> As some of you already know, I am in the middle of a restoration project
> on my 58 TR3A TS27093, and my question is,
> after talking to a few folks about my plan to leave the stub shaft and 4
> blade fan off when I install the freshly rebuilt motor.
Just to repeat a warning, the factory fan apparently served as a harmonic
vibration dampener. The first worrisome harmonic doesn't appear until
around 5200 rpm (possibly as early as 5000 rpm), but reportedly can lead to
a broken crankshaft if you operate for any length of time in that region.
> Will the electric fan (placed in front of the radiator with the nose
> shroud) be sufficient to keep the motor cool?
I opted for the fan mounted behind the radiator, which I believe improves
the "ram air" effect at speed (where the fan is useless anyway). Works well
for me.
Also keep in mind that the stock generator is just barely (if that) able to
keep up with the load of the original electrical system. Adding a heavy
current draw like a radiator fan may cause problems, especially if you try
to run the headlights at the same time.
Fan size/capacity is important too. I'd suggest consulting with your fan
maker, to see if the fan you have is adequate to cool a 2 liter engine.
Hayden (for example) recommends their 12" fan as a minimum for stand-alone
cooling :
http://www.haydenauto.com/assets/2003Haydencat.pdf
> I am also told that there is a 6 blade impellor that I should consider
> for the water pump. (by the way where do I get it?)
Ken Gillanders
British Frame and Engine
4831 N. Ryland Ave
Temple City, CA 91780
(626) 443-0939
bfeken@copper.net
Good luck
Randall
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