CB750 Super Sport. This ain't right.

[archmill]

Have now stripped the engine completely. It's been rebuilt in its short life (16000 miles on the clock), registered in Sept. 1979 and the last tax disc July 1981. The LH cam carrier has bronze bushes fitted which I have been told was never a factory fit, four of the rockers have been dressed with a stone and there's no chrome on them. There's a chip in one of the barrels, a lovely half moon impression on the top of one of the pistons (guess it was a valve head) and the cranks on its last legs. Here's a photo of the oil pump filtre.
That ain't right, is it? LOL.
Anyway, I am looking for a crank or is there some way to reclaim the original?

[LesterPiglet]

OMG! Slight bit of damage then. Sorry I can't help you.

[Bryanj]

There are no undersize crank shells available but i believe SEP in kegworth will do it if its at all possible, otherwise i think all the 750 cranks are the same and wear is not  a common fault

[Spitfire]

That oil pump filter looks nasty.

Cheers

Den

[UK Pete]

WOW with all those bits on the pump  i imagine it has been treated quite bad and had an amature doing the previous build
Pete

[mick]

I had one that looked like that ended up with cam shaft failure due to lack of oil  ,
 
i have 2 spare cranks one with its shells and one with out if your interested?

cheers Mick.

[archmill]

Could be interested mick if they are servicable. Give me a price for both mate. Got a lot to get rid of if you or anyone else are looking for F2 parts, wheels, brakes, tank, seat etc. I want to build a cafe racer so I am keeping the frame and engine and a couple of other parts but basically everything else is going.

[ChrissP]

I think a company called Joy Cams used to do the bronze bearing mod years a go