A question about oil cooler positioning / placement.

If an oil cooler is placed somewhat higher than the sump/oil pan will
there be any issue with
oil draining back into the sump.

One of the machines currently under construction here the want is  to
place the oil cooler
vertically the fittings would be one at the top and one at the bottom Is
there likely to be an
issue with the oil draining back into the sump?

If there is an issue with drain back we'll need to fit one way valve/s
to stop this occurring I guess

What do you think?

Regards David

The oil cooler is under pressure so where it is plumbed back into the sump
should be of no consequence.

If the engine is stopped for a long time I think the oil is going to drain
out of the engine anyway so there will be a period of time where
the bearings get no oil. To forestall this people use pre oilers
which consist of a high pressure electric pump.

>
>Paul Lamar


I watched a dyno test with this electric water pump that showed HP
savings at high rmps
http://www.moroso.com/catalog/categorydisplay.asp?catcode=29300

I recall we talked about this at one point, but I don't think anyone
ever tried it. This pump uses 7 amps.
-dave

Well lets see 7 amps at 12 volts is 84 watts. One HP is 746 watts
so this electric pump motor is .11 HP. Are they saying this electric pump
pumps as much water as a mechanical pump? We used a 5 HP electric
motor and made a pump dyno. We measured about 3 HP for the Mazda
pump. Perhaps they are using an un-obtaineum impeller :)