David,
Yes, your 3rd gen Cosmo will need better cooling because it packs another 20 or 30 horses at least. I've seen those intakes - they're about 20% bigger than mine. I believe it's the same setup as mine - 3mm seals and 9.7 rotors. With a T04 it's gonna be a rocket ship. I think those 3mm seals will protect you from the detonation devil to some extent. I also found that the IVO prop kept detonation at bay. I'd hear it with my fixed pitch prop as the engine tried to turn it during run-up - kinda like using full throttle in top gear up a hill - but I never hear it with the IVO on fine pitch.

I slightly misspoke - One of my "oil coolers" is actually a 3rd gen transmission fluid cooler. They're almost exactly the same as the oil coolers.

I tried a very powerful coolant fan on the bottom of the rad (out of a Ferrari). It did nothing useful, and I think it got in the way of airflow when airborne. I took it out. Part of the problem may have been airflow when on. It could have been drawing hot air from inside the cowl through the oil coolers and recirculating it. I think the two most effective aspects of my cooling are the sealed plenum under the rad, and the exhaust augmentation. The latter handles on-the-ground cooling fairly well. I stabilize at around 200 on a hot day. I have a standard NACA scoop and no additional armpit scoops. I throttle back and do a "cooling pattern" after take off on a very hot 90F+ day. This seems to be a fair trade-off for minimum drag at altitude.

I installed a cowl flap at the back of the plenum. I can open it in flight to allow excess cooling air out of the back pf the boat tail cowl. I can't say for sure, but it doesn't seem to make much difference.

No, I didn't go with the ceramic bearing (on advise from the turbo expert I consulted with). He felt the standard bearings with the big shaft were more proven.

>What about the turbine wheel F1 62, 65 or 68?
No idea. I don't have a note of this option. I guess you could ask them what I got. Perhaps Chrissie knows. All I know is that it's T04E-50 big shaft tangential with P trim and wet housing. Does my aspect ratio of 0.96 tell you this.

>What about compressor trim 50 (2.122/3.000) or the Super 50 (2.122/3.200)?
Same as above

>Are you still running a stock intercooler or did you end up upgrading?
Stock, but the airflow to it isn't enough. My intake temps are too high. (130F or so). I haven't changed it because it seems to work as is. (ie I havent blown the engine up yet).

One suggestion I'd make is to do as I did and visit people who have running rotaries in Cozys, wherever they are.  (Anyone except Chris :)  - There's no comparison to one-on-one discussion and personal inspection of a working system at this stage. I was lucky - Greg Richter was just up the road from me and Buly was 20 miles away. Ride an aluminum tube to the North East and I'd be happy to provide accommodation / tour / experience flight.

Regards,
John