>>Detonation is caused by two things.
>>
>>1) Increase cylinder pressures. Which can be caused by
>>either forced induction or higher compression pistons or
>>both.
>>
>>2) Gasoline that burns too fast and lights to easily. Race
>>fuel is harder to light off, and burns slower. Cheap gas
>>burns easier.
>
>Don't forget temperature. That should be #3 on the list.
>Timing retard, intercooler, good cooling system, and
>properly sized turbo keep peak temps away from the
>detonation point.
>
>Corbin
>
>'95 ESI-T
>HRC+FMIC+ETC...
>
>


That begs the question what is a properly sized turbo? The unibody record is held by a Neon driven by Mike Crawford. http://www.nhraimport.com/2001/events/records.html Mikes car uses a T3/T4, that his competitors and conventional wisdom all said is too small. So sizing of turbos is not an exact science either.

Gary

PS Mike Runs 13 to 1

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