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Bronze clutch bushing on D15
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modirt View Drop Down
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Joined: 18 Jul 2018
Location: Missouri
Points: 8828 		Post Options Post Options   Thanks (0) Thanks(0)   Quote modirt Quote  Post ReplyReply Direct Link To This Post Topic: Bronze clutch bushing on D15
    Posted: 11 Apr 2023 at 9:30am
D15 is in shop sitting next to a CA. Bronze clutch bushing being put into both.

CA has a wick type contraption in crankshaft to lube it's bushing.

Does D15 bushing have something similar or does it run dry?
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Alberta Phil View Drop Down
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Joined: 13 Sep 2009
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Points: 3930 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Alberta Phil Quote  Post ReplyReply Direct Link To This Post Posted: 11 Apr 2023 at 2:01pm
If you mean the pilot bushing in the flywheel, those are usually oilite bushings. They are made out of a bronze material that is soaked with oil and will last a long time.
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modirt View Drop Down
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Joined: 18 Jul 2018
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Points: 8828 		Post Options Post Options   Thanks (0) Thanks(0)   Quote modirt Quote  Post ReplyReply Direct Link To This Post Posted: 11 Apr 2023 at 2:54pm
Thats the one. The oiite part makes more sense than it being on there dry.

Was thrown off by the CA having a provision to oil it. Just wanted to check to see if D15 needed the same. If not, then no worries.


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DrAllis View Drop Down
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Points: 22049 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 11 Apr 2023 at 10:05pm
I usually pack a little grease in the pocket to help work into the bushing over time.
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
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Points: 8651 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 11 Apr 2023 at 10:29pm
Same as GM used for ever?...probably changed lately. I know at least the 40's to the 80's
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modirt View Drop Down
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Points: 8828 		Post Options Post Options   Thanks (0) Thanks(0)   Quote modirt Quote  Post ReplyReply Direct Link To This Post Posted: 13 Apr 2023 at 8:43am
Short update:

When tested nekked, bushing slipped right on the shaft. But when installed in flywheel, ID is reduced enough it will not slip on. Shop manual addresses this and says ID may have to be honed slightly to 0.879".......or a couple thousands over the OD of the shaft. I'm told it needs to be a close fit, but also must spin free when you step on the clutch.

Same happened with both CA and D15. Just wanted to mention it for future reference for others to be aware of.
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