SOHC.co.uk Forums > CB350/400
Replace a cylinder sleeve / liner.
Trigger:
This is not as easy as it seems. Never had a worn bore that is round in all my 28 years of doing this job. Pistons are not round at the skirt, this means a bore is not round with use.
You need to get the piston to bore clearance right or it will smoke and burn oil with low compression.
Erwin83:
Thanks! I’ll definitely check before putting everything back together.
Trigger:
The bores in your picture have rust were water has been sitting on the pistons. You will need a piston kit over size and a re bore. If you try to clean up those bores, they will not be within spec ;)
Erwin83:
The cylinder with rust is replaced now, so there is no more rust.
The piston seems to clean up well.
So, I need a clearance check, (all is standard size now), maybe a hone job and a ring kit.
I wouldn't know why I would bore 4 good cylinders to oversize..?
Nurse Julie:
--- Quote from: Erwin83 on February 02, 2020, 09:56:18 AM ---The cylinder with rust is replaced now, so there is no more rust.
The piston seems to clean up well.
So, I need a clearance check, (all is standard size now), maybe a hone job and a ring kit.
I wouldn't know why I would bore 4 good cylinders to oversize..?
--- End quote ---
It doesn't matter how good or undamaged the cylinders are if they are very close to or beyond spec, they may still need a rebore.
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