02-10-2004, 04:35 PM
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#16
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Regular User
Join Date: Oct 2003
Location: Hellaware USA
Posts: 3,865
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Btw octane is basically how fast the fuel burns, higher the octane the slower it burns...if you run too low octane it will ignite from compression rather than the spark (detonation), which is very bad for the engine. Under heavy detonation your engine may only last a few seconds...
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I hate to be a stickler but it isn't how fast it burns. It is the resistance to ignition. Your timing has to be adjusted to take advantage of this resistance. Beyond that your dead on.
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02-10-2004, 04:45 PM
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#17
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Regular User
Join Date: Oct 2003
Location: Hellaware USA
Posts: 3,865
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For information on race gas read here:
http://corner-carvers.com/forums/sho...t=jim+race+gas
Pay particular attention to jim aka rouschgtr. He was the man in charge of sunocos race gas program. Because of him I can buy that race gas at the local sunoco.
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02-10-2004, 04:46 PM
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#18
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Join Date: Dec 2003
Location: Atlanta
Posts: 2,610
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Originally Posted by graywolf624
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Btw octane is basically how fast the fuel burns, higher the octane the slower it burns...if you run too low octane it will ignite from compression rather than the spark (detonation), which is very bad for the engine. Under heavy detonation your engine may only last a few seconds...
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I hate to be a stickler but it isn't how fast it burns. It is the resistance to ignition. Your timing has to be adjusted to take advantage of this resistance. Beyond that your dead on. |
Yea, I know...I was just trying to make it easier to understand, but went to far and was a little bit incorrect...
Thanx for the correction.
__________________
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1992 Toyota Celica GT 5spd, intake.
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02-10-2004, 04:52 PM
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#19
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Regular User
Join Date: Oct 2003
Location: Hellaware USA
Posts: 3,865
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02-10-2004, 04:58 PM
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#20
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Regular User
Join Date: Oct 2003
Posts: 183
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The most I've seen around Vancouver is 94.
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02-10-2004, 05:05 PM
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#21
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Regular User
Join Date: Oct 2003
Location: Hellaware USA
Posts: 3,865
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LOL, no you love to be a stickler gray..........
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Thats me.. The big pain in the ass. 
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02-11-2004, 12:55 PM
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#22
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Regular User
Join Date: Dec 2003
Posts: 151
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I miss the high-octane availability (even 93) in the lower altitude states.
Here in CO the highest we have regularly available is 91, which is fine for N/A engines, but when you'd like to take advantage of forced induction, you really have to lower your boost settings.
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02-11-2004, 01:12 PM
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#23
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Join Date: Dec 2003
Location: Atlanta
Posts: 2,610
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Well, if you live in Colorado, where the elevation is high you really don't need high octane.
__________________
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1992 Toyota Celica GT 5spd, intake.
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02-11-2004, 01:44 PM
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#24
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Regular User
Join Date: Oct 2003
Location: Hellaware USA
Posts: 3,865
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Here in CO the highest we have regularly available is 91, which is fine for N/A engines, but when you'd like to take advantage of forced induction, you really have to lower your boost settings.
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It could be worse. They did the same thing in CA and they have lower altitudes.
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02-11-2004, 03:01 PM
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#25
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Regular User
Join Date: Jan 2004
Location: Detroit
Posts: 9,929
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MI is average 423Ft. above sea level... not much up there in altitude... and again, we have the auto industry to thank for my state's emmision laws, and such...(thank god, cause almost everything is streetable) our octane ratings here are ranging from 86-130 is the highest pump ive seen, 110 is more available, at select locations. ive only seen 130 near Paradice, MI... primarily used by high performance snomobiles.
the highest octane ive used is shell 94 designed w/ferrari in mind 
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02-11-2004, 06:41 PM
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#26
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Regular User
Join Date: Feb 2004
Location: Chile
Posts: 18
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In Chile we have 93, 95 and 97 octanes in almost all the country
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02-11-2004, 09:32 PM
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#27
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Regular User
Join Date: Dec 2003
Posts: 151
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Originally Posted by sentra_dude
Well, if you live in Colorado, where the elevation is high you really don't need high octane.
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You are correct--if you have a NA engine. (since lower air density = lower overall pressure in the combustion chamber)
You are wrong--if you have a custom turbo setup and would like to run the same boost levels as you would at sea level. Granted, if you are running against NA cars, you should be able to run lower boost to be "fair". But who wants to be fair?
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02-11-2004, 09:34 PM
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#28
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Regular User
Join Date: Dec 2003
Posts: 151
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Originally Posted by nthfinity
MI is average 423Ft. above sea level... not much up there in altitude... and again, we have the auto industry to thank for my state's emmision laws, and such...(thank god, cause almost everything is streetable) our octane ratings here are ranging from 86-130 is the highest pump ive seen, 110 is more available, at select locations. ive only seen 130 near Paradice, MI... primarily used by high performance snomobiles.
the highest octane ive used is shell 94 designed w/ferrari in mind |
I used to live in MI, and it was awesome being able to get 94 octane at the pump at ANY Sunoco!
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02-11-2004, 09:35 PM
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#29
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Regular User
Join Date: Dec 2003
Posts: 151
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Originally Posted by graywolf624
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Here in CO the highest we have regularly available is 91, which is fine for N/A engines, but when you'd like to take advantage of forced induction, you really have to lower your boost settings.
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It could be worse. They did the same thing in CA and they have lower altitudes. |
Gray--now THAT's being an optimist!
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02-12-2004, 11:03 AM
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#30
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Regular User
Join Date: Jan 2004
Location: Portugal
Posts: 498
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100 octane. It's new, about one, two weeks. BP gasoline.
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"Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car. Horsepower is how fast you hit the wall, torque is how far you take the wall with you."
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