My motor on E85...
My motors always were more tolerant to detonation when I ran with blown headgaskets. They were always faster.
EvoM Guru
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Joined: Mar 2006
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From: Tri-Cities, WA // Portland, OR
Any further thoughts on the det? Maybe something to do with the blown HG? Maybe the "det" sound was really the sound of combustion gases blowing into the coolant passage(s)?
We put everything back together and cleaned the rest.
My motor had a leaking main seal and a leaking oil pan so oil was everywhere, all OEM never been off, at 'only' 62k.
However I put this car through hell and back so nothing like that really surprises me.
As far as the det, we'll see when I get it all back together. Not sure about if it was the sound of the gases blowing into the coolant passages, unless that also sounds like a bunch of ball bearings flying around in the engine bay as well.

btw, it looks like I killed yet another 6 speed. Drained it before removing and all the oil was burnt and black and tons of shavings came out. It was making a god awful noise before but we thought it was the clutch. Thankfully we are finally swapping my built 5 speed in.
This TRE 6speed lasted 32k miles. The OEM 6 speed melted 4th at 30k miles. I'm happy I am finally putting a real trans in the car.
Last edited by GST Motorsports; May 21, 2009 at 11:04 AM.



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