RE: RE: Turning over 5500 rpm's, unbelievable

From: Mooberry, J (
Date: Thu Aug 19 1999 - 16:21:23 EDT

thx gary

> -----Original Message-----
> From: Gary Shook []
> Sent: Thursday, August 19, 1999 3:51 PM
> To:
> Subject: Re: DML: RE: Turning over 5500 rpm's, unbelievable
> >on that note could somebody tell me exactly what detonation is? thx.
> -jay
> Detonation is just like it sounds, the air-fuel mixture literally EXPLODES
> in the cylinder, causing an extreme rise in temperature and pressure... in
> normal operation of an internal combustion engine, the mixture burns in a
> controlled fashion, with a flame front travelling across the cylinder.
> Minor detonation is known as pinging, and occurs when most of the mixture
> has already burned, or when two parts of the flame front collide. Another
> term you will hear is preignition, which is when some "hot spot" in the
> combustion chamber ignites the mixture before the spark plug fires, which
> can lead to detonation as well.
> Gary Shook
> Penrose, CO

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