Hi, type1 shims will not work on a type4 engine.
The type 1 crank size (at the front bearing where the shims fit) is 55mm ,and the type 4 is 60mm. you could get them in the same thicknes, but like I said they would not fit over the crank because there ID is to small.
On a type 4 you can use 2 shims or more, never les.
BTW,shims from a wasserboxer will work.
Regards Hermann.
