So I was sizing up my crankshaft and noticed that the hole which the locator pin is inserted got gouged a little bit after my bike fall a while back. I have the locator pin but I don't think it will stay in place unless I use JB weld or something, which might not work either because the pin spins on the shaft and the weld might not be strong enough. To get a better idea of what I'm talking about:



If it doesn't work I'll need a new camshaft, which requires taking apart the engine. I think I'll probably get a new bike in that case. Thoughts?

Thanks!

JB weld, hell no. Proper weld and grinding and shaping yes. You are best off with someone who can tig it on, then you go in there with a hand file, dont try to hurry it and use a power tool. Use magnets on the back side of the file so you collect the filings on the file and not on the crank/bearings/oil.
Cool.
Buddha.

Quote from: The Buddha on February 28, 2012, 11:07:09 AM
JB weld, hell no. Proper weld and grinding and shaping yes. You are best off with someone who can tig it on, then you go in there with a hand file, dont try to hurry it and use a power tool. Use magnets on the back side of the file so you collect the filings on the file and not on the crank/bearings/oil.
Cool.
Buddha.

Sounds like more work than I'd like to put in. I just have an aluminum bonding compound. No welder and probably won't be buying one just for that purpose. The pin won't stay in it's hole anymore, because the hole has widened.

I read something in an old thread on this forum and found out that the pin doesn't have to be tight, and if I put the ignition rotor in the correct way, then the pin should stay in place. Is this correct?

The ignition rotor should keep the pin in the hole. Only concern I would have is that the slop would permit the ignition to fall out of spec. But, if it's a very small amount of slop, it's probably not going to be an issue.

Would loosely install the rotor, and see if it's possible to rotate it more than a degree or two independent of the crank.

there's a hole next to the pin hole that's about the same size. So if I insert the pin as it is it will move around a bit. I'm not sure what to do, but I want it to be painless.

Bump. Do I need a new crankshaft?

Can I just drill a new hole, put some loctite in there and cut off the drill bit? Running out of options.

bump

Here is a thought, I'm no expert on ignition timing by far, but I'm thinking:
Drill a hole in the opposite side of the crankshaft (180* from the other one) and then switch the pickups around too. The signal should be generated at the proper time to fire the plugs, because the pickups would correspond to the new pin location? You'd need to remember this when you set TDC for timing work, because it won't be in the normal location anymore.

Thoughts anyone?