Guest chip.deson Posted January 4, 2007 Report Share Posted January 4, 2007 I avoided a real calamity when the bolt that attaches the front belt pulley to the crankshaft decided to remove itself -- without my permission. The good news is that I found the bolt and have located a new star lock washer. The bad news is that the threads on the bold/nut (and possibly inside the crank) are suspect. Do any of you guys have a tap and die that I might borrow/rent/buy that will work. The threads are 1 1/8" and 14 TPI (threads per inch). New ones cost a fortune and I will hopefully need this only once. Let me know! Chip DeSon 949.246.2507 cjdeson@cox.net '48 Plymouth Convertible Coupe Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted January 4, 2007 Report Share Posted January 4, 2007 Just checked my stock..only 1 1/8 tap I have is a 7 TPS NC.... Go find yourself a thread file..if you can't find that..an old trick on the bolt could be finding the correct nut and start it by hand..turn it a bit and tap all the flats with a hammer..thread it some more and continue tapping the flats..it will eventually reshape the bolts.. Quote Link to comment Share on other sites More sharing options...
Guest chip.deson Posted January 4, 2007 Report Share Posted January 4, 2007 Good ideas -- how about the threads in the crank? Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted January 4, 2007 Report Share Posted January 4, 2007 not sure there..the standard 7/16-14 tap mayb be used to try and clean it up using as a file maybe..threads will not be quite a deep but could maybe get it started... I would do my best to go to a machine shop and see about the loan of the tool based on a good deposit till you return it.. Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted January 4, 2007 Report Share Posted January 4, 2007 There are internal thread files available too. I think we have one at work, somewhere. It works like a reverse pliers, spreading the jaws when you squeeze the handles. There are differnet thread pitch bits than go on the ends. If I think of it tomorrow, I'll try to find it to see what brand name is on it. It works pretty slick. Merle Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted January 4, 2007 Report Share Posted January 4, 2007 Attached is a pic of the internal thread chase that we have. Internal thread chase on the left, with misc bits, and external thread file on the right (available almost anywhere) I don't remember where we got it, but it is from Widell Industries http://www.widell.com/ Looks like Fastenal is one of their distributors. Maybe that's where we got it. We do a fair amount of business with Fastenal. I don't know if this helps you or not. Good luck Merle Quote Link to comment Share on other sites More sharing options...
Tim Frank Posted January 4, 2007 Report Share Posted January 4, 2007 Are you sure of the thread spec? The NF series at 1-1/8" is 12 TPI. I would be surprised if they used a Special for this app. Could it be 1-1/8-12NF? Quote Link to comment Share on other sites More sharing options...
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