[Tigers] How hot is hot ?

[MWood24020 at aol.com]

In a message dated 8/29/2008 8:03:06 A.M. Pacific Daylight Time,  
dave at munroe.ca writes:

One of  the reasons why I worry about my engine overheating ( 225- 230F) is 
the  noticeable drop in oil pressure.

When you did your oil temp testing on  horsepower gain, did your FF oil 
pressure drop with a rise in oil  temp?





Which, I guess, brings us to another (but, linked) discussion: "optimal"  oil 
pressure ;-)
 
Yes, we did see drop in oil pressure. Idle pressure, post race, was in the  
10 psi range with about 25-30 psi at anything over 3000 rpm...which was plenty  
in that application, evidently, as we went two years without an engine 
failure.  When the motor was taken down, bearing wear was normal. Keep in mind, this 
is  just a VW motor, air cooled, low(er) rpm etc.
 
The other thing that I didn't consider, when I posted earlier, was  excessive 
piston/piston crown heat, which can lead to power loss...in some  cases, 
TOTAL power loss...I was thinking more of elevated engine heat in the  intended 
operating range.



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