Subject: Powersport drive
From: Paul
Date: 8/1/2000, 6:49 PM


Also, someone asked about the PS cooling system.  Here is the PS
Radiator and
oil/water heat exchanger in the foreground.  They report oil temps at 220
comming out of the engine.


Mike Wills wrote:

  I wonder what the oil temps are out of the cooler/into the engine?

  In studying this picture and the pic that Paul posted earlier it appears
that the oil/water heat exchanger is plumbed into the coolant loop in
parallel. Looks like one hose going to the vicinity of the top of the water
pump and the other to the surge tank.  Is this correct?

  Previous conversations here have alluded to a marginal amount of flow
from the water pump. Based on that Fred Moreno recommended against parallel
plumbing if I were to use one of these coolers. Instead he recommended a
series installation in the radiator hose to the thermostat housing. Could
this parallel plumbing be a contributing factor in the cooling problems
that Paul mentioned earlier? If flow is marginal anyway and a significant
fraction of coolant is circulating through the oil cooler and not going
through the engine seems that would be a bad thing.

Mike Wills

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