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Resolved 1g fwd question - lost synchronizer keys

Breadvans

Proven Member
151
11
May 16, 2021
Harrisburg, Oregon
I’m in the process of putting my transmission together and i lost these parts. It’s these little rectangles that hold a clip on, but I’ve also seen on others transmissions that they don’t have them? So i was hoping someone could identify them and how to buy them? And then also elaborate what they do and if they’re necessary? I drew a pic of one of them. There’s 3 that i had

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luv2rallye

DSM Wiseman
8,401
1,176
Jun 7, 2003
Minneapolis, Minnesota
If it's the solid metal rectangles (small box shaped) that I think you're pointing to, they are the synchronizer keys. Yes they are crucial and you must have them or it won't shift properly (keeps synchronizer sleeve in proper alignment). PM Twicks69 for them.
 

luv2rallye

DSM Wiseman
8,401
1,176
Jun 7, 2003
Minneapolis, Minnesota
He means the circular clip looking thing that sits in the hub (1 on each side) and pushes against the keys. It's called a spring because it exerts a springy outward force against the keys.
 
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luv2rallye

DSM Wiseman
8,401
1,176
Jun 7, 2003
Minneapolis, Minnesota
This is the 3-4 hub (instead of your 5th) but you can see the clips holding the keys. This is on my 1999 GST but yours most likely will be similar.

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DSSA

Supporting Vendor
645
463
Jul 26, 2002
Hatfield, Pennsylvania
Depends on when your 1990 was produced.

Production date before 89.02.04 and you'd need MD742778

after that date and through 90.06.01, you'd need MD742777
 

Breadvans

Proven Member
151
11
May 16, 2021
Harrisburg, Oregon
Depends on when your 1990 was produced.

Production date before 89.02.04 and you'd need MD742778

after that date and through 90.06.01, you'd need MD742777
I think I’ve found the correct keys on jacks transmissions. Does anyone where the proper shim kit is for the differential?
 
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