purpose of higher octane fuel in magnum engines
Thread Starter
|
Veteran
Joined: Jun 2004
Posts: 435
Likes: 0
From: south portland, me
purpose of higher octane fuel in magnum engines
for those of you who use 93, what are your reasons? does it actually do anything better for your engine? i mean, 318 and 360 are fuel injected and are low compression... maybe advancing the timing with higher o can generate more power? fill me in...
Banned
Joined: Jan 2004
Posts: 10,136
Likes: 1
From:
RE: purpose of higher octane fuel in magnum engines
In alot of cases in newer cars it's a waste of money. If you have a car you can adjust the timing on, it could benefit you. Sometimes a higher octane fuel can make the car harder to start during cold weather I've read.
I actually mix 93 and 87 octane since my local station doesn't carry midgrade fuel which is recommended in the Hemi.
I actually mix 93 and 87 octane since my local station doesn't carry midgrade fuel which is recommended in the Hemi.
Hall Of Fame
Joined: Jun 2004
Posts: 12,484
Likes: 0
From: New Hampshire
RE: purpose of higher octane fuel in magnum engines
wel the wa ive read it is
high octane fuel wont do anything for ur engine that lower octane fuel wont do..unless ur "pinging" from too much HP or w/e and too low of an octane
it wont burn cleaner it wont give u more hp it just costs more
high octane fuel wont do anything for ur engine that lower octane fuel wont do..unless ur "pinging" from too much HP or w/e and too low of an octane
it wont burn cleaner it wont give u more hp it just costs more
Veteran
Joined: Oct 2004
Posts: 416
Likes: 0
From: PA
RE: purpose of higher octane fuel in magnum engines
Not sure how true this is or not, but I've heard that running a high octane fuel in a low compression engine is actually worse for it. Reason being is, the higher octane fuel won't burn as completely as the lower grade and result in more carbon buildup.
R.I.P. Dusty (Retired Moderator
Joined: Dec 2003
Posts: 24,471
Likes: 0
From: Alamosa, Colorado (200 yards from the Rio Grande)
RE: purpose of higher octane fuel in magnum engines
"Octane" is just a measure of the gasoline's resistance to "knocking" or "pinging". Nothing more. The additives are put in to slow down the possible "pre-ignition" resulting from a high compression engine's heat setting off the gasoline before the correct time....it's logical that high octane in a low compression engine might not be the best since the fuel might not totally burn....
Professional
Joined: Jun 2004
Posts: 101
Likes: 0
From:
RE: purpose of higher octane fuel in magnum engines
Just like dusty said, all octane does is to prevent engine pinging & knocking. Using Premium fuel is a waste of money for a engine that is rated for 87 octane. It will not give you additional horsepower contrary to popular belief. I used to own a gas station.
Rookie
Joined: Dec 2004
Posts: 62
Likes: 0
From:
RE: purpose of higher octane fuel in magnum engines
The most common reason people bump up to a higher octaine fuel in their vehicles is because of aftermarket engine computers which advance the timing (In reference to engines with stock compression). Quite a bit of timing is added in some cases (BG Chrysler flash for example). The additional power comes from the advanced timing, and the higher octaine fuel prevents preignition.
Long story short... Just use REGULAR fuel unless you NEED to use midgrade/premium.
Long story short... Just use REGULAR fuel unless you NEED to use midgrade/premium.