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62 American front brake drum size |
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58American! 
AMC Apprentice 
Joined: Nov/26/2020 Location: Kansas Status: Offline Points: 44 |
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 Posted: Dec/11/2020 at 10:43pm |
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Took 2 rear drums to the machine shop and had them open the hub holes on their lathe to fit the front hub. Looks like a good fit. There's a mild difference in that the stock drums have a lightly raised lip right at the hub hole and are a mild interference fit. The cut drums are more of a slip fit, but I don't see any reason why they won't work. And the price was good. Two drums from RA were $40, and I paid $40 for the machine work, so $80 for the pair. I'll let you know if there are any unexpected problems, but I don't anticipate any. I took photos but don't see any way to post them?
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ramblinrev
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Joined: Dec/28/2008 Location: Wisconsin Status: Online Points: 11545 |
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Posted: Dec/12/2020 at 7:47am |
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Sounds like a good solution! The lug bolts should hold that drum in place just fine. You are at a disadvantage for posting photos as a new member....30 points are needed before you can do that. (It was intended to keep out spammers, and it does that pretty well!) You can email me a pic and I'll post it. paul.mittermaier@gmail.com
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74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
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58American!
AMC Apprentice
Joined: Nov/26/2020 Location: Kansas Status: Offline Points: 44 |
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Posted: Dec/12/2020 at 7:57am |
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Ah, that explains the photo issue, must have missed that during sign up. Photos on the way.
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ramblinrev
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Joined: Dec/28/2008 Location: Wisconsin Status: Online Points: 11545 |
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Posted: Dec/12/2020 at 3:58pm |
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74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
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58American!
AMC Apprentice
Joined: Nov/26/2020 Location: Kansas Status: Offline Points: 44 |
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Posted: Dec/12/2020 at 5:41pm |
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Thanks for posting the pic RamblinRev! Unmodified rear drums to the left, cut drums to the right, and a stock front drum on top.
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ramblinrev
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Joined: Dec/28/2008 Location: Wisconsin Status: Online Points: 11545 |
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Posted: Dec/12/2020 at 6:18pm |
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Great picture! And a good option for us early American owners who have trouble locating front drums! Thanks!
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74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
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tomj
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Joined: Jan/27/2010 Location: earth Status: Offline Points: 7555 |
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Posted: Dec/12/2020 at 8:41pm |
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Nice fix. Precise centering would be the only issue. Glad to know that center hole diam. is the only difference.
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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com |
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58American!
AMC Apprentice
Joined: Nov/26/2020 Location: Kansas Status: Offline Points: 44 |
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Posted: Dec/13/2020 at 12:24am |
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Doc is a pretty amazing machinist so I expect the centering was precise; he's pretty anal. He rebuilt the cylinder head for me, fitting valves with chromed stems intended for a 1988 or thereabouts Ford Ranger with the 2.0 OHC four so he could fit positive lock valve seals to lightly modified valve guides. Springs are for a Cummins with modified IHC keepers! Doc is an old-school machinist, years of work ranging from high-output drag engines to vintage tractors. He did the head work on my Laverda 1000 triple motorcycle engine, not a job for the uninitiated!
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58American!
AMC Apprentice
Joined: Nov/26/2020 Location: Kansas Status: Offline Points: 44 |
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Posted: Dec/13/2020 at 10:01am |
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One possible issue has surfaced, and it has nothing to do with the drums, but removal of the original wheel studs. I used a press, supporting the hub on the back side. Worked fine, studs popped out with a bang, literally. In hindsight, I would take the trouble to find the correct swaging cutting bit for removing the studs. From the factory, they are swaged to the drum/hub to lock and center them. Pressing the swaged studs out seems, at least in my case, to stress the hub holes, making them loose. I ended up using all new studs for the hubs, with red Loctite to encourage them to keep their hold. A couple of them seemed uncomfortable easy to whack in place.
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