Vintage and Classic Hondas

cb750 frame compatible with a cb900?

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Angelcabreraa

cb750 frame compatible with a cb900?

I'm looking at doing this swap and want to know what does it take to swap it and is it difficult? Ive found few right ups but none are clear as to what works and what doesn't

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Re: cb750 frame compatible with a cb900?

Administrator

As long as the frame is not a "C" model, it is a bolt in.
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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
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Angelcabreraa

Re: cb750 frame compatible with a cb900?

In reply to this post by Angelcabreraa

Cool beans thanks appreciate it!

TOOLS1

Re: cb750 frame compatible with a cb900?

Administrator

Oooops. I meant as long as the engine is not a "C" model.

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Angelcabreraa

Re: cb750 frame compatible with a cb900?

In reply to this post by Angelcabreraa

Lol ok cool, my bike is 79 and so is the motor it'll plug right in correct no wiring needed

Truck

Re: cb750 frame compatible with a cb900?

The "C" motor has a built in 2-stage transmission. It will only fit into a "c" frame. The F model doesn't have this tranny and should drop right into your frame.

It's only illegal if you get caught.

If at first you don't succeed, use more lighter fluid

95% of Harley Davidsons ever made are still on the road... The other 5% made it home.

New Baltimore, Va '82 CB900c, 1980 CB985F/K 'Mutt"

Angelcabreraa

Re: cb750 frame compatible with a cb900?

Cool beans how do you like you cb900, good power? Much of a difference is it worth it? I found a 900 motor for the same price as a 750 so why not

Truck

Re: cb750 frame compatible with a cb900?

In reply to this post by Truck

I like my 900. Power is good, however the PO put pods on it so I'm still playing with the tuning to get it right. The 900c is a pure cruse bike. If you look at power to weight ratios its actually the same as a DOHC 750. The extra size prevents it from carving any corners like a 750 can. If you can get a 900 engine I say go for it, an extra 15-20 HP can never be a bad thing.

Angelcabreraa

Re: cb750 frame compatible with a cb900?

In reply to this post by Angelcabreraa

Ok cool thanks man i appreciate it, i just bought it'll be at my door step on Wednesday or Thursday and hopefully running in the bike the same day

Truck

Re: cb750 frame compatible with a cb900?

Should be a good project, let us know how it performs.

Angelcabreraa

Re: cb750 frame compatible with a cb900?

Ok so i received the cb900 motor on Wednesday and went ahead and pulled the 750 out the frame and threw the 900 in few minutes after. Ok so the 900 motor does bolt up but you have to shave all 4 ruber bushing to sit flush with the case. Youll have to add spacers on top top rear motor mounts. Besides that everything bolts right up, i put the 750 carbs on it and they work just fine. The clutch was slipping so i adjusted that and it barely slips now. The motor wasn't charging the battery so i swapped out the rotor with a new one. Now was to performance, jesus christ this thing picks up and moves on a dime, way faster than the 750 i would recommend this swap to anyone with comon sence.

Jonathan daugherty

Re: cb750 frame compatible with a cb900?

What year and model is the bike and the new motor if you don’t mind me asking