Jocko_51_B3B Posted September 17, 2021 Report Share Posted September 17, 2021 (edited) Three of the threaded holes for the air horn mounting screws were stripped by a previous owner. The screws are 10-24 RH so I ordered a Helicoil kit from McMaster-Carr, kit part number 91732A914. I wasn't sure at first whether it would be wise to change over to fine threads, but some online research told me that fine threads would be wrong for a soft metal like aluminum (too easy to strip) so I stuck with 10-24. Only other considerations were to remove the float and drain the gas out of the bowl (which I sucked out with a syringe) before drilling to avoid starting a fire and to mask off the carb body to avoid chips falling into the carb. Problem solved. I helicoil'd all four holes and I replaced the screws with allens because one of my originals was mismatched and I couldn't find the right style at the hardware store. . Finished... Edited September 17, 2021 by Jocko_51_B3B better wording 4 Quote Link to comment Share on other sites More sharing options...
ggdad1951 Posted September 17, 2021 Report Share Posted September 17, 2021 You done good! SOOOO easy to want to overtighten and strip those bolts/screws to try and stop leaks/weeps. 1 Quote Link to comment Share on other sites More sharing options...
Dodgeb4ya Posted September 17, 2021 Report Share Posted September 17, 2021 Excellent repair....might also want to check the flatness of the air horn gasket surface on some plate glass or similar flat surface. 2 Quote Link to comment Share on other sites More sharing options...
JBNeal Posted September 17, 2021 Report Share Posted September 17, 2021 them fillister head screws are kinda specialized these days...somebody like Carburetor Specialist might be able to help out if ya want that original look 1 Quote Link to comment Share on other sites More sharing options...
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