I do disagree and if you actually look at an MB thermostat you'll see why.
When the thermostat opens it closes the loop passage in the block, without that
happening water doesn't take the path to the radiator, it follows the path of
least resistance through the block. I've driven an '81 300TD with the
thermostat out, it was fine for ~30 minutes from a cold start, then it would
overheat. Let it cool off an hour and it would overheat again in ~5 minutes
every single time.
New thermostat and the problem went away.
If you want to flush an MB cooling system without waiting for the thermostat
you have to make a piece to hold the thermostat open, gutting it doesn't do
anything. BTDT.
If you want you can come out here some time and we can pull a thermostat from
one of my cars and I'll show you. Thats why I said in my message that MB's
don't cool like other cars.
-Curt
Date: Tue, 17 Aug 2010 18:39:02 -0500 (GMT-05:00)
From: Robert Bigham <edward_baldh...@earthlink.net>
To: mercedes@okiebenz.com
Subject: [MBZ] Overheating - proven to be lack of waterpump output
Message-ID:
<6186523.1282088343022.javamail.r...@elwamui-royal.atl.sa.earthlink.net>
Content-Type: text/plain; charset=UTF-8
Hello
Thank you for your comment.
I neglected to say that the gutted thermostat was gutted and installed
after
the new thermostat, which was thought to be the cure of the problem
(everything else having been thought to be eliminated) did nothing that
anyone could tell.
New Wahlert thermostat installed, (opens at 90 deg C by test)has no
efffect on overheating that anyone can see.
Without doubt the path of coolant with thermostat installed and working
should be from the pump toward the back of the block, back to the front
through the head and block, and then out through the open thermostat
through the top hose to the radiator top tank.
Removal of the thermostat should not have a material effect on the path
coolant; otherwise running without thermostat would be engine death,
which it is not, as all know. Removal of thermostat generally results
in overcooling.
It is certain the top hose will discharge coolant if the water pump is
pumping, or I say so.
Do you agree or disagree? If you disagree, why?
Thanx RE Bigham, alter ego and enablere of Edward Baldhead
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