Motorcycle Repair

The Photo Album is a place for "Shop Shots" as well as pictures and descriptions of projects that we are working on. Show off your Shops, Machines, and your Projects!

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Greg B
Posts: 68
Joined: Mon Mar 10, 2003 7:57 pm
Location: Irvine, CA

Motorcycle Repair

Post by Greg B »

Have you ever bought a bike, and once you had to open it up you found things that made you say "Aw CRAP!"?
These are the cam cap journals from my GS1150. The short towers are for holding the valve cover in place.
Here's what I went through. Kind of a PIA but hey, whadda ya want.
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You can see the small crack. While not bad, doesn't give one the warm fuzzies. So, I made a fixture to mount in the lathe and get the hole running true.
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Machining the register. Just wanted a true diameter. Size wasn't important.
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Once that was done I turned a collar that was about a .001" slip fit on the register I had just machined.
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Collar installed with some Loctite RC680. That ought to keep it in place.
Greg B
Posts: 68
Joined: Mon Mar 10, 2003 7:57 pm
Location: Irvine, CA

Post by Greg B »

Oh, it gets worse. On to the second tower.
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This one won't be so easy.
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Using the same fixture, I bored and threaded what was left of the original hole. Being careful not to machine any deeper than the depth of original hole. Breaking into the cam journal is BAD.
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Next, a threaded insert to screw in place. I also threaded the "tower" portion, because I intend to (in belt and suspenders fashion) slather JB Weld over it to (hopefully) make the repair as strong as possible.
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Insert Loctited into place. Will finish it up tomorrow, after everything cures.
Greg B
Posts: 68
Joined: Mon Mar 10, 2003 7:57 pm
Location: Irvine, CA

Post by Greg B »

Finishing everything up.
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Cam cap back in the lathe, faced to length, drilled and tapped. You can see how I coated the part with JB.
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Ta Da.
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I needed to machine clearance for the cap bolt since the epoxy had oozed.
Greg B
Posts: 68
Joined: Mon Mar 10, 2003 7:57 pm
Location: Irvine, CA

Post by Greg B »

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And there you have it. Two repaired towers. I hope some folks enjoyed this.
Greg B.
hitandmissman
Posts: 41
Joined: Sun Jan 07, 2007 10:11 pm
Location: Avella, Pa

motorcycle repair

Post by hitandmissman »

Great save of a couple parts. Thanks for posting it.
hitandmissman
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Flybynight
Posts: 704
Joined: Sun Apr 03, 2005 10:27 pm
Location: Beaver Dam,AZ

Post by Flybynight »

Thats what is nice about having your own equipment. You can repair items that you possibly can not even buy. And if you pay to get it fixed it isn't worth it.
Looks like a great fix.
Jim
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