Re: oil cooler/oil heat exchanger combo?

[T Berk <tberk@mindspring.com>]

"Scott F. Williams" wrote:
> 
> The stock exchanger cools the oil when the coolant is colder than the oil -and
> can only bring it down to that same temperature at best. It obviously can't bring
> it down any lower. Considering that the coolant in your radiator is almost
> boiling when your car gets hot, I can't agree that the oil will never get up to
> the proper operating temperature.
> 
> And remember, the cooler mount that I've got is *thermostatted*. It should start
> coming on somewhere around just beyond ideal temp. My theory is that the
> combination will give quickest warm up and then a stable operating temperature.
> 
> Comments, anyone?
> 
> JLuk77@aol.com wrote:
> 
> > The stock oil heat exchanger actually cools the oil.  that is why it is there
> > so you will actually be cooling the oil twice and never get up to temp.  not
> > a good idea in my book.  Bu ti am sure some one will disagree with me.
> > Josh Lukasik
> > 88 16v 2.0
> >
> > --
> --
> Scott F. Williams


I'm kinda seeing what your describing but lets be sure-

The stock oil to water cooler mounts between the oil filter mount and
the filter. I don't think the (US) thing has a thermostat in it but I
could be wrong about that. It allows coolant (hot or cold) to flow next
to the oil, thereby cooling the hotter oil.

Then there is a Thermostatic plate type oil cooler that mounts between
the oil filter mount and the oil filter. It doesn't let oil flow through
it until it gets up to temp.

So- (If I have it up to this point), the stock oil cooler will allow the
oil to track the coolant temp more closely, warming up from cold to 100c
(nominal). Around this time the oil being closer to the combustion
begins to exceed the coolant temp and the relative coolness of the
coolant begins to carry the hotter oil's 'excess' heat away.

Then- the Thermostatic Plate Oil Cooler begins to get hot which opens
it's thermostatically controlled valve, allowing hot oil to flow out to
the multi row, external oil 'radiator'.

BRainstorming 1st Takes- 

- Greater overall load capacity for transporting heat out of the engine.
- Two stage (well three inc. water jacket) cooling system. Overlaps,
possibly a good thing.
- Can the plate oil cooler's thermo be set to a certain temp or is it
'One Size Fits All"?
- Don't see how it can Cool Too Much if the thermo don't open (because
it doesn't get hot enough).


Thems my thinks, Do I have a clue?
TBerk

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