What's the difference between these pistons?
03-14-2016, (Subject: What's the difference between these pistons? ) 
Post: #7
RE: What's the difference between these pistons?
(03-14-2016 )Mr Hagg Wrote:  Unilevers I was told at one time the compression ring was lowered on the newer pistons.

Lowering the compression ring also lowers the compression ratio a bit.

Also, there were a lot of CM870 block assy's back then that were converted to CM871's from what I hear. That is likely why your CPL calls for CM870 pistons.

Lots of speculation on all this, so who knows for sure.


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RE: What's the difference between these pistons? - Rawze - 03-14-2016



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