110 Octane Racing Fuel

Anybody ever tried using 110 oval track racing gasoline? What’s the highest octane fuel you have ever used? Will our Expy’s run ok on non-ethanol fuel, for the 3.5TT engine?

Like any motor it will run far better with no ethanol.
Without a tune for 110 you are just wasting money.
93 will give you a noticeable difference over 87 with the factory tuning.

Ethanol and it’s government subsidies are one of the worst things that has happened to the automotive industry. Along with other emissions controls.
Complete and utter crap in daily driven vehicles and absolute destroyers of small engines.
Fortunately I have an Ethanol free 90 octane station not too far away. I run it in all my small engines.
Wish it was a bit cheaper or I’d run it in the Expedition.

Ethanol arguable has a place in high performance specially built applications but no place in most of our motors.

I'm not so sure these trucks would run at all on 110 octane. With out a high compression motor, it wouldn't be enough to ignite the fuel. Can probably get away with 100 octane but 110 requires like 12:1 compression or higher, as far as I know.

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I think it would still run and probably run fine but it would be a waste of money and octane.
You only need enough to prevent detonation and maybe a point or two extra but any more you are wasting and more than likely lowering power output....all ecm management being equal.

110 octane is nothing more than a measure of Knock Resistance....NOTHING MORE!

It doesn't require higher compression or higher temps and other bs. It will be overkill(b/c your engine can't adjust for that high octane) for your engine but will not harm it. It may however harm your wallet as it's is very expensive.

I typically run similar fuels in these......cause these Two Strokes were engineered to the fuel we had in the early 70's....100-105 Octane.

jeff

I was reading about Dodge's newest high horsepower animal, their 840 horsepower Dodge Demon. To get to that number, it was tuned for I believe 100 plus octane. That motor might even be able to eek out another 40-60 horse's with 105 or higher, and an even more radical tune. Just in case 840's not enough for the craziest of you horsepower junkies out there!

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Wow, didn’t know when I first posted this thread it would garner so much attention. I was pumping gas a couple weeks ago at Shell and noticed they still had their racing pump going from back when we were racing late models at our local track here. Had to post something after seeing that pump was still in service. Was five bucks a gallon six years ago.....thanks to our members for your attention to this thread....like DW says, “let’s go racing boys”.

jeff kushner said:

110 octane is nothing more than a measure of Knock Resistance....NOTHING MORE!

It doesn't require higher compression or higher temps and other bs. It will be overkill(b/c your engine can't adjust for that high octane) for your engine but will not harm it. It may however harm your wallet as it's is very expensive.

I typically run similar fuels in these......cause these Two Strokes were engineered to the fuel we had in the early 70's....100-105 Octane.

jeff

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That's a heck of a line up of motorcycles. Love it. I don't have the time to ride more than the 1 I have and it had to be in storage for the winter.

Jeff, I recognize the front three bikes, but what's the two in the rear? One looks like a modern dual purpose, can't tell what they are. Are they Kawasaki's as well?

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jeff kushner said:

110 octane is nothing more than a measure of Knock Resistance....NOTHING MORE!

It doesn't require higher compression or higher temps and other bs. It will be overkill(b/c your engine can't adjust for that high octane) for your engine but will not harm it. It may however harm your wallet as it's is very expensive.

I typically run similar fuels in these......cause these Two Strokes were engineered to the fuel we had in the early 70's....100-105 Octane.

jeff

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I was wondering about that. Why won't it adjust for 110, or any, octane? I thought the mechanism was a knock sensor to detect knocking from too much advance, then backing off the timing until it quit knocking. higher octane gas allows the engine to advance the timing more, correct?