hafftrak wrote:If you want to go all out with the Zetec, you need to be talking to the guys across the pond.
It's considered a lake but thanks
Port/polish - do yourself. Granted you may not get the repeatability of CNC or the fancy mean nothing numbers that go with it, but you get experience and can visually see what the changes are. Basic rule for us is don't touch the port floor and don't go too big (slows the air too much). Larger diameter valve seat and work the throats to match. Don't try to gasket match or you'll go too big.
Balance/lighten - Sure any AERA machine shop can handle that, or knows where to send it to be done. I know Engelke in Lester Prairie could probably handle the job. For you city kids I think Headwerks comes highly recommended, seem to hear that name thrown around a lot.
I wouldn't take too much weight out of the rotating assy. though. It's part of the reason we have TQ (other is our extreme rod angle). Sure it'll RPM up faster, but you'll also be shifting more. Short track I assume you want to shift as little as possible.
Good set of cams will go a long ways on an otherwise stock engine. Add to that shaving the head and upping the compression with fuel to match and you get a nice little package.
Zetec head you can take roughly 0.060" off with little issue. All out race cam and I'd say 0.040" would be the limit, duration may catch up to you.
I'm running the SVT head and it's shaved ~0.050" and I have a bit more I could go if/when the time comes (but I machined my chambers out a bit too, ~52cc total each).
