in need of a studs opinions!!!

[wholio94112]

yesterday removing the heat exchangers on my 86 930...6 remained in their respective cylinder heads, 4 completely spun out along with the barrel nut or plain nut, and 2 of them still remain, snapped to flush with the edge of the cylinder head down below...no one i would take my porsche to will touch it, i would really love to avoid having to drop the engine and tranny - and I'm thinking the stromski racing removal jig sounds prompting, but so did the 2 other "easy-out" renditions of a simple solution sound before amplifying the reality of 2 broken studs...
...any opinions, recommendations, etc would be greatly appreciated...oh I'm in the los angeles area!!!
thanks,
AaRoN

[Flieger]

Nice Westy.

[wholio94112]

no way a thousand oakie!!!i just came into simi valley before san fernando started poking around...

[MBruns]

If Stomski makes a fixture to drill a broken stud buy it, They drill pretty easily IF you can keep the drill true, I have done many freehand but the results vary, a jig will make it much easier and either pull the "spring" out and check the threads or install a time sert and be done.
Good luck, you have one shot to get it right or you will have to pull it
Mike Bruns

[KTL]

Steve Stomski is good people. I think his tool came out as a result of the tool that one of our Pelicans came up with? His circlip injector is a sweet tool too. He was recently kind enough to share some dimensions with me for modifying his mechanical cam chain tensioners. Nice guy.

Don't worry if you screw it up. You can drill it out larger for a time sert. Still have to make sure you get it straight. A crooked stud makes installing your exhaust a real pain.

[irobertson]

I had 8 busted studs when I took my motor apart, and I used Steve Stomski's tool to get them out. Worked like a charm. The only thing I found was that the port insert that was sized for my heads was too tight to fit. I just put a couple of wraps of electrical tape on the next smaller one which was slightly loose, and trimmed it off flush with an Olfa knife. That made it a nice snug fit, and as a result all my drilling was centred perfectly.
Get a good strong set of dental picks to pick out the remaining thread coils from the holes, and you're all set. If you can't get the remaining bits out with a pick, then use the provided tap, but go slowly and back out often to clean off the shards.
Oh, yes my motor was out, but I have heard of other guys that you can do this from below as well.
Good luck

[wholio94112]

...a very belated thank you to all ya'll...working from underneath took its time...i had to practically dig one of the studs out with dental picks...not fun being a dentist...bought a left handed cobalt drill bit and was able to "unscrew" the cleanest of the broken studs right on out...
...something about these kind of discoveries after buying someone else's car makes me think an engine drop - inspection is in order...got an oil leak coming from up high...will go with the stromski tool fixture should any more studs snap!!!
...thanks again!!!

[Jitters]

Congratulations on getting this sorted out successfully.