Are you sure your oil pick up is clear?  You may have something in the
bottom of the motor..Shop rag?
  Reason I say this it because that happened to me on a race car I built
once...I swapped cams and had shop towels inserted to keep stuff from going
into the cylinders.  My motor guru asked me if I had counted all the rags as
I put them aside and I said "No"  he surmised, correctly, that during
rotational fiddling with the cam settings one of the shop rags must have
been pulled through an oil passage into the sump and sure enough, I managed
to fish one out from the oil pick up screen using a bent piece of welding
rod through the oil drain plug..Solved my low oil pressure after warmup..
  Dunno anything about the WBX oiling system but you may want to check and
make sure the pickup is clear.
  Don Hanson

On Sat, Aug 8, 2009 at 8:14 PM, pdooley <psdooley@verizon.net> wrote:

> Dave- any chance you're radiator is gunked up or scaly inside?
> I had a Quantum with that problem, drove me crazy.
> She would overheat idling with the cooling fan blasting away.
> I didn't have a spare Quantum rad and didn't feel like buying one for an
> experiment, but I did have a rabbit unit laying around.
> Hooked the rabbit rad up via long hoses outside the car to confirm the
> problem.
> I don't know if this is relevant to you're situation but hopefully it will
> help.
>
> (*snipped all to please the poor smucks who pay for data)
>