Quote Originally Posted by gled49 View Post
I've disassembled dozens of the 904 diffs for gearbox rebuilds and have never seen a pressure wavy plate in those diffs, unlike the next generation which used the wavy plate for static preload. The outer and inner lamina in the 904's were flat and diffs had no preload. Gordon
We already have the 88mm plates from the later diffs but we have some 904 diffs without theses plates and I would like to fit them as they are shown in the Workshop manual.



I think that the same basic tooling that is used to make the 88mm plate may work but I would like to have a spare early plate to be sure that we do the job properly.

I only plan to make around 6 or 8 plates so it is unlikely we will offer to sell them and I guess demand would be very limited.