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RE: Secondary oil cooler


Well, I took a look a t your "stats" and it's an impressive list of
parts.   It looks like you have a good combination that should provide
years of enjoyment.  I was particularly impressed with you mileage
figures.  Is this a daily driver?   What compression ratio and deck
height  are you running?   This engine is not that big and the stock oil
cooler should be adequate unless your compression ratio is too high and
causing higher than normal head temps.   I suggest that you check that
CR and if it's higher than 7.5:1, bring it down.  You will lose some HP
but you won't have all that plumbing to do or that cutting of bumpers.
The fact that you have a 5 speed should have no affect  on your engine
temps.  I think that your 5th gear is a bit taller than stock and that
might have you running a bit higher temps at speed.  But you are also
running tires that are not stock circumference, so that  would also
factor into the equation.  

It would not be time wasted if you spent a weekend driving around and
measruing your engine temps and cyl head temps so you can see exactly
where you are and have a baseline from which to base further changes.
Also, measure the ambient temperature and humidity, as well as you
elevation ( from sea level) and barometric pressure.  This is how the
pro's do it.

Doug, I think that the stock cooling system is deliberately over
built/engineered and can adequately handle much higher performance than
stock provided that CR's are kept in check for a daily driver.  This
would not apply to those interested in competitive racing or unreliable
daily transportation.

Jaime.
----------
From: 	Erkson, Toby[SMTP:toby.erkson@intel.com]
Sent: 	Monday, August 10, 1998 11:48 AM
To: 	"type3@vwtype3.org" 
Subject: 	RE: Secondary oil cooler

Yo, Jaime, check out my statistics page on my Squareback then you'll
know
why
I'm doing this, otherwise I totally agree with you  :)  <chime, new
mail>
Yes,
Doug is correct in that message he just posted.

As for Doug, duhh, I didn't even think about the bumper!  That would be
a
good
idea though the bumper would get hot and providing air into it wouldn't
be
that
difficult or an eye-sore.  You are correct, though, I don't have my
bumpers
on
and they won't be going on since I've had the fender dimples smoothed
over.

Thanks for the input!
   Toby Erkson
   air_cooled_nut@pobox.com  <-- Please use this address for email
   '72 VW Squareback 1.6L bored and stroked to 2.0L, Berg five-speed
   '75 Porsche 914 1.8L, ORPCA member
   Portland, Oregon, http://www.geocities.com/MotorCity/8501/

>-----Original Message-----
>>>This thread is addictive...what about making a long coil ala Porsche,
>and
>> having it inside the rear bumper with some sort of a small (but long)
>> air
>> scoop to bring air in there...but then again, now that I think
>> about
>> it I don't remember seeing bumpers on your car (saw the pics in your
>> website)...<<
>>
>If type 3's were designed with the same performance parameters as that
>of a Porsche, then the VW engineers would have designed a complimentary
>cooling system that worked within those parameters.  With a 
>vehicle that
>produces at best 1/3 bhp as that  of a Porsche 911, as an example,  the
>cooling system VW engineers designed is more than adequate.  Why would
>anyone think they can do it better; and, moreover, PROVE IT with any
>sort of empirical data??
>

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