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copbait73 copbait73 is offline
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Join Date: Nov 2003
Location: Chesterfield IN
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Originally Posted by DonE View Post
Once you've chosen your turbo, IC and twin plug, there are only two things you can manage to reduce detonation: timing and fuel. In my opinion, adding fuel to cool the charge to reduce detonation only works to a certain point. I've seen motors run at a very low AFR that successfully eliminates detonation only to wash the cylinders of oil and severely accelerate cylinder/ring wear (as well as dilute the engine's oil supply) and trash your valves. Being able to properly tune a modified, air-cooled, 30 year old turbo motor is kind of an art. For my motor, my lowest AFR is 11.8 and timing at .8 bar, 6000 rpm is 18 degrees.
Well just to stur the pot.........here goes. You all ready have a killer engine but you can cool the charge AND cool the flame with water/alcohol injection. That is a third option. W/A injection is more than intercooling. Wow, now I've asked for it.
Old 03-09-2008, 07:52 PM
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