<VV> 1965-1967 110HP with a/c low compression engine

[Frank F Parker]

> is still  a squish area. In heads having a relatively large squish gap, the
> gasket step  can be reduced or elininated to decrease the gap. That apparently
> is what you  are remembering.
> Regards,
> Bob Helt

Research on others engines like the small block and the experience of many 
have shown the gap dimension is critical with 0.040 being the usual 
suggested distance. I have run on other than corvair a gap of 0.020 but it 
was a fairly low rpm turbo motor. As the gap gets more than 0.060, the
help that the reduced gap helps detonation resistance decreases and much 
more ends up as if it was still an open chamber design with no improvement
in detonation resistance.

regards,

frank parker