plug readings vs electronics

[Jason Mauldin]

ummm, why would gases cool off while they're still
being compressed?  There wouldn't be any significant
cooling until you have movement of the gases across a
surface.  

I've witnessed this firsthand.  I logged a knocksum of
about 20 and watched my EGT's climb. 

If there's no association please explain.




--- Phil Hunter <ilphayunterhay at yahoo.com> wrote:
> Ricky & Jason,
> 
> please enlighten me how EGT readings can go up due
> to
> detonation, when inside the cylinder the shock wave
> is scrubbing away the boundary layer and exposing
> the
> relatively cool pistons and cylinder head directly
> to the combustion gases? Wouldn't the gases cool
> off,
> or is there some new law of thermodynamics I haven't
> heard of?
> 
> phil
> 
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