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 |
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 |
Originally Posted by classicauto
(Post 8626603)
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 |
Originally Posted by Viking War Hammer
(Post 8626671)
e85 ? :)
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Originally Posted by classicauto
(Post 8626709)
nvm :(
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Sorry 520 C not F
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1500 F at cruise
Probe is post turbo ~2" from turbo outlet. |
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 http://i287.photobucket.com/albums/l...5-2586_IMG.jpg |
^^^ So are you getting those exhaust temps on gasoline or are you running the engine on E-85??
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Originally Posted by moremazda
(Post 8674522)
^^^ So are you getting those exhaust temps on gasoline or are you running the engine on E-85??
Our nearest E-85 station is 100 miles away. Barry |
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 |
Those are some cool temps! Roughly what RPM and advance?
Nice stuff anthony :) |
Originally Posted by classicauto
(Post 9121900)
Those are some cool temps! Roughly what RPM and advance?
Nice stuff anthony :) |
Originally Posted by AnthonyNYC
(Post 9122415)
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?
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Does anyone have any data of EGTs on E85 under boost, can you specify how much boost to please?
Thanks!!! Anthony |
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
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Originally Posted by mazda rx2 rotary
(Post 9376179)
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 |
Originally Posted by AnthonyNYC
(Post 9122415)
and split is either 10 or 12 since I am in vacuum.
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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.
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