Message-ID: <002c01c078bd$4608ae60$a0ca0041@saltlk1.ut.home.com>
From: "Robert Smiley" <robsmiley@home.com>
To: <lancair.list@olsusa.com>
References: <200101061909_MC2-C0D3-CA11@compuserve.com>
Subject: Re: LNC2 Exhaust Installation
Date: Sun, 7 Jan 2001 08:19:48 -0700
Reply-To: lancair.list@olsusa.com
Mime-Version: 1.0

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You could glue on some fiberfrax and heavy aluminum foil on the cowling in
the vicinity of your exhaust pipes. The clearances are very close; sometimes
3/8 to 1/2 inch.  Make sure you have clearance for your exhaust pipes from
the lower fuselage forward edge.  Your engine will sag over time and the
pipes will come closer to rubbing against the fuselage as the pipes raise.
I had to cut my extensions, bend them downward and weld  them up.  Also do
not bolt both pipes together at the ends where the extensions are attached.
you do this and you will most certainly crack the pipes over time.  Also do
not wrap the pipes with insulation you buy from auto performance shops.  You
cannot see pipes for crack inspection.  If you want to reduce the heat take
the pipes and your intake pipes to a shop and have them porcelain painted.
Chrome for the intakes and dark grey for the exhaust pipes.  This will keep
the heat inside the exhaust pipes and reflect heat from the intake pipes.

I used castle nuts.  There are no nylocks anywhere in the engine
compartment. Use castle nuts in critical areas and castilated lock nuts
everywhere else.

Bob Smiley
N94RJ

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