RE: 200Q: Ruminations on low-end torque

[Peter Henriksen <peterhe@microsoft.com>]

Any way to upgrade a 91 200qw (20v) to the S4 specs? Horribly
expensive/hp?

Thanks.
- peter, microsoft corp., wa
  91 200qw
  94 acura legend gs
  80 mazda 626

>----------
>From: 	Linus D. Toy[SMTP:linust@interramp.com]
>Sent: 	Tuesday, March 12, 1996 4:53 PM
>To: 	quattro@coimbra.ans.net
>Subject: 	Re: 200Q: Ruminations on low-end torque
>
>At 08:57 PM 3/11/96 -0800, you wrote:
>
>>On Mon, 11 Mar 1996, Arun Rao wrote:
>>DELETED:  question about torque in the 20v turbos...
>>
>>I believe that thread was about the S2/S4/S6 motor.  I don't know if the 
>>figures are the same/similar for the 200's motor.  Also, that figure is 
>>true, but with the turbo already spun up, not from a dead stop.  It 
>>should be higher if you don't spin the turbo first.
>
>the '91 200q engine is quite similar to the S4/S6 engine.  minor
>differences
>include distributorless ignition and a limited overboost condition that
>gets
>it a bit more hp/torque.  however, the intake tract is much more
>convoluted,
>crossing over from the right side to the left side, with some *long*
>pipes.
>peak torque on the '91 200q is also at 1950 rpm
>
> tdonohue@xnet.com (Terry Donohue) adds:
>
>>This always bothered me too, because the low end torque of our turbos is
>>generally useless.  However, the specifications are correct, but only in
>>the dyno lab.  
>>[DELETE:  dyno lab rating method description].
>>So these output numbers, while technically correct, are truly misleading
>>in the real world.  If you want to confirm full boost at low RPM in your
>>car, put it in 5th (or 4th) at 2000, give it full throttle, and also apply
>>enough brake to keep it at that constant speed-you will slowly see the
>>boost rise (and I mean slowly) before either your brakes or your
>>determination gives out.
>
>On the 20v turbos, you're more likely to see peak torque (1.8 bar
>stock) if
>you start at 1500 rpm going up a slight hill.  And while it might take
>a
>bit, I typically see 1.6 or 1.7 bar within a couple seconds--1.8 does
>take
>longer, but 1.7 ain't bad!  btw Terry, your sig doesn't say--do you
>have a
>'91 200q or other year?  don't know how the boost rises in the 10v
>turbos.
>
>your comment on real world, though, is interesting.  only in the US
>where we
>play in the stop-light drags does the off-the-line grunt of the turbos
>put
>us at a disadvantage.  on the freeway, even in non-boost mode, flooring
>the
>gas pedal has a strong effect--and if you want more, just downshift!
>
>linus
>----------------------------------------------------------------------
>* linus toy           email:  linust@interramp.com                   *
>* "...it's stuff that does things people want, but they don't know   *
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>*                            --4 year old explaining 'technology'    *
>----------------------------------------------------------------------
>
>