<VV> Repairing a failed crankcase stud thread repair

[Jim Houston]

This may not be feasible, but a friend of mine used to work in a shop 
that repaired aircraft crankcases.  When he was faced with a stripped 
hole, he would weld it up with a heliarc and then machine the surface 
and retap the hole...  like I said, this may not be possible on a 
Corvair case . . .

Jim Houston

Roger Gault wrote:
> I had to go all the way to 5/8-11 UNC to get into good metal after two of my
> PO's short helicoils pulled out.  Been in there about 20 years now.  I had
> some 5/8 setscrews tapped.  Use a bolt - the setscrews are WAY to hard to
> tap.
>
> Roger
>
>
>   
>> In a  message dated 5/8/2008 8:49:42 PM US Mountain Standard Time,
>> dougmackintosh at yahoo.com writes:
>>
>> Some  miscreant apparently  repaired this one with a short (7/16 long)
>> helicoil,  which has  pulled completely out of the block. From what I have
>> read it
>> looks   like a 0.75 long Big-Sert is the best fix for this.
>>
>> Is that right? And  where can I obtain the part and tool (preferably
>> rental).
>>     
>
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