10V T pics-detonation

Michael Gough mdg3369 at mac.com
Wed Sep 26 16:53:43 EDT 2001

Jorgen wrote:

> While I am guessing:
> I don't know the AFR where the 10vt are most likely to detonate, this AFR
> are not the same for all engines. But I think that everyone will agree that
> all engines detonate easier at 13:1AFR then at 16:1AFR. With my latest plug
> cuts in mind I guess that 13:1 to 13.5:1AFR is very dangerous, it is very
> easy to end up in that range since the car will feel very strong at these
> AFRs.

I don't agree! You have it backward, a 16:1 AFR is MUCH leaner than 13:1,
and for the most part, a richer mixture gives a cooler combustion chamber
and less potential for detonation. AFR of 16:1 is WAAAYYY lean, Lambda 1 is
14.7:1, and most turbo engines run 12-13:1 in full boost.

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