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CB750 K4 rebore

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paul G:
Only one man for that job Trigger  :D

Trigger:

--- Quote from: Phil9886 on July 22, 2020, 07:43:49 AM ---Can anyone recommend a company to complete a re-bore on a set of K4 barrels.  Also I'd like them vapour blasted - so if there was somewhere that you'd recommend who can do both the vapour blasting and rebore that would be ideal.

I've read somewhere that companies not experienced in CB750s can use the wrong tolerances for the re-bore? That seems strange as I would have thought a +0.25 piston would just need a +0.25 barrel over and above the standard to the normal tolerances? But is there anything I should be careful to mention to whoever does this work?

--- End quote ---

It is the piston to bore clearance that no one can get right. Too less and the engine will seize, too much and it will smoke like a chimney . PM me with the details  ;)

gp_st3:
From personal experience I can recommend HT Howard in Slough...

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