<VV> Three Angle Valve Grind

[Jim Burkhard]

In a word, YES! Flow losses (especially on the intake where 
there's little pressure difference to fill the cylinders) 
are bad bad bad!

Jim Burkhard

> Bob and all,
>    Maybe I'm behind here. I've been reading (books and internet). I assumed
> one 45 degree grind on the seat was normal. Is the three angle, 60, 45, 30 a
> standard practice at machine shops now? Am I just catching up to whats
> normal acceptable practice?
> 
> Ron Guy

>