Reply to "Measuring Aircooled VW Valves"

edsnovaBaltimore - BCW 52 MG TD Supporting Member

By my recollection, the Panchitos are made for small displacement engines—that's why they're named that. Downs claims he has flow numbers in the ported 044 range but intake velocity figures that are much better. That makes the heads "snappy" on milder, smaller builds. Low and mid torque, no soggy bottom AND very good top end power.

Again, according to Pat and Pat's dynos.

If he's right (and I have no cause to doubt him) then Panchitos are the best bet for anyone building a street engine from 1776 to 2332.

A guy making a stocker or very mild "high miler" build could probably do better with smaller heads, yeah.

And of course race guys may want more port volume to make power at higher rpm.

But for us—guys driving engines that peak between say 5500 and 6500: Panchitos.

3/25/194:42 PM

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