[Healeys] Stripped bolt

Mon Oct 26 08:47:31 MDT 2015

Yes, the interesting article said it all and more. “Vice” grips. 

Simon

From: Michael Oritt [mailto:michael.oritt at gmail.com] 
Sent: Monday, October 26, 2015 14:03
To: Simon Lachlan
Cc: Michael; Oudesluys; Austin Healey
Subject: Re: [Healeys] Stripped bolt

I never heard the term "Mole Wrench" and was wondering what the Brits have against the little critters that they would invent still another device to extirpate them.  

Turns out the name "Mole Wrench" derives from a different source....see:

https://en.wikipedia.org/wiki/Thomas_Coughtrie

Best--Michael

On Mon, Oct 26, 2015 at 9:41 AM, Simon Lachlan <simon.lachlan at homecall.co.uk> wrote:

Sounds typically well thought and workable.

But, and isn’t there always a “but”.....once you’ve drilled the head off the bolt and removed the bracket, you’ll have enough bolt sticking out to deal with.

Maybe grab it with a mole wrench and, whilst pulling outwards, screw it out.

Then back to Michael’s scheme....

Only a thought...probably the only one today.

Simon

From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Michael
Sent: Monday, October 26, 2015 12:48
To: Oudesluys; healeys at autox.team.net

Subject: Re: [Healeys] Stripped bolt

Hi Ira,
>From your description it would appear that you have used a "soft" bolt upon which the threads have stripped.
My bet is that there are still good threads on the part of the bolt that has penetrated through into the tappet cavity and good threads in the block albeit filled with the stripped threads from the bolt.
There is a chance that Kees recommendation would work BUT there is also a good chance that as the remaining damaged threads of the bolt are forced into the threads in the block casting those threads, in the block, will be severely damaged. 
If that happens you then have a nasty Helicoil job ahead of you.
My success rate with Helicoils in other than blind holes is about 5% ☹ 
This may sound somewhat labor intensive but here is how I would tackle the problem.
First remove the generator and all the other bolts securing the bracket.
Then center punch the head of the offending bolt and drill through it with progressively larger bits until the head falls off.
Now the bracket can be removed leaving the stub of the bolt protruding.
After stuffing the tappet cavity with rags I would then cut the bolt off flush with the face of the block using a vibrating Multitool.
You should then be able to tap the rest of the bolt through into the tappet cavity to get caught in the rags.
Now run a tap through the hole to clean up the threads and, after cleaning everything thoroughly, you should be good to go....
Good luck.
Michael S
BN1 #174

  _____  

From: Oudesluys <mailto:coudesluijs at chello.nl> 
Sent: ‎26/‎10/‎2015 4:41 a.m.
To: healeys at autox.team.net
Subject: Re: [Healeys] Stripped bolt

Try getting an old knife blade under the head to create some leverage, then turn the head anti-clockwise with the spanner while keeping a moderate force on the knife blade. This usually suffices to get the bolt started.
Kees Oudesluijs

Op 26-10-2015 om 6:07 schreef I Erbs:

Just spins. Never got tight, just a bit snug then it spins. Yup, does not sound good

Ira Erbs
Portland, OR
   _______                                  _______
     (______ \____1959 BN4____/ _______)
         (_________________________)

On Sun, Oct 25, 2015 at 9:53 PM, Bob Spidell <bspidell at comcast.net> wrote:

WRT, the bolt not 'untightening;' are you unable to turn the bolt?  Or does it turn but not back out?

Doesn't sound good either way; if a thread chaser doesn't fix the problem I'm afraid you'll probably need to install a helicoil (or similar) when you do get the bad one out.

Bob

On 10/25/2015 9:18 PM, I Erbs wrote:

Generator plate leaked after I last removed it. Cleaned Right Stuff off, used copper gasket sealer. When removing old bolts i realized the one above the leak spot was not fitting right. retightening bolts and replacing weird one went well. I hand tightened all bolts until firm. One upper bolt would not tighten and now it won't untighten either. Wanky one was a bottom bolt. Any suggestions for removing bad bolt? and clean up the threads ? Shit I'd just like to drive the bugger. 

Mr. Ira Erbs

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