From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: [FlyRotary] Re: intake manifold porting question
To: flyrotary
Date: Thu, 19 Dec 2002 10:01:56 -0500
Message-ID: <web-1930707@logan.com>
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Posted for "Tom Kendall" <Tom.Kendall@att.net>:


----- Original Message -----
Wrom: JPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISH
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, December 18, 2002 5:46 PM
Subject: [FlyRotary] Re: intake manifold porting question

> Is it acceptable to use something like Marine-Tex
to
> help smooth the ports?  Should I worry if a piece of it comes loose?  I
plan
> on a turbo'd 20B.<<<

Don't sweat the small mis-matches, especially if you're going with a turbo.
If you do decide to use some kind of filler, make sure to roughen up the
metal surface first and clean it maticulously  for a good bond.

If I were that concerned about performance, I would have them weld build up
any areas that needed it and then file off & polish any mis-match.  If a
piece of anything should break off and get into the engine, you can bet on
buying a new housing, seals, etc., not to mention loosing performance in the
air when it happens.  But the beauty of these engines is that they will get
you down safely without a catastrophic failure even if you do eat a piece of
junk.

Tom Kendall