I read a lot about the Rotary and I am beginning to get a better
understanding of its workings. The only thing I haven't seen are working
temperatures for oil and coolant. What is an acceptable upper limit for
oil temp and coolant. The other thing is fuel pressure and oil pressure
along with an idea of what the coolant system pressure would normally be.
Thanks if you can answer this for me.

Cheers
Baz Mayne

Coolant temp must be kept below boiling of course. That depends on
a few things like antifreeze to water ratio and coolant system pressure.
I recommend a 24 psi pressure cap. Expierence of others would suggest
coolant temps can be run as high as 220 F successfully. Lower is better as

there

is some data to support the idea that lower temps generate more
power. Lower temps also give a grater safety margin for climbing out
at max angle on a hot day. On the other hand higher temps result in better

BSFC.

Oil is pretty much the same. Nothing is cast in concrete.

Paul Lamar

Baz,
It add to Paul's comments, I have kept notes on recommended temps and my
notes from other builders say:
Water red line 220 degree F
Oil red line 210 degree F

For Best Power
Water not over 170F
Oil under 160F
George ( down under)


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