There were some good articles written in past and one of the big differences
is Reid vapor pressure. Avgas is formulated to be used at higher altitudes
than most of us drive our race cars. We used to use it in our Datsun rally
car, but it got v. difficult to get. Most airports around here want to see you
putting it into an aeroplane, road taxes and all.
Roger
>>> "Don Queen" <donqueen@Inreach.com> 05/14/01 11:28AM >>>
It seems that everyone has an opinion on the use of AV gas in a race engine.
I've used it for a few seasons with great results. My Alfa has 11.5 - 1 comp
ratio. I have no preignition and the last leakdown indicated 20 + races with
no need yet for even a valve job.
My aviation mechanic buddies swear by it pointing out that the demands of an
airplane engine far exceed the needs of the average vintage race car.
My engine builder murmurs some incantation about additives, but he's only
repeating what he's heard.
I pay $2.15 a gallon for 110 leaded, less that pump gas on the West Coast.
Opinions, facts, incantations ?
Don Queen
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