<VV> Spark plug thread repair - ??

[J R Read_HML]

Possibly this?

http://fulltorque.com/LOCK-N-STITCH.htm

Hard to say since there are no (real) pictures.  There IS a PDF available, 
so maybe the pictures are there?

Later, JR


----- Original Message ----- 
From: "Ron" <ronh at owt.com>
To: <dougmackintosh at yahoo.com>; "Virtual Vairs" <virtualvairs at corvair.org>
Sent: Sunday, September 14, 2008 10:18 PM
Subject: Re: <VV> Spark plug thread repair - ??


> It looks like an incompletely installed thread insert but not a helicoil.
> Someone will recognize exactly what it is, I hope, but it sure looks like 
> it
> can be unscrewed after which I'd try to screw in a new replacement, making
> sure that it goes in all the way.  Search the internet for thread inserts
> and see if any match up with the one you have.  If one does, call the
> manufacturer for some removal techniques.
>
> RonH
>
> ----- Original Message ----- 
> From: "Doug Mackintosh" <dougmackintosh at yahoo.com>
> To: "Virtual Vairs" <virtualvairs at corvair.org>
> Sent: Sunday, September 14, 2008 7:28 PM
> Subject: <VV> Spark plug thread repair - ??
>
>
>> I've never seen anything like this before. Can anyone tell me what I'm
>> looking at, and any ideas how to fix it?
>>
>> This is on the mongrel Corvair I am working on. The engine is (mostly)
>> 1965 110 HP. The # 6 spark plug hole has this protrusion, which I assume
>> is part of some attempt at thread repair. As you can see, it protrudes
>> (approx 1/8 inch) from the head. The surface the plug gasket would seat 
>> on
>> is a narrow edge (not a nice wide gasket seat as would normally be in the
>> head). The threads go partway down the hole. Where the threads/insert 
>> end,
>> the hole in the head is larger diameter. The threads also stop short of
>> the top - there is a small (1/32" ?) counterbore in the top before the
>> threads start. Here is a link to a photo:
>>
>> http://www.flickr.com/photos/30499360@N07/2858425990/
>>
>> Does this look familiar to anyone? Does anyone know what to do about it? 
>> I
>> hesitate to do anything since at this point, I don't understand how it 
>> was
>> installed.
>>
>> Thanks
>>
>> -- Doug Mackintosh
>> Corsa member since 1996
>> Corsa/NC member since 1996, Virtual Vairs member
>> Corvair owner 1969-1971 and 1996-on
>>
>>
>>
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>
>
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