906 head porting
I had my first set of heads done with these templates and they leaked in 5 out of 8 cylinders. They had to be epoxied. I had so much money into those heads. What a waste.
Be weary of those templates.
???Which templates were you using???I had used those on 906,452&346's w/o
ever being close to Breaking thru'.I broke thru' an Int.bowl in one 906 casting,but it was
the victim of extreme core shift,and I was working it for O/S valves.5 of 8 must be the worst
pair of castings ever.The real danger zone is raising the exh. roof,way too easy to find water
there,which sucks because the port really responds to that.But that's not part of the tem-
plate job so....
There is a sense of pride in making those old iron heads flow & go,and I love the
sleeper vibe,so I'm partial to them at heart.But unless that or practical considerations such
as piston fit on an eng. that has been built already,there is much to be gained by going to
fast-burn chambers and port flow close to a thinned out ported OE casting,w/o the worry.
