AvGas

[06BaNsHeE]

I bet most of the people that say you cant use av gas(100LL same thing) havent even tried it.It mixes fine with yamalube :thumbsup:

[kojack]

Whats the average price to pay for a gallon?

$4 dollars is what i paid today.

[kojack]

$4 dollars is what i paid today.

me and my buddy have pretty close setups and have run av gass for over a year and they still run great. I was having detonation problems with pump gass and the av gass gives me no issues. One of the local stealerships rags on av gass and wants me to buy his c12 but i see no need with the performance and reliability im getting. Buzz on

[FireHead]

I bet most of the people that say you cant use av gas(100LL same thing) havent even tried it.It mixes fine with yamalube :thumbsup:

 

I have run 100LL before, actually, and I have never said it would hurt anything. I still stand behind my opinion that if you have a choice, it is better to run the proper race gas. To add a bit of fuel to the arguement, why is it that folks who race for a living don't run AV gas if it is that much cheaper, and no different than race gas.

 

I am not going to get into a heated discussion about which is better or which you should as it always winds up with one of these folks getting butt hurt about it and repeating something that someone who is dumber than they are told them. I understand the chemistry behind the fuel, I do race engine development for a living, and I will not use AV gas unless I could not find anything else. That being said RNBRAD probably provides the most scientific arguement around for the difference between AV gas and race gas in the second link I posted.

 

http://www.bansheehq.com/forums/index.php?...amp;hl=race+gas

 

http://www.bansheehq.com/forums/index.php?...amp;hl=race+gas

[dawarriorman]

I have run 100LL before, actually, and I have never said it would hurt anything. I still stand behind my opinion that if you have a choice, it is better to run the proper race gas. To add a bit of fuel to the arguement, why is it that folks who race for a living don't run AV gas if it is that much cheaper, and no different than race gas.

 

I am not going to get into a heated discussion about which is better or which you should as it always winds up with one of these folks getting butt hurt about it and repeating something that someone who is dumber than they are told them. I understand the chemistry behind the fuel, I do race engine development for a living, and I will not use AV gas unless I could not find anything else. That being said RNBRAD probably provides the most scientific arguement around for the difference between AV gas and race gas in the second link I posted.

 

http://www.bansheehq.com/forums/index.php?...amp;hl=race+gas

 

http://www.bansheehq.com/forums/index.php?...amp;hl=race+gas

In regards to that second link, Motor octane is motor octane, the same test that VP uses (should use, ASTM) is what 100LL gets 100 in. The other test that is performed on 100LL is in my post in that link. Gasoline that is 100% isooctane (100 octane by definition) would score 100 in that test. 100LL scores 130. Nobody knows what race gas would score, because they don't test race fuel with that test.

 

And as far as race teams using Av gas, I know of quite a few drag racing teams that use 100LL around here. As to why bigger name teams don't use it, I suspect that it isn't enough octane and/or they can't get Shell or BP to sponsor them while they can get VP to sponsor them.

[FireHead]

And as far as race teams using Av gas, I know of quite a few drag racing teams that use 100LL around here. As to why bigger name teams don't use it, I suspect that it isn't enough octane and/or they can't get Shell or BP to sponsor them while they can get VP to sponsor them.

 

I didn't really want to open up the octane rating can of worms as that can be and has been a whole other gigantic thread.

 

Local race folk using AV gas gets back to the same arguement that was made above for using AV gas. They either think that it's no different than racing fuel or simply they cannot get race fuel in sufficient quantities.

 

The reasoning behind why my company doesn't use AV gas for anything is multi-faceted. The first reason is fairly simple, and accounts for about half of our programs, which is that we can run a more suitable fuel (methanol, nitormethane, etc.) or the fuel is specifiec in the rules. For our Truck, Busch, and Cup engine programs, the fuel spec. is part of the rules, so that's what we run. For the engine programs for which fuel used is wide open, we run a few different types of race fuel. The variations being octane rating and oxygenation additives. The reason we do not run AV gas in these programs, and we would if we could as it is less expensive in many cases, is that when we have tested different fuel chemistries for the engine specification (part of all of our open fuel spec. engine programs) and found that it produces less uniform cylinder temperatures and pressures, in many cases produces less performance, and in some cases lower longevity of engine components (valves and pistons primarily).

 

So like, I said above, a person should choose what fuel they feel is best for them. I am certainly not going to force my opinion on anyone. I also do not feel the need to aid in the continuation of some of the AV gas myths that have been around for 100 years.

 

If I can get a chance, sometime in the near future, I will dig up some of the docuementation I have on fuel additives, as it is nagging at me that there is something to do with one of the surfactants that may be used in AV gas that is bas news for your reeds. Maybe you can remember what it is as I feel that I am not that current on the subject. :thumbsup:

[kb7kuh]

I ran Avgas for about a year with no problems after I upped the compression on the motor. I went riding for the weekend and the bike would not start. I checked everything and found that after sitting for 2 weeks the gas gelled in the fuel lines. I cleaned them out, and it started fine. After it sat overnight, it did it again, the best way to describe it is a green goo. I don't know if it was the oil or the gas, but it worked great for a year.

 

Since then I have switched to race gas, and had no problems.

[06BaNsHeE]

I ran Avgas for about a year with no problems after I upped the compression on the motor. I went riding for the weekend and the bike would not start. I checked everything and found that after sitting for 2 weeks the gas gelled in the fuel lines. I cleaned them out, and it started fine. After it sat overnight, it did it again, the best way to describe it is a green goo. I don't know if it was the oil or the gas, but it worked great for a year.

 

Since then I have switched to race gas, and had no problems.

 

 

I left my bike sitting from July24-Aug2 with no problems.Mixed at 24:1 with yamaube(I had a fresh topend).It was hard to start tho.But it was rwally hard to start.But once I raise my compression over 170 I will use the C-12 that I have.

[FireHead]

I ran Avgas for about a year with no problems after I upped the compression on the motor. I went riding for the weekend and the bike would not start. I checked everything and found that after sitting for 2 weeks the gas gelled in the fuel lines. I cleaned them out, and it started fine. After it sat overnight, it did it again, the best way to describe it is a green goo. I don't know if it was the oil or the gas, but it worked great for a year.

 

Since then I have switched to race gas, and had no problems.

 

As there are a million variants of fuel out there that people with call AV gas whether it is correct to do so or not. You may have come across a variant that is not compatable with rubber fuel lines. :thumbsup:

[trueraiderfan]

I use av gas. Works great for me and all my buddies that have banshee's. and some of them have ran it for 10 years with no prolbems

[FireHead]

I use av gas. Works great for me and all my buddies that have banshee's. and some of them have ran it for 10 years with no prolbems

 

Do you know what kind of AV gas your are using (fuek type ,octane rating, brand name, octane rating type, etc.)? I think that may benefit a few people on here that were asking questions as well as maybe helping further this discussion. :thumbsup:

[FireHead]

http://www.bansheehq.com/forums/index.php?...mp;#entry637029

 

This is the end all thread for the AV gas vs. race gas dillema. I couldn't find it earlier and some one finally dug it up. :thumbsup:

[trueraiderfan]

Do you know what kind of AV gas your are using (fuek type ,octane rating, brand name, octane rating type, etc.)? I think that may benefit a few people on here that were asking questions as well as maybe helping further this discussion. :thumbsup:

 

Sure no prolbem bro. I use the 100ll that they have at the local airport and I do Believe that it is a Phillips that has their name on the pump and the current price on it as of 3 days ago was 3.58/ gallon so not too bad. Hell of a lot cheeper that vp or anything like that. But my compression is around 165-175 cant remeber cxactly so if it goes any higher you would probably wanna use some more potent stuff.