SOHC.co.uk Forums > CB750
Oil pressure issue / motor rebuild
Trigger:
--- Quote from: Bryanj on August 12, 2016, 05:44:14 AM ---Takes quite a bit to remove all the white metal down to the copper, not just a couple of seconds
--- End quote ---
He did say that he rode it to the MOT station, and most probably back.
MrDavo:
A busy day Sunday. I polished the cam cover at last, stripped the carbs for an ultrasonic bath and the choke linkage for a replate.
I also removed and stripped the oil pump. The rotors and their fit together are like new, with slight scuffing, but the endplates are badly marked up. Some scratches in the body but not much. Trigger, are these toast or useable?
Trigger:
Have not seen any used pump covers without slight marks but, it is hard to tell from a picture. Looks like something has been grinding away in there.
MrDavo:
There's certainly been some grinding of swarf going on, I'm convinced the body and rotors will be OK, I was wondering if there was anything to be gained by finding new covers. As you say hard to judge from a photo, the scratches on the covers are quite deep.
If they're all a bit scratched up I might leave it, if you think they're a mess I'll look for newer ones.
Trigger:
It is hard to measure the clearance. May be easier to find another pump and fit a new seal kit. just make sure that there is no glass bead left in any oil ways. It is a sod to clean and that is why I never vapour a engine.
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