Reply-To: <steve@tsisp.com>
From: "Steve Brooks" <steve@tsisp.com>
To: "Fly Rotary \(E-mail\)" <flyrotary@lancaironline.net>
Subject: water temp sender
Date: Sun, 23 May 2004 07:43:47 -0400
Message-ID: <002601c440bb$364a0860$6400a8c0@WORKGROUP.local>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Importance: Normal

I now have another question.  Since I found out that I'm measuring water
temperature twice, and not measuring oil temperature at all, now I have
another issue.
I getting about a 20 degree difference between the two coolant temps.

My coolant temp gauge sender is mounted in a port that was in the back side
of the water pump housing.  As I recall, it's in the vicinity of the
thermostat somewhere.
The other temperature reading is from what I though was the oil temperature
port which is next to the oil pressure port, but turns out to be coolant.
If that is the right place to measure coolant, then I'm kind of happy (not
about being stupid about oil temp) that the coolant temperature is much
lower than I previously thought.

Also I wonder about why such a big difference ?  The only thing that I could
think of is that one is on the outlet side of the radiator, and the other is
on the hot side coming out of the engine before it goes to the radiator.
Since I have no clue about where the coolant comes from that I'm measuring
next to the oil pressure sender, I really don't know.

BTW My water temperature gauge is a VDO Vision series analog gauge, and the
oil temperature / pressure is a Aerospace logic digital display.  The Aero
Logic is suppose to be accurate to within 1 degree, so I know that
temperature is pretty accurate.  The analog gauge really doesn't say what
its' accuracy is, so I guess that you can only ASSUME it's correct.

So, where should I be measuring coolant temperature ?

Steve Brooks
Cozy MKIV N75CZ
Turbo Rotary