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Avgas

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Matt G:
Hi guys,
Does anyone run an Avgas mix with their regular fuel?
I spoke to a performance shop yesterday who mentioned that I should give some Avgas blue a go. He recommended about 10L into a tank. His comments were that it would help with slight run-on when hot, hot starting due to vaporisation, it smells awesome, and it will burn much cleaner which is clearly visible via the colour of your exhausts, and he repeated a few times that "the old girls love it". (Referencing cars - not our darling wives.....).
Any tips on trying it, or mix ratios, and/or places to buy it? :drivedevil:
Cheers

bootlegger:
I get my avgas from the airport but its illegal to be sold over the counter unless you have a racing licence or fly a plane.
The fine is $1000 per cylinder if the coppers work it out (they have noses too). Having said all the ive run it straight in my vette and it makes a world of difference.  Higheroctane and lead are your friend.

Matt G:
Thanks bootlegger. Solid information. I was wondering why there were a fair few readers and no replies.  At $1000 per cylinder, it might explain the hesitancy to comment.... Trying it could be an expensive experience.  That being said, I might check into the race licence, or speak to a couple of buddies that have plane.
Thanks again.
Cheers

MADVET:
Many years ago I use to run a hi compression bigblock on avgas and would drive to my local airport and have the car filled up directly from the tanker. The guy would hook up one earth cable to my car and drop the other on the ground. This has long been banned and they won't even fill up drums for you either. You can however still purchase it from a Shell depot, it is labelled as "Racing fuel 100". As pointed out by bootlegger you need to produce your racing licence as well as sign some paperwork stating that it's not being used on a public street.
The problem is that this fuel contains lead, even the one marked as low lead so its illegal for street use.
Nowadays since the advent of unleaded high octane pump fuels such as 98 or 100 it really isn't worth the extra cost and trouble.
If need be you can always tip a bottle of octane boost in to unleaded 98 and this would easily handle any of your hi compression or hi boost needs.
The hot ticket nowadays however is to run E85 with dyno shops verifying significant gains running this fuel especially in turbo or superchargrd applications. The only problem with running this fuel is that you need to have a fuel system that can handle a higher volume of fuel as well as the corrosive effect of the fuel.

Matt G:
Hmmm, sounds like I should try the octane boost additive first. I'm not sure about the E85, although I've got a fuel rod and a Barry Grant carbi fitted,  so it might be okay - per your recommendations - however I'll have to look into fitting a supercharger to make it work better.  Sounds like a plan.... add a supercharger so that I can run E85. I love it.  I've had my eye on a particular pro-charger unit for a couple of years.  Now I just have to convince my wife....

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