Message-Id: <5.1.0.14.2.20021002182240.044e9550@lancaironline.net>
Date: Wed, 02 Oct 2002 18:24:09 -0400
To: flyrotary@lancaironline.net
From: "Michael D. Callahan" <micallahan@worldnet.att.net> (by way of marv@lancaironline.net)
Subject: Re: [FlyRotary] Turbocharger Hiflows 12A 13B Series IV & V
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Ed,
     I think this turbo may not be well suited for aircraft use, either. 
Just like the stock turbo, this is intended for low altitude applications 
and will be pushing, if not exceeding it's surge limits when it gets up 
there where the air is thin. These small diameter automotive units are 
designed to spin up fast to avoid lag. They are of small diameter to reduce 
rotational inertia, but that small diameter also means they are going to 
have to really be humming to manage to compress the air to a desirable 
ratio at 7Kft+. Those who are thinking of turboing a 13B for aircraft use 
need to check with somebody who really knows turbos to get the 
correct  unit for the  applications we will be facing vs an auto 
installation. Turbonetics is a good source of this info, but probably not 
the cheapest, if you know someone who is a turbo guru.
     BTW, Turbonetics is a US owned company. I went to the turbo forum at 
Oshkosh this year, which was put on by Kelly Aerospace, who now owns 
Rayjay, Garret/Airesearch, and Turbonetics.

[Mike.... I had to deep six the formatting in your post... couldn't read 
the bright green text at all.     <Marv>             ]