ASF and ACN transmission codes

[drew at scirocco.cs.uoguelph.ca (Drew MacPherson)]

ASF is 100mm flange, ACN is most likely 90 (unless they were changed out 
by a previous owner.)  You can swap 90 mm flanges to the ASF, but you'll 
want to replace the driveshaft seals.

ASF has a 2 pole reverse light switch in the case, ACN has a reverse light 
switch/shift light switch.  Unless your scirocco didn't have an upshift 
light, you'll have to modify your reverselight switch wiring (not a big 
deal at all.)

Other than these two differences, ASF and ACN are pretty much the same 
beast.

HTH,

Drew

On Fri, 17 Oct 2003, Max Tremblay wrote:

> Well I went junkyard hunting this morning (good way to
> start the day) and found 2 gearboxes that i can get. i
> have to pull it myself but they're only 125$ , maybe i
> could get both for cheap. Anyways, 
> one is a ASF, out of a Jetta with 112,000 miles (code
> 15118-3)
> 
> the other is ACN, also out of a Jetta but unknown
> miles (code 20026)
> 
> it appears the gear ratios are the same in both of
> these, according to This website .
> 
> That is, they have a 3.67 final drive and a .75 5th
> gear...
> 
> My main questions are:
> 
> are the input shafts the same size (ie dont need to
> change clutch)
> are the driveflanges 100mm? If not, i can use my 4k's
> driveflanges?
> i can transfer my 80% limited slip right on?
> 
> Anyone have one of these in their rocco? i love the
> idea of going 75 mph at 3000 rpm..
> 
> 
> 
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