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Machinists repair advice #2069824
05/09/16 01:11 AM
05/09/16 01:11 AM
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Staten Island, NY
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RO23dave Offline OP
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Staten Island, NY
Just put the motor back into the car & reattached the starter. Th e bottom threaded bolt hole in the trans stripped out. Can a helicoil or similar kit be used to repair the thread to the stock size, being this is a straight thru hole and not the kind where you have to break off that tab once the helicoil is screwed in? As a temporary fix gonna get a longer bolt with nylock nut, unless someone has a suggestion that I can do that immediately. Thanks in advance Dave SS/da #1355 fury

Re: Machinists repair advice [Re: RO23dave] #2069868
05/09/16 02:19 AM
05/09/16 02:19 AM
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Lincoln Nebraska
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RapidRobert Offline
Circle Track
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can you just use a regular bolt (is there room/flat area to use a nut on the back side of it)


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Re: Machinists repair advice [Re: RO23dave] #2069884
05/09/16 03:27 AM
05/09/16 03:27 AM
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northwest USA
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NANKET Offline
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Helicoils are great, use one there.

Re: Machinists repair advice [Re: RO23dave] #2069976
05/09/16 11:15 AM
05/09/16 11:15 AM
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Posts: 14,889
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Supercuda Offline
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Yes you can use the helicoil, the tab is there to allow the tool to install the helicoil, you still need to break it off but a pair of needle nose pliers on the tab side of the hole makes it easy.


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Re: Machinists repair advice [Re: RO23dave] #2070016
05/09/16 12:23 PM
05/09/16 12:23 PM
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U.S.S.A.
JohnRR Online rolleyes
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U.S.S.A.
Yes a helicoil will work find there , I done a couple of 727's were I had to helicoil about 10 holes because they were stripped out over the years.


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Re: Machinists repair advice [Re: JohnRR] #2070548
05/10/16 02:27 AM
05/10/16 02:27 AM
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Posts: 303
Staten Island, NY
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RO23dave Offline OP
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Thanks guys Dave SS/ea #1355 fury

Re: Machinists repair advice [Re: RO23dave] #2070811
05/10/16 02:48 PM
05/10/16 02:48 PM
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Posts: 16,376
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dogdays Offline
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Permatex Form-A-Thread. I used it on a stripped hole on a frying pan with great success. Clean Clean Clean and be sure to use the release agent on the bolt.

Helicoils require drilling and tapping with the next size tap, although it's a special tap. If you don't know someone who uses Helicoils regularly, the price will shock you when you go to get a kit. I found the best deals on Ebay.

Although Helicoils are better, the Form-A-Thread is surprisingly strong and should be considered.

R.

Last edited by dogdays; 05/10/16 02:52 PM.
Re: Machinists repair advice [Re: RO23dave] #2070830
05/10/16 03:12 PM
05/10/16 03:12 PM
Joined: Sep 2007
Posts: 14,889
up yours
Supercuda Offline
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Assuming it's 3/8-16, IIRC, then it's $20 for the kit.

http://www.summitracing.com/parts/hll-5521-6

You will also need the correct 25/64" drill bit if you do not have it.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
Re: Machinists repair advice [Re: Supercuda] #2070845
05/10/16 03:36 PM
05/10/16 03:36 PM
Joined: Jan 2003
Posts: 25,836
Rio Linda, CA
John_Kunkel Offline
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Rio Linda, CA

Starter threads are 7/16"-14. Bottom hole gets a stud, not a bolt.


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