I’ve made a few flights now with the new turbo and finally have the engine re-tuned, so it is running great.  The down side of the new turbo is, that my cooling, which was a bit marginal is worse with the new turbo. 

I did plan on making some inlet adjustments, but finally decided to just go with a customer built aluminum radiator.  I found a company here in NC that makes them to order, and it should arrive tomorrow.  It will also have the aluminum shroud with it to mount a cooling fan, which I did not have before either.  With the pusher, anything over about 10 minutes of ground operation would have temperatures over 180 before the takeoff run.

 

I also had ¼” NPT fittings put right next to the AN16 inlet and outlet,  Since I already have a sensor on the water pump outlet, I’ll use the inlet fitting for a limit switch to operate the fan.  I’ll also put in a switch on the instrument panel to operate it manually as well.  

 

In the next couple of weeks, I’ll remove the old evaporator cores and plenum, build mounting brackets for the new radiator, and build a new inlet plenum to the radiator.  I had them put a ½” flange around the perimeter of the core on the inlet side for easy attachment of the plenum to the radiator. 

 

Steve Brooks

Cozy MKIV N75CZ