[TR] Triumphs Digest, Vol 1, Issue 55

[AMfoto1 at aol.com]

Hi David, 
   I'd suggest not putting the oil cooler that far out in front of the 
radiator. It will mess with the air flow to the radiator too much. I agree, too, 
with Robert B., you'd be much better off configuring the elec. fan as a puller, 
behind the radiator. (When rigged as a pusher, it actually blocks quite a bit 
of airflow.) By rigging it instead as a puller, you will find you have another 
alternative location for the oil cooler, that makes for relatively pretty easy 
installation. 
   The best solution for a street car - given that you don't want to cut an 
intake - would be to put the oil cooler smack up against the front of the 
radiator. It's helpful that standard 10, 13 and 16 row oil coolers are usually the 
same width as the tall TR3/4 radiator (at least all the ones I've seen). 
Putting it against the front of the rad will not disturb air flow much and the 
slightly pre-warmed air really shouldn't reduce the radiator's effectiveness 
significantly (and will be more than offset by the additional cooling provided by 
lower oil temps). This suggestion is actually taken from Mocal's website a few 
years ago. In a nutshell, they stated that if the cooler and the radiator must 
share the same air flow, the cooler should be as close as possible just in 
front of the rad. Use a few rubber spacers to help keep them from vibrating 
against each other, I'd suggest. 
   In fact, depending upon how it's positioned, an elec. puller fan can then 
serve both the rad and the oil cooler. You'll need to remove the mechanical 
fan from the front of the engine  to configure the elec. fan as a puller. Leave 
the fan hub extension in place, it also serves as a sort of primitive harmonic 
balancer (there are true harmonic balancers available from 
_www.britishframeandengine.com_ (http://www.britishframeandengine.com) , and others, if you'd 
prefer to remove the hub ext. entirely).
   Be sure to use a thermostat in the oil coolers lines, to keep from 
overcooling  the oil. That would be almost as bad as overheated oil. Mocal now offers 
a neat oil cooler take-off combined with a 185 degree thermostat. It's just a 
sandwich plate that works well in combination with a spin-on filter and 
spin-on filter converter on a TR. Photos of this installation on my TR4 can be seen 
at the "Triumph Owners" link below. 
   Cheers!
   Alan Myers
San Jose, Calif.
   _amfoto1 at aol.com_ (mailto:amfoto1 at aol.com) 
'62 TR4 CT176092L
_http://www.triumphowners.com/640_ (http://www.triumphowners.com/640)   
(http://www.triumphowners.com/640) 
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I am looking for some guidance on the location of an oil cooler on a  TR3A.  
I have only seen race prepared and the cooler is mounted behind the  valence 
with a cutout for air passage.  I prefer not to do that for my car  which is 
a 
street car.  Is mounting it forward of the crank fixture behind  the grill 
too 
much obstruction for the radiator?  (My radiator no longer  has a crank 
hole).  This is a 13 row cooler and I am assuming the stainless  hoses are 
long 
enough to go there.  An electric pusher fan is being  installed.
TIA
David  Lylis
69 TR6 CC26160L
60 TR3A TS74461LO


 
 
 (http://www.triumphowners.com/640)  



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