G50 Broken Fork Mount - Input needed

[chstephens5219]

Over Labor Day weekend, my dedicated 911 race car had a failure in the bell-housing. It is a 5 speed G50 with a shortened bell-housing to fit a 1985 911.

One of the cast mounts in the bell-housing failed (photo), so the fork cannot pivot on the throw out bearing. I'm looking for input on repair options. This is a dedicated race car so I'm not committed an OEM solution.

A new bell-housing with machining to shorten costs nearly as much as a used G50 (which would also required machining on the bell-housing). I really don't want to go down that road.

A few thoughts.

1. Has anyone ever rebuilt a mount in the bell-housing? How did you do this?
2. FYI - I can't weld the original mount because the broken piece is missing
3. Has anyone configured another fork/mount solution? For example on the outside of the bell-housing with reinforced mounting points?
4. Has anyone configured a hydraulic throw out bearing to work with a G50? Room/clearance could be an issue

Thanks in advance for any input. Craig

[Matt Monson]

California Motorsports.

[chstephens5219]

Originally Posted by Matt Monson

California Motorsports.

This is exactly what I needed to find. Thank you Matt.

Craig

[Matt Monson]

You're welcome. They do quality work and a quick turnaround. If you are serious about going hydraulic over a repair, they can do that conversion as well.

[Cory M]

The G50 in my racecar broke the same way and was fixed by California Motorsports about 8 years ago and it's been fine since.

[chstephens5219]

Originally Posted by Cory M

The G50 in my racecar broke the same way and was fixed by California Motorsports about 8 years ago and it's been fine since.

Great to hear. Thanks for the info.

Craig

[chstephens5219]

Originally Posted by Cory M

The G50 in my racecar broke the same way and was fixed by California Motorsports about 8 years ago and it's been fine since.

Cory, Did you replace both mounts or only the broken one?

[Cory M]

Both mounts were fixed. I think that that is the standard way they do it.

[DanielDudley]

Pardon my ignorance, but what is it exactly that causes this failure, and is it common ?

[chstephens5219]

Originally Posted by DanielDudley

Pardon my ignorance, but what is it exactly that causes this failure, and is it common ?

This is caused by fatigue/stress on the aluminum cast mount. It is unlikely to fail on a street car or occasionally tracked car with OEM clutch components. Add more HP, a high friction disc and high clamp pressure plate.....this can happen.

[Quicksilver]

Another nice detail about California Motorsports is they have more reasonable pricing then a lot of places.

But "Yes", they are the G50 kings.