EGT Gauge
10-23-2004, 03:58 PM
#4
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Actually, I know,
I was making a high speed pass the other day and my fuel pump went wayyyy South. The data logs later confirmed it with an EGO voltage that dropped from mid 4 volts to under 1 volt for the last 2 or so miles.
During that time my EGT read about 1600 degrees. As of now my compression is like 195, 174, 145, 128. I have run the car hard, 80 or so seconds at wide open throttle, with temps as high as 1500 degrees with no damage. A four valve head has small valves so you can get away with high temps more than a two valve head, but still, I would say 1450 is what you should shoot for as a max.
Keep the shiny side up,
Jim
I was making a high speed pass the other day and my fuel pump went wayyyy South. The data logs later confirmed it with an EGO voltage that dropped from mid 4 volts to under 1 volt for the last 2 or so miles.
During that time my EGT read about 1600 degrees. As of now my compression is like 195, 174, 145, 128. I have run the car hard, 80 or so seconds at wide open throttle, with temps as high as 1500 degrees with no damage. A four valve head has small valves so you can get away with high temps more than a two valve head, but still, I would say 1450 is what you should shoot for as a max.
Keep the shiny side up,
Jim
10-25-2004, 02:17 PM
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Originally Posted by kitwetzler,Oct 25 2004, 08:35 PM
EGT is not a good tuning tool. You can get high EGTs from either timing retard or wrong a/f ratio. get a wideband 02.
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10-25-2004, 04:34 PM
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I wouldn't be so quick to discard the EGT as a tuning tool. We use a combination of EGO voltage and EGT to dial in the HP numbers. And so far we've gotten 238 RWHP from a stock situation using the Electromotive Tec III to drive everything.
All the best,
Jim
All the best,
Jim
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