AV gas ?
 

the kid who used to sell race gas here has moved away. I am tempted to try AV gas. I believe it is 100 LL. cost about $5.30 per. it is my understanding the AV gas uses a different octane rating that car gas. right or no? also the LL stands for low lead, and actually has more lead that auto gas did back in the day.
I know you real racers would not use it. but I am in a tight place. so what are the good & bad points to this.
thanks Rod in AZ

Re: AV gas ?
 

Can't comment as far as class racing goes. As far as bracket racing goes AV gas is my fuel of choice. price and quality make it my best choice. I'm at 11.25:1 but friends have run it at 14:1 with big inch SBC and no problems. As long as it's easily available to me it's what I'll run, if that changed I'd go to e85.

Re: AV gas ?
 

I heard that it wont pass tech for class racers.

Re: AV gas ?
 

Absolutely will not pass fuel check for class stuff.
I am about an hour North of you....... Boat Storage on Canyon Dr.
sells 110 Leaded race gas out of the pump.......I drive the Bracket Cars
a block up the street and "Fill her up" and back to shop.

I had trouble tuning the AV gas from our Airport for my cars....Kind off
stumbled even after tuning a bit! Also the were not interested in selling
it without me flying in and supplying a Number from plane. Been a few year back thou.

Re: AV gas ?
 

My dad has been using it for years on his 12.5:1 BBF with no issues. His motor was gone through this winter and showed no ill effects. But he doesn't class race so rules aren't an issue.

Re: AV gas ?
 

John, how much is it [$$$] there at the boat place? what time do the open or is it a credit card pump? can you give me good directions, please.
thanks Rod in AZ

Re: AV gas ?
 

I think $7.95 a gallon.

Call me (I think you have #) and I will take you up there most any afternoon.

My shop is a block away....Boulder City Trailers

Re: AV gas ?
 

100LL gas is good especially for hot days and or high altitude tracks.
The Vapor Pressure is lower than auto fuel.
Prevents Vapor Lock and allows airplanes to fly at high altitudes.

Re: AV gas ?
 

Rod: FYI, Parker Oil in LHC has drive up, credit card at the pump for 100LL av gas. Price will vary as usual, last I got was $5 per. Beats hand carrying jugs out to the ramp and back when they decide to let you buy. I use the av gas and have for a long time.

Victor in Kingman

Re: AV gas ?
 

There's a few things people don't know about AV gas. AV gas must be transported in a dedicated tanker truck, race gas not so much. AV gas storage tanks must be opened cleaned and inspected periodically. The quality alone makes it a good choice especially compared to places that carry race gas as a sideline in an old tank where the fuel sits for long periods of time. No quality control from the distributor to the consumer.

Re: AV gas ?
 

This subject came up on the Moparts board also and someone pointed out something I had not thought of,.AV gas is most always a lower specific gravity and the carburetor float levels have to be checked / changed going to and from AV gas.

Re: AV gas ?
 

AV gas is not made for land based water cooled engines. It's a bandaid on a gunshot wound. Mix race gas for better function.

Re: AV gas ?
 

Looks like the FAA is close to finishing the phase out of 100LL . Originally supposed to be by 2023 but of course there was pressure to phase out sooner . Might be as soon as this year . I wonder what all the older planes that were designed to run on leaded fuels will do ?

Re: AV gas ?
 

Look up FAA to outlaw 100LL and do some reading. Various companys are working on unleaded versions. Yo gobment at works folks. John Kissel K242

Re: AV gas ?
 

My dad's 1967 C182 has the mogas conversion although he's always run avgas. Not sure what the conversion entails, but that might be an option if/when 100LL is phased out.

Re: AV gas ?
 

I work with the FAA the last 10 years.
They and NTSB are very thorough about safety.
You can go on YouTube and view the newest aircraft engines.
They have impressive features any hotrodder can appreciate.

Re: AV gas ?
 

I have a tid bit for you guy's who may or may not know - if you purchase any race gas at the pump don't expect it to tech at an NHRA event - I believe the problem to be that the tank's being vented to outside air does something to the SG of the fuel - Just my $.02 from my "OLD LOG BOOK" - Bob

Re: AV gas ?
 

I have seen the same thing. I only buy mine from sealed drums.

Re: AV gas ?
 

Rod: If 100 Octane Unleaded is sufficient...The Arco Station in Boulder City has it at
the pump.

Re: AV gas ?
 

AV Gas will not pass NHRA fuel check, there is no spec card because it's not an approved fuel. Approved fuel that checks perfectly out of a freshly unsealed drum will not pass tech if left open to the atmosphere for even a very short period of time, less than an hour for most. If you're running a class that requires fuel check it's best to get it at the track/race and keep it sealed up tight and out of sun light if it's in plastic jugs. If there is any doubt have the fuel check guy test it before you put it in the car. Another tip, if you run a car that requires fuel check DO NOT EVER put unleaded fuel in the tank as it will contaminate the entire system and your "good fuel" will not pass until you've completely flushed the fuel system several times with good fuel.

Jackie McCracken
former NHRA D4 Tech and fuel tester

Re: AV gas ?
 

Just so you guys know, only a few years ago, there was an approved fuel that AV gas could be passed off as .Several of the more shall we say, budget conscience racers were using it. Someone upstairs must have caught wind of this, and it was removed from the approved list.

Re: AV gas ?
 

Was that VP-C9? I set the record one year and after making a run at the points race next year they said C9 is not in the book. Had to switch to C-10.
Questioned why and was told nobody used it?