Dan, I think I have the 10599R Stewart Warner, I'll have to check to be sure, but I know that it is 9 rows, so I believe it is the same as Marc is using. So far I have 3 flights for a total of 2.6 hours (2nd and 3rd flights cut short due to hight winds and big bumps). I have a Showplanes fastback with the showplanes cowl and a TMX IO390 under a homebrew plenum. BTW I have the MT 3 blade. The cooler is mounted to the engine mount at a 13 degree angle behind cylinder #4 and fed through an airbox mounted to the cooler and pressed against the baffle behind #4 sealed with foam weatherstrip from the aviation isle at Home Depot. I will try to get a pic for you, but it may be a few days before I have time. Work sure interferes with my time off. It has been mid 70's to mid 80's for my flights, and running 24"X2400 for most of the time I haven't seen more than 210 on the oil temp yet. My cylinder heads are stabilizing in the 345-360 range. I am still designing and building inlets to the plenum, currently just using neoprene to seal between the inlet rings and plenum opening, and I know I have significant leakage. I also plan to try a 4" scat exhaust for the oil cooler to give the air a direct outlet to the cowl exit in hopes of creating a little direct scavenging from the back of the cooler. So far I am pretty happy with the temps, but with the Arizona summer looming, it can't be too cool.
