Rusted engine case bushings

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12/10/2017 7:40 AM

Working on restoring an older Honda. Managed to get the swingarm pivot bolt out after a few hours of soaking in wd. The pivot bolt is pretty rusted so I ordered a new one of those but does anyone do anything with the rusted bushings in the engine cases?

The bike overall is clean but obviously corrosion is the reason the pivot bolt gets stuck. After doing some research it looks like these aren’t bushings I can buy and replace. I always grease the bolt every time it goes back in my other bikes and at least yearly anyway. But this bike is almost 30 years old and I’m not the first owner. Maybe just clean them up good and just use anti seize and grease, or maybe some sort of paint or coating?


12/10/2017 1:09 PM

if you're that worried about it, clean the ID up with some green scotchbrite or extra fine steel wool, and grease well before assembly. Pull it apart at least once a season and regrease (obviously do it more often if you ride in muddy or sandy conditions regularly)


Many thanks to everyone helping me out this GNCC season: SRT Offroad, Acerbis, FCR Suspension, O'Neal Racing, Evans Waterless Coolants, Rekluse, Twin Air, Braking Brakes, Carbsport

Profile image credit Ken Hill Photography

12/10/2017 2:04 PM

Yea that’s what I figured. Just from experience,once corrosion is present, even if my swingarm bolt is new the bushings will attemp to weld themselves to it again. Didn’t know if there was a paint or coating besides grease to help stop the corrosion without increasing the I.d. Too much


12/10/2017 5:03 PM

You can get them black oxide coated. Will prevent rust without changing the dimensions like paint would. Getting them out of the cases is where you will struggle.


2009 Kawasaki KX450F
2009 Kawasaki KX250F
2002 Suzuki GSXR 600

12/10/2017 5:05 PM

Yea I just went out and cleaned them up with some scotchbrite and out better light on them. They actually aren’t too bad I think it was a mixture of wd and rust from the pivot bolt that made it look worse than it is