carburetors

Been reading VP Fuel brochures and just curious what kind of experiences and opinions are out there from previous users. Would be mixing 1gal VP to 4gal pump to run in a 1978 CB750K - stock carbs, airbox, pipes - on the road as my "everyday ride".

Hello everyone, I recently bought a 91 Nighthawk CB750 off craigslist for a whopping 500 dollhairs. PO told me carbs were recently done but has been sitting since 2012 :banghead:. anyways took her home slap the carbs on was easy compared to my magna 500. look at the manual for help for the...

Hi there, I'm new in here, I'm from Portugal and recently buy a 1980 Honda CB750 F with the carbs VB52B. The information I have from the bike is that have been sitting around without start for more than 10 years, and the bike was imported from Japan in the later 80's. I don't have any...

82 CB750 Custom.......I got the carbs off (that was a task) and have them all broke down and ready to be cleaned. What is the best way to go about this? On other types of carbs I have used brake cleaner and compressed air and some elbow grease. Thoughts?

hello friends, i have a cb750c 1981 with a couple of problems... 1) when the motorbike is hot, the idle is at 2000/2200 rpm, when it's cold it's at 1000/1100. if i decrease the idle screw, during the first 20 minutes of ride my bike turns off when i'm in trafficated roads. 2) the original...

Can any one recommend some on who can rebuild and tune a set of carbs in the Boston Ma Area. Thanks

New to the site. I'm not to familiar with these 750's. So could anyone tell what is different about the custom? Thanks

Hi, I recently rebuilt/cleaned my 1980 CB750F carbs. There are two hose connectors. One for the fuel line from the gas tank and a second one by the throttle connectors on the carbs . I don't recall where the other end of the hose goes for this connector. The connector is between carbs #2 & #3...

I just bought a 1972 CB750 and the jetting is messed up. The bike has pod filters, Dyna S ignition, and Triple A headers with an open megaphone. I am looking to get a jet kit that is close to making the bike run right. It spits and sputters but generally runs ok at full throttle. I am in...

The title says it all mostly. Oval K&N pods, the choke cable linkage hits the front face of the pod filter when the choke is pulled on. Anybody run into this before, and what solution did you come up with? Thanks!

What is this and where can i get them

Hi all, Long time lurker here! Recently picked up an '81 CB750C for super cheap that clearly needed some work...I've made it my summer project for this year, thanks to my wife :D The PO didn't really do my any favors, left it uncovered, in the rain, removed the carburetors and messed around...

I have a '78 750k and I'd like a shorter roll on the throttle. Currently I have to over reach the grip to be able to roll it all the way on. I don't need a 1/4 turn just better than stock while retaining the OEM switrch housing.

Ok guys my question is this. What would be the cause of the engine sputtering slightly during idle and most noticeably during the initial throttling from nutrel to first gear. I have only synced the carbs using feeler guages to get the slides to a similar level. I don't have the 4 carb sync tool...

Hey all, So I've got myself a 1979 cb750k. Back when I didn't know much about the cb series, I put pods on the bike. Didnt really make any attempt to rejet. Now that I'm older and wiser, I've pulled the pods and put the stock airbox back on. I just started it up and synched the carbs. When...

Is it possible for me to replace cracked rubber line shown in red here without dismantling the carbs? I dry ice blasted the carbs at work and they cleaned up well. Planning to rebuild with new float gaskets and jets but what about this rubber line? I do not want to pull everything apart...

I have a 81' cb750 custom. Will having having the air box off make it act like its starving for fuel when you accelerate? It runs a little better with the choke pulled. But once you have reached a higher rpm like 4K it starts starving for fuel. Please help me.....

Okay folks. I started with a 1977 CB750K that ran well. I put a 4 into 1 exhaust and air pods on. My first question is about idling. I turned the mixture screws out 3 turns, and it idles ok around 1400, but worse at a lower rpm. How far out can I turn them? Shouldn't it idle smoothly at a lower...

Trying to restore the carbs on my 1980 Dohc cb750c. I'm hoping someone could recommend where to get a complete and good brand rebuild kit. Any info would help. Thanks!

I am working on the carburetor of a 1981 CB750C (VB42A) that I picked up a couple of weeks ago and it is leaking gas like crazy from the overflow. I am assuming that the float needle is not seating. I have put on new float needles, cleaned the seats, checked the floats heights(15.5 mm), and...

I am working on the carburetor of a 1981 CB750C (VB42A) that I picked up a couple of weeks ago and it is leaking gas like crazy from the overflow. I am assuming that the float needle is not seating. I have put on new float needles, cleaned the seats, checked the floats heights(15.5 mm), and...

Hey Guys, first time poster here. Last summer, I bought this 82 Nighthawk that had been stored for the past 3 years. Just started my Café build but I need to have the bike inspected to plate it. Bike didn't wanted to start so I started by removing the carbs and cleaned them using the...

Hi gurus. I have a 77 police model - CB750P7. The carbs are PD41As and the stock main jet size was 115. Can anybody tell me where the needle clip should be set for stock please? Nothing in the manuals is conclusive. I'm certain the carbs had never been apart until I rebuilt them and the clips...

Hi there, I am new here and have just bought my first CB750. It has been stood for 10 years or so and had the carbs rebuilt just before i bought it and a full service. Was running pretty rough so i pulled the carbs to clean and blow them through. Now they are back on the bike and I'm struggling...

Hi guys, I bought a 1981 CB750K years ago, and I've spent a lot of time rebuilding and customizing it. From the beginning, the carbs never quite worked well no matter the setup. Eventually two different people told me they were messed with too much and I needed a better set. I found a great set...

Just wondering if anyone has experience using the Cognito Moto Custom Air Intake Box? I just got a '80 and '81 CB750 DOHC and they came with pod filters... but after searching this forum and a few others nearly everyone says to drop the pods for the stock airbox or I'll never get it running...

Hello There everyone Im new to the forum I'm unsure if I'm posting this in the right section or not a head of time so if i need to make a correction please let me know and i will, otherwise here is my issue Me and my dad are building his 81 cb750 it ran great after cleaning the carbs and basic...

Good morning all. I need to replace a fuel petcock on my 1977 CB750K, I have seen many aftermarket and stock offers but I am not sure of the mounting nut size? I have found some places that say 14MM and many that say 16MM. any help to do my own check. Hondaholic

Hello everyone! I'm new to the site. Well after weeks of searching the internet and calling various shops. I have yet to find the part I need. I recently rebuilt the carbs on my bike. During the tear down process I noticed that a part was missing. This is the first time I have torn into them...

G'day crew.... I am new to this so bare with me... I just bought an 81 cb750 which wasn't running for 20 years, I cleaned the carbies and she came alive! It idle's a bit rough but a little twist of the throttle it revs straight up to around 4500 and stays there??? Any help will be appreciated...