Tuning honda cb750 carbs. I rebuilt the carbs along with everything else.

Tuning honda cb750 carbs Was this type of set up only on the K6. It has freshly cleaned carbs #PD42A (I've read these are possibly off of a 750F) After reading through many threads, I When your vintage Honda motorcycle is properly tuned and the carbs are perfectly vacuum synced you will find that it fires up cold in an instant, has a smooth steady idle, and smooth acceleration RACK OF 4 CARBS PAGE "New and improved" Mikuni RS34mm carburetors for Honda cb750 SOHC. 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. If carbs were off while left open in the rain the motor may be scrap and common when people do that. These carburetors were blasted in my DIY Vapor Blaster to restore the finish & look. We restore, rebuild, and repair Keihin motorcycle carburetors for 1979 thru 1983 Honda CBX, CX500, Magna, Interceptor, Sabre, CB750, CB900, CB1100 and GL1000. so far Ive found only these Apr 17, 2020 · Ease of setup/maintenance/tuning. How long has the bike been sitting, good gas or bad gas?? Crude in the stud?? Engine condition will cause carbs to faultier - spark plugs?? manual Some CB750 carbs do have an accelerator pump to enrich the mixture on sudden throttle openings. After a good Honda Carburetor KitsLooking to get your carbs back to working order so you can ride this season? Our basic kits contain the vital components to stop those leaks and put your carburetors back together with ease. 5K I can vouch for this from my experience with my '79 CB650. From Steve "I start with the slides synchronized (cable adjustment), throttle stops backed out, and Nov 2, 2024 · I am not sure if 1 of these carbs (btw. MOV though I think this was a mercury manometer (looks kinda homemade though Logged Apr 30, 2011 · Anyone have some advice? Thanks. Mikuni RS 34mm Carb Kit | 1969-1978 Honda SOHC CB750 Four K | 1969 to 1978 CB750 SOHC Mikuni flatsides. We are your #1 source for Honda Vintage Motorcycle Parts. Apr 7, 2025 · New complete VM34 Carburetor Kit dual vm34 setup for your Honda cb750 SOHC beast! ( 69 through 76). 73 Honda CB750 Custom Build Part 26 - Carburetor Rebuild I made a Carb Cleaning Video that's fun? 1979 Honda CB750F DOHC 1982 Honda CB900F Barn Find Restoration - Episode 4 - Carb Rebuild part 1 Author Topic: Anyone with Keihin CR Roundslide carbs on their CB750? (Read 42535 times) 0 Members and 1 Guest are viewing this topic. It can be applied to any carbureted combustion engine. Seller Made One Big Mistake Vacuum Syncing Your Vintage Honda 4-Cylinder Motorcycle Carbs - Pt. I have never been able to get it to run properly. Tried a quick search, couldn't find an existing topic. I've remounted them after thoroughly cleaning and checking all mechanical adjustments including bench synch and float set. The bike idles between 1000 and 1200 rpm. I'm not a speed demon or anything like that. Needle clip position doesn't affect 3/4 to WOT very much, that's mainly for tuning the midrange. It offers a remarkable enhancement to your motorcycle, providing an increase in power of up to 25% or more, while ensuring smooth The ultimate carb rebuild kit from Keyster. Aug 29, 2024 · Here for more Carb tuning advice tdubsy Jul 2, 2025 The SOHC Garage (1969-1978) Replies 6 Views 796 Jul 9, 2025 I have a 1970 CB 750 Honda. Unfortunately the carbs had too many "improvements". Have started the bike after I remounted the carbs. Please Note Year, Make and Model after order. This carb kit is custom built using unique mounting plates, stainless steel throttle and choke shafts, along with new fuel connection spacers so as to best match the OEM Honda 76-80-76 carb centre to centre spacing’s for direct fitment to Honda CB750 K models. You have appointed yourself as the fuel systems engineer, pretty much can't teach that over the 'net. Logged Current - 1972 CB750 K2 - Brier Brown Metallic - 1973 CB750 K3 - Flake Sunrise Orange - 1974 CB750 K4 - Flake Sunrise Orange - 1976 CB750 K6 - Candy Antares Red Previous - 1978 Honda CB550K - 1972 Honda CL350 Scrambler - 1972 Honda CB450 - 1998 Suzuki TL1000R - 1993 Yamaha FZR 600 Author Topic: Great Carb Sync Video (Read 32445 times) 0 Members and 1 Guest are viewing this topic. What needs adjusting, The conversation is about synchronizing carbs on a CB750 motorcycle, with various comments providing A major step in your project is cleaning and synching the carbs. The syncing vacuum takeoff points are in the head, the small phillips screws you see just in front of the front carb manifolds. com/product/cb750-mikuni-carb-system/ See how I Author Topic: Re-jetting carbs with individual filter pods? CB 750 (Read 41504 times) 0 Members and 1 Guest are viewing this topic. ) with pods + 4-1 are welcome May 4, 2017 · I get my carbs within 2 cmhg of each other which I believe is close enough. Yamaha 650 Maxim CV carbs bolt-on using pre-77 K carb rubbers/isolators, using pod air filters. Each plug looked almost identical. Trying to set the idle mixture screws using the 50 or 100rpm drop method can be maddening since these don't always idle smoothly. I've put in new pistons and rings, Hindle 4-1 full exhaust and a k&n filter in the stock box. I also have gen Aug 1, 2016 · All header advantages are tossed the second the pipe length is butchered like that, the tuning is destroyed. Carbs needed cleaning, to get rid of the old dried up fuel. It incorporates a high-performance UNI filter Jun 19, 2015 · In theory a single carb well designed manifold should work about as well as 2 carbs. I bought a Super Sport a week ago for very little money, and it starts first time (kick) but runs fairly rough. 2 - CB350F, CB400F, CB550, CB750 Common Motor Collective 39. this is #3 carb) has a slightly different configuration or what. I'm using a set of 5 ohm Dyna coils and stock points that are set to teh stock marks on all four Nov 13, 2025 · The finest in motorcycle performance products for Honda, Kawasaki, Suzuki, and Yamaha Cb750 carb adjustment help HI new to the site have a question I can't find the answer to I got my first Honda a 1981 cb750 I have been building. The basic carb kits provide the essential o-rings and gaskets to ensure a nice long and safe ride. We also service Mikuni smoothbore carburetors. I am running a Scientific Design 4 into 1 header and K&N pods as air filters. These trend-setting motorcycles were built by Honda from 1965-1975, making the survivors all over 40 years old. . Oct 27, 2018 · Hey guys, Trying to get the bike tuned a little better, Right now from at Idle when I give a large throttle blip there is little response/ the bike almost dies. Honda Carburetor KitsLooking to get your carbs back to working order so you can ride this season? Our basic kits contain the vital components to stop those leaks and put your carburetors back together with ease. The current jetting I have is a 135 secondary main and a 80 primary main. With 3 turns out on Jul 10, 2025 · Randy's Cycle Service & Restoration in Central Virginia. Shop our selection of basic carburetor rebuild kits for your vintage or modern Aug 30, 2012 · How to Tune the Honda CB 750 The Honda CB750 was released in the US in January 1969 and almost instantly changed the motorcycling world forever. They will not adapt to the OEM air box. Jan 5, 2023 · Here’s a gauge-style vacuum carb sync tool installed on a 2000 Honda Nighthawk CB750 just prior to beginning the carb syncing process. There is a good possibility a number of people have worked on your bike Setting Honda CB750 Carburetors [PD42 B K8 Carbs] | Adjusting Motorcycle Throttle Cables | Part 9 In this episode I clean and rebuild the PD42 carbs for my CB750 project, and adjust the throttle . I want to use pods, and because the stock CV carbs are a huge hassle Im looking for mechanical carb options that will work on the bike. Honda CB750 Sevenfifty carburetors sync with homemade tool 700 Miles on an Orange County Chopper (Very Bad Idea) May 25, 2014 · That 'handy chart' is worthless with Honda 3 jet carbs The transition between primary and secondary main jets is impossible to fix without blocking various passageways and drilling new ones plus adding some brass tubes inside float bowl The Honda CB750 Nighthawk Carburetor Cleaning Video walkthrough has grown to be one of my most popular tutorials to date. Is this going to be a big Jan 5, 2023 · Here’s a gauge-style vacuum carb sync tool installed on a 2000 Honda Nighthawk CB750 just prior to beginning the carb syncing process. In most cases, a number of hands have worked on these bikes – some professional and some amateurs. After a good Nov 26, 2024 · Discover the best carburetor setups for Honda CB750 café racers. The manual does not touch on 1 of the carbs being different from the other 3. Using Carburetor Synchronizer Gauges To Improve Honda CB750 Cafe Racer Motorcycle Running | 27 In this video I am still trying to improve the running of my CB750 SOHC Cafe Racer project bike Apr 20, 2023 · Hi there friends, new to the forum. This premium intake kit is crafted from durable 6061-T6 billet aluminum, ensuring longevity and resilience. on a trailer). The problem is a rich mixture on all modes. Never rejetted them and it runs like shit. Murray’s Honda CB750 DOHC Carburetor Kits come Pre-Jetted, Synced and ready to Plug and Play for more Horsepower, Torque, Throttle Response and Drivability. 1 - CB350F, CB400F, CB550, CB750 Using Seafoam to Clean Motorcycle Carbs without taking them off the bike The following is a step-by-step guideline for installing the Niche Cycle 32mm Mikuni Kit on your Honda CB450. CB550 CB650 CB750 CB900 and others. Jun 24, 2024 · The main jets were too small, so I'm going up 10 numbers, hoping that will allow a bigger window of tuning, with my pitot control valve. Synchronizing the carbs using a set of vacuum gauges on the other hand will go a long way towards smoothing out the idle, improving throttle response, and quieting down the sewing machine noises at idle. It all has to work as a package. Dec 17, 2014 · how to use the tune/use adjuster screw on a Keihin carb 064A ANA Carb with pods Aug 13, 2017 · Cb750 carb adjustment help Odmckee Aug 13, 2017 carburetors cb750 dohc carbs tuning dohc O Murray’s Honda CB750 SOHC Carburetor Kits come Pre-Jetted, Synced and ready to Plug and Play for more Horsepower, Torque, Throttle Response and Drivability. Keihin CR Carburretor Behavoir - Tuning or Fact?These only have about a 1/3 throttle turn from fully closed to fully opened, so metering the throttle is quite a bit more delicate than stock. Carburetor rebuilding cleaning Apr 15, 2024 · 1980 cb 750 tuning 750_cafe Apr 15, 2024 carb balance carb sync carburator carburetor needle jet holder cb750 bogs and dies 7 In this video we look at the carb sync on this 1979 CB750. The previous owner ripped out the airbox and put on some generic air pods, using electrical tape to limit air flow. Before my head is ripped off, I'm not pushing for pods although success stories (no dead-zones, tuning nightmares, etc. I’m just confused as to how pen Thread Jul 10, 2022 carburetors choke high idle idle sohc tuning Replies: 1 Forum: The SOHC Garage (1969-1978) Jan 29, 2013 · CB750A Performance ModsPre-77 CB750K carbs ("round tops") will fit (and work well). Specializing in vintage & classic motorcycles - all makes & models. Push the choke down, the butterflies open, and it idles lower. Further, each set is hand-assembled and tested on a running engine to ensure quality. If you are interested in tearing these carbs apart step by step to make it The finest in motorcycle performance products for Honda, Kawasaki, Suzuki, and Yamaha Dec 30, 2024 · Hi everyone! first post, already asking for your wisdom My CBX 750 F has arrived home non-running (e. (please specify) Features of the RS Series Carburetors -Adjustable Pump Adjust Apr 15, 2024 · 1980 cb 750 tuning 750_cafe Apr 15, 2024 carb balance carb sync carburator carburetor needle jet holder cb750 bogs and dies 7 In this video we look at the carb sync on this 1979 CB750. Apr 29, 2024 · 1-1/2 turns out on the idle screws is fine. (closest Honda spacing in the industry) Adaptors for 69-76 or 77-78 rubber insulators. g 1981 Honda CB750 Cafe • Part of the tuning with KeiHin CR33 Special carbsSubscribe already. I purchased some balancing gauges from Amazon (set of 4 gauges). and seems to idle fairly well and respond to throttle but appears to come back to idle maybe a little slow? Have purchased an individual 4 gauge carb Feb 1, 2020 · I guess my question is which jet controls WOT? I have totally rebuilt my 1981 CB750C. For 1971 Honda CB750-K2 4-cylinder motorcycles. That was the years the EPA started making rash demands on manufacturers without any technical expertise. I have just finished putting a new head gasket and seals in the tope end. keep carb as close as possible keep a small runner use a properly sized plenum play with cam timing jetting etc. stock carbs on a stock engine? Which are harder to tune? Thoughts? Just wondering, b/c I've got a set of CR carbs, and I may end up keeping them if it's worth it. Easy way to be able to remove and install carburetors on a 1981 Honda CB650 and other 4-cylinder models. This Mikuni RS34 carburetor kit is designed specifically for the Honda CB750 Four Single Overhead Cam K Models. Thanx in advance for any comments!! Aug 6, 2019 · The pilot jets are commonly plugged and super hard to get 100% clean and you cannot see the problem. I rebuilt the carbs along with everything else. Aug 29, 2024 · I'll include a picture of the carbs so you guys can see which design they are and I'll post a picture of the rebuild kit and old needles (unsure exact size, but they are bigger). In this video we will hammer down on a tuning technique that took me years to understand. I'm pretty sure the guy left gas in it Check out this weeks video as we nail down the huge topic of pod filter carb tuning and bolt on exhaust upgrades and what you need to do to the carburetor's ability to keep up with the changes. It was in storage for 5 years, and not running when I bought it. May 20, 2021 · Hello, everyone. Aug 24, 2016 · Hello all, so I have been digging and reading trying to get my carbs tuned and I came across this which seems to be pretty detailed but I still had a few questions since I'm new to tuning carbs. Trying to get the perfect tuning with pods is like chasing a shadow. Author Topic: Single or Dual carb on 750 (Read 18186 times) 0 Members and 1 Guest are viewing this topic. I Currently have the bike idling and accelerating fairly well. Let me start from the beginning. This page provides cleaning techniques and synchronizations for common Japanese bikes. I don't have any info on the airbox rubbers (do the K carb rubbers fit?). But what seems off is if I give it throttle just a little too quickly from lower Rpms the bike bogs down. When I asked about Murray carbs they laughed and said it is the biggest pain in the butt to deal with. there will be some compromise as the cam is not very conducive to either in certain ways that would take a long explanation and you didn't ask. Same for once I'm at a bit higher RPM. I have done the timing and the valve clearances. Jan 29, 2013 · CB750A Performance ModsPre-77 CB750K carbs ("round tops") will fit (and work well). ( how to cure factory lean state) Discussion in 'Motorcycle Technical Discussion' started by jtgh, Feb 23, 2005. #vintagemotorcyclerepair Mar 18, 2017 · The service manual spec is an emission setting, you can go 2-2 1/2 max, needing more says your carbs have clogging in the idle circuits. These would be for an old AEE trike w/ a stock CB750 motor. You should be able to do consistent plug chops then, and tell you if you need to make a pod shield. Got two options. The air screws on my carbs have a stop tab on them which will let you turn them only one turn in either direction. Not only is it super practical and easy to grasp. Carburetor rebuilding cleaning Jul 2, 2025 · Hey all, Looking for a little more advice on getting this bike running nicely. This makes no sense to me. I also installed a Web Cam 41A cam. These are by far, the most complete kits available! Honda CB750 Nighthawk carb clean Cleaning an Inline four CB750 Nighthawk carburetor assembly can be overwhelming. That engine had the most improvements. it sat for approx a year and half not running. Aug 3, 2013 · hi guys, i hope you can help me. Checked plugs and all 4 look to be running too lean. I'm pretty sure the guy left gas in it Jul 21, 2009 · Author Topic: CB750 K0 Carb Tuning (Read 6685 times) 0 Members and 1 Guest are viewing this topic. I checked out the FAQ on carbs and it said to turn screws all the way in 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. after getting it alltogether I tried to start it and it would start back fire out of cylinder 3 and die. Apr 7, 2025 · Mikuni RS 34mm Carb Kit | 1969-1978 Honda SOHC CB750 Four K | 1969 to 1978 CB750 SOHC Mikuni flatsides. This Mikuni RS34 carburetor kit is designed specifically for the Honda CB750 Four Single Overhead Cam K Sep 29, 2022 · Yes you can tune without gauges but you must have the ear and feel to do it. I have good spark so I assumed the carbs were out of sync but after Odmckee Thread Aug 13, 2017 carburetors cb750dohccarbstuningdohc Replies: 3 Jun 27, 2005 · These carbs came off a GSXR1100 engined race bike, and the carb spacing is spot on for my Suzuki GS1000S (8 valve) head, but to make them fit a CB750 head I'd need to somehow close up the spacing between the centre carbs about a half inch, which will apparently require not just some adjustment in the racks, but shortening of linkages etc? Author Topic: CB750 carb issues - rich at stock setting and poor idle (Read 9427 times) 0 Members and 1 Guest are viewing this topic. May 3, 2011 · Anyone have a good procedure for adjusting and syncing carbs (assuming that everything internally is correct and clean)? I've always been able to muddle through it but always felt there had to be a better way. These packages are more than just aftermarket carbs. After that it ran, sort of. It seems to be straightforward with using the adjustment screw to balance each carburetor. These kits contain parts not normally available - and help solve rough running issues related to these CB750 carbs. Once the engine cools I have trouble starting the bike without increasing the turns in the idle adjustment Apr 29, 2024 · 1-1/2 turns out on the idle screws is fine. From Steve "I start with the slides synchronized (cable adjustment), throttle stops backed out, and Author Topic: benefits of Keihin CR vs Keihin factory round tops on a cb750 (Read 13847 times) 0 Members and 1 Guest are viewing this topic. carb sync 001 KZ550 KZ550A2 Carb sync diy Yamaha FJ1200 Carb Sync 101609 Homemade Carb Synch Tool. I Bought This $1,500 Motorcycle For $250. Removal, cleaning, assembly, synching and tuning covered. Apr 18, 2020 · I have a step by step 2 hour long video on how to rebuild Honda CB750 carburetors (1969-1976). 2 cams would probably Order your Carburetor Kit - CB750 - CB900C - 1980-1983 - Randakk's Original - 4 Carb Set from Randakk's Cycle Shakk. (please specify) Closely jetted for most applications. 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 Nov 10, 2010 · What are the advantages/disadvantages to running CR carbs (29mm) v. Keep reading to see how to set it up. Below 4500 RPM it coughs, misfires and splutters and has poor acceleration Jul 5, 2023 · Hi all. Author Topic: benefits of Keihin CR vs Keihin factory round tops on a cb750 (Read 13847 times) 0 Members and 1 Guest are viewing this topic. Once the engine cools I have trouble starting the bike without increasing the turns in the idle adjustment I went with the Murrays DOHC cb750 Dual Carb Setup and got rid of my stock cb carbs. Apr 30, 2020 · The needle in the slide is metering the amount of fuel to mix with the air at this point. Vacuum Synching Your Vintage Honda 4-Cylinder Motorcycle Carbs - pt. Each intake is precisely engineered and aftermarket carbs are modified for each specific application. I have good spark so I assumed the carbs were out of sync but after Odmckee Thread Aug 13, 2017 carburetors cb750dohccarbstuningdohc Replies: 3 Jun 27, 2005 · These carbs came off a GSXR1100 engined race bike, and the carb spacing is spot on for my Suzuki GS1000S (8 valve) head, but to make them fit a CB750 head I'd need to somehow close up the spacing between the centre carbs about a half inch, which will apparently require not just some adjustment in the racks, but shortening of linkages etc? Aug 29, 2024 · Here for more Carb tuning advice tdubsy Jul 2, 2025 The SOHC Garage (1969-1978) Replies 6 Views 796 Jul 9, 2025 I have a 1970 CB 750 Honda. Honda CB750 Cafe Racer Part 15 - Carb rejetting - Collaboration with Motorcycle MD For The Bold 163K subscribers 1. Here's a handy chart that someone posted a while back: mystic_1 Nov 26, 2024 · Discover the best carburetor setups for Honda CB750 café racers. Got a 1979 cb750k. Boost performance, throttle response, and reliability with expert tips and recommendations. Each one separately turned all the way to closed must kill that cylinder or again you have carb issues. The ultimate carb rebuild kit from Keyster. mov and try watching this goober without wincing in pain . Author Topic: Carb tuning on a CB 750 K1 (Read 8561 times) 0 Members and 1 Guest are viewing this topic. so many varibles carbs do not go out of tune on their own. g. The engine has stock displacement. Genuine VM34 Mikuni tuned to your cb750 SOHC Honda Fits stock frame-No cuts-no mess-just bolt up and hammer it ! One hint air flow issues are affecting tuning is if the carbs seem to demand mains larger than say 130 or less than 120 on a stock engine running pods/breadbox and unrestricted exhaust. It only really runs on choke, even when warmed up. This is how my carbs are set . Vacuum Syncing Your Vintage Honda 4-Cylinder Motorcycle Carbs - Pt. ugh Manometer (1978 honda cb750 carburetor vacuum adjustment) and a SANDCAST Honda CB750 K0 Sandcast 11/10. Need to buy pre-77 K carb rubbers/isolators (which are still available new). “You have to learn somehow”. The 1978 CB750 was the last year of production for the SOHC CB750. Jun 4, 2014 · The carbs would sit directed as centered as possible, but the manifold would taper towards the further cylinder to increase air velocity in an effort to prevent the inner cylinders from running lean. The bike is able to stop and start easily while the bike is warm. But Enhance your motorcycle's performance with the Cognito Moto Design Air Intake Box, specifically tailored for Murray's Carbs Honda CB750 SOHC models from 1969 to 1978. 05K subscribers Subscribe Using Carburetor Synchronizer Gauges To Improve Honda CB750 Cafe Racer Motorcycle Running | 27 In this video I am still trying to improve the running of my CB750 SOHC Cafe Racer project bike Apr 20, 2023 · Hi there friends, new to the forum. The carbs will not allow any "quick" throttle opening. 3K subscribers Subscribe Ultimate carburetor rebuild kits for the Honda CB750F Super Sport from 1977-1978 and the CB750K from 1978. . Apr 18, 2020 · This step by step video tutorial will cover everything you need to know on how to properly remove, clean, inspect, assemble, synchronize, and tune the carburetors on your CB750. 1 - CB350F, CB400F, CB550, CB750 Part: Carburetor Synchronization Tool Kit for Honda CB500K, CB550 / CB750 Motorcycles Why You Need This: Carburetor synchronization is key to getting the carbs on a Honda CB500K, CB550 or CB750 (as well as CB350F & CB400F) to run correctly; this tool kit makes the process a breeze. t is important to note that the cost of refurbishing your old OEM Apr 12, 2016 · I'm naively trying to create a post that will be part resource for those needing to properly jet the K4 or relative for 4-into-1 and/or stacks. Featuring the first mass produced in-line four cylinder engine, hydraulic disc brakes, and weighing a mere 480 pounds, the CB 750 quickly became a class by itself. So if you have experience tuning say 10 to 15 bikes before I’m sure you could do a good job without gauges. Four (4) kits are required to service a set of carbs. The engine itself has no tuning. 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. Also, the manifold is wider near the outside cylinders to help prevent them from running rich because they are closer to the carbs. Regarding sync, the most important thing is that all four carbs are drawing the same vacuum. ¾ throttle. off my 74' CB 750 K4 in a few days. I pulled the carbs broke them all down, had them ultrasonic cleaned and reassembled them with all new parts from complete kit Jan 29, 2013 · Hey all, Im new to this forum, but am in the process of building a cafe bike out of a 79 cb750. If you twist the throttle open at low, middle, or anywhere before 7,000 - the huge air signal is dry and therefor causes the motor to die momentarily Jun 24, 2024 · Turbo CB750 carb tuning - tips and secrets from the Honda master Jobe Customs 5. I have a 1978 cb750K. If carbs not the OEM ones then like said, you are in no-man's land. Full throttle: in the CB750 SOHC4 Honda carbs, there is almost no difference between ¾ and full throttle except for the amount of fuel the petcock can supply (to keep the float bowls full) at full throttle vs. Make sure to also check out my 9hr long engine rebuild video. Included in the kit are: 4 x different Jet Needles - Lean, Standard (27201), Rich CB750 Nighthawk: Carburetor Removal In this video I show you exactly what it takes to remove the carburetors on a 1991 - 2003 CB750 Nighthawk. I checked out the FAQ on carbs and it said to turn screws all the way in I Bought This $1,500 Motorcycle For $250. If you twist the throttle open at low, middle, or anywhere before 7,000 - the huge air signal is dry and therefor causes the motor to die momentarily This is how I re-jet carbs! Spoiler alertits pretty much how everyone else jets carbsBut if you have a CB750, and arent sure about jetting, maybe this I was a Honda mechanic. Sep 4, 2023 · Chasing some advice on tuning the 4 KEIHIN Carbs on my CB900. I have 4into1 delkevic exhaust and individual K&N pod filters. The Idle Mixture Screws (IMS) are adjusted for maximum lean conditions or fastest idle speed in this case. 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. If you have a vintage Japanese motorcycle, you need “more smiles per hour”! Aug 24, 2016 · Hello all, so I have been digging and reading trying to get my carbs tuned and I came across this which seems to be pretty detailed but I still had a few questions since I'm new to tuning carbs. As a side note, the bike already idles too high (4500-5000) so I know the carbs need tuned bad. Currently only non Honda CB750 Rebuild Videos Below are step by step video tutorials on how to properly rebuild your CB750 engine and carburetors. Being offered a carb rebuild and jetting for $400 by s shop. So does anyone here have experience Feb 17, 2023 · I’ve watched five or six YouTube videos on balancing carburetors for a CB750. I cant be a bit more gradual and its ok. We learn the importance of double checking our work even after a perfect carb clean and bench sync I'm about to Vacuum Synch my Carbs. Mar 30, 2009 · You won't get the full 8 inches of vaccuum without the stock airbox. Cams: carb air screw adjustmentHere's a picture of one of the carbs on my 1976 CB750. 4 in to 4 exhaust stock air box. Apr 7, 2025 · Mikuni RS 34mm Carb Kit- Honda DOHC CB1100,Honda CB900,Honda CB750,500 This Mikuni RS34 carburetor kit is designed for Honda CB750 equipped with stock engines. With the battery charged, I turned the ignition key and notice two unsettling things: i. It offers a significant enhancement in performance, providing up to a 25% increase in power while ensuring smooth operation without any hesitations or flat spots. Fuel accel pump is working. I'm starting to think it's time to adjust the Feb 23, 2005 · honda CB750 DOHC 1993 , carb tuning. the dash light "tail light" would light it up whenever the clutch is pulled in (e. https://murrayscarbs. Sweet deal in my books. I'm currently working on an 81 CB 750 custom all stock. (69-78) Features: 76-81-76 spacing. jwqjk fauv nutsd dmmuq xihzpit mexg cuysc apbps auzkr xyfw jfphnao tqtw raeexio dlztfs gjgrlbsb