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100 Octane???

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Old 11-06-2006, 07:04 AM
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Question 100 Octane???

Would it be safe to run 100 octane in my runner? (S/C 3.4). Or even run 3/4 91 and the rest 100 - 110 octane?

Would that be to unstable to run? Or am i better off just using strictly 91. Because I know those octane booster products are a waste of money and they dont even boost it too much to be a noticable differance.

Thanks,
Stevo3
Old 11-06-2006, 07:08 AM
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try it out
Old 11-06-2006, 07:10 AM
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I am really debating it, I found a single pump out here in Arizona that has 2 hoses to it. 1 Being 100 octane. and the other being 110 octane. I just dont want to put it in my truck and then end up burning up the pistons. Thats why im trying to get some suggestions before i just go out and do it... To be on the safe side that is.
Old 11-06-2006, 07:13 AM
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With your charger, I would think the 100 octane should be fine (as long as it's 100 unleaded). I'd probably stay away from the 110...
Old 11-06-2006, 07:16 AM
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It shouldnt hurt at all. Octane is just a rating of ignition. lower the octane the more prone to ignition it is. Running higher octane than your car can use is pointless, but I would think with your S/C, (and if you have fuel mods) the 100 octane should run fine. Might even help you out a bit...
Old 11-06-2006, 07:16 AM
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With the S/C Higher Octane is needed to decease detonation. The well known fuel system delivery fixes will also help to decease detonation

At $5.50 plus per gallon for 100+ fuel, fuel fixes appear cheaper than regular $90 fill ups
Old 11-06-2006, 07:19 AM
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Well, no fuel mods yet. Im just trying to play around with it a lil bit. to see if it reduces some of the pinging until i do get all the fuel mods.

So this will be some trial and error. I didnt see any other posts about people with S/C's trying to use any higher octane rather than 93 the highest. Which we dont get that here in Arizona, the highest is 91. Im going to stop by that shop and talk to them a bit about it. Im just getting some info from the rest of you all to see what you think first before they tell me otherwise.
Old 11-06-2006, 07:21 AM
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Originally Posted by metalhed
With the S/C Higher Octane is needed to decease detonation. The well known fuel system delivery fixes will also help to decease detonation

At $5.50 plus per gallon for 100+ fuel, fuel fixes appear cheaper than regular $90 fill ups
Agreed, But i dont plan on filling it completely with that stuff. with the 100 octane i would do like 1/2 91 & 1/2 100. If i thought about using the 110 it would be more like 3/4 91 : 1/4 110.
Old 11-06-2006, 07:28 AM
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It should reduce pinging....
Old 11-06-2006, 07:56 AM
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It should be fine as long as that isn't aviation fuel.
Old 11-06-2006, 07:57 AM
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Run the 100 it should help.

you also need to show us some pics on this thread.
https://www.yotatech.com/forums/f5/going-dunes-today-98057/
Old 11-06-2006, 08:02 AM
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Well, Theres kinda a problem with the pics. I didnt take any of my truck or golfcart . wish i had. All i really took was pictures at the sand drags. and a Couple at Oldsmobile hill. otherwise i was spending the majority of the time riding. I only got on of my truck w/ with everything loaded up. I will post some of the best pics anyways. Mostly rails and Yotas. I got one of an F-650 too. Freakin sweet.
Old 11-06-2006, 08:13 AM
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Originally Posted by Stevo3
Well, Theres kinda a problem with the pics. I didnt take any of my truck or golfcart . wish i had. All i really took was pictures at the sand drags. and a Couple at Oldsmobile hill. otherwise i was spending the majority of the time riding. I only got on of my truck w/ with everything loaded up. I will post some of the best pics anyways. Mostly rails and Yotas. I got one of an F-650 too. Freakin sweet.
Old 11-06-2006, 08:20 AM
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Originally Posted by X2and4X
Hahaha, i know i deserve that. But i was having too much fun out there to think about pics.
Old 11-06-2006, 08:23 AM
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Originally Posted by Stevo3
Hahaha, i know i deserve that. But i was having too much fun out there to think about pics.
yeah, I know how that goes. Its also really hard to drive and take pics of your own truck.
Old 11-06-2006, 10:31 AM
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A 96 4Runner that's supercharged in Phoenix? C'mon people, let's get real!

100 sounds like a good idea, especially since you are running that thing with no fuel/timing mods! Hey, do you at least have the Free FMU mod? Please tell me you do!
Old 11-06-2006, 10:52 AM
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Originally Posted by <96 Runner>
A 96 4Runner that's supercharged in Phoenix? C'mon people, let's get real!

100 sounds like a good idea, especially since you are running that thing with no fuel/timing mods! Hey, do you at least have the Free FMU mod? Please tell me you do!
Thats what I am saying, run the 100, heck the 110 cant hurt, as long as its unleaded and not aviation fuel or something.
and forget half anf half 100 and 91, just run the 100.

AND GET FUEL MODS. lol. before you blow something up.
Old 11-06-2006, 11:02 AM
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The lowest octane you can run that doesn't detonate is the best fuel to run. Higher octane gas has a lower energy density then low octane so you're fuel economy will suffer if you run higher octane then you need. My advice would be to fill your tank with increasing proportions of 100/91 mix until you stop getting detonation then increase the proportion slightly to account for harder driving and hotter days. Using "too high" an octane will never hurt your vehicle, it will just hurt your wallet.

Then forget all of that and fix your fuel delivery problem, maybe even stick on an intercooler too.

Last edited by santacruzrc; 11-06-2006 at 11:12 AM.
Old 11-06-2006, 04:31 PM
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we get alot of the tuner kids at the track and they fill up with the 115 stuff and wonder why they dont run faster.

higher octane in a normal vehicle does little to nothing
Sunoco fuels has a chart that tells you what the octane ratings are and what minimums you need to use a certian fuel.

most 114, 115 octanes are for 13 to 1 and over motors

we have 100 available at a local station here at $5.59 a gallon
twenty bucks only gets you a few gallons
true race fuels are available at the track and a VERY pricey 6-9 bucks a gallon
Old 11-06-2006, 10:09 PM
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acetone

Last edited by SLC97SR5; 01-20-2009 at 01:03 PM.


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