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ManniB ManniB is offline
The Bavarian
Join Date: Mar 2012
Location: Pfaffenhofen/Bavaria/Germany
Posts: 247

the shims are the trial of a previous owner to increase the oil pressure. Shimming the spring effectively increases the spring rate which increases the pressure at which the valve opens. However, I have no explanation for the small steel ball???

A little below 1 bar oil pressure at 1000 rpm sounds normal. You do not mention the warm oil pressure while driving. It should be approx. 1 bar per 1000 rpm.

- Manfred
Old 08-05-2013, 04:49 AM
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