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All this talk about polishing got my mind thinking of speed, of course... Anyway, it has been found that in a port and polish of the heads, that polishing the intake ports actually detracts from performance. The reason is theÃðJŠ ication and atomization of the fuel is better achieved with a slightly rough surface. On the other hand, the exhaust port needs to be 'baby butt' smooth, as that helps with the exhaust scavenging that the system needs. Remember, on a high hp engine, most run extractor exhaust and scavenging can be a problem. I have seen hp results on a 2.0L engine that had a port, then a port and polish on the same heads. The gain of 15 hp with the port and no polish is nothing to be scoffed at, and the added benefit is it costs less to port and not polish! Vader 64 Menace ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe