REFLECTOR: Fwd: My Velocity setup

[NMFlyer1 at aol.com]

Rotary engines utilize engine oil for a much larger portion of cooling than  
do crank engines. If my oil temps are as high as a rotary, I have a serious  
problem with the engine. I neglected to say that I am using a remote mounted 
oil  filter setup with a "cool can" on it. They aren't super efficient, but they 
will  lower oil temps by 7-10 degrees. Combine that with an all aluminum 
engine, pan,  heads, etc. and I do have a fighting chance to not need an oil 
cooler. If  needed, a simple 3-row inline cooler will do the trick. I just do not 
want to  add all the lines and fittings until I know if it is necessary. 
  Oil cooler backup plan number two, is to add a transfer coil under  the oil 
filter, in essence doing just what you mentioned.   
 
Hopefully, plan a, b or c will do the trick.  Keep the input coming  
though... .It all goes in my "just in case" file.   :) 
 
Kurt Winker
 

Some  years ago, Tracey Crook, who uses a rotary had insufficient oil cooling 
(1/3  of heat rejection is through the oil)  he ran a coil inside of his oil  
pan and circulated a portion of his cooling water though this coil before it  
went to the radiator.  This appears to have been the little extra oil  
cooling he needed to get the oil temps where he wanted them.  The  interesting part 
of his report was he felt this setup improved his overall  cooling and 
attributed it to the higher coolant temp resulting in a higher  delta T at the 
radiator with a resulting higher transfer rate. 
 
This may be enough to avoid an oil cooler in your application.
Joe


 
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