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      02-23-2011, 10:39 AM   #19
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Drives: F25 2.8dF82 M4 R1200GS
Join Date: Apr 2007
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Originally Posted by J08M3 View Post
Not laying any blame here.... But has there been a non-supercharged engine that has blown up yet? I know we've seen a number of SC engines that have blown, by a few different SC companies.

Perhaps it's not a very good idea to SC this engine???
I was going to ask the same question!Without lowering the stock compression from 12 to 1 it does not suprise me that some of these failures are happening when the boost levels are elevated.At moderate boost levels (5-7 lbs)thanks to the overengineering that BMW has done on the S65 there does not seem to be these issues.I have a friend who is building Ford 5.0 Coyote engines with 11 to 1 and he feels 7 psi is the upper limit and his units are water/air intercooled.For higher boost levels he feels the compression must be lowered for reliability on pump gas.