Would it hurt a tuned port injection engine to run race fuel
#1
Senior Member
DYNO OPERATOR
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Join Date: Mar 2009
Location: Booneville,Ms
Posts: 505
Would it hurt a tuned port injection engine to run race fuel
I have a 350 TPI in my truck and was wondering while I have it at the track messing around in it would it hurt to run some race fuel in it? Or should I just get some 93 octane at a regular gas station?
#3
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RACING JUNKIE
Join Date: Mar 2006
Location: EUGENE,OR.
Posts: 3,391
Should not hurt... don't expect any big improvements though. I have ran race fuel in my lawn mower when out of pump gas... put it in bikes too. No real notable benefits other than it may run slightly run cooler & possibly take away some ping depending on timing. In a stock motor, I agree w/ El`SUPA BEASTO~... it is a waste of money.
#6
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RACING JUNKIE
Join Date: Sep 2007
Posts: 4,137
[quote="Rigsby"]Should not hurt... don't expect any big improvements though. I have ran race fuel in my lawn mower when out of pump gas... quote]
I for the life of me don't understand why this happened...but it did. My uncle ran out of gas while mowing his yard with a JD riding mower...put in some race gas and the piston ended up melted. I do not understand why but it happened. :?
I for the life of me don't understand why this happened...but it did. My uncle ran out of gas while mowing his yard with a JD riding mower...put in some race gas and the piston ended up melted. I do not understand why but it happened. :?
#10
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Join Date: Apr 2008
Posts: 504
Lead kills converters and O'2 sensors
The lead in the racing fuel WILL kill your O'2 sensor real fast, and your catalytic converter as well. Five gallons, if it were not diluted would be enough to do it. This will not set off a check engine light instantly, but will make it run too rich from that day on.......
The piston burned that was mentioned would have to have been on an engine that could not compensate fuel mixture for a very low specific gravity fuel that ran too lean compared to the heavy SG pump gas that has near .745 on no lead and .699 SG on C 14 racing fuel, big difference on jetting requirements, not the octane. I hope this answers your curiosity about leaded fuel in your emission engine.
Bruce
The piston burned that was mentioned would have to have been on an engine that could not compensate fuel mixture for a very low specific gravity fuel that ran too lean compared to the heavy SG pump gas that has near .745 on no lead and .699 SG on C 14 racing fuel, big difference on jetting requirements, not the octane. I hope this answers your curiosity about leaded fuel in your emission engine.
Bruce