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Date: Wed, 27 Jul 2011 16:28:36 -0400
From: Ernest Christley <echristley@att.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Injector mounting in top of block?
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Kelly Troyer wrote:
> 
> Ernest are you takeing your return coolent (to your radiators) from the 
> center housing
> as your photo would seem to indicate ??................ 

No.  That was an idea that I was playing with, but gave up on.  That opening goes to a chamber in the center plate, and 
out a couple of 1/2" holes, one next to each exhaust port.  It is part of the exhaust gas recirculation piping.  I 
wanted to blow cooling air into my exhaust shield, and this looked like an easy way to do it.

The problem that came up is that the exhaust inserts have a hole in them which allows some of the exhaust to enter the 
center chamber.  Thinking back, I could have put some thin stainless sheet around the insert, or a plug in the hole, but 
leaving it open would allow fresh air pushed into the chamber to flood into the exhaust and play havoc with my EGO 
readings.

If I ever tear the engine down, I will revisit this idea, but for now I just have it blocked with a plate.