Usually excessive revs is said to pump up the lifters (although looking at
the design of the lifter I can't see how unless one is getting valve
bounce). The engine pump presents oil to a cavity that the lifter draws its
supply from or rejects as required in order to take up the clearances,
unused oil leaks out from between the lifter and the crankcase and drops
back into the sump. Presumably the lifters 'leak' at a small rate which
allows the reducing clearances on a warming engine to also be compensated
for. I *suppose* if one got the pressure high enough one could defeat these
leakages, but it would have to be pretty humongous. What are you getting?
Why isn't the pressure relief valve controlling it?
----- Original Message -----
From: "James Nazarian" <jhn3@uakron.edu>
To: "v8" <mgb-v8@autox.team.net>
Sent: Thursday, June 12, 2003 7:26 AM
Subject: Hydraulic lifters
> Here is a problem I would love to have on my stock B...I can't get the oil
> pressure on my V8 low enough. I'm wondering, thought, does too high an
oil
> pressure pump up the lifters and effect valve function?
///
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