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#1
08-11-2003, 02:15 PM
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our local airport sells 100 octane aviation fuel in low lead and no lead. what are the pros and cons of running aviation fuel? will it hurt anything? Its alot cheaper then race gas.
 1974 ventura 455 670 heads victor 1050 dominator 250hp NOS Tubbed Caged Lots more. |
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#2
08-11-2003, 02:15 PM
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our local airport sells 100 octane aviation fuel in low lead and no lead. what are the pros and cons of running aviation fuel? will it hurt anything? Its alot cheaper then race gas.
1974 ventura 455 670 heads victor 1050 dominator 250hp NOS Tubbed Caged Lots more. |
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#3
08-11-2003, 02:26 PM
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Pros: None
Cons: AV fuel is formulated for low oxygen situations. It is not intended for sea level driving. Stay away from it and use race fuel. "I ain't a killa but don't push me....." Tupac |
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#4
08-11-2003, 03:08 PM
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Av Gas burns extremely lean in a car. I know one Pontiacer who thought it was cheap too. He found out the hard way. Holes in 2 pistons. It's made for flyin in the sky. Spend the couple of extra bucks per gal and do your engine a favor.
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You know it's going to be a good day when you wake up breathing! |
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#5
08-11-2003, 03:31 PM
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Yup keep buying race gas @ $4.50 a gal. That Avgas stuff is reversed engineered from some alien spacecraft. I would never put that stuff in my car. Aircraft engines use some special alloy pistons that came from the same alien spacecraft so that the pistons done burn holes through them.
Disclaimer: The above is total sarcasum. <Cons: AV fuel is formulated for low oxygen situations. It is not intended for sea level driving.> Hey Bruce, guess they use a different fuel for turbo-charged aircraft engines. "Suppose you were an idiot... And suppose you were a member of Congress... seems I repeated myself." --Mark Twain 
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Less said,,,,,,,, Less mended. |
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#6
08-11-2003, 03:47 PM
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Yes, they do...........
 But hey, if you like burning up pistons, please, continue to save the $1.40 a gallon...... "I ain't a killa but don't push me....." Tupac |
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#7
08-11-2003, 03:51 PM
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Ha, Ha, Ha!
 Nothing stirs up controversy around here like the 'ol 'Av gas -vs- race gas' topic!  http://kurtspontiac.homestead.com/TimSimpson66GTO.html |
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#8
08-11-2003, 03:54 PM
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Ha, Ha, Ha!
Nothing stirs up controversy around here like the 'ol 'Av gas -vs- race gas' topic! <HR></BLOCKQUOTE> LOL....... My first reaction was "OH NO!"  "I open up three deuces, I'm Never Coming Back!" http://www.tripower455.com |
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#9
08-11-2003, 05:31 PM
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Goatman:
But hey, if you like burning up pistons, please, continue to save the $1.40 a gallon......<HR></BLOCKQUOTE> And how does avgas burn up pistons? "Suppose you were an idiot... And suppose you were a member of Congress... seems I repeated myself." --Mark Twain
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Less said,,,,,,,, Less mended. |
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#10
08-11-2003, 05:39 PM
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by SupergasDil:
Av Gas burns extremely lean in a car. I know one Pontiacer who thought it was cheap too. He found out the hard way. Holes in 2 pistons. It's made for flyin in the sky. Spend the couple of extra bucks per gal and do your engine a favor.<HR></BLOCKQUOTE> The great part about being right is, there are others that know too......... "I ain't a killa but don't push me....." Tupac |
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#11
08-11-2003, 06:45 PM
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We should get an aircraft mechanic to comment on this...
Someone that holds a certification. I remember one arguing against using AVGAS last time. Wait, no there was 2. Wasn't one of them fresh out of school too? Quoting exam questions? I dunno. Heeheee
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______________________________ 1968 Firebird Coupe - 3665 lbs. 350 HO Long Branch Manifolds TH350 3.23 open BP axle PS, PDB and Deluxe interior GPE Starter ... Small body HEI ... 2.5" Pypes w/X-pipe ... Ruggles Qjet 14.1 @ 99.1 |
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#12
08-11-2003, 06:55 PM
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Av fuel is oxgenated: Fact.
Race gas is not: Fact. One is much cheaper than the other, yet RACERS still use the more expensive one: Fact. Ever know 99.99% of all racers out there to use a more expensive product over another for no reason? Hell, I see guys hauling 8+ bottles of nitrous (a hazardous material) with them instead of filling at the track because its more expensive..... "I ain't a killa but don't push me....." Tupac |
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#13
08-11-2003, 07:12 PM
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR> We should get an aircraft mechanic to comment on this... <HR></BLOCKQUOTE>
We already did I will let him post his own certifications, but I know him personally and the man knows what he's talking about. http://kurtspontiac.homestead.com/TimSimpson66GTO.html |
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#14
08-11-2003, 07:24 PM
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AvGas is oxgenated? News to me. And what might be the additive that does this? Facts only!
Nitrous hazardous? Jee, I better go tell my dentist to stop using it. <We should get an aircraft mechanic to comment on this... Someone that holds a certification. I remember one arguing against using AVGAS last time. Wait, no there was 2. Wasn't one of them fresh out of school too? Quoting exam questions? I dunno.> And your point is? "Suppose you were an idiot... And suppose you were a member of Congress... seems I repeated myself." --Mark Twain
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Less said,,,,,,,, Less mended. |
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#15
08-11-2003, 07:49 PM
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Doesn't matter how talented an AIRCRAFT mechanic you are or claim to be. It doesn't qualify you to state that Aircraft gas is good for running in any other application, period. Knowing Aircraft is not knowing everything else. You are no different than a Diesel mechanic or ASE Mechanic. We all have a specific profession. I can’t claim to be ASE just because I work on my own car.
Your argument sums up as: “What's good for an aircraft engine is good for my passenger car engine. And what good for me is good for everyone else.” Like I said before, it’s irresponsible to suggest such a thing without some suggestion of caution. I some how doubt you take such a cavalier attitude toward the Aircraft you maintain. If you did, you wouldn't be an A&P for long. If I recall you have 15 years under your wrench? I just don't know why you’re this casual with other people’s rigs. Avgas DOES run different than race gas or pump gas. IT is different. If it wasn’t a consideration, pump gas and Avgas would be the SAME. If a person was to run Avgas they would need to make sure the engine was in the correct tune to do so. Don’t really want to get into the drying effect that Avgas has. Proper gasket material, O-ring composition etc. You know all this… You have to deal with it on Aircraft.
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______________________________ 1968 Firebird Coupe - 3665 lbs. 350 HO Long Branch Manifolds TH350 3.23 open BP axle PS, PDB and Deluxe interior GPE Starter ... Small body HEI ... 2.5" Pypes w/X-pipe ... Ruggles Qjet 14.1 @ 99.1 |
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#16
08-11-2003, 08:00 PM
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I used it 3 yrs in a bracket 455 I built. Car ran EVERY weekend for 5 months a yr. and I kept it together 3 yrs. Never had a piston problem. Car ran very low 11 quarters and had a 1.42 60 ft time, beat lots of guys that ran the "good " stuff. I have a tank of it in my car right now as we speak.
It can be run safely - check the link! [URL=http://www.wauknet.com/douthitt/gas.htm] Life is too short to listen to ricers!
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1969 GTO, 5.77 @ 121 1/8th mile 3450 lbs...535 with Junk dinosaur Eheads Faster on nitrous |
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#17
08-11-2003, 09:28 PM
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69goat1 is on par with my experience. I had a 64 lemans with a 66 GTO 389 that had about 11 to 1 comp and wouldnt run on 93 octane without spark knock. I would buy 15 gallons of 93 then add about 5 gallons of avgas to it to bring my tank up to the 20 gallon full mark. Never had ANY problems whatsoever. Hell with avgas my MPG was better. I ran full tanks of avgas 3 or 4 times during the period I had the car and never had any type of hiccup at all. Now if I had left that spark knock unchecked I am sure I wouldnt have been able to say the same.
And for the record this wasnt a weekend 5 mile trip to Walmart car.....I drove the lemans everyday rain or shine to the tune of about 40,000 miles a year
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
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#18
08-11-2003, 11:31 PM
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I think some of you may be shooting from the hip here. Av gas, 100LL is a fine fuel for automotive use as long as your compression is no higher than 11.5:1. Just make sure you jet your carb accordingly. You will definetely need to richen your jetting to assure your not running lean. I do have an FAA A&P mechanics License, and am an FAA Safety Inspector, since you asked. But this has nothing to do with why I say av gas is perfectly safe for automotive use. An aircraft engine is much the same as an automotive engine and the pistons are nothing exotic either. I have used a 50/50 mix of AV gas 100LL and 111/112 octane race gas in my 12:1 car and my ET and MPH is slightly better than straight race gas. I have used straight 100LL with good results without any noticable detonation, but I think 12:1 may need higher octane just to be safe. Even though they call it 100LL it is actually a higher octane than 100 octane automotive gas as they rate it differently. Many aircraft owners use automotive pump gas in their aircraft because it is cheaper and most aircraft engines have lower compression than automotive engines. The use of automotive gas in many aircaft has been approved by the FAA. As long as your jetted correctly your safe. I have a friend that ran av gas in his GTO for may years, over 30,000 street miles and 100's of 12 second and 11 second runs at the drags with cast pistons and never had a problem. I am not sure about his compression but it was too high to run the 92 pump gas, I think around 11:1 or so. Yes av gas is oxygenated but so is pump gas. Any fuel will burn pistons if you run it too lean.
Tim C 65 LeMans, 3500lb. D-ports and a flat tappet cam, 10.92@120
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Tim Corcoran |
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#19
08-12-2003, 04:15 AM
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On top of that, Tin Injun, nitrous is considered a hazardous material in shipping or transport, which is why the bottles are shipped empty.
In summation, its not worth using to save a dollar or two at the track. "I ain't a killa but don't push me....." Tupac |
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#20
08-12-2003, 08:11 AM
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR> On top of that, Tin Injun, nitrous is considered a hazardous material in shipping or transport, which is why the bottles are shipped empty.
<HR></BLOCKQUOTE> It's hazardous due to the high pressure. Same as a SCUBA tank. "I open up three deuces, I'm Never Coming Back!" http://www.tripower455.com |
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