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Discussion Starter · #1 ·
In FEB ATV magizine there is an artical that talks about using a higher octane which will give you smoother power, and better performance. Has anyone had any experience with this?

I do understand, and know all about octane, and performance values, but in some cases when you don't actually need higher octane (i.e. high compression) it wont do you any good unless you tune for it (i.e. advancing the timing)

If this artical is correct going from the standard 87 octane to the mid range of 89 or higher, it will do you good.

Let me know what you all are using. Is it working for you if your not running regular?
 

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ive ran both in my Rubi and it does seem to run better with higher than 87, even though i use 87 as much as i do the others.
 

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I use 93, Simply because that is what my truck takes. And I am too lazy to get out a second nozzle of cheaper gas to put the couple gallons in the the Foreman.
 

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Discussion Starter · #4 ·
TrueGrit : Does 93 make a difference you notice?
 

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i use both but i am boring my motor out tommorrow and i wander if it will make a diff.??? if i use higher like 93
 

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The rule of thumb is to use the lowest octane you can w/o your motor pinging. There is not a noticeable difference that I can tell. But if you realistically look at it. The $$ difference in 93 vs 87 octane in the 3-4 gallons to fill-up the Foreman is less than a dollar. But like I said, I only use it because its what I have to run in my truck, other wise I'd probably stey the the "happy medium" and run 89.
 

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Darren how come your boring out your motor, is it smoking?
 

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hey hondadude what do u think about my boring my motor out then will it make a diff?
 

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Discussion Starter · #9 ·
I can only speak from my race car engine building. Bore has nothing to do with it unless the compression is raised. Years ago we would build street race V8's using a flat top 10.1 piston because you could still run pump gas. If you wanted more you could run a 105 racing fuel and advance your timing which would equal more power. Gas is not the power, the advancing the timing is, but since you advance the timing you needed a higher octane that would not detonate as fast.

Just to explain a bit , 87 octane explodes with a bang so to speak or shoves the piston abrubtly. The higher the octane (93+) the slower the burn or in other words it pushes the piston forcfully but not abrubtly which can produce a smoother better power.

So to answer your question, boring would not require higher octane. A proformance piston of higher compression or advancing the timing or both could or would require a higher octane.

How I did not make that to confusuing
 

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Discussion Starter · #10 ·
QUOTE ("Hondude":1edv0ju3)
I can only speak from my race car engine building. Bore has nothing to do with it unless the compression is raised. Years ago we would build street race V8's using a flat top 10.1 piston because you could still run pump gas. If you wanted more you could run a 105 racing fuel and advance your timing which would equal more power. Gas is not the power, the advancing the timing is, but since you advance the timing you needed a higher octane that would not detonate as fast.

Just to explain a bit , 87 octane explodes with a bang so to speak or shoves the piston abrubtly. The higher the octane (93+) the slower the burn or in other words it pushes the piston forcfully but not abrubtly which can produce a smoother better power.

So to answer your question, boring would not require higher octane. A proformance piston of higher compression or advancing the timing or both could or would require a higher octane.

Hope I did not make that to confusuing
 

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I was running 93 but the last 2 fillups have been 89. The first 89 still had a half tank of 93 so its hard to tell the differance because it was stepped down.

next time I fill up will be back to 93 I think
 

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yea

yea it started to smoke just a little and i got a little water damage so thats y, im replacing the crank too and crank shaft.
 

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oo that stinks, well atleast its gettin fixed an will be as good as new.
 

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yea well with first gear and many more wore out parts in the trans it will cost me about $1000 dollars including the piston and crank. that is retail on parts, im getting all the parts at cost and i save about $400-$500 dollars thank God!!
 

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I run the Amaco/Bp Ultimate in my Foreman, the 91 octane I think. I have been running that in it since the 3rd tank full, started with 89 octane. I think it even gives it a little bit better of an exhaust smell when it is in the garage warming up, (with the garage doors open of course).
 

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I'm still on the full tank the dealer put in, but I plan on running 93 octane.

But I am wondering what about higher? Has anyone ran a higher octane?
 

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I run 93 oct, because thats what i put in my truck. i know on my rancher i had, at WOT it would almost ping with 87, atleast thats what it sounded like. But with 93oct it wouldnt make as much noise. and so ever since i got my foreman i just put in 93oct.
i know on my truck i am gettin around 23.5mpg with 93oct, where as when my mom had it she ran 87oct she would only get 19mpg.. but i did put K&N intake, tuned, and exhaust..
Later Guys!!!
 

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I use 87 octane in ours. I'm just to cheap to spend the extra money on a
few more octane numbers.
 

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Stupid question but I do not know much about fuel/octane ratings and performance. My Foreman gets HORRIBLE gas mileage. By putting in a higher octane (since it burns slower) would my gas mileage increase?
 

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QUOTE ("eurobro":2x9vnvka)
Stupid question but I do not know much about fuel/octane ratings and performance. My Foreman gets HORRIBLE gas mileage. By putting in a higher octane (since it burns slower) would my gas mileage increase?
hey eurobro what kind of gas mileage are u getting? my foreman drinks the crap out of it! i went 25 miles on a full tank and she was getting empty. oh and i use 93 only because thats what my truck takes too, so i jsut fill the gas cans while im at the station.
 
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