Octane
Printed From: Tippmann Paintball
Category: News And Views
Forum Name: Thoughts and Opinions
Forum Description: Got something you need to say?
URL: http://www.tippmannsports.com/forum/wwf77a/forum_posts.asp?TID=168553
Printed Date: 25 January 2026 at 2:12pm Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Octane
Posted By: WGP guy2
Subject: Octane
Date Posted: 13 July 2007 at 7:52pm
So, I just learned this today. Who knows what the octane measurement of gasoline means (without looking it up).
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Replies:
Posted By: Dye Playa
Date Posted: 13 July 2007 at 7:54pm
resistance of gas before it's supposed to explode, i think.
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Posted By: WGP guy2
Date Posted: 13 July 2007 at 7:56pm
Dye Playa wrote:
resistance of gas before it's supposed to explode, i think.
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Kind of, I'm looking for a certain term though.
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Posted By: Benjichang
Date Posted: 13 July 2007 at 8:07pm
Ugh. I can answer this, but I just finished Organic Chem 1 today and I'm not in the mood.
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Posted By: Brian Fellows
Date Posted: 13 July 2007 at 8:11pm
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HOW MUCH IT MAKES YOU TRIP BALLS WHEN YOU HUFF IT LOLOL
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Posted By: Panda Man
Date Posted: 13 July 2007 at 8:15pm
83 - 89
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Posted By: usafpilot07
Date Posted: 13 July 2007 at 8:27pm
I played with an Octane shocker today. Just a fun coinkydink.
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Posted By: choopie911
Date Posted: 13 July 2007 at 8:30pm
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It has something to do with airplanes, amirite??
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Posted By: WGP guy2
Date Posted: 13 July 2007 at 8:50pm
choopie911 wrote:
It has something to do with airplanes, amirite?? |
If the airplane happens to be a piston plane, then yes.
Its the fuel's resistance to detonation. 
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Posted By: choopie911
Date Posted: 13 July 2007 at 9:07pm
Posted By: Brian Fellows
Date Posted: 13 July 2007 at 10:57pm
Posted By: Enos Shenk
Date Posted: 13 July 2007 at 10:57pm
WGP guy2 wrote:
So, I just learned this today. Who knows what the octane measurement of gasoline means (without looking it up).
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Without looking it up, and without reading any responses here:
Its the rating of the temperture the gas will handle before ignition. It helps prevent pre-ignition from compression mainly.
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Posted By: choopie911
Date Posted: 13 July 2007 at 10:58pm
shenk ftw. Anyone surprised?
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Posted By: Dye Playa
Date Posted: 13 July 2007 at 11:00pm
WGP guy2 wrote:
Its the fuel's resistance to detonation. 
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Dye Playa wrote:
resistance of gas before it's supposed to explode, i think.
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explode=detonation, just to let you know.
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Posted By: Enos Shenk
Date Posted: 13 July 2007 at 11:02pm
Dye Playa wrote:
explode=detonation, just to let you know.
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In general terms, yes.
But in regards to gasoline engines, the term Detonation means something entirely different. Its a slangish term for pre-ignition, where the fuel/air mix ignites before the piston clears top dead center. It puts huge stress on the piston, connecting rod, and crankshaft.
Its also called "Knock"
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Posted By: GI JOES SON
Date Posted: 13 July 2007 at 11:14pm
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choopie911 wrote:
shenk ftw. Anyone surprised?  |
nope, enos is the mechanical guy around here. chances are wpg is sitting there going, aww shucks. or something to that effect using language that cant be typed
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Posted By: WGP guy2
Date Posted: 13 July 2007 at 11:32pm
Posted By: __sneaky__
Date Posted: 14 July 2007 at 12:15am
Most any major car guy will tell you, the fuel air mixture doesnt "exsplode" it combusts. personally I dont see the differance, but apparently they sure do...
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Posted By: Ghost-Rider
Date Posted: 14 July 2007 at 12:21am
Combust is more like ..just igniting vs. EXPLOSION.
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Posted By: Project Irene
Date Posted: 14 July 2007 at 1:19am
Yes, try advancing the timing on your vehicle.
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Posted By: __sneaky__
Date Posted: 14 July 2007 at 1:23am
Project Irene wrote:
Yes, try advancing the timing on your vehicle.  | heh... how bout not.
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Posted By: travis75
Date Posted: 14 July 2007 at 9:24am
burn fast vs. esplode
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Posted By: __sneaky__
Date Posted: 14 July 2007 at 3:15pm
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^makes sense
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Posted By: FROG MAN
Date Posted: 16 July 2007 at 12:30pm
that seems like a very watered down answer
wiki wrote:
Octane is an http://en.wikipedia.org/wiki/Alkane" title="Alkane - alkane with the http://en.wikipedia.org/wiki/Chemical_formula" title="Chemical formula - chemical formula CH3(CH2)6CH3. It has 18 http://en.wikipedia.org/wiki/Isomer" title="Isomer - isomers .
One of the isomers, http://en.wikipedia.org/wiki/2%2C2%2C4-trimethylpentane" title="2,2,4-trimethylpentane - 2,2,4-trimethylpentane or isooctane, is of major importance, as it has been selected as the 100 point on the http://en.wikipedia.org/wiki/Octane_rating" title="Octane rating - octane rating scale, with http://en.wikipedia.org/wiki/Heptane" title="Heptane - n-heptane as the zero point. Octane ratings are ratings used to represent the anti- http://en.wikipedia.org/wiki/Engine_knocking" title="Engine knocking - knock performance of petroleum-based fuels (octane is less likely to prematurely combust under pressure than heptane), given as the http://en.wikipedia.org/wiki/Percentage" title="Percentage - percentage of 2,2,4-trimethylpentane in an 2,2,4-trimethylpentane / n-heptane mixture that would have the same performance. It is an important constituent of http://en.wikipedia.org/wiki/Gasoline" title="Gasoline - gasoline . |
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Posted By: SandMan
Date Posted: 16 July 2007 at 12:38pm
In simpler (and admittedly less complete) terms, higher octane causes the gasoline to combust in a much more even and predictable manner. As Enos touched on, this helps prevent piston "knock" and potential damage to the engine, especially in the case of performance cars.
Both my cars require Premium... And both get 18 MPG.
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