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Re: Anyone use Avgas 100 LL in place of racing fuel? [Re: Spaceman Spiff] #2792119
07/02/20 11:22 PM
07/02/20 11:22 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
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Joined: Aug 2003
Posts: 43,007
Bend,OR USA
Originally Posted by Spaceman Spiff
[quote=Dodgeguy101][quote=340Cuda]

then why does a place like denver, have a different formulation of fuel....

Avgas 100 LL should be the same formula and chemical makeup no matter who makes it and where it is sold from twocents
I've bought 100LL in Denver to get home from a trip there, no noticeable difference in the smell, price or performance on take off and climbing other than having to lean it out a lot more to get have 50 F degree rich of peak at WOT before take off shruggy
I was taught to always run the motor up to WOT and lean it out to peak EGT and then richen it up 25 to 50 F rich of peak at any airport above 3000 Ft. above sea level before take off, especially in the summer when the density altitude can get way above the local altitude up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Anyone use Avgas 100 LL in place of racing fuel? [Re: A34] #2792383
07/03/20 04:28 PM
07/03/20 04:28 PM
Joined: Feb 2005
Posts: 2,158
God's Country - Etowah, TN.
A34 Offline OP
top fuel
A34  Offline OP
top fuel

Joined: Feb 2005
Posts: 2,158
God's Country - Etowah, TN.
Thanks for all the info guys, this is great.


God Bless America, Our Troops and Their Families !

DEO VINDICE
Re: Anyone use Avgas 100 LL in place of racing fuel? [Re: A34] #2792497
07/04/20 12:54 AM
07/04/20 12:54 AM
Joined: Jun 2005
Posts: 301
central Pa.
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71Pan Offline
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71Pan  Offline
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Joined: Jun 2005
Posts: 301
central Pa.
Go To yellow bullet website alot more info on guys running it and some dyno test etc

Re: Anyone use Avgas 100 LL in place of racing fuel? [Re: 71Pan] #2792656
07/04/20 02:25 PM
07/04/20 02:25 PM
Joined: Feb 2005
Posts: 2,158
God's Country - Etowah, TN.
A34 Offline OP
top fuel
A34  Offline OP
top fuel

Joined: Feb 2005
Posts: 2,158
God's Country - Etowah, TN.
Originally Posted by 71Pan
Go To yellow bullet website alot more info on guys running it and some dyno test etc


up


God Bless America, Our Troops and Their Families !

DEO VINDICE
Re: Anyone use Avgas 100 LL in place of racing fuel? [Re: A34] #2792666
07/04/20 02:57 PM
07/04/20 02:57 PM
Joined: Dec 2014
Posts: 304
Florida
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Mark Whitener Offline
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Posts: 304
Florida
Too much misinformation going on. Too dry, made for high altitude... garbage. 100LL is rates 100 octane lean, 130 octane rich, compares roughly to a 110 race fuel. I have a 461" SB2.2 engine in my dragster at 15.5 to 1, I buy 55 gallons at a time and either use Turbo 108 Plus or Race gas concentrate, a bottle to 55 gallons, My best time with Q16 is 4.71 in the 1/8, with aviation fuel 4.74. $85 for 5 gallons of Q16, under $20 for aviation fuel. I don't suggest it for street use as it is illegal. E85 is a good choice for street if available.


Mark Whitener
[url=www.racingfuelsystems.com[/url]
Re: Anyone use Avgas 100 LL in place of racing fuel? [Re: Mark Whitener] #2792751
07/04/20 07:56 PM
07/04/20 07:56 PM
Joined: Jan 2003
Posts: 30,946
Oregon
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AndyF Offline
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Posts: 30,946
Oregon
jWe use it for dyno testing since it is easier to get than race fuel, is less expensive and it works better than a lot of other fuels. But that might not be the case for other folks. The dyno shop that I work with is located fairly close to a rural airport. Some airports will pump Av gas into containers and some wont. All depends on where you live and who you are. The dyno shop has trouble getting race fuel delivered and it is a long drive to buy it.

Re: Anyone use Avgas 100 LL in place of racing fuel? [Re: Mark Whitener] #2792881
07/05/20 10:00 AM
07/05/20 10:00 AM
Joined: Mar 2018
Posts: 114
NW Indiana
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NW Indiana
Originally Posted by Mark Whitener
Too much misinformation going on. Too dry, made for high altitude... garbage. 100LL is rates 100 octane lean, 130 octane rich, compares roughly to a 110 race fuel. I have a 461" SB2.2 engine in my dragster at 15.5 to 1, I buy 55 gallons at a time and either use Turbo 108 Plus or Race gas concentrate, a bottle to 55 gallons, My best time with Q16 is 4.71 in the 1/8, with aviation fuel 4.74. $85 for 5 gallons of Q16, under $20 for aviation fuel. I don't suggest it for street use as it is illegal. E85 is a good choice for street if available.


^^^THIS!!^^^

Back in the day, we could pull right up to the pumps and buy whatever we wanted, not anymore!

I've been to every airport in a 50 mile radius, and not one will sell to you unless you pull your plane up to the pump. Sure would like to know where you can buy it by the 55 gallon drum.

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