Go back to previous topic
Forum namePerformance/Engine
Topic subjectdoes fuel temperature have anything significant to do with A/F readings?
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=78832
78832, does fuel temperature have anything significant to do with A/F readings?
Posted by tim97rs, Aug-10-04 07:39 PM
will a higher temp. fuel have any effect on A/F over a cooler temp. fuel?
78833, RE: does fuel temperature have anything significant to do with A/F readings?
Posted by siueclipse, Aug-10-04 11:12 PM
no..

its hot by the time it reaches the cylinder
78835, RE: does fuel temperature have anything significant to do with A/F readings?
Posted by Star Turbo Talon, Aug-11-04 12:58 AM
The reason many NHRA racers run cooling cans on their fuel is or atomization and its one less factor when dealing with detonation. Cooler fuel is not as effective as cooler air but when your engine water jackets are filled solid the engine tends to heat up pretty quickly.

Terry
78837, RE: does fuel temperature have anything significant to do with A/F readings?
Posted by tim97rs, Aug-11-04 04:49 AM
okay, cause it seemed to me to be the only relative factor change (increased temps) after doing a large hand full of runs. wideband A/F's were in the 11.3-11.8 range in the beginning, but buy the end of the runs i was in the high 9's low 10's for A/F... any other reasons why my A/F might be changing like that?
78838, RE: does fuel temperature have anything significant to do with A/F readings?
Posted by Star Turbo Talon, Aug-11-04 04:57 AM
I would be going after heat soak in the intake manifold and things of that nature. How much were you leftting the engine cool off after your runs? That might have somthing to do with it. Are you ice packing the top of the intake when you run? That is a trick you could try see if it helps a little. We always did that with my friends LT1 T/A.

Terry
96 Eagle talon ESI
Greddy header - Greddy exhaust

97 Eclipse
Star Stage II - Boost/oil/EGT gauges - Apexi N1 3" exhaust - SFMU/return line - Apexi SAFC - Stage 2 6 puck Sprung hub MIBA clutch - Shortened shifter - Koni Yellows w/eibach prokit - Stillen Fr/Rr swaybars - ceramic intake - DEI Keyless entry alarm - Niche 17" Shoks

Waiting to be installed: HKS EVC IV, 450 Turbo injectors, GSX Front brakes (need rotors)

Mitchell on Demand copies available