egt temps

302crew · 01-20-2003, 07:19 PM

i just installed my egt gauge and the probe is probably an inch to and inch and a half from the head and its reading 1500 maybee more is this too high and if so how do i get it to where i want it to i just put bigger jets in the carb

Bad89stang · 01-20-2003, 10:28 PM

that is a very reasonable number for exhaust temperature. The further you move from the head... the cooler the temp. Headers reach 1500 easily.

Jeff Chambers · 01-21-2003, 08:09 AM

You really need to baseline the temperatures with a known A/F ratio. Go to the dyno and tune the car with the wideband O2 meter. Then make a few full passes with the car in that configuration (hopefully in similar weather conditions) to get a baseline EGT. Don't try to establish your EGT while you're on the chassis dyno. The EGT is too slow responding to get a full EGT reading during a six-second dyno pull.

I usually try to set my baseline on the engine dyno since you can hold the motor under load long enough to let the EGT fully respond. You also get immediate EGT/HP correlation with the engine dyno too. I suppose you could do the same on the chassis dyno if you're dyno operator is willing to hold your car at 6000+rpm for a few seconds rather than just passing through it.

BTW: My best HP/ET/MPH seem to be with an EGT around 1460F, but this doesn't mean squat for your combination/EGT placement/etc. There are a ton of variables that will affect the EGT temperature.

saltzstang · 01-22-2003, 10:16 PM

Right on the money Chambers!

01-20-2003, 07:19 PM	#1
302crew Registered Member Join Date: May 1999 Location: sloatsburg Posts: 261	egt temps i just installed my egt gauge and the probe is probably an inch to and inch and a half from the head and its reading 1500 maybee more is this too high and if so how do i get it to where i want it to i just put bigger jets in the carb __________________ 306 edelbrock 6037 heads full mac exuast 1.7 rr 373 rear hd clutch tremec mighty demon 650 carb msd ignition rpm air gap intake custom cam still trying to get it to run right

01-20-2003, 10:28 PM	#2
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	EGT that is a very reasonable number for exhaust temperature. The further you move from the head... the cooler the temp. Headers reach 1500 easily. __________________ You're gonna need your seatbelt

01-21-2003, 08:09 AM	#3
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	You really need to baseline the temperatures with a known A/F ratio. Go to the dyno and tune the car with the wideband O2 meter. Then make a few full passes with the car in that configuration (hopefully in similar weather conditions) to get a baseline EGT. Don't try to establish your EGT while you're on the chassis dyno. The EGT is too slow responding to get a full EGT reading during a six-second dyno pull. I usually try to set my baseline on the engine dyno since you can hold the motor under load long enough to let the EGT fully respond. You also get immediate EGT/HP correlation with the engine dyno too. I suppose you could do the same on the chassis dyno if you're dyno operator is willing to hold your car at 6000+rpm for a few seconds rather than just passing through it. BTW: My best HP/ET/MPH seem to be with an EGT around 1460F, but this doesn't mean squat for your combination/EGT placement/etc. There are a ton of variables that will affect the EGT temperature. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

01-22-2003, 10:16 PM	#4
saltzstang Registered Member Join Date: Sep 2002 Location: southeast texas Posts: 90	Right on the money Chambers! __________________ AFR 1492 heads,Track Heat Intake, d.s.s super pro bullet 331, lakewood bell, king cobra, 3550 ,UPR shifter, aluminum shaft, 4.10, 31-spline, spool,hoosier27x10, moroso ds-2, 175-juice, egt...11.40 on motor spray pass coming.

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