[DeTomaso] Oil pan gasket recommendation?

[Larry - Ohio Time Corp]

Hi Mike,

You may want to check you venting / PCV system. At high RPM the blow-by is
at its highest. I have seen crank cases pressurized and blow oil out a
normally good seal. If your heads are full of oil the venting system may not
be working to well.

Larry (no, tarter sause) - Cleveland



-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of MikeLDrew at aol.com
Sent: Wednesday, October 01, 2008 1:18 PM
To: msm at portata.com; detomaso at realbig.com
Subject: Re: [DeTomaso] Oil pan gasket recommendation?


In a message dated 10/1/08 10 03 3, msm at portata.com writes:


> Are you running with the stock pan?
> 

What a silly question.   What right-thinking race-track-driving Pantera 
driver would run with a stock pan???? :>)

I've got an Aviaid 10-quart pan, and a huge oil leak from the front of the 
engine.   Everybody presumed it was from the front of the intake, but no--I 
pulled the intake earlier this year to have the top machined down so that
the air 
cleaner would fit under the screen, and there was no evidence of leaking 
there--either before or after.

It's either coming from the front seal on the oil pan, or the front main 
seal.   I need to troubleshoot it further.   I will probably just go ahead
and 
change the oil pump and the oil pan gasket at the same time, although
hopefully 
before then I will have found the source of the leak, so if it's the front
main 
seal, I can do everything at once.

Interestingly, the engine doesn't leak oil during normal cruise (at least, 
not as far as I can see?)   However, two dyno runs (totalling perhaps 15
seconds 
of wide-open throttle between them?) resulted in a dinner-plate-sized puddle

of oil on the dyno. :<(   

So the problem seems to be rpm/load dependant.   FWIW I have 75+ psi of oil 
pressure at 2000 rpm; the gauge is pegged so I can't see how high it
actually 
goes.   But the oil appears to be leaking from a low-pressure area, i.e. oil

pan or front main seal, so that doesn't seem to be a contributing factor.

Mike



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