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matty.dc 09-09-2012 03:56 PM

I've just started to pull apart my s52. The pistons are out and I'm now looking into the measurement/hone or bore stage.

On the top of cylinder 3 there is a very slight lip of around 0.001" and on cylinder 4 of around 0.002-0.003".

My question would be, should this be taken care of by an overbore or will a quick cylinder hone be an acceptable route? If a bore was needed, what is the max allowable bore that I can run stock pistons in?

Thanks for the help!


BmW1819 09-09-2012 08:09 PM

u can always get over sized rings to fill the .003
piston size is 86.4 i think for s52 u can get one size ring 86.6 if they gotta take more than u gotta get piston

don't wanna risk the lip cause at high rpms it may collapse the the rings :(

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