Race fuel, Needed or not???
06-28-2006, 12:20 PM
#1
Race fuel, Needed or not???
I have been mixing c12 and 93 octane. I have people telling me I need to use C12 fuel. I have others telling me I don't. If I need it, I don't mind using it. If I don't, I would rather save the $400 per tank full. My engines are 8.5 to 1 and I am running about 7 lbs of boost. i have just over 1,100 HP. Is there an accurate way of figuring out if you need the extra octane?
06-28-2006, 12:44 PM
#3
Charter Mod
Charter Member
Re: Race fuel, Needed or not???
Originally Posted by sakoutis3
Who built the engines call them.
My engines will run on 93 if they need to but I go ahead and run 110 for piece of mind.
06-28-2006, 12:49 PM
#4
VIP Member
VIP Member
Re: Race fuel, Needed or not???
Originally Posted by LubeJobs42
I have been mixing c12 and 93 octane. I have people telling me I need to use C12 fuel. I have others telling me I don't. If I need it, I don't mind using it. If I don't, I would rather save the $400 per tank full. My engines are 8.5 to 1 and I am running about 7 lbs of boost. i have just over 1,100 HP. Is there an accurate way of figuring out if you need the extra octane?
06-28-2006, 12:51 PM
#5
VIP Member
VIP Member
Re: Race fuel, Needed or not???
Originally Posted by blume
at 8.5 to 1 and 7lb's of boost with a innercooler, I will post a chart.
06-28-2006, 12:56 PM
#6
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Re: Race fuel, Needed or not???
Originally Posted by blume
Last edited by blume; 06-28-2006 at 01:09 PM.
06-28-2006, 01:04 PM
#7
Re: Race fuel, Needed or not???
I am at 9lbs on 93 only 
no boom yet 
We Dynoed it at Precision Marine past 9 lbs and it picked up some detination so we put it on some race gas and went up to 11.5lbs of boost with no detination 
The motor in My old Scarab was at 11.5psi on 93 with no probs.Tuned it on Oddys Dyno
Rob
no boom yet We Dynoed it at Precision Marine past 9 lbs and it picked up some detination so we put it on some race gas and went up to 11.5lbs of boost with no detination The motor in My old Scarab was at 11.5psi on 93 with no probs.Tuned it on Oddys Dyno
Rob
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Last edited by Strip Poker 388; 06-28-2006 at 01:11 PM.
06-28-2006, 02:12 PM
#9
Re: Race fuel, Needed or not???
Originally Posted by blume
I think the chart is with no innercooler. Talked to BDS and they said, as long as you are at your max rpm, you are not going over 7lb's of boost of innercooled air, 93oct is what you should run. Thats with alum. heads and a 12 to 14:71 blower.
06-28-2006, 02:18 PM
#10
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Re: Race fuel, Needed or not???
Originally Posted by LubeJobs42
I have 14-71's, Aluminum heads, intercooler, mechanical and electric fuel pumps. I figure the last thing I need is to ber kicking Rio Roses Ass and having a problem because I used 93 octane!
