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HOT..110 Octane!

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Old Jan 11, 2012 | 05:19 PM
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Default HOT..110 Octane!

Seen this at the pump today, 110 octaneracing gasoline! That's some Hot-Stuff!!!
Pretty Cool...but I'm not sure you could run it in a stock Lt1...


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Old Jan 11, 2012 | 05:27 PM
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Nope you can't. It has lead in it and it will ruin your cats.
Sunoco makes a 100 octane unleaded race fuel that some of the stations sell.
It won't help power unless you're tuned for it.

Greg
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Old Jan 11, 2012 | 05:34 PM
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Thats pretty sweeett lol

how much was it?
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Old Jan 11, 2012 | 05:48 PM
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Originally Posted by betelgeuse
Nope you can't. It has lead in it and it will ruin your cats.
Sunoco makes a 100 octane unleaded race fuel that some of the stations sell.
It won't help power unless you're tuned for it.

Greg
no good at all unless you have a diff tune you can put in it, but put your race tune in hp and just go back to other.
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Old Jan 11, 2012 | 05:48 PM
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Race gas does not run hotter!!! octane is the resistance to burn, higher the number the hotter the flash point.
Puting race gas in your stock long block will do NOTHING.
Im sure a few will post how they felt the power BUT its all a plasibo effect my friends dont waste your money
Race gas is for high compression engines built for racing

Steve

Last edited by machz800ps; Jan 11, 2012 at 08:54 PM.
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Old Jan 11, 2012 | 05:51 PM
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Originally Posted by tsbbzm
Seen this at the pump today, 110 octaneracing gasoline! That's some Hot-Stuff!!!
Pretty Cool...but I'm not sure you could run it in a stock Lt1...


one station has it here but will not let you pump it into your car. have to put it in a 10 gallon gas tank, then into the car away from the station....
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Old Jan 11, 2012 | 05:56 PM
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Is it just the tune that takes care of this use? or pumps and stuff have to be changed too?

I plan on getting a dual flash pcm, with maybe and auxillary tank with 5 gal. of race fuel
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Old Jan 11, 2012 | 06:16 PM
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Originally Posted by machz800ps
Race gas does not run hotter!!! octane is the resistance to burn higher the number the hotter the flash point.
Puting race gas in your stock long block will do NOTHING.
Im sure a few will post how they felt the power BUT its all a plasibo effect my friends dont waste your money
Race gas is for high compression engines built for racing

Steve
Absolutely correct.

It's a common misconception that octane adds power. It does not.

It allows higher compression, different timing, different cam profiles, etc. which result in higher cylinder pressures. That, and more fuel results in more HP.
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Old Jan 11, 2012 | 06:28 PM
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Originally Posted by tsbbzm
Seen this at the pump today, 110 octaneracing gasoline! That's some Hot-Stuff!!!
Pretty Cool...but I'm not sure you could run it in a stock Lt1...


I run this in my '70....cost an ARM and a leg but the car loves it. I'm at 11:1 so it handles it quite well. I used to run 100 LL aviation fuel until I found the racing gas.
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Old Jan 11, 2012 | 06:28 PM
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Originally Posted by machz800ps
Race gas does not run hotter!!! octane is the resistance to burn higher the number the hotter the flash point.
Puting race gas in your stock long block will do NOTHING.
Im sure a few will post how they felt the power BUT its all a plasibo effect my friends dont waste your money
Race gas is for high compression engines built for racing

Steve
Very true.... if your timing is not adjusted for higher octane then its a waste of money. Higher octane fuel allows you to run more timing because it has "less" of a tendency to pre-detonate.

In a perfect world your spark plug would ignite at the exact same time your piston starts its down stroke. You would make the most power that way.

With lower octane fuel they set the timing so that the piston is already well into its down stroke before firing.

If you set your timing too high with a lower octane fuel you run the risk of the fuel detonating before your piston reaches top dead center (still on the upstroke). That's not good. ... You get engine knock, and could damage your engine for sure. Normally your knock sensor will detect this and pull timing from your engine.

Leaded fuel will kill your cats as said above too.

Toque

Toque
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Old Jan 11, 2012 | 06:52 PM
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Originally Posted by Toque
Very true.... if your timing is not adjusted for higher octane then its a waste of money. Higher octane fuel allows you to run more timing because it has "less" of a tendency to pre-detonate.

In a perfect world your spark plug would ignite at the exact same time your piston starts its down stroke. You would make the most power that way.

With lower octane fuel they set the timing so that the piston is already well into its down stroke before firing.

If you set your timing too high with a lower octane fuel you run the risk of the fuel detonating before your piston reaches top dead center (still on the upstroke). That's not good. ... You get engine knock, and could damage your engine for sure. Normally your knock sensor will detect this and pull timing from your engine.

Leaded fuel will kill your cats as said above too.

Toque

Toque
You could get more power if your engine was pulling timing with just premium.
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Old Jan 11, 2012 | 08:40 PM
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Originally Posted by Toque

In a perfect world your spark plug would ignite at the exact same time your piston starts its down stroke. You would make the most power that way.

With lower octane fuel they set the timing so that the piston is already well into its down stroke before firing.



Toque

Toque
Totally wrong. In every gas engine I know the spark is before top dead center. Higher octane allows you to adjust it even further before the piston hit TDC . Building more pressure and more power.

Greg
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Old Jan 11, 2012 | 08:54 PM
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Originally Posted by betelgeuse
Totally wrong. In every gas engine I know the spark is before top dead center. Higher octane allows you to adjust it even further before the piston hit TDC . Building more pressure and more power.

Greg
I stand corrected... thanks for the heads up. I always thought it was based off top dead center. Cool to know thanks !

Toque
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Old Jan 11, 2012 | 09:04 PM
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Originally Posted by betelgeuse
Totally wrong. In every gas engine I know the spark is before top dead center. Higher octane allows you to adjust it even further before the piston hit TDC . Building more pressure and more power.

Greg
Toque,s explanation is correct. But you are correct that a cylinder is fired just before TDC
Steve
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Old Jan 11, 2012 | 11:27 PM
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Originally Posted by machz800ps
Toque,s explanation is correct. But you are correct that a cylinder is fired just before TDC
Steve
Yep,us old timers remember looking up all the "tune up specs" when we had to throw in point and plugs around every 10-15 thousand miles to keep it running good!! All the specs would include timing numbers ao X amount of degrees BTDC,,Before Top Dead Center !! For that gas,,ideally you'd be running 11.5-12.5 compression and no cats. As stated higher octane resists going off early in higher compression motors and is a waste in regular fuel motors burning some of it's energy too late!!Would be fun to have a car that COULD use it,,IF you could afford it!!
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Old Jan 11, 2012 | 11:47 PM
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Have never seen a pump with racing gas around here. No need for it in my stock car.
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Old Jan 12, 2012 | 10:05 AM
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Originally Posted by Vetteman Jack
Have never seen a pump with racing gas around here. No need for it in my stock car.
The station that has this 110 octane, is real close to the Beach Bend Raceway here in Bowling Green KY.

http://www.beechbend.com/dragstrip.htm


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Old Jan 12, 2012 | 10:11 AM
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Originally Posted by itzza427
Yep,us old timers remember looking up all the "tune up specs" when we had to throw in point and plugs around every 10-15 thousand miles to keep it running good!! All the specs would include timing numbers ao X amount of degrees BTDC,,Before Top Dead Center !! For that gas,,ideally you'd be running 11.5-12.5 compression and no cats. As stated higher octane resists going off early in higher compression motors and is a waste in regular fuel motors burning some of it's energy too late!!Would be fun to have a car that COULD use it,,IF you could afford it!!
Yes sir, My first car was a 68 440 gtx back in 1986 and still remember gaping the points wrong the first time and watching the motor jumping around between the fenders going OH SH$T what did i do
Steve
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Old Jan 12, 2012 | 10:49 AM
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Originally Posted by Vetteman Jack
Have never seen a pump with racing gas around here. No need for it in my stock car.
They have it at several pumps around here, only reason I know this is because I have a friend had to run some in his all motor honda that put out something like 300 whp.
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Old Jan 12, 2012 | 01:04 PM
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Originally Posted by machz800ps
Toque,s explanation is correct. But you are correct that a cylinder is fired just before TDC
Steve
The spark happens before tdc, the fuel takes a little time to burn fully and provide pressure, that pressure (combustion) occurs after tdc.
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