In a message dated 3/20/06 7:20:48 PM Pacific Standard Time, BillB@bnj.com
writes:
<< So my thinking now is, enough oil pressure to meet requirements, and no
more. I rev my engines to 6.8K (maybe a little more when Cameron Healy is in
front of me), so I need fifty pounds. Call it 70 for good luck and that's
what I do. From the looks of my engines it's not a bad thing.
>>
I guess it gets confusing when we talk about oil bypasses. The way I see it
(right or wrong) is that there two bypasses in a stock canister filter head:
1) The main oil bypass with the adjustable spring loaded ball: This one is
adjusted for about 80 psi at 3,000 RPM. In other words, it regulates oil
pressure by sending the bypassed oil back to the sump.
2) The smaller spring loaded ball in the filter head: This is the one you can
consider shimming or plugging shut. Its purpose is to relieve sudden initial
pressure surges due to cold oil. This oil bypasses the filter. I believe
that any oil sent past this ball goes to the oil galley. It has been a while
since I have traced the various oil paths.
Another possible confusing factor is that I have two or three different type
of filter heads lying on the shelves from all of the past engines that I have
torn apart.
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