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View Full Version : Low Octane (87) VS HIGH GRADE FUEL (94): Does it Affect your starting



DieselBoy
03-10-2006, 05:33 PM
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Low Octane (87) VS HIGH GRADE FUEL (94): Does it Affect your starting
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Do you find a noticable difference between these 2 fuels? I did a test and the high octane make's the bike start MUCH easier. Do you find the same results? Do you run 87?

My reason for running 94 for a reason other than the easy starting, and zing, the 94 grade fuel actually makes your engine run cooler.

Goodbye 87, hello 94:devil:

What are your thoughts?

Mxjunkie
03-10-2006, 05:59 PM
Imo you shouldnt run anything below 94 in quads.. :)

400exrules
03-10-2006, 09:26 PM
i run 93, i wont put anything lower in it

Cody_300ex
03-10-2006, 09:36 PM
I dont run anything lower than 104, mostly 110.

Rico400
03-10-2006, 10:05 PM
only chevron premium or better

LTZ400rider
03-10-2006, 10:44 PM
94 makes it hard to start dummy, its all in your head. plus it takes 1/4 second to start my quad.

94 octane is more resistant to burning then 87, so it wont fire as good. but if u have a high comp piston then high octane is needed

2002400ex
03-10-2006, 10:59 PM
Ive always ran 87. But if my compression was higher than stock then i would run high octane

Eddiesanders250
03-10-2006, 11:11 PM
i run 110:devil:

Sportrax10
03-10-2006, 11:30 PM
I swear I get better gas mileage running 94...

DieselBoy
03-11-2006, 12:06 AM
Originally posted by LTZ400rider
94 makes it hard to start dummy, its all in your head. plus it takes 1/4 second to start my quad.

94 octane is more resistant to burning then 87, so it wont fire as good. but if u have a high comp piston then high octane is needed

I hope to F*** your joking. You are DUMB as F*** if that's how you think it goes. Who the F*** taught you about engines?!

LTZ400rider
03-11-2006, 12:20 AM
does any1 agree with me?

lets not get this shut down before i prove a point

edit, when i say its hard to start with the 94 i wasnt saying it was actually hard to start, im just saying it would be easier with 87, and u would get more power. on a stock Z400 that is

now on a banshee or yfz etc u would need 91 min

dieselboy, please explain ur theory

dangle
03-11-2006, 05:32 AM
Lmao... I ran 87 in my crf for 6 months with no ill effects....


Mike

2004exrider
03-11-2006, 08:58 AM
Originally posted by DieselBoy
I hope to F*** your joking. You are DUMB as F*** if that's how you think it goes. Who the F*** taught you about engines?!

:huh ... I hope your joking. The lower the octane the more combustible it is. 87 will ignite faster than a higher octane fuel. That's why you cant run 87 in an engine with say 13:1 compression or else it will get pre detonation, thats when you need the higher octane fuel so it doesnt ignite off the compression and heat of the engine. It will only ignite when the spark plug fires. So calm down before you go bashin.

Jimmy

zeppelin
03-11-2006, 09:02 AM
Originally posted by 2004exrider
:huh ... I hope your joking. The lower the octane the more combustible it is. 87 will ignite faster than a higher octane fuel. That's why you cant run 87 in an engine with say 13:1 compression or else it will get pre detonation, thats when you need the higher octane fuel so it doesnt ignite off the compression and heat of the engine. It will only ignite when the spark plug fires. So calm down before you go bashin.

Jimmy

exactly, deiselboy... just stfu

400exrules
03-11-2006, 09:52 AM
Originally posted by 2004exrider
:huh ... I hope your joking. The lower the octane the more combustible it is. 87 will ignite faster than a higher octane fuel. That's why you cant run 87 in an engine with say 13:1 compression or else it will get pre detonation, thats when you need the higher octane fuel so it doesnt ignite off the compression and heat of the engine. It will only ignite when the spark plug fires. So calm down before you go bashin.

Jimmy

thats exactly what i was thinking........thank you for clearing that up:cool:

MOFO
03-11-2006, 10:17 AM
Originally posted by DieselBoy
I hope to F*** your joking. You are DUMB as F*** if that's how you think it goes. Who the F*** taught you about engines?!


You just got your own thread closed kid. This is your only warning from me - next step is the boot!

Why dont you start another one and tell us how GM's Duramax is the same motor as the old 6.2 and 6.5 diesels... :rolleyes:

Who taught you about engines - let alone diesel motors??? If needed, I can bring a few of your quotes back or the entire thread. :eek2: