KR and running e85

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Jun 17, 2012 | 11:11 PM

03LQ9

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KR and running e85

Hi guys, I'm getting knock retard blips running a tad over 5psi on my 6.0l LQ9, the timing is at 15* when its at 5 psi around 3000 rpm. The turbo is a ebay gt45 and with no intercooler the intake temps are around 120F after a 0-70mph pull. Does this sound like false knock ? e85 should handle this no problem I would think? I would like to get 10 psi and keep the 15* of timing.

Thanks!

Jun 17, 2012 | 11:30 PM

a4ls2goat

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sounds like you need a intercooler if you wana keep those pistons in 1 piece

Jun 18, 2012 | 07:10 AM

hellbents10

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From: Spring Lake, MI

Yes it does sound like false knock, you are not asking to much of that fuel.

Jun 18, 2012 | 10:16 AM

oange ss

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I'm running 17*@12-14lbs with a TC78 and E85, IAT 112-118 *F, no knock

Jun 18, 2012 | 04:03 PM

Ryans99ls1

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From: OH & MI

im at 18-19* 12lbs spike settling 9 by 6000rpm. not sure on intake temps and im on stock shortblock ls1. you should be able to get more out that lq4

Jun 18, 2012 | 04:51 PM

03LQ9

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My buddy is running 5.5 psi in his 5.3 that has a small supercharger with IAT's in the 190+ range and 20* of timing and 92 octane it has no KR. Thats why this KR showing up on mine is kind of weird to me ?

Jun 19, 2012 | 04:20 AM

skinnies

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From: KS

Sounds like false knock or another issue going on, check the plugs to make sure you don't have some other issue.

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Jun 19, 2012 | 11:30 AM

03LQ9

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I'm running the AC delco plug thats equal to the autolite 103 which I believe is stock heat range ? I was told they were good up to around 500whp and e85. I wonder if that is an issue ? I pulled the no. 7 plug yesterday and it just looked like a new plug, no coloring, there is around 600 miles on it. Sometimes the KR starts at 30% throttle with no boost then tappers off throughout the run after boost hits full on.