<VV> Gulftane

[J R Read_HML]

Perhaps nothing more than a misinterpretation.  It is true that Corvair 
engines (any HP) don't need lead in the gasoline.  But, (as Matt indicated) 
pump gas in the '60s was pretty much all leaded.  That is the grey stuff in 
the oil pan the first time you take one off of an old engine.

But, to say the engines were designed to use unleaded gas seems sort of 
backwards.  They CAN use unleaded gas because of the hardened valve seats - 
which are there because of the aluminum heads.  So, the advantage which 
accrues to us owners driving Corvairs on today's gas is that we do not have 
to add a lead substitute like the owners of some other makes must do.  That, 
or buy the "old fashion" REGULAR or EYTHEL (both with lead) gas if you can 
even find it.

If memory serves (it might not), in the '50s we used to buy (by the gallon 
container) something called "white gas" which I believe was unleaded for use 
in the lawn mower.  Why, I don't know - because that was what dad said to 
do.  Had to walk two miles (uphill both ways - seemed like) carrying that 
can.  <GRIN>  Well, it WAS full on the way back.

Later, JR


----- Original Message ----- 
From: "Matt Nall" <patiomatt at aol.com>
To: <virtualvairs at corvair.org>
Sent: Wednesday, July 01, 2009 11:32 PM
Subject: Re: <VV> Gulftane


>
>
>
> "The corvair motors were originally made to use unleaded, 'Gulftane' fuel 
> in the
> 1960's."
>
>
> =============================================================================
> ??Judge... no flame!
>
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>
>
>
>
> ??More Bad Rumor!!
>
> Unleaded didn't start until 1972 ? in Calif.!!
>
> ?Corvairs were designed in the late '50's!
>
> If Judge would read more of our posts here he would already know that the 
> 80-95 hp Vair engines are approx 8.5 to 1 Compression ratios and run fine 
> on 85 or higher octane.
>
> 102 's and above have approx. 9.25 to 1 ?CR.... ? they normally need at 
> least 89 octane
>
>
>
>
> ??And he would know that todays Octane ratings are derived differently 
> than the 60's... ?so numbers mean nothing
>
>
>
>
> Now lets hear from all those that attest that Higher octane means more 
> power!!! LOL!
>
>
> Matt Nall
> Charleston, Oregon
> http://mysite.verizon.net/nalllm
>
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