Here are some photos of a BME105 install in a Lanier 31% staud. The mufflers are my own design. Everything is a tight fit. please look and comment. I just don't want this to explode in a ball of fire on the first pass!! The cans JUST fit between the motor box sidewalls. I've got 1 inch diameter holes on each side of the motor box above the C/L of the cans, and also in the firewall above&between the cans. The side holes have "scoops" and I plan on putting a "wedge" on the leading edge of the exhaust hole in the fuse bottom behind the landing gear to create a "suction" through the pipe channel. I've lined the entire channel with aluminum duct tape and the top of the channel is actually .020 aluminum sheet. The front 60% of the cans are exposed in the cowl area and will have lots of airflow over it. Will this be adequate cooling? I had to BUILD IN the pipes, since the geometry of the tight installation would not allow them to be removable. Also, the connection between the cans and the headers was SO TIGHT that I'm only using one "constant force" spring clamp over the joint. There's no where for anything to move, so I'm hoping it will all stay put.

Hi Joe; Hows everything going?? I dont think it will burst into flames :stupid: but like anything new and un-tested you will want to keep a close eye on it for sure. At least for a while untill you feel that everything is OK. I would start with some ground runs with the fuse all closed up. (You will probably be doing some anyway checking out everything on the new plane) Then pull the top hatch off and see how "warm" the inside of the tunnel feels (The side inside the fuse)
At the VERY worst you would probably get some indicators, smell, something before anything like flames would happen.

Also you cant see it in the pic but the exit hole in the bottom of the fuse is really quite large; I think a lot of air will get pulled out of there.
Adam

the rear of the heads appears to be quite close to that wall - this maycause really high heat problems -
the mufflers - should work
send a pic to the BME folks --ask about the need for airflow around the rear of the head -
If you had a total shroud -like a VW engine -that would force air thu the fins - a fair bit of work--