Bypassing the blowby gas system to a catch can?

[John Larson]

Nevermind the intake, the vacuum leak will be at the crankcase. You're
fighting 30 years of design refinement.   John
----- Original Message ----- 
From: "Will Ng" <wng-audi at verizon.net>
To: "John Larson" <j.d.larson at verizon.net>; <quattro at audifans.com>
Sent: Tuesday, June 01, 2004 9:09 PM
Subject: Re: Bypassing the blowby gas system to a catch can?


> At 06:55 PM 6/1/2004 -0700, John Larson wrote:
> >Will asked:  "Would removing the blow by from the intake cause running
> >problems? My
> >concern is whether the mixture ratio be altered since it'll be only fresh
> >air passing through the intake."
> >What are you gonna do about the big vacuum leak you create when you open
the
> >crankcase vent to the air?  If the car stumbles or even dies with the oil
> >cap off, it's REALLY gonna be bad with a perpetual 1" hole in the case.
> >John
>
> That's why I plan to plug up the port where the blow by gases are plumbed
to.
> So there won't be a vacuum leak. But I need to know if a permanent lean
> condition will result.
>
> Will
>
>
>
>