vw gearbox codes

[loinfish33]

hi guys I have gearbox with the code cu ...stamped on it does this means its been rebuilt to a 091 gearbox standard ???

[trev]

it's obviously impossible for us to know what's inside your gearbox but if you stick up a photo of it, it'll help us roughly identify it. I.e. a 3-rib gearbox is from a 1600 bus, 5-rib is from a 1800 bus, 6-rib is from a 2 litre bus.

If you suspect it's been rebuilt then it's very hard to know what's inside.

[richbaker78]

I don't think the cu will mean it's rebuilt ....from my memory I think that's a t25 1600 box but it's been a long time so don't count on that info.

[cliffardo]

The cu gearbox is from 2ltr late bays, lawn mower 2ltr t25s untill 83. Great box Getting rare as they are used for td and tdi conversions
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Were am I going to get one of them!

[Wilfred]

Here is a list with all possible gearboxes, including gear ratios and end ratio:

http://www.keversite.nl/motoren/vcode.php

You see that the CU box originally was the very common box for the 1600 VW t2.
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1973 BayWindow running 1.9 110 bhp TDI with flipped gearbox.