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Date: Mon, 22 Jun 2009 10:56:36 -0400
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From: "Colyn Case at earthlink" <colyncase@earthlink.net>
References: <list-3690383@logan.com>
Subject: Re: [LML] TSIO 550 CHT
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for #5 you want about a 1" high by 2" wide hole at the max diameter of the 
cylinder, with a little roof pointed slightly down, since the airflow is 
likely up there.
for #2 you want enough clearance between the back of the cylinder and 
whatever you have there for air to pass by reliably.   someone else will 
have to chime in but I thin
1/4" is the recommended amount.

other factors are fuel flow and whether you have the exhaust tunnel 
extensions or not.
the latter will pull more air through the cylinder fins.

----- Original Message ----- 
From: "David Standish" <carbonflier@gmail.com>
To: <lml@lancaironline.net>
Sent: Sunday, June 21, 2009 8:30 PM
Subject: [LML] TSIO 550 CHT


>I have just spent an unsuccessful hour searching the archives regarding 
>baffling modifications to address relatively hot CHT on No.'s 2 & 5 on the 
>LNC4.  I am aware that some builders have made a small opening in the 
>baffling ahead of No. 5 behind the alternator.  I would like to know the 
>dimensions and exact location that has been successful in lowering  No. 5 
>CHT.  I have also read here that a "blister" in the forward face of the oil 
>cooler box will help lower No. 2 CHT, any comments?
>
> David Standish
>
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