Frank,
When I rebuilt the engine, I did check the locating of the rear main seal, to
make sure it wasn't draging on the crank, and all my tolerance seemed pretty
tight.
I have modified my sidedraft intake manifold with vacuum nipples, which I have
connected with an in-line pvc valve to the oil breather on my timing cover, so
I
have plenty of vacuum on the crankcase, which I can feel if I remove my oil
filler cap, so even if the rear main was having problems, it seems like the
negative pressure in the crank-case should compenste for that. I will check out
my oil pressure relief valve, which I did renew when I rebuilt the engine.
Regards - Bryan
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>To: spridgets@autox.team.net
>CC: Bryan Vandiver <Bryan.Vandiver@eng.sun.com>
>Subject: Re: 1275 oil pressure
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>Bryan Vandiver <Bryan.Vandiver@Eng.Sun.COM> wrote:
>
>> my normal starting oil presure is between 80-90 lbs,
>
>I would check the oil relief assembly spring and plunger.
>That is too much pressure. 60-70 psi is the norm.
>If your oil leak is coming from the rear of the engine, check the PCV
>system.
>Do you have a PCV? 1275s need it.
>One other thing, on assembly of the engine EXTRA care should have been
>taken to make sure the "oil slinger/rear main seal" was perfectly
>aligned or it will leak. (See leak free engine tech tips on PDLJMPR)
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