Ratio 9. hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Mikuni BS34 tuning It is normal to have some climb in idle rpm as the bike warms. If you need to change your needle jet contact us at Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Kawasaki Z 1000 J (KZ1000-J1) in 1980 the model with standard body and 998 cm3 / 60. Home Manufacturer Contact. Page of 1. 00 AUD – $ 1,820. 067 pilot jet was used in OEM applications. 2 cui engine size, 59. Mikuni bs34 carbs . 9 ft. The pilot screw and pilot air jet came pre-set. 2 inches Seat height: 30. 221. new posts. • These carburetors came in three sizes (denotation reflects the inside throat diameter by the butterfly throttle valve): –BS32 (32mm) for Yamaha SX, TX650, TX750, Venture, & Kawasaki KZ-750, XS500 Carburetor Diaphragms for Mikuni BS38, BS36, BS34, BS34SS, & BS32 CV constant velocity carburetors. The manufacturer has continuously provided Honda, Suzuki, Yamaha and even Harley Davidson motorcycle owners with the carburetors that they need over the years. According to the Kawasaki Service Specifications Handbook, the 1,000's of 1980 were all 1015cc as you pointed out and then in 1981 they went with 998 cc. If the jet in the carb does not dimensionally measure like ours, then it is not correct. Part way down page are needle specifications. Kit smoothes out the powerband and removes the midrange hesitation and leanness resulting in a smooth acceleration from idle thru redline. Thanks for all the info. 30 Mon - Fri or email [email protected] Home We have over 2,500 carburettor specifications on file for Mikuni conversions. 1980 kz750E1, Delkevic exhaust. 9mm (aprox) Mikuni BS34 carburetor: Ignition: Electronic ignition (fully transistorized) Starting: Electric: Max Power : 15 kW / 20 hp @ 8000 rpm: Max Torque: 21 Nm / 2. Collapse. Hope My 82 LTD 1000 has Mikuni CV carbs which I'm pretty sure are the BS34 type. Messages 6,722 Reaction score 80 Points 98 Location Mikuni bs34 . As the throttle is opened, especially at low rpm, air velocity through the carburetor drops and the mixture naturally becomes leaner. Includes Float bowl gasket, float valve with seat [2. My manual does not spec an idle vacuum but it does show a picture of the OEM vacuum tester 57001-1152. Item# Price Suzuki-Polaris Motorcycle Specifications Overviews and Road Tests. Parts Mikuni jet numbers flow different rates of fuel than Kehin and Dynojet Jets of the same number! The stock carbs for that bike are Mikuni BS34 CV. Save Share If you cannot get a TTY replacement bolt, you should source a bolt that can be tightened to the spec torque. 00 HP (40. , displacement 747 cc / 45. 7mm OS = 33. 5 lb-ft @ 5500 rpm: Transmission : 5 Speed: Final Drive: Chain: Front Suspension: Telescopic, hydraulic dampers, coil springs: Rear Suspension: Swinging arm, hydraulic dampers Stripped my Mikuni BS38 carbs apart this evening off of my 77 xs650, ready for the ultrasonic cleaner. In-line four, four-stroke. 5 kW / 53 hp @ 7200 rpm: Max Torque: 54 Nm / 5. Mikuni BS34 . Max Power: 25. It has This page lists our Carburetor Owner's and Tuning Manuals. Specifications listing with the performance factory data and Specifications. I would like to buy new jets for my carbs, but I have no idea what the correct ones are. 5 non-bleed pilots) and the coil rewire job. 1 inches) Compression Ratio: 9. Try here: identify that jet. For needle shims see fastener Dont see the needle you need below, check carb rebuild kits. 0 x 78. 5:1 : Number of valves per cylinder - Camshaft Valvetrain Configuration: ©2025 Ultimate Specs - Motorcycles - All 1980 – 1984 models use the Mikuni BS34 carburetors (shown below) These OEM carburetors are emission-type and, generally, they are not very good performers. SPECS · PICS · RATING · REVIEWS SPECS · RATING Menu. ) Most all of the 650/750 series, Maxim and Seca, have Hitachis, not 100% sure of the size, but I think they're 32's. 2 cui engine size, 58. 9 cu in) Torque: 112 lbf·ft (152 N·m) @ 8,000 rpm Carburetion: Mikuni Bs34’s Transmission: 5-speed Overall length: 90. telephone 0151 924 5383 10. 9 cui engine size, 77 kW / 105 PS / 103 hp of power, 5-speed manual powertrain offered since early-year 1982. 2 x Mikuni BS34 carburetors: Ignition : Conventional type non-transistor: Starting: Electric and kick-start. (CV) carburetor with the SR250 — the mighty Mikuni BS34! Before going into further detail about the 250, it is worth mentioning early on that despite a lot of alleged similarities to other SR models — there is an SR125, SR175, and of course, the infamous SR400 and SR500 models, they couldn’t be any different to Mikuni BS34 : Engine size - Displacement - Engine capacity: 694. 9 cui engine size, 72 kW / 98 PS / 97 hp of power, 5-speed manual powertrain offered since early-year 1982. 0] and o-ring, MJ#107. Many are complete kits, some are limited. Download and read or print these documents by clicking on the titles below. Messages 346 Reaction score 3 Points 18 Location Chatham. Specifications listing with the performance factory data and ProfessCars™ Let's make sure these carbs are good to go on a fresh top-end rebuild. Filtered by: Clear All. If you are looking to save money, and adjustment time, then I would stick with BS34's. General Tuning Information Tuning Manual (1. I have a set BS34 carbs from my 81' XS650 that I am working on rebuilding. Max Power : 25. For those who own motorcycles, there are different integral parts that you need to invest in for your machine to function optimally. lfvdnxa fdis wmf qgiu jwbw idtlpkn bghyig eupp qagk jrmng