901 Synchros

So I have a simple question. At least I hope it's simple. I want to rebuild my 901 transmission and was going to try to order sychros for it. Looking at the PET catalog, it appears that all 5 synchros are the same size. Is that correct? I'm being told from some local guys that the 1st gear synchro is larger. Can anyone confirm?

Thanks

Chris

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Originally Posted by chris belyea

Looking at the PET catalog, it appears that all 5 synchros are the same size. Is that correct? I'm being told from some local guys that the 1st gear synchro is larger...

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Chris, a 901 transmission uses the same synchro ring for all gears. A 915 transmission uses larger synchro rings in 1st and 2nd.

Jon B.
Vista, CA

Thanks Jon. Do you have a recommendation on brands? I see OEM and Rauch & Spiegel. Is one better or worse than the other?

Chris

Synchro rings are just part of the equation , what about the sliders ? A 901 with good used synchros and new slider rings will shift really well . New style stop blocks , energizers and brake bands make a difference also .

If you open up your 901, you will want to swap out all the bearings too.

Thanks all for the advice.

Chris

Does anyone have recent experience on what someone would expect to put out ($$$) for the entire parts list for a complete rebuild? bearings, synchros, slider rings, stop blocks, energizers and brake bands? Seals, etc....????

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