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Reply to "Grinds in 2nd and 3rd"

Moose, since I have not had my ZF apart, I cannot argue about the material of the sychros.
If it is true, that is a ludicrous thing to do.
That would make it steel to steel and the sychros could friction weld themselves to the gear. I find that difficult to believe.
Having said that, the gears have the same tooth pattern on them as the sychros.
They look more like the gear to synchro teeth to me.
Some of the newer transmissions are using fiber sychros and blocking rings. Mostly for weight savings.
Looks like that trannie needs to be opened.
So much for the good old "built proof" ZF huh?
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