06-26-2003, 12:15 PM
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CC Member
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Join Date: Jun 2003
Location: Carson City, NV,
Posts: 12
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Not Ranked
Restricting Oil to Heads
When using needle bearing rockers it's a good idea
to restrict the oil to the heads even on a street
motor. Needle bearings don't need nearly as much oil. And if you don't restrict the oil with needle bearing rockers you will get too much oil upstairs . I would start with a .090" restriction and then try it. If you still have too much oil under the valve covers, restrict it to .060 and try again.
It may even require smaller restrictors if you hold the engine at high rpm for long periods.
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