Tim;
Thanks for the story and the excellent article on the air dam.
I was extremely uncomfortable running my motor with the temp gauge in
the upper reaches of its travel. I have driven the car at this point a
total of approximately 50 miles. For about 25 of these miles I ran with
the thermostat removed and the thermostat by-pass hose removed. In that
configuration the motor never ran above 170 deg.
In ignorance, I thought all I had to do was replace the thermostat to
get the temp back up to 190 or so. Thanks to the reply from Theo Smit, I
now understand the function of that by-pass hose. It seem to me that the
motor may have been responding more to the removal of the thermostat
than the removal of the by-pass hose. Perhaps a bad thermostat, although
I started with a 180, replaced it with a 160, and got no change until I
removed it completely. So TWO bad thermostats? Maybe.
But it is encouraging that the motor will run at 170, and that there is
no serious internal reason (like excessive heat from too close
tolerances or some other mysterious gremlin). Fine tuning the system
should get me into a reasonable operating temp range.
Next step will have to be replacing the bypass hose and running a/
without the thermostat to see what happens, b/ running with a new 180
deg thermostat, and if that doesn't work, c/ perhaps removing the
by-pass hose again and installing one of those trick Stewart
high-performance t-stats with the by-pass holes in it.
I will continue to provide up-dates. Thanks to all for the help and
education!
Cheers,
Dave Munroe
-----Original Message-----
From: Ronak, TP (Timothy) [mailto:Timothy.Ronak@AkzoNobel.com]
Sent: July 16, 2004 3:03 AM
To: 'dave@munroe.ca'
Cc: Tiger News Group List (E-mail)
Subject: Engine temp
Dave,
My engine ran at 190-220 (In hot weather 90+) in 75 degree it ran at
180-200
without ever boiling over with a stock rad, Derale 15" Fan and Mobil One
oil. I thought as the engine 'loosened' up it would drop temp. NOPE!!!
Now I
have a cold motor piston slapper at 2000 miles ... could be many reasons
like the initial build was too large on piston to wall clearance. No
smoke
and excellent power still but I am going to pull it apart for
preventative
reasons. I believe the excessive temp may have led to some premature
piston
scuffing. I have now acquired one of Dale A's aluminum rads and the
Edelbrock water pump which will go on. It is a 3 pass design and I have
total confidence that it will completely eliminate any cooling issues.
If you want my 2 cents go get a decent Rad 210-220 is TOO HOT!
Best Regards,
Tim Ronak
Business Development Manager
Akzo Nobel Coatings
23961 Via El Rocio
Mission Viejo, CA 92691
Off: (949) 305-5393
Fx: (425) 955-6268
Cell: (949) 289-3357
email: timothy.ronak@akzonobel.com
VM: (800) 234-6747 ext. 2257#
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