[T3] type 4 2000cc oil pressure and overheating problem

Keith Park topnotch at nycap.rr.com
Sat Dec 10 12:34:40 PST 2011

A lot of strange things happen aerodynamically, and yea, I don't know what
is really happening with the cooling air but my engine wasn't getting
enough.  We really tried A LOT of stuff including a complete tear down,
And there are A LOT of people out there that don't know what they are
talking about, some of them are considered "experts" too...   I found
learning the stuff myself was the best way to really understand what was
going on, I just wish I had a wind tunnel to run it in!


Top Notch Restorations
topnotch at nycap.rr.com 
71 Squareback "Hothe"
65 Notchback "El Baja Rojo"
65 Squareback "Eggcrate"
87 golf "Winterat"
93 RX7 "Redstur"

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Jim Adney
Sent: Saturday, December 10, 2011 9:42 AM
To: type3 at vwtype3.org
Subject: Re: [T3] type 4 2000cc oil pressure and overheating problem

On 9 Dec 2011 at 23:41, Keith Park wrote:

> The final conclusion was that the T3 engine is the ONLY one that uses a 2
> stage cooling fan, and that's because you don't get forced induction in a
> Square or Fasty and the single stage fan on the T4 will not "pull" the air
> in properly, my heads were always cool but the Oil was the problem under
> mixture I tried.

I'm not convinced that you've pinned down your problem. I understand 
that you've eliminated some possibilities, but the fact that none of 
us can think of any other possibilities doesn't mean that they aren't 
out there.

Also, I don't understand what it is about the Type 4 intake that 
provides "forced induction." It's been years since I dealt with one, 
and this is not an aspect I paid any attention to, but the Type 4 
squareback louvers and ducting strike me as pretty much the same as 
those in the Type 3 squareback.

The notch ducting is a lot more convoluted. Are you under the 
impression that the area behind the notch rear window is a high 
pressure region? Is this true? I wouldn't expect this, but I don't 
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA

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