[Shotimes] Re: synthetic oil and oil pressure and race fuel

[Zach Leahy]

I think,and remind I think I am not positive, that cooling wateri n
order to coolt he oil better is probably not as effective as just
cooling the oil in the forst place.

Physics tells me there is loss in each step, so I plan to keep it
simple and cool the oil by the air.  Otherwise you are cooling water
which in turn cools the oil.  Seems like one more step and one more
loss in the transfer.  My thought is that a liquid/air cooler can
probably reject a certain amount of heat from a certain sized cooler,
based on the same temp of liquid (and we're close enough to call them
about the same in this case).  More cooler and the temp drop is
higher, less cooler size and there is less change in the temp.  Yes
there are specific heat issues at hand, but with fluid in motion I
don't think it's as big of a change.

So my theory is to keep is simple and cool the fluid I want cooled directly.

Z

On 7/29/05, Paul Nimz <pnimz@v8sho.com> wrote:
> So why not cool the coolant before it goes through the oil/water cooler?
>  
>  
> Paul
>  
>  On 7/29/2005 7:51:48 AM, Zach Leahy (leahyz@gmail.com) wrote:
> > Not sur eon the original post, but I am running an external air/oil
> > cooler in addition to a remote filter.  After all the lines are added,
> > and the cooler and FL1A filter, the capacity is 7.5qts!  That alone is
> > really nice.
> > 
> > Running with Mobil 1 5W30 at the track I saw oil temps standing right
> > at 250 F.  Water temps were not quite as high, about 20 degrees
> > behind.  While the oil/water cooler is more effective than the oil air
> > as you mentioned it has limitations, and it also only works when the
> > oil temp is lower than the water.  around town idling (stuck in
> > traffic jam) the water temp can exceed the oil temp, and then your
> > oil/water cooler is actually heating up the oil.
> > 
> > The external oil/air cooler makes a difference, albeit not huge, but
> > it's not a huge cooler either.  It fits nicely (with some rigging and
> > hole saw work) right behind the Ford oval on the front.  (mine does,
> > any bigger and it won't.
> > 
> > 
> > The drop in oil temp has not been unrealistically huge, but it helps
> > some.  I am measuring my oil temp in the pan, near the exhaust, so I
> > may have slightly higher numbers due to exhaust and catalyst heat
> > bleeding over.  Hard to say exac