Those rotarys are pretty respectable. I don't know about 600 HP reliably tho. There are 2 guys that run rotaries in Solo1 with us. Here is a picture of me putting out a fire on one where the block spilt wide open on a fairly new motor (2nd track day). The owner, Dan had a new motor in the car and was back racing in under 2 weeks.

http://forums.pelicanparts.com/uploa...1255995312.jpg

These guys are pushing 400 - 450 HP...

It is easy to rev a rotary to the moon...
... but the longevity leaves the building.

The rev-ability of a rotary is a common wives tale from people who haven't had to work on them and keep them running. A "flopping lobe motor" will rev unbelievably but what you don't hear (as the engine happily screams and makes great power) is the apex seals chattering on the housing as they are unable to follow the inner curves of the housing. You do that for a while and the chatter marks on housing will swallow the seals and then you have a oil sucking motor needing a rebuild. The problem is you can't hear if you are damaging it and because it doesn't go 'Boom" instantly no one seems to learn that they destroyed their motor.

It is similar to the guy that makes a street engine and runs an open intake because it makes great power and cool noises. What you don't see is the engine rebuild he had to do at 1200 miles because the rings and cylinders are gone.

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The rotary turbos are kind of a joke because the only way to make them hold together was to run minimal boost. They produce so much heat that everything involved would melt down if the boost was turned up to the point where it could compete with a peripheral port rotary. The turbo was good for emissions so at least it did something good.

If you want real power from a rotary go get a die grinder and peripheral port it. The little 2 stroke monsters will make insane power, melt almost anything near the exhaust system, and make you go deaf in the process. Cheap stupid fun!