091 super diff.

[seabeebuggy]

I have a 091 that I like to put in my dune buggy. I have a 5 rib 02 in it now and it cost 3500$ for sand. I need a street trans that can handle my turbo and the 31'' tires. I have snapped pro built weddle t1 trans like tooth picks. I just like to get better street speeds and not do 4k rpms and up to do it. I am thinking a super diff with 930 cv flanges should work. Will it? also is it easy to put a super diff in? I have never worked on a trans before but I am good at mechanical things.

[Steve Arndt]

091 have a 4 spider "super" diff stock.

[Tom in PA]

some 091's had super diffs but not all of them came stock that way.
A diff is easy enough to change but you'll need to check your contact pattern and possibly reset your pinion depth/backlash. Those with more experience than myself can chime in on your chances of not needing to do this.

Tom

[seabeebuggy]

oh ok cool. do you know if the trans bolts up the same as a 002 5 rib?

[woodsbuggy1]

It does not bolt up exactly the same the 091 bellhousing it built different. I would use a 3 or 5 rib bellhousing and shorten the input shaft 3/8". This allows you to use a bug starter instead of a 091 starter.
Some 091 transaxles have a factory superdiff but they are pretty rare here in the states.
For the strongest VW transaxle look for an 091 midshift they are strongr in several ways over a nosecone shift 091.
good Luck
Kenric