Transmission options[was Re: Intercooler fitment, etc. on possible turbo conversion]

[Ben Swann]

Answers to questions/Questions to answers & Comments inserted below.

This all has been a great help BTW - Ben
----- Original Message ----- 
From: "Huw Powell" <audi at humanspeakers.com>
To: "Ti Kan" <ti at amb.org>
Cc: <benswann at comcast.net>; "Audi Mailing List" <quattro at audifans.com>
Sent: Wednesday, February 25, 2004 11:36 PM
Subject: Re: Intercooler fitment, etc. on possible turbo conversion
>
> > I think a late '83 or '84 Coupe GT 093 trans still had the cable
> > operated clutch, but with the close ratio gears.
- Don't think I want close ratio - I think that is what is on the car
already.
> > You might want to check on that (I am not absolutely certain).
-Don't know, and need to confirm.
>
> That is correct.  The QF tranny is cable and high gears (80 mph at 3k in
> 5th).
- OK - this I believe would be what is needed.  What cars did it come on?

> The 3Z, which should be floating around in '84 MY cars has the later lower
gears (60 at 3k in 5th?)

- That is probably too low.

 and is still cable operated.  I've
> been trying to get one for years - there were some on ebay a while back
> (new ones!), but I guess I wasn't trying as hard as I thought.  The ABV
> is the same lower gear set but has a hydraulic clutch, from 85-87 (the
> 87.5 cgt has different output flanges, don't know if it still the same
code)
>
> >> The '83 also has a cable actuated clutch, so you'd have to add the
> >> hydraulics to run the later tranny.  The later tranny will get him
> >> lower gearing - an instant 15-20% jump in "apparent" power.
>
> > Oh man details - I forgot about that.   Don't know if I'd want to do
> > this - anyway to retorfit these trans with the old style cable
> > actuated arm?  I suppose I could source a trans from a higher geared
> > car - perhaps an old 5000?
>
> Which do you have a problem with, the hydraulic part or the gear ratios?

Since I am going to install an engine with almost double the horsepower, IMO
the car should get a higher gear ratio.  With the power of a chipped and
warmed over MC, it was enough to rev. to 7 grand in a heartbeat and that was
in a 5ktq avant.  I couldn't imagine what it will do in the light FWD coupe,
but I think lower gears and close ratio would not be good and higher gearing
similar to that of a 5000 turbo quattro works well.  Just need to find
similar gearing with a cable actuated clutch.  I know I could fabricate the
hydraulics, but really don't want to go there.
>
> > If I were to source a FWD trans. for a '83 coupe upgrade, which would
> > you look for?  How to get around the hydraulic clutch conversion
> > issue?
>
> As an upgrade?  To upgrade what aspect of it?  If you want lower gears
> and cable operation, answer is above.  If the owner likes the high gears
> (lotsa highway miles, etc.), stay with what's in there.

- I'll check this, as I really don't know as it is not my car.  What
generally came in the '83 Coupe?  How would I tell if different
transmissions were available?  maybe the right tranny is already there, but
someone mentioned the probability of needing taller gears, which spawned
this thread of the engine swap questions.
>
> As far as the hydraulic conversion, it shouldn't be a big deal - the
> pedal cluster already has both the cable hook and a place for the master
> pushrod, as I recall.  Cut a hole in the firewall and mount the master,
> hard hose to the slave, soft hose to the brake reservoir nipple for fluid.

- Yeah, maybe it is more trivial than I'm thinking.  I wouldn't be surprised
if I have all this in the back yard.
>
> I hope this helps a bit...

- As always - this list is the greatest!   Ben
>
> -- 
> Huw Powell
>
> http://www.humanspeakers.com/audi
>
> http://www.humanthoughts.org/
>