[s-cars] Re: RS2 turbocharger

[QSHIPQ at aol.com]

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Javad:
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In a message dated 6/14/02 11:33:57 AM Central Daylight Time, JShadzi writes:


>Agreed with the below, especially if you are talking straight T04E
non-hybrid, has >not place being on a small 2.2.  Currently I'm running the
50 trim hybrid which I >believe is the best overall trim for good
streetability.  The 57 and 60 trims will build >good, useable boost but at
about 500+ rpm response lag, definitely on the really >big side for a little
2.2.  Funny, though, how many 1.8t guys are running a big >T3III/T04E60 trim.

Sounds like many could benefit from spending some money on a turbo dyno (yup
they have those).  Maps easily indicate how far "off" you are in sizing.  In
the world of choices, opening up too much top end almost always COMES at the
expense of low end.  I say if you don't ever need or will never need the
800+cfm, go smaller and get back the low end.

The basic recommendations for matching turbos is in several publications,
including Corky Bell's.  If you haven't taken a gander at a turbo MAP and
understand how it works, going BIG is a sell, not necessarily a wise
decision.  I've seen many a post here wrt "bigger=better" where the turbo
never gets to it's peak turbo CE.  Better ways to skin that cat IMO/E.

>I wouldn't mind palying around with an RS2 if it didn't cost 2-3 times more
than the >hybrids I have acess to now.

Ha, want some real prices.  Call MTM, he's got some stuff that makes the RS2
seem like a steal, we have some of his hardware on the S2 rally car.  There
are some cold side wheels and housing designs, that really rock.  I've seen
them in hand, so has Ned.

Once Bob and I get your EFI straightened out Javad, it will be plunked on an
RS2 turbo equipped 5ktq with a monter IC, and 4.11 gears.  Looking forward to
even less lag than it has now.

TTYL

SJ