Miata Mailing List: September 1994, Message #52
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   From: Steve Ling 
Subject: Re: Super/turbo kit information
   Date: Fri, 2 Sep 1994 14:17:57 -0400

On Fri, 2 Sep 1994 MANSON@fsd.com wrote:

> Kevin has requested information regarding supercharger/turbocharger 
> comparisons.  I too would be interested in these data, as would perhaps
> others on the List.  Please post the responses to the list for public
> viewing if at all possible.

 Add me to the list of interested-but-not-yet-sure-what-to-choose. I've 
spoken to both Corky Bell and Norman Garrett in person. Corky said look 
at the numbers (meaning boost pressure vs RPM). Norman said look at 
reliability and drivablility. Key issues to me seem to be intake temp 
(much lower with Bell intercooled version) and the relationship between 
the boost and the engine RPM. The supercharger, being directly driven, 
produces predictable boost. The turbo boost depends on engine RPM and on 
how long the turbo has had to spin up. In the wide open throttle tests 
provided by Bell the turbo clearly has more boost. But how will that be 
affected by real world throttle inputs? Will you have to "work" the turbo,
especially in a autox type of environment. Food for thought.
                                [][][]
  Steve Ling           "During the race, try to drive a little faster than
  sling@netcom.com      is enjoyable; you cannot go really fast without
  Houston, Texas        frightening yourself occasionally" -- Paul Frere