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Re: AV GAS [Re: Thumperdart] #1798291
04/08/15 02:51 AM
04/08/15 02:51 AM
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Posts: 304
Florida
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Mark Whitener Offline
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Florida
Av gas is no problem, I would run it up to about 13 to 1 as is. Add any one of a number of octane boosters with MMT and I might even try it at 15 to 1. Av gas is rated different, it's 100 octane lean, 130 rich. For those that don't believe you really have no understanding of fuel properties. If you look at the characteristics it is almost identical to most 110 fuels. It has to burn very clean so it doesn't leave deposits that could foul plugs, don't want that at 10,000 ft. And that 10,000 ft thing, it as to operate correctly from 0 ft up. Wake up and smell the BS the fuel companies want you to believe...


Mark Whitener
[url=www.racingfuelsystems.com[/url]
Re: AV GAS [Re: Thumperdart] #1798337
04/08/15 09:13 AM
04/08/15 09:13 AM
Joined: Jan 2003
Posts: 12,471
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 12,471
Marion, South Carolina [><]
I agree w/ Mark. I know too many people running it exclusively in some stout motors and they never have any trouble. One even runs it in a 13:1 BB chevy w/ nitrous. Would I do that? No, but he has for years.

As far as getting it...I walk into my local airport carrying my gas jugs. Tell the lady I want some fuel and she walks me out the back door onto the "boarding" area of the pavement where the pump is and asks me how much I want. They won't let you pull your car in there and fill up, but don't mind if you empty your jug into the car right outside the gate, lol.


CHIP
'70 hemicuda...8 sec street car
'69 road runner 440 w/ Indy SRs
'69 road runner 440-6, 4 speed...Dad's ride
'71 Demon 340 resto project
'06 GMC 2500HD LBZ Duramax...toy hauler
'16 Grand Caravan SXT...baby hauler
Re: AV GAS [Re: Challenger 1] #1798358
04/08/15 10:04 AM
04/08/15 10:04 AM
Joined: Jan 2003
Posts: 4,615
Kissimmee Fl.
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dusturbd340W5 Offline
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Kissimmee Fl.
Originally Posted By Challenger 1
Aviation gas is formulated for low rpm engines at higher altitudes and does not have the BTUs race gas can produce. It sure is better than pump 93 octane that's for sure. It has very different specific gravity also that must be accounted for when tuning. [url=http://www.automotiveu.com/racevsav.htm][/url]
Anyone know what this is?

I'm turning 2300 rpm and it's almost redlined on 100LL!
http://i21.photobucket.com/albums/b260/challenger19711/After%2012-8-14/IMG_52541.jpg


for taking fuel samples out of wing tanks to look at color and to check for water


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: AV GAS [Re: Thumperdart] #1798382
04/08/15 10:38 AM
04/08/15 10:38 AM
Joined: Aug 2009
Posts: 456
corpus christi tex
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Cheatham Offline
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corpus christi tex
As stated aircraft engines hardest job is during take-off so its not a high altitude only fuel, 100ll is very clean and dry and probably qa better than race fuels, 100ll can be found in outside areas of big towns at smaller community airports were you can usually drive up to the pump insert your credit card and buy what you want and is usually couple dollars cheaper than the regional airports, we have it for 4.50/gal and the city airport is about 6.00+ i think you can google av gas prices in your area and it should show the airports around you who have it.

Re: AV GAS [Re: dusturbd340W5] #1798383
04/08/15 10:38 AM
04/08/15 10:38 AM
Joined: Feb 2012
Posts: 4,308
Morristown Tn.
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71birdJ68 Offline
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Morristown Tn.
In years gone by, different octanes of AV gas was a different color. So according to the requirement of your engine, you checked to make sure you had the right gas. Now a days, all that is available is 100LL, and as far as top end lube goes, that LL means low lead. Us in the aviation world call it lots of lead. It already lubs the top end, so I don't see the need for any extra lube. But it also causes a lot of problems also, like stuck valves, and leaded up plugs. They are working on a unleaded AV gas so they can get rid of the lead.

Re: AV GAS [Re: Thumperdart] #1798432
04/08/15 11:46 AM
04/08/15 11:46 AM
Joined: Jan 2003
Posts: 12,471
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 12,471
Marion, South Carolina [><]
The 100LL I've gotten for the last 15 years is a light blue color. NEVER ran any sort of lube or oil w/ it.


CHIP
'70 hemicuda...8 sec street car
'69 road runner 440 w/ Indy SRs
'69 road runner 440-6, 4 speed...Dad's ride
'71 Demon 340 resto project
'06 GMC 2500HD LBZ Duramax...toy hauler
'16 Grand Caravan SXT...baby hauler
Re: AV GAS [Re: Thumperdart] #1798451
04/08/15 12:12 PM
04/08/15 12:12 PM
Joined: Jan 2003
Posts: 9,825
las vegas
70AARcuda Offline
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70AARcuda  Offline
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las vegas
Used to be easy to get av gas in vegas, the county took over all the small airports in Clark County. ...and they will not sell it to you


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: AV GAS [Re: Thumperdart] #1798482
04/08/15 12:53 PM
04/08/15 12:53 PM
Joined: Jul 2010
Posts: 1,486
Oologah, Oklahoma
Big Squeeze Offline
pro stock
Big Squeeze  Offline
pro stock

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Oologah, Oklahoma
I've used it straight for at least 18 years in everything from a 13.2 to 1 iron headed Max Wedge motor to a 15 to 1 Indy -1 headed 572 that ran 10.0's (tested it back to back at the track and ran EXACTLY the same)...


If you can't handle the truth, you're living a lie.......
Re: AV GAS [Re: 70AARcuda] #1798842
04/08/15 08:01 PM
04/08/15 08:01 PM
Joined: Jul 2004
Posts: 19,287
State of confusion
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Thumperdart Offline OP
I Live Here
Thumperdart  Offline OP
I Live Here
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Posts: 19,287
State of confusion
Originally Posted By 70AARcuda
Used to be easy to get av gas in vegas, the county took over all the small airports in Clark County. ...and they will not sell it to you




Good info and that takes care of that since I don't own a plane. Where do you get your race gas from? Thankxxx.......


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: AV GAS [Re: Thumperdart] #1799446
04/09/15 02:17 PM
04/09/15 02:17 PM
Joined: Sep 2006
Posts: 220
Portland, OR
shawge Offline
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shawge  Offline
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Portland, OR
Don't you own an ultralight? You need to buy fuel for your ultralight (wink wink) biggrin

Re: AV GAS [Re: dusturbd340W5] #1799503
04/09/15 03:41 PM
04/09/15 03:41 PM
Joined: Feb 2005
Posts: 28,308
Cincinnati, Ohio
Challenger 1 Offline
Too Many Posts
Challenger 1  Offline
Too Many Posts

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Posts: 28,308
Cincinnati, Ohio
Right on...dusturbd340W5. I am just learning to fly, so you may know more than I do I bet. I have only logged 4.5 hours in the air so far, so I am really "green"

I believe you guys who have used it and have found no difference between it and race fuel. I can't say I have used both back to back to say for sure one way or another.
I do know 100LL is currently at $5.24 gallon around here which is 2.45 cents cheaper than 110 Sunoco leaded.

Thumper I believe a lot guys rent planes and don't own them. I'd call local fuel/oil company's in your area, that who sells race fuel around here.

Last edited by Challenger 1; 04/09/15 03:44 PM.
Re: AV GAS [Re: shawge] #1799532
04/09/15 04:16 PM
04/09/15 04:16 PM
Joined: Dec 2014
Posts: 304
Florida
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Mark Whitener Offline
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Mark Whitener  Offline
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Joined: Dec 2014
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Florida
Originally Posted By shawge
Don't you own an ultralight? You need to buy fuel for your ultralight (wink wink) biggrin


Or an airboat with a Lycoming or Continental engine, right?


Mark Whitener
[url=www.racingfuelsystems.com[/url]
Re: AV GAS [Re: Thumperdart] #1799622
04/09/15 06:00 PM
04/09/15 06:00 PM
Joined: Jan 2003
Posts: 9,825
las vegas
70AARcuda Offline
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70AARcuda  Offline
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Joined: Jan 2003
Posts: 9,825
las vegas
Originally Posted By Thumperdart
Originally Posted By 70AARcuda
Used to be easy to get av gas in vegas, the county took over all the small airports in Clark County. ...and they will not sell it to you




Good info and that takes care of that since I don't own a plane. Where do you get your race gas from? Thankxxx.......


E 85 from the pump from Terrible Herbts...some Terrible Herbst sell 100 unleaded at them..but it is 7.99999 a gallon..

they also have a bulk station at I-15 and Sahara that used to sell 110 leaded cheaper then the 100 unlead...but you have to pump it into a can since it is a "off highway" fuel..no taxes on it..


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: AV GAS [Re: 70AARcuda] #1799649
04/09/15 06:25 PM
04/09/15 06:25 PM
Joined: Nov 2006
Posts: 733
jacksonville,FLORIDA
slammedR/T Offline
super stock
slammedR/T  Offline
super stock

Joined: Nov 2006
Posts: 733
jacksonville,FLORIDA
Mark Hedrix here in town has a very good maghine shop and very good reputation for building top of the line engines here in the northeast Florida area. I talked to him about AV gas two years back as my buddy Michael Williams insited on running it in his pro street 434 stroker s-10. Mark said he also had some customers who swore by the av gas and decided to test it against C16 on his engine dyno. The engine was a 14.5:1 632 big cheif BBC he was building for a customer wanting to run the gas in his mud truck. He tested both fuels in this motor on his engine dyno and told me the c16 only made 5hp more than the av gas and the av gas had no signs of detonation or funny burn patterns. He was surprised how well the fuel actually performaed. He said the only thing he recommends with av gas is add a bottle of lead additive as the av gas is "Low Lead" whihc is what the LL stands for. Also the 100LL here at Herlong airport and that he tested with is more around 110-112 octane. Ran it for two years in buddy S-10 which was a 14.0:1 motor with two stage 400shot of nitrous and never had any issues. As stated you just drive up to the pump with jugs or a drum and fill up with a credit card. Just don't try to fill a car with it at the pump, legally that isn't allowed and will ask you to leave and come back with fuel jugs for your airplane or offroad equipment you are putting it in "wink,wink"

Last edited by slammedR/T; 04/09/15 06:26 PM.

2000 Dakota R/T, 408 magnum, 727, Indy heads
1000cfm 4150 carb, 93 octane fuel.
motor; 10.258 @ 132.78
200 shot; 9.262 @ 144.69
racemagnum
Re: AV GAS [Re: slammedR/T] #1799668
04/09/15 06:44 PM
04/09/15 06:44 PM
Joined: Jan 2011
Posts: 4,782
Utah and Alaska
astjp2 Offline
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Utah and Alaska
Originally Posted By slammedR/T
Mark Hedrix here in town has a very good maghine shop and very good reputation for building top of the line engines here in the northeast Florida area. I talked to him about AV gas two years back as my buddy Michael Williams insited on running it in his pro street 434 stroker s-10. Mark said he also had some customers who swore by the av gas and decided to test it against C16 on his engine dyno. The engine was a 14.5:1 632 big cheif BBC he was building for a customer wanting to run the gas in his mud truck. He tested both fuels in this motor on his engine dyno and told me the c16 only made 5hp more than the av gas and the av gas had no signs of detonation or funny burn patterns. He was surprised how well the fuel actually performaed. He said the only thing he recommends with av gas is add a bottle of lead additive as the av gas is "Low Lead" whihc is what the LL stands for. Also the 100LL here at Herlong airport and that he tested with is more around 110-112 octane. Ran it for two years in buddy S-10 which was a 14.0:1 motor with two stage 400shot of nitrous and never had any issues. As stated you just drive up to the pump with jugs or a drum and fill up with a credit card. Just don't try to fill a car with it at the pump, legally that isn't allowed and will ask you to leave and come back with fuel jugs for your airplane or offroad equipment you are putting it in "wink,wink"

I have taken table spoons of lead out of the plugs when cleaning them, Low Lead is a misnomer, there is about 3 times as much lead in 100LL than what car gas used to contain. I run 10-25% 100LL with alcohol free gas to keep from lead fouling plugs. Tim


1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta

I didn't do 4 years and 9 months of Graduate School to be called Mister!
Re: AV GAS [Re: Thumperdart] #1799669
04/09/15 06:44 PM
04/09/15 06:44 PM
Joined: Dec 2014
Posts: 304
Florida
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Mark Whitener Offline
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Mark Whitener  Offline
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Joined: Dec 2014
Posts: 304
Florida
You want to use additives with MMT, MMT will actually enhance the leads octane suppression more than adding more lead.


Mark Whitener
[url=www.racingfuelsystems.com[/url]
Re: AV GAS [Re: Thumperdart] #1799694
04/09/15 07:11 PM
04/09/15 07:11 PM
Joined: Mar 2005
Posts: 525
Can , Nova Scotia , Cape Breto...
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caper Offline
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caper  Offline
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Joined: Mar 2005
Posts: 525
Can , Nova Scotia , Cape Breto...
What is MMT?


New best 10.18 , 1.40 60 ft 496 Scott Brown built, street driven 3600 lbs,654 hp , 653 ft tq
Re: AV GAS [Re: 70AARcuda] #1800245
04/10/15 12:37 PM
04/10/15 12:37 PM
Joined: Jul 2004
Posts: 19,287
State of confusion
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Thumperdart Offline OP
I Live Here
Thumperdart  Offline OP
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Joined: Jul 2004
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State of confusion
I've been using 100 unleaded since I freshened up my motor over 3 years ago and love it but it's pricey but whatever I trust it more than pump junk. My Ranger pings on that crap so no way it's going in my Dart. I'll see if I can get some av gas and if not then back to100 it is for now.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: AV GAS [Re: caper] #1800414
04/10/15 04:10 PM
04/10/15 04:10 PM
Joined: Dec 2014
Posts: 304
Florida
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Mark Whitener Offline
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Mark Whitener  Offline
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Joined: Dec 2014
Posts: 304
Florida


Mark Whitener
[url=www.racingfuelsystems.com[/url]
Re: AV GAS [Re: Thumperdart] #1800415
04/10/15 04:16 PM
04/10/15 04:16 PM
Joined: Dec 2014
Posts: 304
Florida
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Mark Whitener Offline
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Mark Whitener  Offline
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Posts: 304
Florida
NOS, Turbo 108, Lucas, as well as others all have octane booster products with MMT in it.


Mark Whitener
[url=www.racingfuelsystems.com[/url]
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