tod84944

86 951, tensioner stud broke at the start of the threads, in the block. What is the best way to get the rest out??

Mike C.

Assuming there is nothing to grab onto I would use an easy-out and some heat. The stud installed with a strong version of loctite and IIRC, it required some heat to get it moving. Try to center punch in the middle before drilling.

tod84944

Thanks Mike. It is hard to get to, and I don't want to pull the engine to do this.

Charlie

Todd,
You need a right angle air drill. If it is the black 951 tell the owner I will buy it for what he paid for it, as is.

Mike C.

You can get a right angle attachment for any drill for around $20 at Home Depot/Lowes.

tod84944

It is the black 951.
Charlie,
Glad you guys got to come up. Sorry you ended up getting a little dirty!!! Tell Jim to come buy those Boxster rims!!!

Charlie

Todd, we had a great time. I assume this is then tensioning bolt that goes through the oil pump. If it is broke off at the block then I assume you have removed the oil pump. I would try to center punch it, after doing that I would find a steel sleeve that would fit inside the oil pump bolt hole that had just a larger inside diameter than the drill bit I was using. I would put the pump on and use the sleeve to keep the bit centered.

Mike C.

I didn't have to remove the oil pump when mine broke.

15psi

Easy-outs are like Russian roulette but with worst odds. If it breaks off, which it usually does, you are screwed. You now have a hunk of metal in your stud that you can't drill out.

I'd either drill it out and re thread or use a heli-coil. Or my preferred method is the place a nut over the stud (or what's left of it) and MIG/TIG the nut to the stud. I have always been able to remove a stud with this method. Even when the stud is below the surface. Sometimes you need to try it 2-3 times. After the weld and as the bolts cools from orange color, ever so slightly tighten the bolt to break the seal, then loosen it out. Sounds strange but most successful method.

JimB

Peckster

I'd take it to a pro. If you screw it up, it will cost you a LOT of money to put it right.

Problem is a pro won't give you any guarantees.

cruise98

What Charlie said.

None of the few I have removed had loctite on them, so if you can just get a grip on it you should be home free. There is a newer version of the easy out that works much better. If the stud is just below the surface of the oil pump, you can always take the pump off to get the stub out. But what a PITA!!! that is. This is why I always recommend replacing it and is on the parts list for the pre '87's.

tod84944

It is actually broke off just below the surface of the block. I'm going to try a left hand drill. If that dosen't get it out, then I will already have a hole for the easy-out. I will be using some heat!!!

Mike C.

If the easy out won't budge it easily it probably would be better to do a Heli-coil or Timecert. You definitely don't want to break off the easy out in there. So get the original hole as centered as possible. I guess I was lucky on mine....