Moparmal said

CO-incidence or???

I spent three hours last night researching the same question!

MopeKid - pretty close - but what you describe here -



is actually SQUISH.

Quench is the "dampening effect" created by the surface area of the squish pads after detonation.

Here's what I found....I highly recommend this article - easy to read and provides a great summary..not completely but close (they actually get the terms wrong as well!!)....:-D

..and in the interests of learning I also recommend getting over the fact its a Cheb magazine..... :read2:

http://www.chevyhiperformance.com/t.../94138_piston_head_clearance_guide/index.html

Theres also this - simulating the difference between a broad squish area and a compact one




and lastly :

Click to expand...