List,
I recently installed an electric fan and removed the mechanical fan on my TR
4A. At the same time I re-installed the shroud which had been removed
several years ago. I know that several other listers have done this on their
3's and 4's and reported great results. Here is my experience since
installing the system two weeks ago.
According to the temperature gauge the car is running hotter when cruising
(needle is higher on the gauge) with the electric fan than it did with the
mechanical fan. The engine thermostat is a 160 degree unit and I have set
the fan to come on at about 170 degrees according to a thermometer I placed
in the system (with the cap off) when I set up the adjustable thermostatic
switch. I don't want the fan to run when I am running at speed and it
doesn't seem to be coming on when cruising since it only turns on shortly
after stopping for traffic. No overheating when running along at speed or
when stopped, just higher reading on the gauge. TR 4A gauges do not have #'s
just a small red area to indicate too hot. Previously I did come close to
overheating when in excessive stop and go traffic so there does appear to be
an improvement in traffic situations.
While I am curious about the reason for it seeming to run hotter, the
problem that has developed is excessive underhood temperatures in general.
When I am stopped in traffic for more than just a few minutes I assume that
I am overheating the gas in the carbs since I get a lot of stumbling when
trying to accelerate to the point of total power loss. This occurs at about
2000 to 3000 RPM and can last for awhile until the gas is cooled again by
the movement of the car.
Has anyone else experienced what I am experiencing?
By the way it doesn't have anything to do with the water pump since it did
this before and after I replaced the pump which failed on the way to the TRF
Summer Party. Another story to tell.
Thanks to Charles and John and to Bob Hoke with his able TRF Crew who had a
pump and a pulley ready when I got there, Fred Thomas who gave some good
advice to install the pulley before installing the pump, (it was better
advise after we listened to it !) and all of the others that helped me after
I arrived at TRF on the Big Red Truck. A word of caution is due here, check
the clearance between the pulley and the pump castings as some of the
aftermarket castings interfere with the pulley. We all knew about the
problem but didn't remember until we had it installed the second time. After
the third installation it worked great.
Regards,
Jerry Van Vlack
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