Lmao

I was at Summit today, I looked at heads to compare, I was surprised the CNC job on Dart, expected better.....

My AFR look amazing CNC chamber job....

First is my AFR...second is Dart..

[ATTACH=CONFIG]538061[/ATTACH]

[ATTACH=CONFIG]538062[/ATTACH]

There may be a reason for them leaving the ridges in there and maybe there isn't.

Can't always go by looks.

BTW: On one of my spacers I was getting some fuel distribution issues, that by having deeper cnc ridges vs polished, help'd out a lot. Couldn't believe it , but at the same time, I could. If you know what I mean.

Anyway, again, can be there for cost cutting reasons, or better performance reasons, or....doesn't influence anything.

You can only tell by strict testing.

http://33outlaw.zenfolio.com/img/s6/...97903857-3.jpg


I kinda like my heads a bit better yet.:cool-smiley-011:

Cheater. ... lol

Everything looks better with headlights on everyone knows that.....

True, I was always told the smoother the better in a chamber... I could be wrong..

Dan, I wanna see the backside of your heads... LOL

Remember everyone "ported and polished" intake runners. It turned out the fuel liked to stick to the runners. Leave them rougher, a little turbulence keeps it flowing instead of evaporating on the walls of the runners. Maybe they have a theory there....??

Once an atomized air/fuel mixture hits a smooth surface it will turn to liquid (droplets) again. Liquid does not burn as easily. The rough surface keeps the fuel atomized.

That being said mine are as smooth as a babys bottom.