Honda cb750 dohc carb swap Only available with Outlet Diameter at the engine side of 40mm, 55mm at the air-cleaner end and 100mm front to back. 50. 1981 Honda Cb750 Cafe Racer 9 295 Tank Automotive. I definitely have some work to do on my end before this kit can Enjoy the first ride and impressions on this cb750 AFTER the Carb install from Murrays Carbs. Jan 4, 2021 Keihin CR Special 29mm Carburetor Kit for Honda CB 750 / 900 DOHC. The problem is cylinder 1 Swapping Carburetors From CB750F to CB750K Keihin | Carb Clean & Rebuild | Honda Project | Part 17In this episode, I cleaned and installed a set of round top Feb 13, 2013 · The DOHC CB750 does have a disk brake design similar to this along with the elimination of the fender braces, so my bike is just a couple of years ahead of its time. Burned valves or low compression is common under 20k. I picked up a '80 Honda CB750K this week with the ambitious goal of turning it into something like the Wrenchmonkees bike. If you read ANYTHING on the stage 3 setup it is ONLY for competition and with a header and non-stock engine. Messages 156 1980 CB750K DOHC vb42 carb - outer right, number 4 cylinder Views 731. Clean 4. Aug 14, 2011 · I am beginning to explore otions for a cb750 build. Please Note Year, Make and Model after order. I have read that certain cb750 and cb550 carbs can works but with little specificity as to which years. FR-041 $219. Apr 17, 2011 · 3) Carb sync tool TOOL SET B 1) Auxillary fuel tank 2) Carb sync tool In order to use the bike's tank, I have to swap out the fuel hose. 5 68/102 35 NA 11/2 A= 72mm (spacing centre to centre between carb 1 & 2) B= 88mm (carb 2 & 3) C= 72mm (carb 3 & 4) Option 3- Suits Honda CB500 four. Welcome, Guest. Jun 14, 2022 · Enter the January Vintage CB750 gift certificate giveaway! It's easy Click here, post something, and you're entered into the drawing! Apr 28, 2022 · Hi, I have an 81 cb750c with 3,800 miles that I bought as a winter project but I cant quite get it running right. Ideally I would like to get away from the 81 CB650 carbs (VB44A) with pressed in pilot jets, which are harder to find anyway. I was hoping for the carb specs of the internal guts of the carbs. The other three screws on the other three carbs are a unique screw style screw head. If dohc carbs yes, airbox needs be installed. I want to empty out the center section. Bank breakdown 2. Oct 4, 2022 · Hello I have a 1980 cb750 that sat for a year. The engine is tuned for IR and not having it screws the tune up. I need to still do more tinkering with it like adjusting the valves, but it does run pretty well. Includes VM36 Mikuni carbs, custom intakes, throttle cable, T fitting, fuel line, and USA-made air filters. Euro carbs don't have the US spec accelerator pump on the #2 carb. Also the plates on the left carb is on backwards. You can use the time stamp to see that Nov 16, 2023 · Hello I have a restored Honda CB 750 Custom from 1981. The fuel pilot screw my third carb is what looks like a brass cap screw. Found CB750 sohc Cyclex twin carb conversion comes with alloy manifold and 2 new Vm 34 carburators used once for less than 50klms,will only fit bike with modified tank or May 25, 2023 · So I picked up a set of pipes for a CB750 SOHC at a swap meet for a low $75. I used a set of bst38ss from a German model 1993 GSXR750WN the only jetting I had to change was to open up the main air jet 2 sizes. This is a Dohc motor. jasonscb750build; Mar 2 Hi everyone, after 2 years of beating my heads against the wall and sending my carbs to almost every "vintage Honda guru" in LA, I finally got my CB750C DOHC to run with pods (and CM air box). Messages 17 Reaction I would like to put pods on my bike. looking to keep the DOHC . I'm looking at either rebuilding or having these carbs rebuilr by someone with alot of experience. The "highest level" carburetor combo kit for the great Honda cb750 SOHC superbike. harley metisse. Enter the September CB750 Supply gift certificate giveaway! It's easy Click here, post something, and you're entered into the drawing! dohc engine Replies: 7; Forum: The DOHC Garage (1979-1983) B. There are several available in the aftermarket though. May 27, 2013 · I getting mixed messages, I have an 82 CB750 and I'm running a free flowing exhaust and no air box. I have a few solid ideas in my head as to where I want to go with the Jun 10, 2015 · Honda CB750 DOHC (1979-1983) Discussion. I've been wanting a CB750 for many years now but it was never a good time. I have a 1980 CB750C and I just rebuilt the carbs. I have the rebuild manual but not to sure if I can hang. I have bought an 1981 CB750c four custom Honda and have had the carbs gone through with kit for the bottom side (jets,orings etc) then turned around and replace air chut off valves and throttle tube orings on the set. Jan 4, 2021 · The DOHC Garage (1979-1983) Twin carb conversion. 5 110 35 NA 79-81 CB750K/C VB42A 3 15. Thread starter Hippie459MN; Start date Aug 12, 2014; Tags carburetors dohc Prev. The clearance has to be opened up to 4-6 to make them live. Honda CB 750 Custom Rattling Engine Noise Apr 7, 2025 · Honda CB900 DOHC VM326 Mikuni. Apr 7, 2025 · CB750 DOHC 79-83 Honda Mikuni Carburetor Kit | New complete VM34 Carburetor Kit dual vm34 setup for your cb750 DOHC beast! ( 79 through 83) Fits stock frame-No cuts-no mess-just bolt up and hammer it ! Use you stock rubber inlets ( if you need them we have them) We are proud to introduce the best DOHC 750 kit. I'm having issues with my current set up( won't name names but ), I've been told a few things but the bottom line is before I spend the money. Our kits are comprised of Viton rubber parts, real Japanese made JIS screws just like OEM, and Vessel JIS bits. Thread starter chopper750 CB750 Sep 17, 2023 · I have a 96 CB750 F2V (Australia) and the first thing that needed attention was the leaky dirty carbs, and the rubbish in the tank and fuel tap. 2 big knuckles. (please specify) Jul 22, 2013 · I have a stage 3 jet kit in my 1981 cb750 with pods with a 4 into 1 exhaust. The screw has a 5mm x . I already have to tear down and rebuild the engine and figured that some of the work for a conversion like this would be easier to do while I'm rebuilding. of riding the idle jumped to 6k. Anyway the DOHC CB 750s are known for really bad electrics. So the air box has to go. Nov 19, 2012 · In your top picturethe linkage arm on the right carb is on the wrong side of the linkage arm on the left carb. Adjustment, testing and troubleshooting Basic Carb Terms The carbs are numbered the same way as the cylinders on the bike – 1 through 4 left to right as you sit Mikuni RS 34mm Carb Kit – Fits Honda CB750 DOHC | 1979 and Up Upgrade your Honda CB750 with the Mikuni RS34 Carburetor Kit – a high-performance solution for DOHC inline-four models from 1979 and later. Your description of the main would be a "240" which is only one very small piece of the puzzle. New posts Search forums May 28, 2016 · Backfiring / Timing / Carb issue CB750 If not you can swap the two condensers and see if the problem transfers from 2-3 to 1-4. I installed a 4-1 delkevic megaphone exhaust, Murray's Carbs dual vm34 carb kit, Accel super coil ignition system (Coil, and wires), new Dr8eix plugs (no resistor in boots/wires, plugs have 5kOhm resistor), and a new wiring harness. Rated 5. Messages 479 Reaction score 2 Points 16 Air Boxes, Carb Swaps. without acceleration pump in the carbs, but otherwise same mechanics as in the American version, as far as I know). it was leaking gas so i took to a local mc shop. One thing I was looking into is converting the bike from carbs to fuel injection. Feb 26, 2025 · Hello all This is my first post in the forum, but have been an occasional reader for some years now. I've seen brand new ones set at . Carb rebuild 5. Thursday And Almost The Weekend Carpy S Cafe Racers. Take us through the build of the bike. The steps to set the Author Topic: cylinders 1 & 4 not firing on '78 cb750 (update: lead to #3 carb fell off) (Read 6621 times) 0 Members and 1 Guest are viewing this topic. 5 115 35 1 11/2 78 CB750K PD42B 2 14. CR carburetors are designed to offer a performance increase over stock production carburetors and have proven this by many Super Bike wins. Best of the lot. spjr2222; Jul 3, 2013; Replies 0 Views 9K. They Aug 28, 2020 · Can anyone recommend a carb rebuild kit for a '79 CB750F Super Sport ? I have been told the '79 is *unique* in that it had metal tabs on the floats and "will need a flat top needle and seat", so I wanted to make sure I get the correct product. Thanks! Aug 19, 2023 · 5. Apr 14, 2018 · Randakks is well known through GL owners for the quality of these carburetor kits. Will a Chain drive CB750 DOHC Engine Bolt into a SOHC Frame?, With Modification? If so, What? For Example a 1982 engine in a 1972 frame? Did the Frame evolve for the most part CB750. After some tinkering we noticed that one of the lock bolts on a sync adjustment screw was stripped (I hope the phrasing is correct). It’s one of the all-time greats, and was a game-changer for the Japanese motorcycle industry. Mine broke a rotor at 3K miles when brand new. Honda Cb 750 Best Honda cb750 spacing in the industry. You wouldn’t want to mess with a good condition SOHC machine from the 70s, but the later generations were a bit of a mixed bag. If you require further information or images on this set of carburetors please fill out the contact form below. Sweet deal in my books. Easy to start. When I ran into this one I had jump on it. loser. I'm not buying that. Quick View. I also sourced bits and pieces from other places on Ebay as I went Each carburetor kit goes through rigorous testing during development to ensure we are delivering the best carbs on the market. Apr 12, 2023. If valves have never been adjusted then I can almost guarantee that valves are being held open. 001" by the 600 mile initial new bike check and those already burning. First off- cleaned, took things apart, secured everything else, and attempted to start 'er up: engine would only run on Choke, and spewed gas from carb 2/3 area Honda CB750 DOHC (1979-1983) Discussion. Jun 14, 2016 · The SOHC won't strand you in the middle of nowhere like the DOHC can due to the crap rotor thing. they rebuilt carburetor, charged me $800 and now say that there is a brass rod that they cannot find. PRE-JETTED AND READY TO RUN . That's the fundamental issue I have with the current setup - nothing learned from all of you experts applies to my carb setup, so it's a big unknown. Does this mean that the Mikuni's flow better than the Keihin CR's perhaps? Jan 14, 2016 · Here is a link to a CB 750 forum that covers the DOHC CB 750s. m. 004", and many of them burn valves at . Many times you are lucky to get 20000 miles out of them. I ended up checking and resetting the other drain screw and found that carb #2 was barely dripping fuel when the screw Randakk's is the leading destination for Honda CB750 DOHC Motorcycle Parts. Carb overflow tubes. You would have to mess around with jetting them for the smaller 750, just another hassle that really sucks with those carbs. These kits are well appreciated on the race circuits also. Steve Carpenter TRIUMPH T100 Custom Build for sale This Pin was discovered by Ernest Ho. The rest are copy and paste from the internet. @CB750 I am looking for a workshop manual book for the Honda CB750 DOHC 1979, but I These frame splice kits are installed to help remove Honda CB750 (69-78) top ends and motors. Messages 3 Reaction score 0 Points 1 Pretty much the full run of all things early Honda DOHC '79-'83. com is dedicated to the Honda CB750 SOHC and DOHC motorcycles and to their owners who love to ride, restore, and customize them. I want to know Mikuni RS34 or Keihin CR31's, do any of you have experience running these on your DOHC Nov 28, 2015 · It has a little over 30,000km on it and runs solid. The big dome on top of them. The carbs weren't too bad but check the seals on the pipes and T-joint between the carb bodies. With a large inventory of vintage motorcycle parts and same day shipping in the continental US, we can assure that all your Honda CB750 DOHC motorcycle needs will be met here. I'd appreciate any guidance and advice. Chains with tensioners, pistone rings, valve seals, pans and bushings have been replaced in the engine. Discover (and save!) your own Pins on Pinterest Aug 3, 2021 · carbs cb750 1980 cb750f chopper chopper carb 750 fuel custom I've seen where you can direct swap the 630 sprockets and chain to a 530 sprocket and chain without Carburetor Specifications U. Yesterday at 1:54 does anyone know if the dohc carbs and exhaust will fit the sohc motors i bought one and didnt come with either carb swap. Then I purchased a set of mikuni bs38's off a '74 XS650 for short money that had just been rebuilt. G. Im building it brat style. Another thing that is a problem area is the cam chain Oct 17, 2013 · Hey guys I know this sounds like a dumb question but bare with me. Sep 12, 2021 · To recap: got an '82 CB750C project to work on, traded a laptop I didn't use, and ~$30 for a uHaul trailer. Mar 31, 2025 · YES omg i´ve seen ur vids, lol i had actually watched ur vid on the unboxing of murray´s carbs recently, super helpfull by the way, I actually did end up going with a twin carb setup except i decided to make my own cause I wanted it and i wanted it now , i made a 3d printed manifold and I got two PWK34B carbs, i still have to print two gaskets but i test fitted the carbs with the manifolds As for carb support, the stock insulators are pretty strong when they're tightened properly. The box creates the vacuum which is what lifts the carb slides. 1993 HRC RS125 | 1984 NS400R | 1974 Honda CB750/836cc (Calendar Girl) | 1972 CB 500/550 Yoshi Kitted 590cc | 1965 Honda CB450 Black Bomber | 1972 Suzuki T350 | 1973 88cc | Z50/Falcons Jan 21, 2015 · CB750 Addict. The SOHC being the grandfather like said is a keeper, while the more intense maintenance issues of the 'better' (riiiiight!) DOHC have launched it down the path that Honda has chosen for UJMs today. CB750 Models 1969-1983 Year Model Casting # Type Float Main Slow JN Screw 69-76 CB750K B750A & 7A 1 26 120 40 3 1 657A 1 26 110 40 4 1 657B & 086A 1 26 105 40 4 1 77 CB750K 41A 2 12. Your carburetor kit will be delivered pre-jetted, and synced to your motorcycles specifications. Well being one of Honda's better ideas the C's have plastic non adjustable Honda CB750 DOHC (1979-1983) Carburetor Kit | Mikuni VM34. Beining that there is an abundance of cb750 and 550 carb racks on ebay, I thought it was worth exploring. Over 35 years of experience working on vintage motorcycles, with a speciality in Honda SOHC/4 with a focus on the CB750 and other models as well from 1966 - 1985. New posts Search forums. Black Belt Honda Cb750 By Reborn Motorcycles Bikebound. The Valentino Dustin Kott S Honda Cb750 Dohc Bike Exif. Twin carbs on a DOHC are a quick 10 hp. Thanks Brandon. With the bike on its kickstand a steady drip drip, bike upright a very steady flow of fuel came in. The engine is a CB750 block bored to 890 cc’s with a wiseco big bore kit. The stators and rotors go out all the time. CB1000 Honda CB750 DOHC, CB900, CB1000 and CB1100 Media Sealing kit Get in touch about Honda CB750 DOHC VB52A Carburetor Set. It has CB900 camshafts. We took the carbs out and replaced it. I don't want to invent the solution Jan 13, 2017 · Cutting OEM pipes is a good way to lose 10 horsepower. BAHNST; Sunday at 10:18 PM; Replies 6 Views 281. Amazing driveability. The Honda 450A's lose a roll on contest to the Suzukimatic 450's due to the Suzuki's much longer stroke, giving more torque over the Honda at similar weights. This kit includes a new rack of genuine My carb is a VB42A. I have a 1982 CB750K DOHC European version (i. from a 1980 Honda CB 750 C fit a 1981 Apr 20, 2023 · Good morning! I have a 1980 CB750F, my buddy has a CB1100F and says that I can swap the ignition coils and wires from an F2 for an "easy plug and play upgrade. I currently have stock main jets on the carbs (115) what size main jet should I get? I also have (38) slow jet size. Jun 16, 2020 · hello cb750 friends -- how do I remove the stock air box on a '79 CB 750F SuperSport DOHC ? Do I have to remove the carburators first ? I'm in the process of installing a smaller custom-fabricated air box. Some say by the time you have refurbed a set of 15 year old carbs and sorted out the jetting you may as well have bought a new set of fcrs or the like. Fatter rim, or a CB750 SOHC 18" rim, or a custom fat rim like I'm paying for right now, and you're well on your way. Thoughts?? - ChopCult Jan 29, 2013 · Since I run 450A's as well, the weight of the 750A's is a handicap against the lighter, smaller twins. The pods another 10 so now making as much as a Honda 550 maybe. As I understand it, what has worked for early DOHC running pods is: stock idle 80 main 120 secondary 2. " Would I have to retune/advance the timing or do anything else if I were to perform this swap? Any advice would be appreciated. 750_cafe; Apr 15, 2024 The DOHC Garage (1979-1983) 1971 CB750 1980 CB750 1996 Honda CBR 600F3 2006 GSXR 750 1987 Buick Grand National. Bank rebuild 6. Reply. Why the Honda spec sucks. bottom of each Hello everyone. Ignore anyone that even mentions pods instead of the May 9, 2013 · 1982 cb750 cv carb swap to pd style carb. My question has to do with the bike being a "Frankenstein" build. Aug 24, 2023 So here's part 2 of the assembly, I know it's pretty long but I think I covered all the major stuff including timing. those experienced CBX750/CB750 DOHC owners. The front from the DOHC 'K wire wheeled version is an 18" too, but only has one disc. Note the rocker arm cover. (shrugs) Stuck with the stock carb(s) on my DOHC CB750's, and the stock airbox. After a bunch of frustration with my carb overfilling, #1 on the rack, on my 80 cb750C I have come to terms that the float is out of adjustment. (or dont wsnt to be bothered) i know there were carburetor gurus on this site before. e. Legendary carburetors for the high performance motorcycle world. Forums. Mid range sounds like a problem with your needles and/or valve pistons. 002"-. I have the haynes manual and workshop Manual and the carbs fitted to my bike are different. The DOHC Garage (1979-1983) 1982 cb750 cv carb swap to pd style carb. A= 77mm (spacing centre to centre between carb 1 & 2) B= 77mm (carb 2 & 3) C= 77mm (carb 3 & 4) The DOHC Garage (1979-1983) Carb swap on 79 DOHC. deafcaferacer Honda CB750 DOHC (1979-1983) Discussion. The 650 design started using 550 major points in space and why that was easier. Aug 12, 2014 · Give up on the SOHC carbs on a DOHC, I looked pretty close and carb spacing issues are only the beginning of it. I definitely have some work to do on my end before this kit can Mar 26, 2011 · To my surprise, I found that while most of the parts were rebuilt, the bike was completely disassembled. Randakk's is the leading destination for Honda CB750 DOHC Motorcycle Parts. 003" be at . MilfordCubicle; Im looking at going to a dual carb setup for my 78' 750k. Jul 1, 2022 · I went with the Murrays DOHC cb750 Dual Carb Setup and got rid of my stock cb carbs. May 17, 2023 · Honda CB750 DOHC (1979-1983) Discussion. they ran just fine, except carb #3 (#4 by firing order), which had a nasty habit of unscrewing and dropping the needle into the float bowl. 1; 2; First Prev 2 of 2 Jan 17, 2018 · First of all hello to all CB750 users and riders New here - will introduce myself then - coming from Poland, riding Hondas since 20 years - my first bike CB450s still by me Now riding also a CB750 from 2001 - turning it into cafe racer. H. Jan 29, 2013 · Many have done the swap some happy some not. Kinda like a HD knuckle head looking. Thread starter tryku33; Start date Nov 6, 1980 cb 750 tuning. Only the 1978's and the 1969's, and (two)1972's are mine. But I'm eager to get her done. I would also like to replace the bolts with Allen Jun 7, 2016 · Engine families come into play there, how you switch 160-200 Honda, 250-400 Kaw, 250-350 Yam, and 750-1100 DOHC with almost bolt in or true bolt in and no custom parts needed. See where the fuel line reaches. The DOHC Garage (1979-1983) In theory a single carb well designed manifold should work about as well as 2 carbs. All CB750 enthusiasts are welcome regardless of where you are from or whether you are into CB750 choppers, bobbers, cafe racers, drag bikes, or restorations Guys, I'm looking for vacuum fittings I can use to connect gauges to my bike to synchronize the carbs. It's not a screw you're going to be adjusting on the fly on a multicarb bike anyways. Carb breakdown 3. Keep in mind you will lose the vacuum actuator that bumps up the idle when you drop it into gear but its not a huge deal, may just have to bump the idle a tad or maybe modify it to fit if your good with building brackets. after about 30 min. Contrary to popular belief not only do they work but they work very well if you take a little time and put a little logic into your thinking. GNGSXR. Enjoy the first ride and impressions on this cb750 AFTER the Carb install from Murrays Carbs. any for CB750, CB1000 and CB1100 with slight differences, which will be noted. The bike also has a few other improvements over the original as well: Mikuni RS 34mm Carb Kit | 1969-1978 Honda SOHC CB750 Four K | 1969 to 1978 CB750 SOHC Mikuni flatsides. Reply Mar 27, 2015 · for stock bike I would stick with the 750 carbs. But since I didn't have one, I pulled out the fuel hose. CB750 Member. We do not sell any used parts. com/product/cb750-mikuni-carb-system/ See how I Feb 25, 2010 · I picked up a '80 Honda CB750K this week with the ambitious goal of turning it into something like the Wrenchmonkees bike. Mar 22, 2009 · I pulled the 2-1 intake and the carb, re-installed stock carbs, and she started instantly and ran very well, except WOT. Nov 6, 2020 · 1980 cb750f super sport carbs swap. i believe they are a Kiehin carb but mine have a different top than in the Haynes manual and different than the one shown in the workshop Manual. Jul 16, 2023 · cb1000 cb1100 cb750 cb750f cb900 cb900f dohc engine swap Replies: 1; Forum , I got a 1979 Honda CB 750k (Fancy-schmancy 10th anniversary edition) Anyway i’ve Aug 24, 2023 · Or are there any slick ways to install a factory airbox and make it look decent? And on the other end, if I need to buy a carb rebuild kit, jet kit, and a new filter system that could easily be 1/2 the price of just getting new carbs for the bike and I might still not have it right. Removing Motorcycle Headlight and Handlebar Swap; Honda CB750 Headlight Rebuild; Repairing Switchgear and CB750 Handlebar Wiring; Motorcycle Wiring Harness Repair – Honda CB750 Restoration; CB750 Carburetor Rebuild; Setting Valve Clearances on a Honda CB750 Restoration; Setting Initial Ignition Timing on a Motorcycle. Lifetime tech support included. The problem is that when I start the motorcycle on the choke, even on warm days, for May 20, 2021 · I have a Honda CB750 Bol d'Or motorcycle (1982, DOHC, RC04) with Keihin CR31 carburetors, zero resistance filters, straight-through exhaust (4-2) and Dynatek 2000 electronic ignition installed. The kits don't work well at all on the early DOHC and commonly better without them at all. Feb 14, 2025 · I have a recently bought a1978 f1 uk specification. Typical internet wisdom says the stock carbs hate pod filters and that keeping the airbox is the only way to make the bike run well. Honda Cb750f Cafe Racer Lainey Bikebound. CB 750 KZ DOHC - Knocking noise. Jan 5, 2014 · CB750 Addict. Honda CB 750 550 500 400 350 Carburetor Rebuilding Site Honda CB750 DOHC CB 750 C Electrical Wiring Harness Diagram Schematic 1980 1981 1982. Garry CB750 New member. Brand: Randakk Master Carb Overhaul Kit® Color/Finish: Natural Material: Rubber/Steel Fits: 1980 - 1983 Honda CB750 / CB900C DOHC Models Notes: No Jets / Jet Needles Are Supplied No Float Valve / Seat Assemblies Are Supplied. But it is especially noticeable at idle. This café racer comes Dec 4, 2017 · Hi all, I finally took my 76 out on the highway, but I hate that it runs at 5500 rpm at an I dictated 77ish mph, as far as I know it has stock front sprocket, the rear is a 48 so that should be stock size, I'm running a 130/90-16 tire on a henry abe wheel, what would be a good swap, put the Jul 28, 2013 · The project is my 78 CB750 that I totaled back in October and luckily had bad luck selling. Please login or 1977 Honda CB550K 2018 Indian Scout Brand: Randakk Master Carb Overhaul Kit® Color/Finish: Natural Material: Rubber/Steel Fits: 1980 - 1983 Honda CB750 / CB900C DOHC Models Notes: No Jets / Jet Needles Are Supplied No Float Valve / Seat Assemblies Are Supplied. CB750 Guru. This is how it looks now: I want to use Keihin CR carbs and K&N pods. Messages 1 Reaction score 0 dirtdigger thank you . Replaced the boots on both sides and I still cant get a vacuum check on number 4 carb when trying to sync them. 1979 Honda Cb750 Dohc X Custom Cafe Racer Build Walk Around Motorcycle You. I love the frame lines of the DOHC CB’s, and I knew I could make a sweet cafe out of it, so I bought it. Jan 20, 2018 · This entry was posted in Blog, General Info and tagged Carb Rebuild, carb Refurbish, carburretors, CB500, cb550, cb750, cb750k, Honda, inline four, sohc. I think they will swap but from what I have read the 900 carb is just a hair bigger and jet calibration is different. Now on hindsight, I could have just gotten a hose connector or hose joiner to save me some time and trouble. Feb 22, 2023 · -new carb boots-the throttle linkage is bottomed out (meaning the throttle linkage is not being pulled and at idle)-the carbs have been bench synced-the carbs have pod filters which I know it will probably not run "right" but I can't see that being the reason for the redline at idle Feb 12, 2023 · I’ve seen things here and other places about doing a front end swap from a GL1000. In particular, DOHC bikes from the 90s are fair game—like this 1993 CB750 Nighthawk. For example, a polaris Ultra snowmobile has a mikuni 38mm roundslide carb with ~410main jets. Which Honda switched to in 79. I can provide full specs of this carb from racing, etc. May 3, 2022 · So due to me running across a dual cam bike with no stock airbox and pod filters being my only immediate option I was forced to make them work. fuel in oil and suspected carb issues. Enter the September CB750 Supply gift certificate giveaway! It's easy Click here, post something, and you're entered into the drawing! Apr 7, 2012 · The 'K is a 17. The seats on the Kehin VB52BB, VB52EA, and VB52EB carbs fitted to late-70s and early-80s, Japanese domestic market DOHC CB750 F models are a perfect example of this. If you look close or compare splice kits from the past 50 years, you will notice how our kits "interlock" and do not rely on only the bolts. Aug 10, 2016 · Bought a 1977 CB750F Super Sport and I think it had a motor swap, need help identifying my motor to apply the proper fixes to have it road ready. 002", been there myself. Apr 17, 2017 · Any carb rebuild parts from '79-'83 Honda DOHC will pretty much work except for the jets, which need to be 750 jets. 5 68/102 35 NA 11/2 82 CB750K VB42AG 3 15. It's a DOHC modelI originally wanted an early model over the DOHC but I couldn't pass it up either way. Murray’s Honda CB900 DOHC Carburetor Kit Includes: 2 Pre-Jetted Mikuni VM36 Carburetors 2 Custom Tuned Intake Manifolds Jun 21, 2019 · The standard 750 carb swap has been a common and good running swap for ever. Genuine VM34 Mikuni tuned to your cb750 SOHC Honda Fits stock frame-No cuts-no mess-just bolt up and hammer it ! These come with 76-78 Intake isolators which must be used . The bike came with a dohc motor and has its flaws. Just picked up a Honda Apr 26, 2020 · Honda sped that up by saying in the service manual that the valves set at . Jan 18, 2021 · Hey 👋, So I'd like to start by saying this is my first honda cb750 build. Jan 17, 2024 · The AF screw is on the engine side of the carb, so it controls fuel, not air. Hello there, new to forum but frequent visitor. A little fuel had come off from one of the drain screws on carb #4, so I worked the screw a little and it stopped. Sep 7, 2021 · Nope, Honda spec for the valve clearances is way to tight and they can burn valves very early in their life. New posts Search forums May 29, 2019 · 1982 CB750c all stock. This Mikuni RS34 carburetor kit is designed specifically for the Honda CB750 Four Single Overhead Cam K Sep 4, 2023 · The DOHC Garage (1979-1983) clogged) and carb sync. The motorcycle has undergone a major renovation. 8 thread and I haven't How do you adjust the CB750 '77-'78 idle mixture screws? SOHC/4 Owners Club Forums. I bought spares from IMPEX Japan. CB750F-21XXXXX on frame CB750E-26XXXXX on engine block Found these VINs for the K series engine blocks 1976 K series engine CB750E-2428762 Mar 29, 2022 · Note the CVcarbs. . The problem is a rich mixture on all modes. Feb 8, 2017 · Started to diagnose what could be wrong. Now apart from that, my confusion stems from the fact that the recommendation for carb improvement on my other infatuation, Suzuki's magnificent GS1000, (and Kawasaki's Z1 900 or Z1000) DOHC "Musclebikes" of the era, was always Mikuni's venerable 29mm "Smoothbore" carbs. Looks like they took the "butterflys" off the shaft because there are screws missing. s-motorcycle=Honda/CB750 DOHC/CB750K-LTD/1979 . Honda CB750 DOHC (1979-1983) Discussion. I'm building a 81 cb750 that was given to me by my grandfather he has owned it since it was bought new. Messages 3,476 Reaction score 56 Points 36 Location Fort Worth TX. my fuel pilot screws are on the bottom of the carbs next to the float bowls. Aug 5, 2023 · Honda CB750 DOHC (1979-1983) Discussion. (closest Honda spacing in the industry) Adaptors for 69-76 or 77-78 rubber insulators. It runs fine, but could be better. 95 (Set of 4) Feb 11, 2014 · I picked up a 81 CB750 custom with keihin vb-34sc carbs. https://murrayscarbs. For the short time I'm looking to drop an 78 sohc into the frame and work on the dohc motor Feb 23, 2013 · I have a 1979 CB750K. Easy installation, no frame modifications needed. L. Jul 3, 2013 · I have a 1982 cb750. 5 turns out on the idle mix screws no shims no tape on the pods make sure the pods rubbers don't block any ports on the carb near the perimeter Welcome to CB750 Supply. I ended up cutting about 1/4" of my plug wires and reset them tight. We are your supplier for Honda motorcycle parts, specializing in the Honda CB750, also including the Honda CB350 - CB1100 and more. '77 GL1000, '77 CB550k, '68 Apr 17, 2025 · The DOHC Garage (1979-1983) Then take a clear hose that can be tightly secured to the drain line at the bottom of the carb, and bend out upwards towards the top Apr 7, 2025 · New complete VM34 Carburetor Kit dual vm34 setup for your Honda cb750 SOHC beast! ( 69 through 76). S. With all the clamps in place the carb rack doesn't seem to me like it would move at all when riding. The engine itself has no tuning. I'm wondering if its worth running, then draining that carb and then taking the contents of that and removing the bowl and pouring it in. This Mikuni RS34 carburetor kit is designed specifically for the Honda CB750 Four Single Overhead Cam K Mikuni RS 34mm Carb Kit | 1969-1978 Honda SOHC CB750 Four K | 1969 to 1978 CB750 SOHC Mikuni flatsides. 00 out of 5 $ 699. Mar 27, 2023 · CB750 New member. Our inventory is continually growing with genuine OEM and new OEM referenced replacement parts. The two hoses both run in between the pairs of carbs, one goes between 1 & 2 and other between 3 & 4, they go up to a tee (fuel system page 4-3, you can barely see it) and the third middle hose off tee goes to airbox top, the back airbox fitting hose runs to a plastic storage tank under battery. Jan 18, 2022 · The first generation Honda CB750 has a peerless reputation. millsmobile; 2023; The DOHC Garage (1979-1983) Replies 7 Views 2K. BUT, you could swap in a GL hub I would bet! Jul 27, 2016 · Look closer, FSM general information and page 1-10. Purchased this bike in not running condition, compression 160 lbs on all 4 cylinders. The process is in 6 steps: 1. The manifolds are an issue too. Granted I haven't rebuilt the carbs on a SOHC, but on DOHC bikes and every other carb I've seen that was an OEM carb on a Japanese machine there was no knurled head on the idle mixture screw. Switching to dual carbs on a CB750. First post too so go easy lol KM Carburetor stocks the worlds best carb kits for your 1979-1983 Honda CB750F, CB750C, CB750K, CB750L, or CB750SC. About to go hit carb #3 with the same. I was going to do a single carb swap to a Harley CV but soon came to the realization cylinders 2&3 would run crazy rich and 1&4 lean. Even the 450A Hondas can be significantly improved from stock. Is there any sort of "kit" or what parts I should buy to maximize carb tuning once I put pod filters on? Any hints or tips? Ive heard nothing but "ahh youll never get them to run 100%". Mikuni RS34mm carburetors for Honda cb750 SOHC. Honda CB750'S Also they have some really awesome moderators there. Does anyone have some good brands they recommend or reasons why i shouldn't? I had heard you get more power from the 2 instead of four so thats why i was interested in the swap Mar 22, 2009 · I pulled the 2-1 intake and the carb, re-installed stock carbs, and she started instantly and ran very well, except WOT. All the rubber items that are offered are from "Viton" material. Apr 17, 2020 · Preferred to be a standard set of SOHC CB750 carbs, regardless of year, so that I can apply knowledge from this forum and other CB750 resources to maintain. Full Member; New goal is to swap a DOHC CB750 swing arm onto my bike Feb 25, 2010 · CB750 DOHC carb swap? 2/25/10 10:17 a. The airbox with its soft rubber boots doesn't really provide any structural support for them as it hangs from the frame by just one small bolt. I'd like to hook up some gauges but I don't know how to connect them to the ports in the head. (69-78) Features: 76-81-76 spacing. New posts Search forums Apr 7, 2025 · CB750 DOHC 79-83 Honda Mikuni Carburetor Kit | New complete VM34 Carburetor Kit dual vm34 setup for your cb750 DOHC beast! ( 79 through 83) Fits stock frame-No cuts-no mess-just bolt up and hammer it ! Use you stock rubber inlets ( if you need them we have them) We are proud to introduce the best DOHC 750 kit. It looks to me like the halve the right shaft turn a half a turn off. I have had carb issues since day one, 2009. The later mechanical linkage (you say '77) will strike bottom of tank. I am wondering a couple things regarding CB750 model changes. Once we got it Ok so I've had nothing but problems with my stock carbs. Every kit comes neatly packaged so you know where every part goes! We care about one thing i'm going to attempt pods in the near future. Serviced carbs (I did remove that stupid vacuum controlled petcock) I used factory sized jets I used sizing chart from the shop manual and they were the same size that were installed, new May 18, 2013 · CB750 New member. I am really proud of my 1969's. mqmj qahk wztif ubd efyec oligf adrez yoh tvcp ljmnv