09-14-2008, 01:54 AM #1
How Important is the Proper Octane?
I hate the guy who says "It should be all right" just don't give it full throttle.
Fact is, you're better off running at higher RPM's where the timing is backed off than you are at say 4500 RPM when the timing is advanced, the load is heavy and temperatures rise.
09-14-2008, 07:25 AM #2
- Join Date
- Sep 2006
wouldnt it be asking for trouble say if you were cruiseing all day i thought its when the thing has been at wot for an hour and then the 89 octane does its damage
09-14-2008, 10:08 AM #3
- Join Date
- Oct 2006
- Cleveland OH
09-14-2008, 11:10 AM #4
09-14-2008, 01:11 PM #5
Liz brought her in running and there was absolutely NO damage to the cylinders. I can't tell you how pleased I was to see they were good.
We were using VP110, just as we have been for the last 100 hours with no issues.
Compression on the other 2 cylinders is still 160.
Same timing curve.
No hydro-lock (This would retard the timing in that cylinder versus advance it anyway??)
Maybe the formula has changed?
Sat around at the gas station too long?
Somebody swapped the labels?
I decided to bump the compression, advance the timing and go with C-12.
Waiting on pistons and seals.
09-14-2008, 01:54 PM #6
I'm planning to import some skis (Ultra 250 or FZR) to Sweden from the states, but I´ve been thinking about the octane.. Here in Sweden, the standard gas is 95, the premium 98 and you can get up to 99 octane at Shell (called V-power) in the pump.
I own a RXT - 07 now, which is brought here from the states that I have been running 95 octane in without any problems for 40 h....
So my question is: Do I have to get another ECU or something that can handle the higher octane better?
09-14-2008, 02:09 PM #7
What method does Sweden use to rate Octane?? In the US we use ROM/MON for automotive fuel.
09-14-2008, 02:20 PM #8
- Join Date
- Jul 2007
- near Toronto, Canada
09-14-2008, 02:37 PM #9
But what will happen if you run Aspen Racing Fuel in it? Isn´t that like 110 octane?
The reason I´m asking about Aspen is the environmental aspect of racing. Aspen has some kind of arkylat (is it called that in the US?) gas, right?
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