<VV> Aviation fuel (gas) in Corvairs

John Kepler jekepler at amplex.net
Tue Dec 2 08:42:56 EST 2008


"It's also generally packed with lead... even "low lead" aviation fuel 
has extremely high lead levels"

You may need to get out a little more....your info is at least 20-30 years
out-of-date!  70% of all av-gas used in the last 25 years is basically 87
octane automotive unleaded...a secondary "Supplemental Type Certificate"
(STC) allows the use of 91 octane pump automotive "Premium" for some old
"low-lead" applications...that covers most Continental and Lycoming engines
built over the last couple of decades.  Conversion to "low-lead" or
"no-lead" capability has been part of an FAA "Major" for the last couple of
decades.  The remaining low-lead fuels have less lead than pump "regular"
did 30 years ago (about 0.12 g/l).  

Old 100/130 "Green" "high-lead" (1.12 g/l), what you are thinking about, is
nearly impossible to find.....military 115/145 "old purple" avgas (with a
whopping 1.8 g/l of lead!), my favorite for brewing racing fuels, is rare,
but still around (look for an airport with something ex-military sporting a
big old P&W or Wright radial parked)...but expensive!


... something that a Corvair neither needs 
nor wants. You can get more octane in a number of easier ways...

Name one?  NASCAR and I would LOVE to know!

John





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