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| Bushing question https://slantsix.org/forum/viewtopic.php?t=64877 |
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| Author: | Pgbarrow [ Tue May 12, 2020 11:56 am ] |
| Post subject: | Bushing question |
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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| Author: | Joshie225 [ Tue May 12, 2020 12:22 pm ] |
| Post subject: | Re: Bushing question |
.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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| Author: | Pgbarrow [ Tue May 12, 2020 8:16 pm ] |
| Post subject: | Re: Bushing question |
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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| Author: | Joshie225 [ Tue May 12, 2020 10:02 pm ] |
| Post subject: | Re: Bushing question |
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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| Author: | volaredon [ Wed May 13, 2020 6:04 am ] |
| Post subject: | Re: Bushing question |
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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| Author: | Pgbarrow [ Wed May 13, 2020 8:25 am ] |
| Post subject: | Re: Bushing question |
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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| Author: | Joshie225 [ Wed May 13, 2020 12:45 pm ] |
| Post subject: | Re: Bushing question |
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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