Re: Dry Sump Musings

[Doug Odom <dlodom@charter.net>]

I remember a  years ago at the Copper State races at Phoenix the midgets 
all had engines problems with rod bearings. The Cosworths seemed to have 
the most trouble. The high RPM for the long straight without breathing 
was throwing the oil off the rods from centrifugal force. They ground a 
lead in grove on the main journal to force more oil to the rods and that 
took care of the problem. I have had oil pans that would run out of oil 
on a big track with long corners but it was never a problem on the short 
tracks. Just because it works at one race track does not guarantee it 
will work at Bonneville. I know that Bob Joehnck did some testing with 
real light weight Mobil 1 and teflon. It did make more power.
Doug Odom in big ditch

Bryan Savage wrote:

> Has anyone noticed that NASCAR engines use 0W-30?
>
> Does anyone (Dave?) knows what is used in IRL and CART engines?
>
> I called Mobile several years ago and asked about the Mobil1 used in F-1.
> F-1 uses an expensive special oil. It has a synthetic base that  is 
> $25.00 a quart
> (cost to Mobile) before blending in the additives. It is not sold, 
> it's only supplied
> free to teams they sponsor.
>
> It's amazing what you can see by running with clear plastic 
> return/scavenge lines
> in the garage. A sight gage that allows you to see the oil level in 
> the crankcase should
> not be used without a Doctors OK. It's just plane scary with a stock 
> oil system.
>
> Bryan