Suzuki 2 Strokes

I picked up a fixer upper 1981 CB 750c from my brother in law.

Its got 24,000 miles on it, in okay shape (never been down)

It ran well a year ago or so when I went through it for him (its since been sitting).

It needs sidecovers and exhaust, and the tires mounted on it (previous owner picked up new tires but never mounted them). Other than that it runs right down the road.

Soooo, the question is what to do with it. I can get my cash out of it fairly easily as it sits, or I can use it as a rider for awhile and sell it in the spring. The CX650 is a bit too small for me (my knees come up too far)

I've been thinking about turning it into a street racer, as some of the CB750's look pretty good, but already have enough projects floating around....

Anybody have one of these in the past?

How good are they for miles without overhauling?

Hmmmm... choices choices.

Arne,

You know the answer. Look into to your heart and what do you see? A space where that bike should be sitting with a Cafe Race look.

No need for big bucks. get it running with good rubber and then find/make clipons/clubman bars and rear sets. Find a cheap cafe seat and a 4 into 1 pipe and you're good to go. It can be done progressively once it runs.

Those motor can run for big miles but keep and eye on all those chains - cam- primaries- rear.

The carbs are OK for about 80 plus HP. Dyna ignitions are still available as are exhausts etc. Did you check out the cafe racer website for SOHC 750's?

A man can never have too many projects - except I have too many already...

I remember reading someone here used to work on them and recently (past 6 months) picked up a red one - was it possibly Wayne?

Yea, I picked up a 78 CB750F about six months ago. Rebuilt the carbs, checked the timing and put a battery on it and it fired right up, but the cam chain was REALLY making a racket and the adjuster would not stop the noise. I pulled the engine out last week and was planning to top end it, but once I got it out, I worked on the cam chain tensioner a little and I am just going to adjust the valves and put it back together and see how it sounds.

This is a big heavy bike. I had a 78 750E Suzuki and I really don't remember it being this big and heavy.

Working on one of these really makes you appreciate two strokes.

Wayne

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Well, I saw these on my local craigslist today, so I took it as a sign.



Looks like the CB750 will be a streetrod after a few more parts like that!

Thanks guys - Arne

I picked this CB1000 engine up off the local craigslist, with a little crankcase modification and jug swap action I'll have a chain drive CB1000.

Now it's starting to look like a project!



I'm not quite sure how racy it'll end up.... as it's going to be a sizeable bike when its all said and done. Maybe just a ducktail seat and a new paintjob will wrap this one up....

QUESTION:

They've been telling me that the stock CV carbs will need limited adjustment (apparently they're tolerant of changes on these honda 4 strokes)

With new exhausts and 350 more cc's I'd be surprised if I didn't have to re-jet, but I'm not a four stroke guy. Anybody know the answer?

I'm not sure the answer is known! Good luck with it. Should be interesting.


Lane

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Gordon wrote:Here's mine -- pretty much bone stock except for the Supertrapp exhaust and the paint job.

Very cool. Did that DOHC come with the CB750 four logo on it?

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So I picked up some honda line rear hardside luggage pieces. In decent shape, but they have a couple hairline cracks in them around the handles and latches.

I'm going to paint them, but don't want the cracks to transgress through - I'm not a body work guy by any means.

Options that come to mind are:

Epoxy

Fiberglass patching kit.

Plastic welding.



Anybody ever done this sort of thing before?






(I didn't pick up the parts bike, just the hardsides off it.)

I had a similar set of bags. I did lots of repairs on them with fiberglass.



Lane

i had an 81, i hated it. was a tank and those carbs were a PIA. but, it ran for 3 years till it slung the timing chain.

the sohc bikes, much better imho. had a75f for 6 years. never missed a beat.

I had a CB900 along with a few spare CB750 and 900 motors a few years back. The worst job was grinding valves and setting the shims.

Once I had it together it looked great and sounded great but I struggled with the carbs and in the end I put the stock airbox back on. Those carbs are not easy to set up.

As soon as it ran great i sold it. Time to move on to the next project...