I like it -- but only because it favors the SVO, which can make well over 20
psi and flow up to 300 hp with the stock turbo and an engine modified to SP
rules.
Richard Nichols
rnichol1@san.rr.com
San Diego, CA
-----Original Message-----
From: dg50@daimlerchrysler.com <dg50@daimlerchrysler.com>
To: David Hawkins <otgrouch@twosrus.com>
Cc: Mohler, Jeff <jeff.mohler@wilcom.com>; autox@autox.team.net
<autox@autox.team.net>
Date: Monday, March 22, 1999 8:00 AM
Subject: Re: SP rules on catalytic converters
>
>
>
>>> Protesting: If the turbo has the stock casing and part number
>>>stamp..fine. Its probably stock. But after that you would need a
teardown
>>>to determine if the compressor/turbine wheels are stock (not hard, and
lots
>>>easier than a motor teardown)
>
>>While this is true, I have yet to see a turbo modded with a bigger wheel
>>that did not have the inlet casing milled out to accommodate the greater
>>flow characteristics of the new compressor.
>
>The important point to note here is that now we're talking about milling
metal
>off a part in order to cheat. This means that now, in order to cheat with a
>turbo, we're talking about doing something that's of a kind with illegally
>ported or milled heads, illegal pistons, etc. - not some hard-to-understand
>turbo voodoo.
>
>I'm convinced that 90% of the reason the SCCA's rules are so
turbo-unfriendly
>are because the non-turbo folks don't understand how they work; more
>specifically, they don't understand how the boost control systems work, or
why
>they work. There seems to be this general perception that a sneaky turbo
guy can
>make hundreds of extra horsepower by fiddling with a vacuum hose or a
wastegate
>actuator.
>
>By opening up boost controls, the non-turbo competitor (or for that matter,
the
>Impound worker) no longer needs to understand all the magic, all (s)he
needs to
>worry about is that the turbocharger - a nice, big, hunk o'metal - is
>unmodified, the same way heads, camshafts, pistons, etc. need to be
unmodified.
>
>It strikes me that everybody wins this way.
>
>DG
>
>
>
>
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