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Flywheel |
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482aguy 
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Joined: 10 Nov. 2019 Location: VT Status: Offline Points: 11 |
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 Topic: FlywheelPosted: 12 Nov. 2019 at 11:33pm |
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Does anyone know how many teeth the flywheel would have on a 48? Did they use different flywheels or are they pretty much standard?
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Mark W.
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Sponsor Member Joined: 09 Nov. 2014 Location: Silverton, OR Status: Offline Points: 7980 |
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Posted: 12 Nov. 2019 at 11:52pm |
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97 would be stock for a starter that has a pilot bushing in the Bell housing. And 129 for one with an enclosed nose. |
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Chug A Lug
1948 2A Body Customized 1949 3A W/S 1957 CJ5 Frame Modified Late 50's 134L 9.25"clutch T90A D18 (1.25") D44/30 flanged E-Locker D25 5.38 Since 1962 |
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JeepSaffer
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Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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Posted: 14 Nov. 2019 at 7:47am |
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Flywheels and ring gears are standard across all years of CJ-2As, with 97 teeth on the ring gear as Mark said.
Later flywheels can also work (ie they fit the crank flange and fit the bell housing), but ring gears may have to be changed to 97 teeth to work with an original 10 tooth starter. On some flywheels the original tapered dowel pins were changed for special parallel sided bolts, but this is not common. This involved drilling and reaming both the flywheel and the crank, so if your crank or flywheel have had this modification in the past then you will not be able to swap in a different crank or flywheel without making the same modification.
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1948 CJ2A #204853 in South Africa
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athawk11
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Joined: 18 Jan. 2012 Location: Arvada,Colorado Status: Offline Points: 4151 |
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Posted: 14 Nov. 2019 at 1:23pm |
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There is also a 124 tooth flywheel gear used during the early years of 3A production. The flywheels, starters and bell housings are pretty much interchangeable across the L-134 and F-134, but you must have the correct combination of these 3 components.
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1- 1946 CJ2A
2- 1949 CJ3A |
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mbullism
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Posted: 14 Nov. 2019 at 3:05pm |
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...and a lot can happen over 50-75 years 
...or like mine, currently a 2A flywheel with a 129 tooth ring gear to work with a closed nosed starter in an M38 bellhousing
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Those who do not learn from history are doomed to repeat it... Welcome to 1930's Germany
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482aguy
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Joined: 10 Nov. 2019 Location: VT Status: Offline Points: 11 |
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Posted: 15 Nov. 2019 at 4:43pm |
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So if I have an original ten tooth starter, is it safe to say I have a 97 tooth ring gear? I am trying to have a new starter made. Why do they need to know how many teeth the ring gear has? Wouldn’t a ten tooth starter work?
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482aguy
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Posted: 15 Nov. 2019 at 4:44pm |
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Also would any of you be able to tell me what brand my starter is. It sounds like three companies made these starter, all slightly different?
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JeepSaffer
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Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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Posted: 15 Nov. 2019 at 5:16pm |
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A 10 tooth starter SHOULD go with a 97 tooth ring gear. But anything can happen over 70 years. Your choice if you are willing to take that chance.
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1948 CJ2A #204853 in South Africa
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JeepSaffer
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Joined: 26 Sep. 2014 Location: South Africa Status: Offline Points: 1181 |
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Posted: 15 Nov. 2019 at 5:17pm |
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You mean like a lottery, and we get a prize if we guess correctly?
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1948 CJ2A #204853 in South Africa
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Mark W.
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Posted: 15 Nov. 2019 at 6:36pm |
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We would need to see the starter (a PHOTO) and most likely the part number off it. As other have said over the last 70 years even a 1 or 2 owner Willys can have had an amazing amount of changes and work done. Part or all of which will get it farther from its original equipment.
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Chug A Lug
1948 2A Body Customized 1949 3A W/S 1957 CJ5 Frame Modified Late 50's 134L 9.25"clutch T90A D18 (1.25") D44/30 flanged E-Locker D25 5.38 Since 1962 |
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482aguy
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Posted: 15 Nov. 2019 at 6:56pm |
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Thank you. I will take a couple pictures. I guess I should get under there and count those teeth..
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Mike S
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Posted: 17 Nov. 2019 at 6:30pm |
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It should have a metal tag on it.
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'47 CJ2A -- #114542
Warn FF D41 rear Lock-Right locker 11" drum brakes Dual master cylinder T90C Transmission 16 X 6 Jeep truck wheels Cooper STT Pro tires |
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482aguy
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Posted: 24 Nov. 2019 at 12:21am |
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Unfortunately the tag is gone... dang kids!! He “cleaned up the basement and half the starter pieces seem to be missing....
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athawk11 wrote: