<VV> Cooling issues

[BobHelt at aol.com]

Hi Padgett,
Please see below for some comments.
Regards,
Bob Helt


In a message dated 6/25/05 1:46:01 PM US Mountain Standard Time, pp2 at 6007.us 
writes:

>  I also like to braze in washers in the exhaust push rod
> >tubes at the head end.  This creates a higher level for the oil to flow
> >down those tubes and thus the oil flows down the intake (cooler)
> >tubes.
> 
> Would have to wonder at that, after all the oil is also a coolant so would 
> want anywhere cooling was needed, 


Very true, except for two things. First you don't want to have the oil 
picking up heat from the exhaust system. Not a good idea!  Second, while oil is good 
at picking up heat, it's bad at getting rid of that heat. That stock oil 
cooler is marginal at best at cooling the oil. Oil temps in a stock Corvair tend 
to run too high as it is. (see Chev engine test reports)



> 
> My experience with street engines is that you do not want to cruise over 
> 3000 rpm as the IHP (which translates to energy loss which results in heat) 
> goes up with the square of the rpm.


Don't you mean friction HP (FHP) and not IHP?   IHP makes no sense.

Regards,
Bob Helt