Date: Fri, 28 Jun 2002 13:39:37 -0400
Reply-To: Jay L Snyder <Jay.L.Snyder@USA.DUPONT.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jay L Snyder <Jay.L.Snyder@USA.DUPONT.COM>
Subject: Re: Radiator Design
Content-Type: text/plain; charset=us-ascii
Well, there must be coolant passing through the radiator at idle, or you're
fan would never come on when you are stuck sitting in traffic. The fact
that the radiator temp goes up enough at idle to kick on the fan tells me
hot coolant is being moved through the radiator. The radiator is not
capable of producing heat. I always thought it would be nice to have a
temp gauge reading off of the radiator in addition to the stock gauge that
reads at the engine. A fast-idle before shutdown would be more efficient
and simply driving a few miles off of the interstate would accomplish this.
Pulling of the interstate into a rest area for gas might call for an idle
before shutdown. Can't hurt.
If indeed the radiator is a double core, cross-flow design as Ed McLean
says, it must fill from the bottom, to the left, back across to the right
and then down at the right side. The right hand (passenger's side) must be
a double vertical tank, providing the supply to the left and the outlet
when it returns to the right?
Jay
Tim Hannink <tjhannink@EARTHLINK.NET>@gerry.vanagon.com> on 06/28/2002
01:25:24 PM
Please respond to Tim Hannink <tjhannink@EARTHLINK.NET>
Sent by: Vanagon Mailing List <vanagon@gerry.vanagon.com>
To: vanagon@GERRY.VANAGON.COM
cc:
Subject: Re: Radiator Design
Coolant flows through the engine anytime it is running, it might not be
passing through the radiator at idle, but through the bypass hoses and
heater cores. It's my understanding that idling the motor after long runs
prevents hot spots from developing in the coolant passages in the heads and
boiling the coolant at that point.
Good luck,
Tim Hannink
Winter Park, Florida
Goldibox - 1987 Vanagon Camper, Wolfsburg Edition
http://home.earthlink.net/~tjhannink/
http://photos.yahoo.com/tjhannink Vanagon Album
http://groups.yahoo.com/group/wolfsburg_campers/
-----Original Message-----
From: Darren [SMTP:dfazio@BELLSOUTH.NET]
Sent: Friday, June 28, 2002 12:44 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Radiator Design
> Unfortunately the h20 pump does not generate enough pressure at idle
to get the coolant "over the top".
It was my understanding that the engine be allowed to idle for a minute
before shutting off after a long trip for cooling reasons. If no
coolant is flowing at idle then there is no reason to do this. Is this
necessary?
Darren