jvallo7

can u use avation fuel in a rotary? if so can i see any power from it?

hondahater

iTrader: (2)

remember the higher the octane doesn't mean the more hp it's going to give you but the less prone to detonation you will be. If you are running n/a there is really nothing better than 87. If you are running a crazy turbo setup than a higher octane rated fuel would be ideal.

jvallo7

cool thax for some odd reson i thought it might have nitromethane in it

88turbotime

And keep in mind that 100LL (Aviation fuel) has Lead in it.

poor_red_neck

Will lead damage the seals? I thought the bad no no for lead was the valves in a boinker and the 02 sensor? (don't remember where I got the 02 sensor tidbit, just that it came up in a conversation once)


But to confirm the answer above... if you have a n/a you'd be wasing your money. The octane number relates to the flash point of the fuel. Higher compression n/a and forced induction cars use high octane fuel (93, 97) because the flash point of the fuel is higher.

Example.... diesel has an octane rating of around 45-48 I think. Diesles have a compression ratio of what... 16-19:1? Diesels do not have spark plugs. They rely on the low flash point of the fuel and temperatures created by compressing the air/fuel mix to ignite the fuel. Glow plugs are only used when the vehicle is cold to warm the cylinder tempreature.

When you start getting into your 100, 110 octane fuels, this is because you're running crazy boost like 30+psi, or huge shots of nitrous.

Just a little bit of extra info for ya...

All those products you see at advance auto... yeah those don't raise octane. Read the bottle very carefully. One bottle treats about 15 gallons of gas. It raises the octane level by "10 points." 10 points relates to a .1 octane rating so you just went from 87 to 87.1
-pleae correct me if I'm wrong... this is what the bottle states. I'm pretty sure its .1 of an octane rating

88turbotime

I dont know if lead will damage the seals or not, but it would probably do a number on your spark plugs. I know when I do a 100 hour inspection on a plane its a real bitch to get all the lead deposits out of the plugs, and those plugs are DESIGNED to run on leaded fuel.

bean13

iTrader: (1)

It will kill your cat for sure. I would imagine the O2 sensor wouldnt like it to much either. In older engines, lead is good because it acts as a conditioning agent for the valve seats that were not harded at the time. Also, trust me, I am a pilot, breathing any leaded gasoline sucks, I have to huff that **** all day long and it so so damn drying it sucks the air right out of you. that and it isnt cheap, around here its about 5-6 bucks a gallon.

88turbotime

Haha damn, i saw some for 3.09 around here, but thats unusually cheap its usually around 3.60 to 4ish.

bean13

iTrader: (1)

yeah, its a private airport with one pump. They dont really want to sell it, but they have me by the nutz...why I am not going to fly much more for personal fun after I get done with my ratings. our regular street gas is like $2.50

88turbotime

what ratings do you have?
I just have the private for now, ill dont know if im going to go for instrument this summer or just wait and let the Air Force train me to fly the REAL toys

slo

iTrader: (1)

what aircraft are you flying?

Is the engine certified to run on auto gas?

I am about 35 hrs into my private pilot rating. I don't fly much (twice per month avg) , I would just like to finish by 60 Hrs.

RotaryEvolution

iTrader: (30)

anything above pump gas is pretty much a requirement when pushing even over 17psi.

bean13

iTrader: (1)

I have a private, complex, taildragger, and working on my commerical twin engine. thinking about hangin it up to further my racing, cant afford to do both. I have only flown stuff that runs on avgas. Was in AFROTC but they dont let blind fellas fly fighters so I got out. That and with how **** is now there is no way i could see myself as happy having someone to tell me to do things over in Iraq that just arnt right. i got a lot of freidns over there and they are saying i got smart.

as for the fella working on his private. bump up those sessions, three a week or even two a week will benifit tenfold. you forget a ton between lessons, especially after that long. I ment our street gas for cars isnt cheap either, so thats some of it, that and our avgas has like 4 different middle man- bitches

rock out fellas

88turbotime

Mostly just a Cessna 172 and 150, and occasionally a beechcraft. While i believe technically both Cessnas could run on regualr gasoline, I would never do that.

Evil Aviator

Yes
http://www.mistral-engines.com/
http://www.americanrotaryengine.com/id5.html
http://www.rotaryengines.ca/main/aircraft.htm

Not unless your engine is capable of operating with a LOT of turbo boost.

The last I heard on the subject, the fine for using AVGAS in a street car in the US is $25,000 per day for both the user and the seller.

No, it's usually mostly naptha with some toluene, benzene, xylene, ethyl benzene, trimethyl benzene, cyclohexane, n-hexane and/or other fancy-sounding hydrocarbons, along with additives of tetraethlyl lead (TEL), ethylene dibromide (EDB), and blue dye. The blue dye is what adds all the octane j/k

Octane ratings have nothing to do with the flash point. If you just keep in mind that the octane rating is purely an anti-knock rating, and absolutely nothing else, then you will be good.
http://www.fandl.com/fuel_facts.htm

One point = 0.1 octane rating. Therefore, with a 10 point gain, 87 PON would equal 88 PON. In most cases this works out to about twice the cost to turn 87 PON into 89 PON vs. just buying the 89 PON in the first place. Using an overly-high concentration of octane booster can damage your fuel system and may slow engine acceleration. Also, the octane booster may not mix thoroughly in the fuel tank, which could lead to a blown engine if some untreated or under-treated fuel makes its way to the fuel injectors.

I rented some Cessnas at an FBO that used MOGAS, and I didn't notice any problems with the fleet.

88turbotime

Thanks for all the good info, Evil Aviator.


Yes, but if I did that my 60-something year old flight instructor would kick my ***, and that would be embarrassing.

Evil Aviator

Good, because the airplane requires an STC to use MOGAS, and there are sometimes maintenance issues to be resolved (resetting the carb float, ignition timing, etc., depending on the engine) prior to filling it up with MOGAS. Therefore, your flight instructor SHOULD kick your *** if you put MOGAS in the plane.

arghx

iTrader: (3)

leaded 100 octane would be a great idea if you have a turbo II with a turbo upgrade--and if you have one, it's likely you don't have a cat anyway.

And O2 sensors are not expensive, while blown motors are...