100ll

blaster82

New Member
Jan 27, 2008
401
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hanover PA
I work at an airport as an airplane mech. I can get avgas which is 100 octane but its low lead. would the lead in it hurt anything in the blaster? I just dont wanna try it and it gum up my reeds or something stupid and costly.
 
I haven't experience with it, However alot of high compression guys have ran it with no adverse affects- someone said the lead lubricates?
 
There is more to it than just octane.
Avgas is made and tailored for big bore slow reving engine. 4-5" bore and 3500rpm.
It is made to be slow burning, among other things. Not a lot of help for you.

The lead was part of a compound to increase the octane rating and helped to lubricate the valve faces.
It also destroys catalytic convertors. These last two factors have no effect on a 2 stroke Blaster engine.

Steve
 
From what my ol'man told me years ago, leaded gas was used to lubricate the the engine and valves. He could be wrong but told me its safe to run in anything that doesn't have a catalytic converter as the lead will plug it up. Not sure how much more power you'd make unless you had the compression requirements for running aviation fuel.
 
There is NO advantage in running higher octane fuel than is required to keep the engine from detonating. In fact, the higher octane fuels are "lighter" blends of petrochemicals which actually have shorter hydrocarbon chains. The net results is actually a decrease in energy by volume meaning less power per gallon.

The advantage of "race" or "av" gasoline is that it resists detonation more than "pump" gasoline which means you can push it harder, compress it more, and advance the timing more than you can a pump gas engine.

I still wouldn't recommend 100LL being run. Tetraethyl lead is a direct output source for Pb (elemental lead) while it's being burnt and while it doesn't look, smell, or taste bad, lead is a neurotoxin. "Heeby Jeeby bad stuff" as we call it.
 
I still think im gonna try it to see if there is a difference. ill only mix up like a gallon or 2 but ill let ya'll know how it runs. from what ya'll are telling me i wont tell a difference but since nobody said it will hurt any components, ill give her a go.
 
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it is indeed great fuel. ive been running it in my trail blaster for almost 3 years now, never had a problem and it burns clean.

one thing make sure you go up 1 or 2 main jet sizes because av gas is an oxygenated fuel. you will notice a snappier throttle response right away
 
I still think im gonna try it to see if there is a difference. ill only mix up like a gallon or 2 but ill let ya'll know how it runs. from what ya'll are telling me i wont tell a difference but since nobody said it will hurt any components, ill give her a go.

JUST from mixing some avgas into some pump gas, you won't notice a major difference....

What you would notice would be if you had the engine built to utilize higher octane gasoline.
 
best, i will post my findings for sure.
little3mil, im glad to hear that. being in maintenance we end up draining a lot of fuel and throwing it away so ill be taking a lot home for free! and thanks for the tip of going up a jet or 2 cause i wouldnt have thought of that.
 
yessir, FREE!!!! thats why i wanted to make sure that it wouldnt screw anything up before I started using it. unfortunately im getting ready to tear it down over winter to do some minor port work and some other little things but ill try to run some in it before I do that to see if I can tell a difference.