2.7 pulled stud solution?

[mark 74 carrera]

I know this may sound a little far fetched, but here goes. Has anyone ever thought or tried to place "nuts" at the end of the studs from the inside of the case? If you look at dtw's pictures of his half case, it appears that the studs thread into the crankcase mounts. Would it be possible to machine in sideways and take out enough material to allow a nut to be installed. The studs would then thread into a steel nut w/ washer that would be held by the case itself instead of just the threads of the case.

It would seem to me at that point you would have enough surface area of material to prevent the pulling out problem. I have never worked on a 911 engine, but will be re-building a 2.7 later this year. I have e-mailed Bruce Anderson about what could be done to bullet-proof a 2.7 and have gotten no response.

I refuse to just give up on the lowly 2.7! Does anyone think this is feasible? Thanks.

[HawgRyder]

We used to do this type of "fix" on big bore Harleys.
It involved milling a slot sideways in the bore hole under the cylinder bolt hole and pushing in a piece of steel that had a threaded hole in it.
The piece looked like a half moon or a large woodruff key.
This would repair a pulled hole.
To simply brace the already threaded hole...the piece was not threaded prior to insertion...just drilled...then threade afterwards to continue the case thread.
Very touchy work...not sure there is as much meat in a porsche case as there is in a harley case.
Bob

[Wayne 962]

Sounds like it might be doable, but in all honest, the case savers do the job very nicely. You would really have to work hard to pull out properly installed case savers. When I asked Walt (Competition Engineering), he couldn't recall ever seeing a case saver (not a TimeCert) that had pulled out of the case.

The bottomline is that if you have the case professionally gone over with case savers, you should be more than protected...

-Wayne

[Bobboloo]

It seems it would work if you don't mind the oil leaking or chancing it working it's way loose inside the case, that is unless done in the manner Bob mentions.