Question about the 100mm output flange swap into 01E gearbox:

I have brand new flanges and seals and installed 1 side into the 01E and stopped....they sit about 5-6mm further out from the gearbox than do the 108mm which sit nice and flush against the box and thus into the seal. Is this to be expected or do I need to have them machined down to match the 108mm flange length?

Thanks

they use difrent style midle bolts, one of them r cone style another just regular style you can not mix them

first off what are your flanges from?? i used two right side rear flanges from a 90 diff.

details are a bit fuzzy but i remember the bolts being an issue, one set of bolts were conical style while the other were flat. i remember we (hank) had to machine the flanges so they had a flat surface to sit on.

infact looking back at pictures it looks like they might have been machined down after all:



Cone:


Machined for flat bolt:


Ahh yes, here is a picture, showing the different lengths of them, this is something that i don't remember being documented in the swap thread...



the clean oil one on the right is the 01e, the other is the diff flange.

I have gone back and forth with flanges using 016 5Kq ones, did not need to do any machining, just need to make shore correct bolts need to be used

Got part #'s via searching the swap thread...
088 409 355 C
using these bolts...
N 044 714 1
and oil seals...
b 016 409 399 B


What part of the flange was machined?

Thanks

By chance you have the part #'s?


Thanks

I do not have pn s, but now im thinking my statement above is wrong, you can use 016 4k flanges not the 5K ones, I did learn that hard way

I used the original 016 flanges from my 4kq on the 01E that is in my car now. Straight swap with flanges and bolts.

Any leaks?

i just said that or didnt

no leaks

Will these 100mm fanges swap to a 2000 Passat 5 speed? What year/model has 100mm flanges?

4kq trans output cups at ffront, 80/90/4kq one side of rear dif


not sure on passat stuff