unleaded, and leaded???
June-20th-2002, 11:53 PM
#1
Protege Newbie
Thread Starter
Join Date: Oct 2001
Location: Sheboygan, WI
Posts: 12
unleaded, and leaded???
i was wondering, i just noticed this one gas station in town here that sells racing gas at 110 octane, and i was wondering can you mix that with premium gas or regular gas???
June-21st-2002, 12:45 AM
#2
Protege Enthusiast
Join Date: Apr 2002
Location: Des Plaines, IL (NW of Chicago)
Posts: 80
I don't know if it'll do really bad things to your engine, but I seem to recall hearing that it will do really bad things to your catalytic converter. This means that if you're in an area with emissions tests, you'll fail them. Then you'll go get a new catalytic converter. Then, out lots o' $, you'll pass unless the leaded gas did bad things to your engine as well.
Oh, and I doubt that you could do things to our engines that would make them need 110 octane. Octane isn't a measure of power, it's a measure of how well the gas resists igniting too soon when injected into a hot cylinder. You could probably get hot enough to need that by running with no oil or coolant, but by the time you got there you'd have no need for more fuel.
Oh, and I doubt that you could do things to our engines that would make them need 110 octane. Octane isn't a measure of power, it's a measure of how well the gas resists igniting too soon when injected into a hot cylinder. You could probably get hot enough to need that by running with no oil or coolant, but by the time you got there you'd have no need for more fuel.
June-21st-2002, 09:27 PM
#4
Registered User
Join Date: Sep 2001
Location: Centennial, Colorado
Posts: 1,667
Originally posted by kc5zom
Why the hell would you use 110 octane gas in a street engine? Just use diesel. It will get you just as far.
Why the hell would you use 110 octane gas in a street engine? Just use diesel. It will get you just as far.
June-21st-2002, 10:18 PM
#5
Certified Sick Individual
Join Date: Mar 2002
Location: Houston, TX.
Posts: 1,141
You are going to put 110 octane gas in an engine meant for the street? Thats for highly modified engines. Not daily drivers. May not hurt anything but not much of a point to it either.
Note: And he's driving a P5 so more likely than not most of it is stock. Stock compression, timing, etc. In the past when I have worked with people running dragsters they move to racing fuel when they increase the compression to abnormal limits to fight preignition.
Not trying to be a dick here or anything.
Note: And he's driving a P5 so more likely than not most of it is stock. Stock compression, timing, etc. In the past when I have worked with people running dragsters they move to racing fuel when they increase the compression to abnormal limits to fight preignition.
Not trying to be a dick here or anything.
Last edited by kc5zom; June-21st-2002 at 10:24 PM.
June-21st-2002, 11:38 PM
#6
Certified Sick Individual
Join Date: Mar 2002
Location: Houston, TX.
Posts: 1,141
Just so we can revisit this issue again I was looking and there are several good primers on the web about when to use higher octane fuels. Try doing a search on Google for the terms "Racing High Octane Fuel" or something similar and just read a few links.
So, basically if you read those its not an issue. Unless you just plopped down 1500 or however much Mazdaspeed wants for their high compression engine upgrades. Which for a four-cylinder it usually pays off better to go forced induction instead of naturally aspirated. A V6 or a V8 will get good gains from regular tuning, as the F150 will attest (and it has beaten quite a few cars in its time, could it be the 5.8L of fire breathing power?).
And the diesel thing was a joke. Duh.
So, basically if you read those its not an issue. Unless you just plopped down 1500 or however much Mazdaspeed wants for their high compression engine upgrades. Which for a four-cylinder it usually pays off better to go forced induction instead of naturally aspirated. A V6 or a V8 will get good gains from regular tuning, as the F150 will attest (and it has beaten quite a few cars in its time, could it be the 5.8L of fire breathing power?).
And the diesel thing was a joke. Duh.
June-22nd-2002, 01:08 PM
#7
Registered User
Join Date: Jun 2002
Posts: 55
holy shikes! you can get racing gas in your town?!?! lucky. i dunno if it hurts your engine but i sincerelly doubt it. it simply avoids detonation and has more explosive force when it burns. you should try mixing it with premium gas in different amounts and see what happens. no point in running it on the street though, go to the track!
