Thread: Z4M S54: Rod bearings replaced again ...
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      09-03-2013, 02:33 PM   #23
seank
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Quote:
Originally Posted by kennyfrc View Post
This engine only has 60LB of oil pressure for 8K RPM max.
That is about the same as an s14. They recommend atleast 7 psi per 1000 rpms. Upgrading the oil pump would move it to nearly 80psi.
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