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05-08-2017, 05:30 PM | #1 |
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Stromberg 97 Choke Screw Thread...
Does anyone know what thread the choke fulcrum screw is?
This is the large headed shouldered bolt that the choke linkage pivots on. Mine has stripped I the carb top and I'd like to helicoil it. Thanks. |
05-08-2017, 05:52 PM | #2 |
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Re: Stromberg 97 Choke Screw Thread...
12-28
Charlie ny |
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05-08-2017, 06:20 PM | #3 |
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Re: Stromberg 97 Choke Screw Thread...
UNF?
I thought all the fixings were UNC? |
05-08-2017, 06:25 PM | #4 |
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Re: Stromberg 97 Choke Screw Thread...
12-28 is SAE, fine thread. 12-24 is USS, course,
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05-08-2017, 07:06 PM | #5 |
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Re: Stromberg 97 Choke Screw Thread...
I searched everywhere for helicoils for these damn things.
Finally ordered them from a company in France. www.threadtoolsupply.com Not cheap.
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RIP Tyler... My Son, Helper & Best Friend. Feb '78 to Father's Day '10. www.97-express.com ~ [email protected] |
05-08-2017, 07:24 PM | #6 |
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Re: Stromberg 97 Choke Screw Thread...
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Phil NZ. |
05-08-2017, 08:54 PM | #7 |
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Re: Stromberg 97 Choke Screw Thread...
I had the same issue and used this Loctite product and was happy with the result.
http://na.henkel-adhesives.com/produ...=8797876355073 |
05-09-2017, 05:57 AM | #8 |
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Re: Stromberg 97 Choke Screw Thread...
Why not send your carburetor top ( air horn ) to Charlie NY. He has repaired many stripped holes in carb tops for me.
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05-09-2017, 07:46 AM | #9 |
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Re: Stromberg 97 Choke Screw Thread...
Enbloc,
Over time I've sort developed a Stromberg rescue service at the request of Nick, Max and others. For this repair I fixture the air horn and open up the stripped 12-28 to 5/16 -24 and thread in a brass bushing which I've already tapped a 12-28 thread into. This is a life time repair. Removal of power valves, idle tubes, 'j' tubes etc etc USUALLY are no problem. Charlie ny |
05-09-2017, 08:28 AM | #10 | |
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Re: Stromberg 97 Choke Screw Thread...
Quote:
Charlie is Da Man! |
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05-09-2017, 05:34 PM | #11 |
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Re: Stromberg 97 Choke Screw Thread...
Upwards of 30 otherwise roached 97's saved by that Charlie guy!
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05-09-2017, 06:00 PM | #12 | |
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Re: Stromberg 97 Choke Screw Thread...
Thanks for all the help.
Quote:
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05-09-2017, 07:05 PM | #13 |
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Re: Stromberg 97 Choke Screw Thread...
Enbloc,
I will bet you know someone with a lathe and a steady hand at a drill press or mill (preferred) that can facilitate the repair described. "Don't never throw anything away", to quote a fellow Barner. Charlie |
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