SOHC.co.uk Forums > CB350/400

Cylinder block O'rings.

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Piki:
Thank you Bitsa, I understand you, but how can I fit the o´rings in its correct location without take off the cylinder block??? :-\ :-\ :-\ I can see a little from the o´ring out from its place, but I can not put it in the correct position because I do not have space to work and I do not want to take off the cylinder block..........

Bitsa (Ralph Wright - RIP):
Piki.
Without removing the barrels it is almost impossible to seat them correctly.When rebuilding the engine I used to smear them with grease and push them home once the block was on they do not shift.If you lift the cylinders to just before the pistons come out its tricky and time consuming but using a feeler gauge you may have success in pushing them back.If they have stretched it will be a bast**d.Why can you not lift the block?I have removed the block many a time with a 400/4 and refitted no problem.Wish you all the best.
Cheers
Bitsa

Piki:
Hi Bitsa, I do not want to take off the block because the rings will change its position(they moves) and then them Will work in other position on the cylinder and this is not good. The engine has 55000 km and I have fit new rings( 53000km)

Bryanj:
Doesn't matter as the rings rotate around the piston when running

Piki:
Hello, really? I read in Forums and talk with the mechanic that it is not good, because the rings  has worked in a position and they are fit about to a determinate shape the cylinder bore if we change the position of the rings, the rings will work in other area of cylinder. When the engine is run, the rings does not rotate or rotate very little............(I read it in Forums and ClassicMechanics)
I can Take off the cylinder block is more easy work for me(I have other o´rings and other cylinder gasket) but I do not know what I can do,  :-\ :( :( :( :-\

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