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Author Topic: E36 M42, modified chip, what rev-limit ?  (Read 2837 times)

DutchM42

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E36 M42, modified chip, what rev-limit ?
« on: August 30, 2007, 08:18:32 AM »
Hey guys. For what max-rpm is the E36 M42 designed ? Currently the OEM-chip cuts fuel at 6700 rpm. The new chip will be set to run on RON98 (highest) fuelquality. Is 7200 rpm a safe limit ? Or can it be stretched to even higher rpm's ?
The connecting-rod bearings in the shortblock have been replaced just to be sure.
« Last Edit: August 30, 2007, 08:22:05 AM by DutchM42 »
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BrandC

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E36 M42, modified chip, what rev-limit ?
« Reply #1 on: August 30, 2007, 02:17:52 PM »
7200 is a safe rev limit. I would not go any higher though.

It will take heavier duty/lighter mass valvetrain parts to rev past 7500 safely. The bottom end should be good to 7500 though.
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