Engine cooling

• Chris Carlisle

I’d like to have a copy of the template if it’s still available.

Well....... As it turns out, if you look closely at the pic, there are little holes on either side of the big oval center hole under the spinner. They are backed with nut plates. Looks like someone in this poor plane's long past put SOMETHING over that hole which has long since been lost.

So, I took Larry's very helpful Skyport engineering drawings and enlarged them on my printer enough so that the resultant size just overlapped those holes, traced it onto a 0.040/30 piece of scrap aluminum stock, and cut it out on the band saw. Screwed it in place with lock washers and now the oil temp comes off the peg in anything over about 20 deg OAT. The cabin heater works better too.

Thanks again Larry for your help. Anyone else need the template let me know and I'd be glad to mail a copy for the usual fee of $5000

Actually, it's free and I'll even pay for the stamp.

Chris

I have used some foam like from a foan cushion, cut it a little large and stuff it in the hole behind the prop and it helps.

Jack

Thanks Larry. That'll be a big help, even if for no other reason I know what hole to plug up now.

Chris

Skyport used to make and sell a plate to cover the oil cooling opening directly below the propeller on the standard nose bowl. When I had asked about it in the past, they sent me the drawings and my mechanic made one up for me. It raises the oil temp 10-15 degrees. I am attaching the drawings to this message, and I'll make sure they are in the files section of this web site.

My oil temp does not come off the peg in cool weather either. I think it reads low even in the summer. I use Phillips 20 X 50, so am not concerned. A 50 weight oil could be a problem.