MC tweaks

[Dave Aukerman]

The k26/27 turbo will turn the car into a monster.  Running 2.0bar on a 89
200tqw with said turbo and 2.5" exhaust.  Pulls hard all the way to redline
no problems.

Dave

----- Original Message -----
From: Cody <Cody at mail.craincorporated.com>
To: <quattro at audifans.com>
Sent: Tuesday, December 02, 2003 10:54 AM
Subject: MC tweaks


> I have a few questions about simple tweaks for power on an MC engine in a
'87 5ktq. I'm not quite satisfied with the power I have in the EFI car (I
highly doubt I EVER will be satisfied no matter how much it has), but I
can't spend the cash for the T3/T4 and header right now, so I'm wondering
what more I can do to get a bit more out of it with what I have.
>
> First thought is I remember somebody mentioning porting the collector of
the stock header. Whats the full story there? As far as the rest of the
exaust I'm running no cat and I removed the rear muffler.
>
> The biggest issue I see now with the stock turbo is that it just can't
match the flow I'm requesting from it. With the boost set at 2.4bar absolute
I get great mid range power, but after about 3000rpm the boost starts to
drop until arround 4500rpm it levels off at 2.0bar. I have heard of people
porting thier turbos, but my thoughts on that go with the compressor is
supposed to have a very specific clearance at the inlet and porting would
mess with that. I fully understand that my biggest restriction right now is
the stock EM and turbo, but like I said I can't afford to change them right
now. I was thinking of checking out the specs on 944 turbos, I have a bunch
of them laying arround. I also have a k26/k27 hybrid, but last time I tried
to fit it I found that it hits the alternator. Maybe I'll try that again
with a smaller alt belt now that I think of it.
>
> I plan on porting a head to put on it this week, and matching the intake
manifold to the ports, but I don't expect much from that. I think I havfe an
adjustable cam puley (it's for a 924, not sure if its the same, I'll look
today) so I may tweak the cam a touch. Are there any other tricks for these
motors, or any other suggestions?
>
>
> -Cody Forbes
> Black Forest Racing
> 2x '86 5ktq
> '87 5ktq EFI
> '88 80 4cyl
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