Over the oil check door. I used hi temp silicon to seal around the individual cylinders and  force all intake air through the cooling passages. Works great and almost makes engine run too cool. Also had no touching or vibration

On Jun 3, 2013 2:10 PM, "Bob Rickard" <r.rickard@rcginc-us.com> wrote:

Gents - a couple of questions regarding plenum design (IV-P/TSIO 550 specific)

1.  What do you do about the oil door on top of the cowl?  

2.  Is it better to have absolute min volume around the engine, or is it ok to mold to the cowl for the upper sides?

3. What do you do for airflow on the pilots side where the 3rd intercooler is?

I'm definitely sold on the plenum idea and have a great carbon man here in STL.  Just need to figure out those specifics to get designing…..

Thanks

Bob R

IV-P

On May 25, 2013, at 12:51 PM, Paul Miller <pjdmiller@gmail.com> wrote:

Tom, I looked at your plenum page

http://www.n54sg.com/baffle-kit-diffusers-and-plenum/

where you place the poster board over the engine for a mold shape.  I was thinking how easy that could be on the IO550 even if it didn't do all the fancy work up front with diffusers and so forth.  Such a simple piece might seal the back, two sides for perhaps 75% positive seal.  It would get rid of a lot of silicone strips with (what appears to be) reasonable effort.  Great idea.

Paul

Legacy

On 2013-05-24, at 1:57 PM, Tom McNerney <dudewanarace@yahoo.com> wrote:

A lot is possible.  Could be gear actuator, could be a door actuator, could be the dump valve, etc.

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Bob Rickard

President, Rickard Consulting Group, Inc.

r.rickard@rcginc-us.com