<VV> What is squish?

[Matt Nall]

To add to what mark wrote.....which by the way is "Compression ratio".......


"Squish"  in a Corvair head with the STEP  in it...as do most  engines  versus an "open Chamber" [ in our case  Smog heads with domed pistons  and some early low hp engines ]


Is the distance between the "step"  and the top of the piston....... factory is usually approx. 0.080"


By  decreasing this to approx 0.040"   you  get less pinging......yet have higher compression!  win win!


Matt Nall
Charleston, Oregon
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