Car Forums  

Go Back   Car Forums > General Discussions > General Chat
FAQ Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-27-2005, 05:07 AM   #1
Flirtyboy04
CF Newbie
 
Join Date: May 2005
Location: Norco
Posts: 10
Octane

Ok I have a 92 accord and i run the cheapest gas around, but my question is I ran 103 octane one in my car and loved the idle and accleration was a lot better, so my questions are does that octane do it or is it just in my head, and will this damage my motor if i went to only running 103, i was thinking that because i get better gas milage with it then even 99 or 87 and miles per gallon it was cheaper?
Flirtyboy04 is offline   Reply With Quote
Old 05-27-2005, 05:23 AM   #2
hondaman
I drive a Buick.
 
hondaman's Avatar
 
Join Date: May 2005
Location: Somewhere in Alabama
Posts: 1,432
It is in your head. No Accord sold in America to date needs above base level octane. I hate to say it dude, but you are just throwing your money away.

It won't hurt the engine to use it though, but it won't create any difference in performance either.
__________________
hondaman is offline   Reply With Quote
Old 05-30-2005, 09:09 PM   #3
Oomba
Banned
 
Oomba's Avatar
 
Join Date: Jan 2005
Location: Ohio
Posts: 1,137
Same situation with my friend who has a 93 probe GT, thinks buying 103 is actually doing something for him.
Oomba is offline   Reply With Quote
Old 05-31-2005, 02:19 PM   #4
ChrisV
The Big Meaney
 
ChrisV's Avatar
 
Join Date: Mar 2004
Location: People's Republic of Maryland
Posts: 3,714
Higer octane burns slower (so it resists detonation more at elevated compression levels). But because it burns slower, it won't burn completely in a car designed for lower octane, thus giving you worse fuel mileage, and possibly shortening the life of your catalytic converter. A little higher than recommended for your car won't hurt it (though it won't give any gains), but a lot higher is not good AND will perform worse. 103 octane in a car designed for regular won't even be assisted by knock senor ignition, as it won't advance the timing enough to take advantage of the higher octane.

Leave 103 octane for racing engines and performance engines with 12:1 or greater compression.
__________________
I'm not mean. You're just a wuss.



www.midatlantic7s.com
ChrisV is offline   Reply With Quote
Old 05-31-2005, 09:32 PM   #5
Zalight
Who's house? Runs house.
 
Zalight's Avatar
 
Join Date: Mar 2004
Location: Albuquerque, New Mexico
Posts: 2,264
all right, im going to work out what im trying to say while saying it, so it probably won't make much sense, but:

I have always known that higher octane is just to help against a case of the knocks in high comppression applications, right? Well, what about forced induction? Is a higher octane needed then? I mean, I know there's a difference between say a turbo probe and an STI, but would the probe require high octane?

And what about bikes? My friend has a Ducati 750 super sport and a triumph TT6, the triumphs compression is 14:1 and he normally runs 93 octane, but he says he has put 87 in it before and it ran fine.

And the last question I have is this; if a car is made to run premium only, like say a third gen rx-7, and you always put premium in it, will you get any performance gains off racing fuel, lke 101 octane?
__________________
1999 BMW ///M3
Zalight is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Forum Jump



All times are GMT +1. The time now is 07:20 AM.

Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 2002 - 2011 Car Forums. All rights reserved.