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-   -   What makes the CR difference between Euro and US 3.2? (http://forums.pelicanparts.com/911-engine-rebuilding-forum/486400-what-makes-cr-difference-between-euro-us-3-2-a.html)

alniki 07-20-2009 05:17 AM
What makes the CR difference between Euro and US 3.2?
 
What makes the difference in compression ratios between Euro and US 3.2? Piston, head, or cylinder base gasket? They are 10.3 vs 9.5. Thanks!

tom1394racing 07-20-2009 02:06 PM
The difference is in the pistons.

The domes are slightly higher in the Euro version.

alniki 07-20-2009 03:49 PM
Tom, thanks! You are professional.

alniki 07-20-2009 09:05 PM
Also, I presume the CR has increased substantially with those thick carbon deposits on the piston doms.:) Possibly higher than the Euro 10.3:1?:D


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