Av gas

[Shadylane]

My brother has an aircraft restoration business. He uses 110LL in every thing that requires high octane gas, his hot rods, boats, golf cart, off road stuff. In 5 gallons he mixes 1/2 cup Lucas fuel injection cleaner/conditioner and 1 cup toluene. I’ve used this formula for years in my street Fairlane as Weber IDF carbs won’t tolerate ethanol. Lasts a long time in the car, no side effects.
I buy it at a local Airport that has a self serve pump.

Kelly

[larrylomascolo]

Thank you all,for input ,gona try it,

[Bob Mulry]

A long time ago, while on active duty, we all ran 115/145 Purple AV Gas in everything we drove. The price was right. It was the best smelling fuel that I have ever used. Up on the wing filling tanks, that fuel was so volatile it cast a shadow across the wing...

R-3350 Twin Row Radial Engines - 3350CI = 3850HP

[Adger Smith]

Does any one want to tell what the dual rating on AV gas is about? like 115/145 ??
Choices:
A. Heat value
B. Resistance to engine icing
C. Octane
D. Volatility rating

[Jeff Stout]

Originally Posted by Adger Smith

Does any one want to tell what the dual rating on AV gas is about? like 115/145 ??
Choices:
A. Heat value
B. Resistance to engine icing
C. Octane
D. Volatility rating

The Lean Mixture rating is 100 octane (15 octane higher than the comparable 85 MON for unleaded Mogas) but Avgas also has a Rich Mixture rating of 130 which allows higher supercharger boost pressures to be used without detonation occurring.

I thought the high number was heat value, but I cheated and went to google

[Shake & Bake]

When I use to do a lot of street racing back in the day I would buy AV gas from the local airport.(Told them I was using it at the dragstrip). They told me it was 105 octane. I would then mix Super 104 +" Real Lead" with it to up the power a little more.
Adding one quart of "Real Lead" additive in 20 gallons of AV gas would take it up another 5-7 numbers.
Seriously, 1 gram of metallic lead per gallon of gas equals a level of protection no substitute can match....Not to mention it stops knocks, pings, run-on, overheating and piston damage caused by fuel that's too low in octane.

[Bob Mulry]

115/145 was 115 octane lean & 145 Auto Rich or Military Power...

We also had a a J-34 jet engine under each wing that used 115/145 for fuel and part of our pre-flight was to reach inside the tailpipe to break of the stalactites of lead from the fuel.

Flew in P-2V Neptunes .......2 turning & 2 burning

[John Kissel]

Wow, weren't you lucky to get to use that stuff.I got to use 100LL for years,in Florida but if you try to by it where i now am, you get treated like a crimminal.Now, I love all of the stuff I buy from VP. but I will notice little bits of trash in the screen of the funnels I use, the funnels are the ones alcohol guys use with a very fine mesh screen in it. One is for my car, and the other for my small engines. This is with 110 or SEF. Just wonderin'. John Kissel K242

[Dan Fahey]

Originally Posted by Bob Mulry

A long time ago, while on active duty, we all ran 115/145 Purple AV Gas in everything we drove. The price was right. It was the best smelling fuel that I have ever used. Up on the wing filling tanks, that fuel was so volatile it cast a shadow across the wing...

R-3350 Twin Row Radial Engines - 3350CI = 3850HP

Was that version the compound turbo charged engine..?
I know they were put on Connies that made 3350hp...

[Bob Mulry]

Originally Posted by Dan Fahey

Was that version the compound turbo charged engine..?
I know they were put on Connies that made 3350hp...

They had 3 PRT's Power Recovery Turbines each rated 150HP that fed the power directly back into the crankshaft using a reduction gear setup.

They grouped 6 of the 18 cylinders together so the exhaust of 6 cylinders powered each of the 3 PRT's.

We even had an R-3350 with a Chevrolet Bow-Tie build plate.

Back then my rating was AD(R) 2 with the R standing for Recips.

Punched a lot of holes in a lot of clouds.