997S Gearbox Failure

[Ian_UK1]

Has anyone got any experience of gearbox failures on 997S.1 cars? I was just pulling away in 1st gear and heard a metallic 'ping' from under my car. 1st gear is now very noisy (rattly) as is the gearbox when in neutral with the clutch engaged. 2nd to 6th are all quiet (but I only drove a few hundred yards to get the car back home). The gear change is still normal (even into first). I'd noticed the gearbox was getting harder and harder to get into first over recent weeks, especially when cold. My local independent is collecting the car tomorrow and tell me they can get parts for these 'boxes. Just wondered if anyone was familiar with the internals and might have any idea what might have happened? Thanks

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[NorthVan]

wow! Ian you have to have some of the worst luck of anyone on this forum. Sorry to hear about another problem with your car.

[utkinpol]

Originally Posted by Ian_UK1

Has anyone got any experience of gearbox failures on 997S.1 cars?

I was just pulling away in 1st gear and heard a metallic 'ping' from under my car. 1st gear is now very noisy (rattly) as is the gearbox when in neutral with the clutch engaged. 2nd to 6th are all quiet (but I only drove a few hundred yards to get the car back home). The gear change is still normal (even into first). I'd noticed the gearbox was getting harder and harder to get into first over recent weeks, especially when cold.

My local independent is collecting the car tomorrow and tell me they can get parts for these 'boxes. Just wondered if anyone was familiar with the internals and might have any idea what might have happened?

Thanks

do not drive on 1st any more, if it got a tooth cracked or completely separated it may (and probably already did) damage other wheel it gets in contact with. you better tow car now.

if broken out metal piece will get into other working gears it may(will) destroy entire gearbox. if you`re lucky you may need to replace a single damaged wheel only.

[Ian_UK1]

Originally Posted by NorthVan997C2S

wow! Ian you have to have some of the worst luck of anyone on this forum. Sorry to hear about another problem with your car.

One of those things..... To be honest everything else has turned out to be quite minor - an ECU reflash and MAF solved all the rough running and the stuck valve lifter freed itself so - 'touch wood' - it's not been too bad.

My independent has a feeling the first gear problem might not be too serious either as it's separate to the rest of the gear chain in the box (apparently) and more accessible than the others. Fingers crossed......!

[Ian_UK1]

Originally Posted by utkinpol

do not drive on 1st any more, if it got a tooth cracked or completely separated it may (and probably already did) damage other wheel it gets in contact with. you better tow car now.

if broken out metal piece will get into other working gears it may(will) destroy entire gearbox. if you`re lucky you may need to replace a single damaged wheel only.

Thanks for the (excellent) advice. I think you're absolutely right so the car's being trailered to the shop tomorrow.

[04GT3RS]

Ian
I have seen the synchro ring break in the form of a fracture and it will not allow proper engagement. The other thing that ocurs is the dog teeth are pressed and come off the gear itself.

[Kerrigan Smith]

Ian,

If they do have to pull the box off the engine now would be the time to look at the clutch and at the very least replace the throw out bearing.

Sorry to hear and I hope it does turn out to be something simple.