Date: Thu, 22 Apr 2004 11:02:20 -0400
Reply-To: ROBERT DONALDS <donalds1@VERIZON.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: ROBERT DONALDS <donalds1@VERIZON.NET>
Subject: Re: Oil cooler
Content-Type: text/plain; charset="iso-8859-1"
Skip and fellow vanagon types
The problem with the removal of the stock cooler is that you can conceivably
cook the engine in some conditions
first if the you pull off the highway with the engine at full oil temp with
the heads screaming hot. If you then are sitting in stop and go traffic the
cooling fan is not spinning fast enough to cool the heads and with no cooler
in the fans air stream the engine oil will continue to absorb heat the oil
temp can continue to climb. The remote cooler can't dissipate enough heat
fast enough because the oil pump does not have the volume at idle or low
speeds to circulate the oil to and from the remote cooler.
In my days at the race track I've seen air-cooled engines reduced to
junk just by driving them at a slow speed back to the trailer after a 15 lap
race this short trip pinned the head and oil temp gauges. The remote cooler
and all the scoops in the world did not prevent allot of damage. The sad
part was the we did not think anything of it until the next race when the
engine was way down on power and and was not the least bit competitive. Yes
the engine ran it had good oil pressure and compression but it needed to be
rebuilt restore power. This is the way the air-cooled engines degrade over
time unlike the water cooled engine that dumps its coolant at the first trip
out of its narrow band of survivable temp range.
The top hole is in for oil flow from the cooler
give the engine a cool down period before getting off the highway slow down
and let the engine loose some heat
good luck
going faster miles an hour with the radio on
I remain
Bob Donalds
http://www.bostonengine.com
----- Original Message -----
From: "David and Shirin" <daveshirin@ENERGYUNITED.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, April 22, 2004 7:41 AM
Subject: Re: Oil cooler
I have a 1982 aircooled westy and have installed a huge oil cooler from an
RX7 above the tranny with four4 1/8 computer fans blowing across it. If
your farmiliar with the Rx7 cooler you know how huge it is. It has a built
in thermostat that opens at about 180 deg. I was wondering if I should
remove my stock cooler and just block off the hole in the engine tin
providing more air to cylinders 3 and 4. What is the benifit of the keeping
the stock cooler in place? I have more than enough reserve cooling capacity
now.
David
1982 aircooled
Date: Wed, 21 Apr 2004 19:48:43 -0400
From: ROBERT DONALDS <donalds1@VERIZON.NET>
Subject: Re: Oil cooler
DON'T REMOVE THE STOCK COOLER
use the oil filter adapter from bus boys and get the oil stat while your at
it. I have many engine out there right now that have there set up and are
very pleased. The oil cooler is best placed above the trany to prevent road
damage and this location provide ample air circulation to keep the oil temps
at 180f on a hot summer day.
Bob Donalds
http://www.bostonengine.com
----- Original Message -----
From: "Skip Emmert-Keaton" <skip@SKIPEMMERT.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, April 21, 2004 6:41 PM
Subject: Oil cooler
> I'm adding an oil cooler to my 1980 air-cooled Westy and want to add a
> thermostat upstream of the cooler. I've removed the stock cooler and run
> lines from an adapter there. Does anyone know whether the top or bottom
> hole is oil out?
>
> Thanks for the help,
> Skip
>
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