Thread: 302 Clevor build?

Tweet

Originally Posted by Dano61

3).Also I'm working on the heads. I tore them down and I'm going to rebuild them. Now i know a valve job is always a good idea and i also hear a lot about port and polishing the heads . Can someone explain the process and if and how much it would help?

Porting and polishing is a term left over from the days of flatheads. Most of us don't use it anymore, using only the words ported or porting. Reason is, current thinking is to leave the intakes rough so that fuel drop-out will be picked back up with the wind going over the rough surface, whereas if the surface were smooth (polished), the fuel would remain out of suspension and be gulped in as soon as there was sufficient airspeed, loading the cylinder with unburnable fuel. Now, on the other hand, current thinking has the exhaust ports polished smooth.

Having the knowledge to port heads takes a long time to learn. You don't just pick up a rotary grinder and start hogging out a port without knowing if you are helping or hurting. (And it's much easier to hurt than it is to help).

By the way, there is still an intake manifold available for the Clevor....
http://www.summitracing.com/parts/EDL-7129/

As far as trying to whip this guy just because he's a blowhard, that's kinda silly in my opinion. You're gonna be encountering these shmoes throughout your lifetime. Are you gonna let all of 'em get to you like this? If so, you're in for a tough ride through life.