To go along with the CV's, here is the axle line
up. These are what the average Joe will run for axles so there should not
be any surprises here. The axles that we have at the moment to compare are
as follows in the pic:
First - Vanagon (unknown years)
Second - Type 2 (bus '74-'79)
Third - Type 1 (bug)
Bottom - Porsche 924/944/ - VW 181 Thing
Axle
length
Spline length
Vanagon = 20-1/2" long
21-1/4" long Vanagon = 34mm
21-1/2" Long
22-1/2" Long
Aftermarket arms will fit the following axles
2x3 arms fit early bus IRS axles at 18-3/4" long
3x3 arms fit custom 19-1/4" axles
4x5 arms fit vanagon automatic transmission left side axles at 20-1/2"
5x5 arms fit vanagon five speed axles at 21-1/2" - These are the most common
6x6 arms fit vanagon automatic transmission right side at 22-1/2"
**The vanagon automatic axles are proving hard to find in wrecking yards and
junk piles
Bus = 18-3/4"
long
Bus = 34mm
Bug =
16-5/16"
Bug = 28mm
Porsche/181 =
16-1/8"
Porsche/181 = 33mm
The Bug spline length is not long enough to use
the Type 2/Type 4 CV's without milling the shoulder down for snap ring
clearance. If milling (lathe work) is done, the axle will be weaker, and
can snap right in that area. The Type 2 and Type 4 CV's have the
same width center cage (28mm), so they are basically interchangeable between
each other's axles and no need for milling. -CC