Can you run airplane fuel in a rotary insteed of race gas. I have a buddy that flys planes he said at the airport they are only paying 2.60 for low-lead 100 octane prop fuel. Hell thats only 40 more cents a gallon and i can tune to run 100 octane all the time !!!! can this be done?

Sure can! Crank up the boost too!

not good for n/a's i take it?

**** i'm deff turning up the boost! if this turns out to be true this is goin to be very very cool. Hell turbo blue race gas costs over 5.15 a gallon, screw that go to the airport!!!! He said something about other grades of gas like Jet A any one know the octane ratings and info on this stuff?

if ever you come to jersey, i'd like about 20gallons please

It works just fine. Ive been known to run it occasionally. BUT, its going to severely shorten the life of your O2 sensor and cat if you have one.

the gas I fill up on, would be gone by the time I get back home from the airport...basically, it's a long drive and still with no 5th gear on the highway...think about it fellaz

I work at an airfield https://www.nopistons.com/forums/pub...#>/biggrin.png

You need a good hookup. I used to work at an Airfield too in 1983 and back then 105 Unleaded Av-Fuel was $2.25 a gallon. Hmmmm... So in 20 years Av-Fuel has only gone up $0.15. Makes you wonder.



Same with Can-Am its price never changes but the regular pump gas does.

Umm this might sound pretty dumb but ... Where do you get "race" gas? LOL



(just curious)

at the race track, i guess some pro shops carry it also. i think theres a gas station in paterson that has some, at the pump i believe.

I buy 100 OCtane at the pump of the local circkle K

WHOA, DO NOT PUT JET A in your tank, it's ******* kerosene you might as well set the ******* engine on fire and walk away. Jet A fuel and Diesel are very similar, we used to run the Jet A in the diesel trucks, but it emits some high levels of pollution so the EPA got pissed. Also if you wanna talk about low octane, Jet A octane level is something like 30 LOL, like I said, it's Kerosene.



As far as LL goes, I'd be careful, I know a lot of guys who used to run it in older cars, newer cars with higher temps seem to have issues with the low lead, something with lead deposits on the valves, now I dunno what it would to do a rotary. Get unleaded, yes av gas has been stable and cheaper and guess what.... it's better gas! It's more pure and has to meet more strict guidelines. BTW, 100 octane LL still has more lead then the leaded gas we used to pump into our cars at the gas station.

meh=cofused by the rantings of the dorsalfin

Cliff notes:



Jet A = Kerosene = Diesel = non-running rx-7

In fact you probably couldn't even get your car to ignite Jet A.



100 LL = It's your choice, I wouldn't run LL as I wouldn't want to risk potential lead deposits tons of people do and short term have no issues, I don't know anyone who has been running LL in a newer car for a long time, I was just told when I was in A&P school that the higher heat modern engines collect lead deposits around the valves when they use LL

LOL I guess that makes sense https://www.nopistons.com/forums/pub...1047683664.gif



Me = Dumb LOL

A quick internet search indicates that both O2 sensor and catylitic converter are quickly hosed when running low lead, I also found some mention of lead deposits in the combustion area (might mean valves?)



In the 60's when they were running leaded auto in all the cars they weren't running the internal temps that we do now. When you add in the emissions crap and consider that we're now getting similar hp's in half the engine which ='s increased temps I don't think I'd risk it https://www.nopistons.com/forums/pub...DIR#>/wink.png

Oh and just for you banzai...



Jet A in Diesel = https://www.nopistons.com/forums/pub...IR#>/bigok.gif LOL



Like I said before we used to drain it out of the planes when they came in and use it in out tugs and ground equip, the EPA came in one day and ripped us a new one, they made us stop doing that and got pissed about a few other things LOL

I misseed the question about Jet A. Ok confusion has passed





BTW: The new Diesel recipe:



5 Gal Vegetable oil

2 gallon Diesel

2 gall gas

Using leaded ACFT fuel is a bad idea, you can do it but its a bad idea...the stuff is 120+preformance gas (purple in color) your car can not burn it all and you will make less power. Jet A in just diesel (kerosene with additives, well both have additives thats what seperates diesel from jet fuel. specific gravity is very close on both)

Running leaded fuel 100oct. is ok BUT, only once in a while (2 times a month at track, and not all leaded fuel) if you continue to use leaded fuel and you will have to change your fuel filter change cats (if you have them) clean out combustion area of engine (lead deposits) if used long enough you will need to change you fuel lines and flush your fuel tank.

Like I said before...the ACFT fuel is used for high compression acft engines many of which are also turbo or supercharged making much more power than cars. I could get AVGAS very easly but that stuff is best left for ACFT.

unless your doing 9's and lower you really don't need anything more than 100oct. fuel. (which is the highest octaine rating) If any are wondering why I might know this its becaues my job for the army is POL/fuel section.

Theres a broad range of leaded aircraft fuel. The purple warbird juice your talking about is hard to find. 100LL and 110LL are much more common. And general aviation aircraft dont run it for crazy high compression ratios and boost. The vast majority of general aviation piston engines have a CR around 7-8:1.

very true mazdaspeed...but still the overall point is leaded fuel is not a good idea.

I guess me and Turbo Mark need to use it less. We get the General av gas for Cessna and Comanche plane. What's that a high compression 350?

it would be useful if we new how much of that to put with the 94 octane per gal.

for track use rather than a full tank.

Its got either a lycoming or a continental, and the compression ratio is quite low compared to what we see in cars. 7-8:1 is the norm.