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 Post subject: Bushing question
PostPosted: Tue May 12, 2020 11:56 am 
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TBI Slant 6

Joined: Sat Oct 12, 2019 11:42 pm
Posts: 156
Car Model: 1962 Dodge Dart
Hi all,

I have an engine that was originally coupled to an automatic transmission and I am swapping the auto trans for a 4 speed manual. Because of this the crank hole in the engine was not finished machined for the bronze support bushing. After taking my measurements I am planning on having the OD of my bushing turned down 0.004 so that the OD of the bushing is only 0.002 larger than the ID of the crank hole. I then plan to tap the bushing into the crank hole with a soft rubber hammer.

Does that sound about right?

Paul


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 Post subject: Re: Bushing question
PostPosted: Tue May 12, 2020 12:22 pm 
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Supercharged
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Joined: Thu Jan 27, 2005 8:32 pm
Posts: 7834
Location: Portland-ish
Car Model: Fiat 500e
.002" is too much of an interference fit. Try for .0005" A rubber hammer is not enough to drive in the bushing. Or get the roller bearing that fits in the torque converter recess.

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Joshua


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 Post subject: Re: Bushing question
PostPosted: Tue May 12, 2020 8:16 pm 
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TBI Slant 6

Joined: Sat Oct 12, 2019 11:42 pm
Posts: 156
Car Model: 1962 Dodge Dart
Ok, I will try that. Another guy recommeneed a timkin/national FC69907 bearing, but the one I found is over 3 inches across which wouldn't work. I have no idea how I would go about sourcing a roller bearing with the correct OD and ID for a hole that was never completely finished in the first place.

Finally, in not a hammer, how do you get that in there?

Paul


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 Post subject: Re: Bushing question
PostPosted: Tue May 12, 2020 10:02 pm 
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Supercharged
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Joined: Thu Jan 27, 2005 8:32 pm
Posts: 7834
Location: Portland-ish
Car Model: Fiat 500e
FC69907 fits in the large hole in the back of the crank, not the small hole. It's a finished hole and I don't know where you got those dimensions. https://www.rockauto.com/en/moreinfo.ph ... 68&jsn=451

A rubber hammer won't drive in the bushing, but a steel one will. You can also press in the bushing if you have a bearing puller. YouTube can help.

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Joshua


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 Post subject: Re: Bushing question
PostPosted: Wed May 13, 2020 6:04 am 
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Supercharged
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Joined: Wed Oct 12, 2005 9:00 pm
Posts: 2798
Location: kankakee IL
Car Model: 80 volare, 78 fury 2 dr, 85 D150
Ive had bushings turned down to fit in an unfinished pilot bushing hole before, and I've used the Dakota pilot bearing that fits in the torque converter register. now a days Id just do the Dakota bearing. much easier.


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 Post subject: Re: Bushing question
PostPosted: Wed May 13, 2020 8:25 am 
Offline
TBI Slant 6

Joined: Sat Oct 12, 2019 11:42 pm
Posts: 156
Car Model: 1962 Dodge Dart
Hi Joshie,

I got those measurements from the bearing on Amazon. I have since found the correct one on Summit. Would it hurt to install the bushing and the bearing? Seem's like a overbuild, but I like that.

Volaredon,

My cursory search for the Dakota bearing seems to show that it is the same thing that Joshie spoke about. Thank you for your suggestion.

Sincerely,

Paul Barrow


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 Post subject: Re: Bushing question
PostPosted: Wed May 13, 2020 12:45 pm 
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Supercharged
User avatar

Joined: Thu Jan 27, 2005 8:32 pm
Posts: 7834
Location: Portland-ish
Car Model: Fiat 500e
I would install the roller bearing at leave it at that. The bearing rides on different spot on the input shaft that should not have any wear.

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Joshua


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