E85 EGT's (What are yours)
10-10-08, 09:23 AM
#1
E85 EGT's (What are yours)
I have been logging my EGT's since switching to E85. My EGT probes are in the manifold preturbo on both runners. Normal egt temperatures with Gas are around 500 C (932 F) idle, 700 C (1300 F) cruise, 900-1000 C (1650-1830 F) WOT. At least this is what I have seen.
Why don't we list EGT's and your probes locations at Idle, WOT, and Cruise
So far I have only done idle work and will hopefully get into cruise this weekend. I can't believe my readings, under hood heat is so much less than on Gas.
Pre Turbo EGT Locations
Idle 12.8 AFR
EGT 500-520 F
Why don't we list EGT's and your probes locations at Idle, WOT, and Cruise
So far I have only done idle work and will hopefully get into cruise this weekend. I can't believe my readings, under hood heat is so much less than on Gas.
Pre Turbo EGT Locations
Idle 12.8 AFR
EGT 500-520 F
Last edited by fritts; 10-10-08 at 09:25 AM.
10-10-08, 09:56 AM
#2
91 octane running 500cc pure water AI over 6psi.
Probes are pre turbo, 1.5" from exhaust ports on the engine.
Idle: just under 1000F (gauge bottoms out at 1000F) 13.2-13.5AFR
Cruise: 1400-1500F @14.8-15.0AFR
WOT @ 18psi: 1700 front, 1650 rear @ 11.1-11.4AFR
Probes are pre turbo, 1.5" from exhaust ports on the engine.
Idle: just under 1000F (gauge bottoms out at 1000F) 13.2-13.5AFR
Cruise: 1400-1500F @14.8-15.0AFR
WOT @ 18psi: 1700 front, 1650 rear @ 11.1-11.4AFR
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10-27-08, 03:48 PM
#8
"Elusive, not deceptive!”
My PLX EGT probes are in the manifold preturbo on both runners.
My normal egt temperatures with Gas seem very high:
600 C idle,
850 C cruise,
950-1000 C WOT.
Barry
My normal egt temperatures with Gas seem very high:
600 C idle,
850 C cruise,
950-1000 C WOT.
Barry
10-28-08, 07:26 AM
#10
"Elusive, not deceptive!”
04-12-09, 08:45 PM
#11
Stay tuned...
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I have 2 probes mounted on the turbo manifold (pre turbo).
Last night at cruise (no boost) I saw a max egt of 1000 deg F and that is with an AF of 14-15.5's for about 1 min of cruising at that air fuel.
This is on E85. I'll post some boost data soon.
Anthony
Last night at cruise (no boost) I saw a max egt of 1000 deg F and that is with an AF of 14-15.5's for about 1 min of cruising at that air fuel.
This is on E85. I'll post some boost data soon.
Anthony
04-13-09, 12:18 AM
#13
Stay tuned...
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I am thinking the numbers are off, I posted to get some opinions so thanks for responding. I am not sure what advance but I'll look t the datalog soon, it has to be in the 30-35 deg area and split is either 10 or 12 since I am in vacuum. The rpm was around 4000-4200. Do you really think that's too cold?
04-13-09, 11:31 AM
#14
I am thinking the numbers are off, I posted to get some opinions so thanks for responding. I am not sure what advance but I'll look t the datalog soon, it has to be in the 30-35 deg area and split is either 10 or 12 since I am in vacuum. The rpm was around 4000-4200. Do you really think that's too cold?
07-22-09, 10:43 PM
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AnthonyNYC
i was at California speedway last Saturday.at the big end my egt's were 1650 front and 1600 rear rotor.it was 100+ degrees outside.the boost was at 19 psi.E85 is the only fuel i have monitored my egt's.what kind of egt's would you expect to see on gas at 19-20 pounds of boost?my egt probes are about 2 inches from the exhaust port
Last edited by mazda rx2 rotary; 07-22-09 at 10:46 PM.
07-23-09, 01:33 AM
#17
Stay tuned...
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i was at California speedway last Saturday.at the big end my egt's were 1650 front and 1600 rear rotor.it was 100+ degrees outside.the boost was at 19 psi.E85 is the only fuel i have monitored my egt's.what kind of egt's would you expect to see on gas at 19-20 pounds of boost?my egt probes are about 2 inches from the exhaust port
Anthony
08-01-09, 09:01 PM
#19
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cooler EGT'S
went to california speedway today gave the car some timimg,pulled some fuel.when i went through the lights my EGT'S were at 1500 degrees.the car went its best pass to date with these EGT'S.it went 1.41 60 ft 6.60 @ 103 1/8 mile,10.44 @ 126 1/4 mile.27 degrees total advance at 8000 rpm. i think one or two more degrees with E85 would still be safe.
