AV - Gas?

[Capt.Insane-o]

None of that bullsh*t in a can works other than aces

I ran and still occasionally run av gas. Never had any issue with it what so ever. Back when it was fun 1000 gallons a summer wasn't out of the norm.

[FMP]

Purple's been proven, dyno tuned? Toluene, absolutely. If you have a modern higher compression or forced induction engine, get it empty, fuel it with your normal fuel add the can. It will tune for it.

[Capt.Insane-o]

Right

Toluene is a base product in high octane fuels. No way I'm trusting my motors to vatozone gogo juice.
Like I tell customers you build your motor to the fuel you have readily accessible.

[FMP]

https://www.sunocoracefuels.com/tech...w-octane-fuels

[FMP]

Can of purple on top of AV helps even more with less required for excellent cylinder lub and octane, except for the density which some have issue with.

[FMP]

http://www.motoiq.com/MagazineArticl...e-Booster.aspx

So if you are going to be hard on the motor, lots of heavy load, skiing etc and you want extra protection use a can to 18gallons.

[Capt.Insane-o]

jesus.. did RP send you a box full of purple man thongs with your paycheck this week?

[FMP]

They should, send us all a few cans that is. I can easily only get 91 no alc, the 100ll is a round trip, the 94 with alc a bring it only. The can is super convenient

[Motv18]

I just head to the dirt track.

Octane booster points are like mortgage points. 87 + 30 point booster = 87.30 octane

I know a few gasheads that buy 87e10 -phase separate- blend with toluene xylene ect- to make their own gas.

100ll is supposed to be 100 (r+m/2) equal to iso-octane (100+100/2) or pure chemical octane.

Gas is a fun debate. The basics as I learned

min octane rating gives reliable starts, complete burn, ect ect

good octane rating gives solid clean performance, less ping and knock in high stress, ect ect

to high octane rating, incomplete burn (carbon buildup smoking), lower power from less burned fuel,

That all depends on true cylinder temp dynamic compression yadda yadda.

[FMP]

All true, except the 3 full numbers from RP, MMT

[H2OPERF]

I have heard all the ins and outs of avgas,yes its not really race gas, but you know 100% what your getting when you buy it... I have ran it in all my stuff never had any issues at all..leave a can of pump gas for a year smells like shizit ,i have drained avgas fron aircraft that have been sitting for 2 years still looks n smells good, im'sure its not 100%but doesn't look like varnish though..Dave

[Mark75H]

100LL is not 100+100/2 nor pure octane Aviation gas is rated on a completely different scale with a completely different set up process

If it were pure octane, it would be 100+100/2, that is correct. "LL" means it has lead (actually "low lead")- if it were pure iso octane and had lead, the octane number would be higher than 100, since 100 means the performance equivalent of pure unleaded iso octane.


There is no direct correlation with octane rating and incomplete burn

[H2OPERF]

Still way better than pump gas to help keep from a burn down. https://www.shell.com/business-custo...-30071515.html

[rude tim]

Av gas is blended to resist detonation and run better at altitude. It produces less horsepower per pound of fuel than premium automotive gas. If you have high compression in your engine it will resist detnation better than 91 pump gas. If you use the proper octane for your engine build it will out perform Av gas.