porsche325

so my transmission is done. It will need to be rebuilt. It is an 89 with 80,000 on it. What should I expect for a good and fair job? I've never had that done on any of my porsches so it is a first for me.

Amber Gramps

It will be well worth the time to call Steve Weiner at Rennsport Systems.

User 4221

As a reference..... In 2010, I had the engine/trans out of my '89 for a clutch. While I was in there, I addressed several issues including a few minor issues with the transmission.

As a preemptive measure, I had all the synchros replaced along with a few bearings that were showing wear. All in, the work was $2,500. There are gears and bearings in the trans that are $400-$500 each so a rebuild can get expensive quickly.

What symptoms are you experiencing? That may be a better way to start the query.

GTgears

No good gearbox mechanic will give you anything but a range before they take it apart and do an autopsy.

That said, labor rates for a rebuild are generally $800-1200. From there it's parts. Expect to spend $3-4k on the job if we are talking just bearings, synchros, and dog teeth and slider hub assemblies. If it has something major wrong it could be double or triple that. A ring and pinion is a $3000 part and adds $500 labor to the job, for example.

Spyerx

Wow done at 80? Mine has 89 on it never opened shifts fantastic.... clutch is going and getting replaced though....

Put it in a cooler, ship it to bill rader or one of the other guys that just does trans.

Matt speaks the truth on costs.

theiceman

Wow it definitely seems more expensive to fix a g50 than a 915.

Wachuko

Yes... and thank the gods that it is not a 964 C4 transmission I ended up buying a used one of those not too long ago...

Steve Weiner-Rennsport Systems

They are about the same, now.

GTgears

Yes. 915 synchros, under $100, G50 nearly $200. 915 sliders around $200, G50 sliders almost $800.

User 4221

I forgot to mention that I had deep discounts on parts and labor. My total should have been ~$3,500