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[tech] 4K vs 9a question was: What tranny is this?
The output flanges are a differenet size. The 4k is a 90MM and the 9A is
100MM.
----- Original Message -----
From: <pbureau@attbi.com>
To: <scirocco-l@scirocco.org>
Sent: Sunday, April 07, 2002 10:31 AM
Subject: [tech] 4K vs 9a question was: What tranny is this?
> To throw my 5 cents worth, I have an 85 (09/84
> production date) and it is a JH Engine with a 9A
> tranny. I beleive the 4K production line finished in 84
> and 9A started in 85 production lines. the only
> difference between a 4K tranny and a 9A tranny is the
> final drive btw.
>
> why state the 4K being a they are the performance
> tranny on a vw when the 9a produced more MPH ??
>
> 4Y, 9A, ACD, AEN (8v Close Ratio)
> 3.67 3.45 2.12 1.44 1.13 0.89
>
> 4K
> 3.94 3.45 2.12 1.44 1.13 0.89
>
> just to compare number in a more "realistic" way
> here is a run down on each tranny on 205.50.15 @5000rpm
> on each gear...the result was calculated by
> scirocco.org "gear" sheet. here are the recorded results
> @5000 RPM
> Tranny 4k 9A
> 1rst 25MPH 27MPH
> 2nd 41MPH 44MPH
> 3rd 60MPH 64MPH
> 4th 77MPH 82MPH
> 5th 97MPH 105MPH
>
>
> THe 9a tranny WOULD be the tranny to have over the 4k,
> unless I am NOT understading the physic of
> transmissions, can someone enlightent me without
> bashing my head into a cement wall and setting my arse
> in fire okay?
>
> Thanks for Technical information here...
>
> ATS - Patrick Bureau
>
>
>
> ATS - Patrick Bureau
> 'HWB2002 - HouSton TX'
> > AFAIK all 020 tranmissions (as in all the tranmission specific part
numbers
> > are of the format 020 XXX XXX) have the same drive flange seals, so this
> > shouldn't be a big issue. Have you been identifying them as drive flange
> > seals or output shaft seals? That may be the confusion. 84 is a good
year to
> > identify the 4K.
> > Also, AFAIK the 1.8 L MK II Scirocco only came with the 4K tranny until
they
> > switched over to the 9A. For sure that happened sometime in 86, but it
may
> > have happened earlier.
> > The 4K is THE performance transmission for the Scirocco. If cruising
down
> > the highway at high RPM bothers you, you can change out 5th (currently
.89)
> > to a .80 or .75 or .71 gear. It's as durable as any 020 gearbox. Mine
has
> > 225K miles of hard use.
> > Dan
> >
> > ----- Original Message -----
> > From: Robbie Cotner <robw_z@yahoo.com>
> > To: <scirocco-l@scirocco.org>
> > Sent: Saturday, April 06, 2002 2:38 PM
> > Subject: What tranny is this?
> >
> >
> > > For all I know this question is extremely stupid, but
> > > I haven't been able to find the right output shaft(or
> > > drive flange) seals for my scirocco. The tranny is
> > > out of a Rocco with a production date of 3/84, and on
> > > the case is stamped -4K12034- Inside the bellhousing
> > > it says -020 301 107 H- It also says -11a WWO- but
> > > that looks unimportant. Is this the car's original
> > > tranny? Everyplace I've gone to and asked for an
> > > output shaft seal, I get the wrong size(can't recall
> > > if it was too big or too small). So I either need to
> > > know what year this tranny is, or what year I should
> > > tell NAPA(or others) my tranny is(Manipulation
> > > sometimes required when going to places like that)
> > > last but not least, is this considered a "good" tranny
> > > model. How durable are they, this one already has
> > > 170k on it. Thanks in advance-
> > > Rob
> > >
> > > __________________________________________________
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