Re[2]: more fumes; rear slots

[Toby Erkson <Toby_Erkson@ccm2.hf.intel.com>]

---------------------------- Forwarded with Changes ---------------------------
From: Toby Erkson at HFCCM5
Date: 2/21/97 8:18AM
To: type3@rhett.enet.dec.com at SMTPGATE
Subject: Re[2]: more fumes; rear slots
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Those rear slots are part of the internal fresh air ventilation system.  
Air flows into the car from the front and exits *out* of these slots; you 
will notice that there are slots in roughly the same location inside the 
car.  What Jim said earlier about the Bernoulli principle applies here, 
also.  Outside air flowing past the slots creates a low pressure area.  The 
cabin pressure is higher due to internal air flow so cabin air is sucked 
through the slots to the outside.  I had an exhaust leak once so as a test 
I had taped these up but I still experienced the leak.

Exhaust fumes will be drawn in from bad: lower hatch seal; deck lid seal; 
rear window seal (? I wouldn't have believed it until it was mentioned!); 
heat exchanger/muffler seal.
     Toby Erkson
     air_cooled_nut@pobox.com
     '72 VW Squareback 1.6L modified to 2.0L
     '75 Porsche 914 stock 1.8L

______________________________ Reply Separator _________________________________
Subject: re: more fumes
Author:  type-3-errors@umich.edu at SMTPGATE
Date:    2/20/97 7:09 AM


...
What about the vents along the side right in front of the rear hatch?
 They have
openings inside the car right by the rear window.  Would these end
up sucking in
fumes?  It looks like they are designed to push air onto the inside
of the rear
hatch window, but we're not sure.  I was thinking of temporarily duct
taping the
inside holes up to see if that made any difference.  Any thougts on that?

...
Dave