O/T Compression ratio and supercharging, also efi pumps

[CLsnyder]

LL100 has over twice the maximum amount of lead ever used in automotive pump
gas. No problem with burning valves from lack of lead, but quite possibly a
problem with sticking valves due to lead deposit buildup on stems. Common
problem on some air-cooled aviation engines designed for the older avgas.
----- Original Message -----
From: Todd....!! <atc347 at c-com.net>
To: <diy_efi at efi332.eng.ohio-state.edu>
Sent: Friday, May 28, 1999 5:03 PM
Subject: Re: O/T Compression ratio and supercharging, also efi pumps


> Hi David,
>
> Thanks for the info...
>
> However, as far as the lead content, buds said that the AVGas was kinda
> 'dry' and that I shouldn't run the AVGas too long so as to not burn the
> valves up...
>
> But if you read your source on the net, then it must be true, ey?  lol
>
> LATER!
>
> Todd....!!
> http://www.c-com.net/~atc347/toddlnk.htm
>
>
> David A. Cooley wrote:
> >
> > At 09:55 AM 5/28/99 -0700, you wrote:
> > >FYI - I ran AVgas(Aviation fuel) right from outa the airplane fueler
> > >tanker (They DIDN'T USE THE GROUND STRAP FROM THE TANKER TO THE CAR,
but
> > >DID on all the planes, that coulda hurt!) into my 73 Camaro with a 383
> > >stroker, closed chambered small valve heads(1.94), Edelbrock tunnelram
> > >w/ dual 600 vac holleys, 4-speed, and 3.73 limited slip 10-bolt rear...
> > >was at about 10.5:1 compression... first 5 gallons in the new motor
were
> > >AVGAS, as were the next few tanks.... kinda expensive... started mixin
> > >super and avgas, then went to straight superunleaded(93 octane)...
> > >
> > >Everyone told me it was only 100 octane, the exhaust smelled like race
> > >gas to me....
> >
> > They don't rate AV gas octane the same as regular gas... 100LL av gas is
> > about 105-110 octane in automotive terms... It also has MORE lead (even
> > though it says low lead) than any automotive leaded fuel (Almost twice
the
> > amount)
> > Check out the Gasoline FAQ on the net... Pretty good info there.
> > ===========================================================
> >            David Cooley N5XMT           Internet: N5XMT at bellsouth.net
> >      Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
> >    Sponges grow in the ocean... Wonder how deep it would be if they
didn't?!
> > ===========================================================
>
>
>