e85 turbo guys, need help.
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e85 turbo guys, need help.
so we tried tunning for e85 and sd today. got the fueling about dialed in, a/f is about 11.5 or so, but now it's blowing out spark. I'm running tr6's gapped to .032. what are you guys running for plugs and gaps?
Last edited by needaz28; 11-15-2009 at 10:30 PM.
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What the last guy said except 11.1 is way too LEAN for E85, go look up the stochiometic burn rate the Ethanol, or E85 as you need to burn it around 7:1 or something ... 11:1 your not spraying nearly enough in there! and if your boosted, hell I run about an .018 plug gap to make sure that sob fires.
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we had it at about 16* timing. i'm going to get some new tr6's and gap them way down, I was thinking .020-.024 gap. I'll try .02 and see what happens. I'm loosing fuel presure right now. I have 2 255 pumps, I have a 3rd pump here and I'm going to start on my custom top hat monday. (I'm a aerospace machinist) I'll once we get the spark problem figured out I'll talk to my tuner and get it down to where it need to be.
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Excuse my ignorance,
but if 9.7AFR = EQ1 for E85 then high 10/low 11 would be lean @ WOT.
In the flex fuel OS' EQ1 moves with Ethanol%
but PE EQ stays the same.
Example:
0% Ethanol EQ1=14.63AFR
0% Ethanol PE EQ 1.17=12.5AFR
E85 EQ1=9.7AFR
E85 PE EQ1.17=8.3AFR
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With E85 EQ1 being 9.7AFR?
Excuse my ignorance,
but if 9.7AFR = EQ1 for E85 then high 10/low 11 would be lean @ WOT.
In the flex fuel OS' EQ1 moves with Ethanol%
but PE EQ stays the same.
Example:
0% Ethanol EQ1=14.63AFR
0% Ethanol PE EQ 1.17=12.5AFR
E85 EQ1=9.7AFR
E85 PE EQ1.17=8.3AFR
Excuse my ignorance,
but if 9.7AFR = EQ1 for E85 then high 10/low 11 would be lean @ WOT.
In the flex fuel OS' EQ1 moves with Ethanol%
but PE EQ stays the same.
Example:
0% Ethanol EQ1=14.63AFR
0% Ethanol PE EQ 1.17=12.5AFR
E85 EQ1=9.7AFR
E85 PE EQ1.17=8.3AFR
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ok,so i will gap them to .026 then I'll make sure I'm seeing at least 11.0 when boost hits. i guess nothing really changes, because when we tuned before we tuned it to 10.5-11.0 when boost hit.
thanks
thanks
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I'm running 10psi on a stock bottome end with a 76mm turbo. Might put the bitch on kill here soon as I'm getting closer to putting a fresh motor in it. I'm going to try a jy 5.3 with a zo6 cam/springs/comp pushrods and 317 heads. Run that while I build my 400+ cube engine.
The car has gone 125 on a slipping clutch and cly 7 down around 100psi. The other 7 clys are at 150 psi. 9" is going in by new years. I think I can get a 5.3 to low 10's on "pump" gas. (E85)
The car has gone 125 on a slipping clutch and cly 7 down around 100psi. The other 7 clys are at 150 psi. 9" is going in by new years. I think I can get a 5.3 to low 10's on "pump" gas. (E85)