mark kibort

if you do the claying of the piston valve reliefs with a mockup of the engine, i bet the valves dont even nick the silly puddy. the main concern with the shaving of the heads is how i effects compression ratios.
1mm shaving would raise the compression ratio near 1 point (thats near 7ccs)

all you really need to do, is take a box end wrench, and lever down the valves and measure how far they go down before they hit the pistons. (clay is to see where they hit too) if that number is .3" or greater, you have nothing to worry about .

mk

mark kibort

this is what im referring to. slow motion 1000fps video of what happens in teh combustion chamber.

http://gizmodo.com/gadgets/fourstrok...?autoplay=true

Bill Ball

It's not just "sitting" there...it's impaled there!

UKKid35

Billiant video, but edited so you only see three out of four strokes for no apparent reason

UKKid35

Was I the only one who imagined you standing on your head and welding the underside of your car?

Daniel Dudley

Nice visual.

When this head is done, Will they bake it in an oven for a number of hours to stress relieve it ? I think it would need something along those lines.

Shark Attack

I think he shares my signature quote

perrys4

If you don't have the skills or know how you have to pay someone who does.....Yep, thats me with this car.

SteveG

I was sure he was getting a plate in his head, you know, to keep his brain from falling out.