DeTomaso Mailing List: June 2001, Message #66

Jack, 

I agree on your earlier comments about reducing the
Rpm's to reduce the oil temps at high Rpm's and that
theory seems well supported by our guys at Silver
State. But, if I understand your theory correctly dry
sump oiling would or should solve the oil temp
problems in our Pantera's that you sugested. However,
as much as wish you and others were correct the test
data available doesn't support the theory. 

Besides Mad Dawg, Larry Stock and Charlie Puckett I've
talked to Pete Beckham, Bobby Byers and Junior Wilson
who have all spent an extensive amount of time with
both dry and wet sump oil systems in our Pantera's at
Silver State and other race cars as well and short of
a major re-design the only other solution besides
going to a taller gear is moving the engine to the
right end or up above the roof! :~) 

I still can't aford to buy that taller ring gear so
perhaps 300F oil temp at 6500 Rpm's for 35 minuts
isn't that bad after all :~)
Kidding, 

Pete "The Kid" Martini
Team Pantera Racing
"If you are not on the edge you are taking up space." 



        
--- JDeRyke@aol.com wrote:
> In a message dated 6/2/01 6:01:35 AM, gt5s@erols.com
> writes:
> snip....
> >...but instead constructing a heat exchanger in an
> enlarged oil pan. The 
> Pantera coolant pipes are located so their
> connection to the pan's exchanger 
> would be easy.>
> 
> Worth a try, Fred. The biggest problem with using
> pans for high-level cooling 
> is IMHO, the flow of oil at the pan walls is
> relatively stagnant and is made 
> worse by the oil in actual contact with the pan
> being cooler and more 
> viscous, so the layer tends to stay there rather
> than circulating. The cool 
> oil then insulates the rest... I used to mess around
> with air-cooled engines 
> and this seemed to be the main limiting factor. Oil
> doesn't give up heat very 
> well; it'll take some tricky designing to get this
> to work well, along with 
> the present baffles and doors etc, but if it can be
> done, it sure saves 
> adding in vulnerable big, long oil lines to an
> external cooler. My own 
> "research" if you can call it that, shows that at
> "reasonable speeds" 
> (e.g-under 120mph), oil temps and water temps are
> very close together. Its 
> only when you start pushing the envelope that oil
> temps get outa hand. 
> My 2 ¢- J DeRyke
> 


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