(1.8t PHOOIE!!) Turbo 4000Q conversion idea

[QSHIPQ at aol.com]

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I'm with you on this Rolf.  The TT is the only 1.8t with the forged crank,
all other versions of this motor are of the cast variety.  After instructing
a student with a APR stage III (Blackhawk ACCNA event) and seeing 25psi
consistently on a 95degree day, my doubts on this motor started immediately.
I'm thinking that many of us shop dudes are going to become VERY familiar
with this motor (some already are)

All that said, with just the stage III and a set of big brakes, this setup of
car would easily run down tweeked S4tt's at the track (Blackhawk and Mid OH).
 This will be a mod habit that will be tough to take away.  Where the
breakage is starting to occur, is in the "back to back" runs with shared
driving on hot track days.  2 turbos (both K04 variety) snapped under the
abuse.

Just the beginning IMO.

my .02 arbitraged thru the peso

Scott J
In a message dated 7/22/02 5:59:12 PM Central Daylight Time, "R. Mair" <
waves at epix.net> writes:


I've said this before and I'll say it again, the 1.8t is not the way to go
unless you keep the engine relatively stock. The 150-180hp versions were
designed and constructed as ECONOMY motors, compared to the V6 mills. They
will get fairly decent fuel mileage yet yield some semblence of 'scoot'
under WOT. However, the guts of the motor are fragile in comparison to any
other 'current' motor Audi ever built. The valve stems are about the
diameter a Q-Tip. The rods are weaker than those in the weakest normally
aspirated 4 or 5 cyl. Yes... you can chip them, make them breath better and
do all sorts of fun stuff, and then you end up with a grenade. Audi spent
tons of $$$ to learn this, as they tried it in order to make the TT faster.
After pretzeling a few rods, they beefed up the reciprocating parts and
turned out a 225hp version. So... if you're dead set on doing a 1.8t
conversion, shoot for a TT motor ($$$$$). If all you want is a reliable
stock mill, then a 150-180hp will do. Either way, don't count on hopping any
of them up more than 35-40% over stock hp figures, if you want something you
can count on for everyday driving. Yeah, there are a few 300hp 1.8's running
around. They are either TT mills or older ones that were upgraded with
better guts. If not, stand back when the take off.