130 octane avgas

[rooster71]

Will this hurt the motor. i run it in my lawn mover without a prob.was just trying to your thoughts.

 

[SilverBlue]

Wow how big is this lawn mover?

Is avgas legal to use in your state for purposes other than aircraft? I doubt that you see any benefit from using it and don’t think any harm will be done to the engine.

 

[Jacob J.]

Judging from previous posts on this topic anything over 94-5 octane isn't going to buy you better performance in a stock engine. Like Silverblue pointed out, it may even hurt it. I read somewhere that higher octane gas ignites at a higher temperature but scavenges cleaner, therefore running a modified engine cooler?

 

[tony marks]

bud, hate to say it but u saw mite have to be the guiny pig on this one. i ran 93 in everything ,with my mechanic hollering ,,,u gonna burn that motor up.. still do in my saws . but ive about decided higher octane is job specific with my equipment. if im pulling a heavy ld with my truck ,,,it definitly helps on hills etc. .
as to 130 octane ,,like i say ?????
let us know what the outcome is ,,and your evaluation. and good luck

 

[NevadaWalrus]

Are there more then on type of 130 av-gas?? I have seen mower engines in the shop that were run on 130 and the plugs were white hot. Inditcates to me they were running very hot.

I know with automotive gas that premium actually has lower BTU's and runs a bit cooler but I think some av-gas must have some other protperties beside octane which at least in some cases causes the engine to run hotter.

 

[JohnL]

Hello, been lurking for a while... Another pathetic (old)Homelite fan lol


High octane burns slower, more stable, the benefit in cars is it will let you run more ignition advance before it starts detonating. It's not an issue on low compression motors. Don't see the benefit on stock small engines, sometimes they use more alcohol to raise the octane, and the other additives make the plugs read funny. It contains no more energy than low octane, maybe less like said above, just allows you to run more ignition lead and higher compression without problems. Running it in small motors is assinine, unless you run a hot set-up and understand the differences in how the stuff burns.

 

[Stumper]

I think that the method of determiing octane is different for av gas compared to pumpgas for autos (where 2 methods are used /averaged) . In any case whether 130 octane is 37points over service station premium or 8 points over it I can see no benefit to using it in a stock engine.

 

[johnb]

I wouldn't run it any anything your not afraid of damaging. Just in case. You bring up a debate that has been posted before fuel and octaine that is. I don't remember folks testing octained fuel quite that high but in modified engines it may give you an advantage. I wonder what folks do in country's that have alcohol based fuel's only. I heard that Brazil runs alcohol fuel in all automobiles. How would this effect a chainsaw engine??? The Hoosier



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