<VV> Crankcase Vent

[Bill & Chris Strickland]

> Not so cute on a hot day when that yellow smog comes out of the
> crankcase.  Even after being filtered, whatever seeps through the heater
> ducts is going to smell pretty bad.   Don't count on the orificed tube going
> to the crossover to handle all of it.
***** ***** *****

I have to fully agree with Smitty on this one -- somewhere along the 
line, maybe it was the "bean counters", GM failed to provide the Corvair 
with a Positive Crankcase Ventilation system that actually worked, then, 
or now.

A working PCV system will provide a "slight" negative pressure in the 
crankcase -- look at what Ford used to use to test PCV systems (a vacuum 
gauge - of sorts - on the valve cover). I dare say that if the Corvair 
had  actually had negative pressure in the crankcase, they wouldn't have 
gained their reputation for leaking fluids out of said crankcase, and 
thus, the stinky heaters, et al.  CO would still be a concern, of course 
(but they sell detectors for that these days).

Solutions to this dilemma can be as varied as the owners of Corvairs, 
but "stock" is not the solution.  Hi-pro racers like to see actual 
vacuum in the crankcase (header scavenging, etc), not "just" catch cans 
(likely required by rules).

mo,

Bill Strickland