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Originally Posted by tholyoak
The X51 engine is no different on the bottom end. It is a series of top end modifications, heads, cams and intake, porting etc. Bottom end uses the same parts as the regular 3.6.
While the M96 motors have some issues, personally I don't see this failure as one of them. The 964 based motors have seen crank failures at the track with their true drop forged cranks. To me this is an issue of running a street motor on the track at sustained high rpm for over 12k miles without tear down and inspection or balancing of reciprocating masses.
-Todd
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Now we are back to that old debate about whether running these engines hard is GOOD for them.
Based on that theory, the cars that are tracked should be totally flawless??
