07 Dyna Crank question
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Joined: Apr 2007
Posts: 64
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From: ohio
07 Dyna Crank question
I bought this bike a couple of months ago. It seems to run ok. No noises just an oil leak at primary. Well,I opened up the primary and found a mess. Starter ring gear missing a tooth and this black stuff. Well,after fixing the ring gear.decided to upgrade to the Screaming Eagle compensator,figuring this is what caused to starter issue.
When I removed the stator,I found the black stuff was the stator magnets. The piece from the starter ring gear was inside the stator. It also damaged the rotor,eventhough it still charged. I bought a used rotor and installed. Figured I had it licked.
I decided before I installed the primary cover I would turn it over to make sure all was ok. Noticed the bolt in compensator had some runout.
I placed a dial indicator on the crank end of compensator. I get around .025" I know this exceeds the limit. If I have this much runout on this side,what are the odds that this is the same on the cam side? Had thought that possibly the rotor damage might have caused the crank runout issue only on the compensator side.
If the crank is twisted it would be the same on the other side also? Appreciate an expert opinion.
I'm to the point now,since it still has oil pressure,that I will put it up for sale and cut my losses now. Tom
When I removed the stator,I found the black stuff was the stator magnets. The piece from the starter ring gear was inside the stator. It also damaged the rotor,eventhough it still charged. I bought a used rotor and installed. Figured I had it licked.
I decided before I installed the primary cover I would turn it over to make sure all was ok. Noticed the bolt in compensator had some runout.
I placed a dial indicator on the crank end of compensator. I get around .025" I know this exceeds the limit. If I have this much runout on this side,what are the odds that this is the same on the cam side? Had thought that possibly the rotor damage might have caused the crank runout issue only on the compensator side.
If the crank is twisted it would be the same on the other side also? Appreciate an expert opinion.
I'm to the point now,since it still has oil pressure,that I will put it up for sale and cut my losses now. Tom
Big Kahuna HDF Member
Joined: Feb 2006
Posts: 23,881
Likes: 34
From: USA
If you are going to sell it then what do you need an opinion for? Then again if it were me I would pull the crank and have it repaired/replaced with a balanced/welded one and re-cam the engine and do a big bore kit. But if you have .025 on one side I really doubt the other side is true. Sounds like somebody rode that bike pretty hard.
Road Warrior
Joined: May 2010
Posts: 1,382
Likes: 4
From: Kennewick, WA
Just fix it. I could never sell a bike, with a known problem, to a bro without first telling them the truth. Maybe I'd trade it in, but I'd never sell it outright.
I've been through similar situations and just ate it at my expense.
I've been through similar situations and just ate it at my expense.
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