dohc

I have a 1978 CB750F Supersport. Last fall I did an oil change and I removed the clutch assembly to inspect my plates. The clutch was slipping earler in the year, but after adjustment was working well. I have 6 friction plates the same and 6 steel plates all the same except one is a double. I...

Will the exhaust from a SOHC Honda cb750c fit a DOHC Honda cb750c. I can't find a 4 into 2 exhaust system anywhere and my original pipes have developed rusted holes.

So after some 'starting' issues, my 1982 CB750C now has a larger electrical issue. With the battery fully charged, I found when I turned the key that the battery voltage would essentially collapse (no lights, nothing) to pretty much nothing. I eventually found that when I removed the 4 pin...

cb750 cafe, black and yellow :) new ohlin shock cb900 engine lots of work

I have a 1981 CB750k that has some hesitation and sputtering under high load, and I’m also continuously getting a black plug on cylinder #2 (even after new plugs). It seems to start up and idle fine, and even runs pretty good for the most part. Cylinder 2 is getting hot right away on startup...

I have been rebuilding a 1979 CB750 engine for some time now (on and off). Since it had been so long since I took my engine apart, I decide to do a mock assembly of my crankcase before I close the crankcase up for good! Everything seems to be fitting well and turning/working as intended (and...

Looking for someone who has some skills at doing some restoration on my 1976 CB750.

I was getting my 1982 CB750C all buttoned up after getting some light maintenance done for the riding season, and I made a stupid mistake: when plugging in my 2-prong flasher relay back into its location, I plugged in the green (ground) wire instead of the grey signal cable. Heard a click when...

Hi. I got a 82 cb750sc Nighthawk importet from US for some years ago. And i want to make the indicator lights light up all the time. Until you turn on the indicators then it should flash ofc. Ind Denmark (where im from) is it called US light, but i cant find anything online on how to make...

Hello all I’m currently rebuilding the top and bottom end on a 79k dohc. The bolts are quite bad for the casings and would like to know if there is any kits that I can buy that are good. Found couple on eBay but not sure about them. Any help is appreciated

Hello and thanks for the help can anybody explain what the carb numbers mean this is off a 1982 honda nighthawk 750. VB 42A UTL what each digit or number means . and can a replace my honda VB 42A UTL with and VBA ### i guess ive heard any VBA -??? will work is that correct ? thanks John

Hey everyone. I have a bad spark unit. There are some OEM ones online but I sort of hate to replace an old part with an old part from someone I don’t know. Are there any good aftermarket spark unit replacements? Anything with a heat sink? Thanks for your ideas!

Since I am having now probable Rectifier/regulator problems, If I do not get an Honda stock Rectifier/Regulator, Are Rick's Regulator/Rectifier Combos for Honda DOHC CB750 reliable? Or is it Museum time for my bike now?

Does anyone have engine temps, or know what max temp is acceptable for these engines? I'm looking for surface temps (valve cover, cylinder fins, exhaust/header connection and/or oil temps) after a decent ride or even just warmed up in the garage. I suspect my '81 CB750 is running a little too...

Hi all does anyone know what the vacuum reading on #2 carb should be on a cb750 Dohc 1981 I'm getting 8 cmhg. Kind regards Rampton

I have a 1980 CB750C, and my tail light is getting pretty loose. It appears the grommets are worn out. Does anyone know where I might find new grommets for this? I've been looking and haven't been able to find any online. Thanks!

Hello, I was hoping to get some advice in regards to a LED turn signal wiring. I have a 1980 CB750k. I’ve got some 2-wire LED turn signals wired in currently. They’ve got a red and black cable. For the left signal The red cable Is connected to the O cable (per below pictures). The O/W cable...

does anyone here know the correct sprocket sizes for a 1979 JDM 750FZ { five nut rear sprocket }

1981 CB750 DOHC. The engine was rebuilt by someone else. I am going through and setting up timing. Noticed that the 1,4 Cylinders are at the top while the timing marker is on the 2,3 cylinder. So the TDC is flipped TDC for 1,4 is set at timing mark 2,3. Cylinders 2 and 3 are at TDC when the...

Has anyone tried one of those ebay gas tanks? Like this one...

I've had some bad luck with one of my fork seals consistently leaking and wanted to get the opinion of others. Take a look at the following pictures and please let me know if anything obvious stands out that could potentially cause a fork to leak: I feel like the problem likely has to do with...

Is it possible to just remove that bolt and put a new seal on it

Hi, does anyone know what the correct carburettors for a 1981 Dohc cb750k are. 🇬🇧🇭🇲

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. 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.

I know the carbs need to be sync'd better but the issue im having you can see in the video. Looks like this carb opens via vacuum leak? any suggestions?

Found an old engine and in the photos there is a spacer labeled MRE between the block and the clutch housing. Does anyone know what this is? 1980 DOHC for a custom

I'm in the Midwest and could maybe pick it up if the price is right. (Maybe other years could work).

hello friends — need shorter throttle cables for my newly installed clip-on bars bike is a ‘79 CB750F SS ( DOHC ) — any recommendation on sources ? — are CB750 SOHC and CB750F DOHC cables compatible ? ( I believe an option is to re-route my current stock cables by making wider bends, but I...

First Ill say I'm new and thanks for letting me join. I'm a fairly handy guy and race karts on the weekends with the kids. This is a a new hobby I have been exploring and finally found a bike/bikes that fit the mold. I bought a 79CB custom. It was modified some before I got it and had carb and...

I'm tracking down an electrical problem in my 1978 Honda CB750a Hondamatic. The tail light fuse (7A) blows immediately when the ignition switch is turned on. I've determined that there is no short in the tail light, and it's working perfectly if it is connected to a 12V source. The tail light...