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post #1 of 8 Old 09-27-2010, 11:57 AM Thread Starter
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Valve/Cam Cover

Went to do a valve check on the weekend and found that 2 of the three bolts hold the cover for the rear cyl on my 05 wee were striped, or rather the threads in the head for bolt were stripped.

I'm not a fan of oil leaking from the valve cover. Any suggestions on how to fix them? I was thinking re-tapping them or helicoil maybe.
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post #2 of 8 Old 09-27-2010, 12:52 PM
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That's not good, how much room do you have to work there?

Your repair method will depend on the amount of boss left for the threads. Is there enough to drill out for a helicoil? And rather than helicoil, you may consider an insert from Timesert, good stuff.

If there is much left of your threads, you could run the tap down in there one time to get as much thread back as you can, and convert it over to a stud rather than a bolt. If you JB Weld in the stud, it will work for you.

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post #3 of 8 Old 09-27-2010, 01:09 PM
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Timesert has a flange on top. I don't believe this will work with the valve covers. I'd have them helicoiled, or score some journal holders on ebay. (SV ones will also fit.)
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post #4 of 8 Old 09-28-2010, 10:52 AM Thread Starter
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Journal holder might actually be cheaper then coils. I'll have to check flea bay. Thanks for the idea!
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post #5 of 8 Old 09-28-2010, 08:35 PM
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Would cam caps (journal holders? ) from another bike be a good idea?

Cam caps and cylinder heads are line bored as a set, so a set from another engine may not line up exactly right.

I think you'd be far better off to try and salvage the ones you have -- you should be able to install thread inserts if you're EXTREMELY careful with the drilling. I'd have a good shop do it -- this isn't something you want to freehand with a $19.95 Black & Decker...

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post #6 of 8 Old 09-28-2010, 09:17 PM
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Quote:
Originally Posted by bwringer View Post
Would cam caps (journal holders? ) from another bike be a good idea?

Cam caps and cylinder heads are line bored as a set, so a set from another engine may not line up exactly right.
Ehh.. yeah, maybe I just made that part up. I honestly didn't know what they were called.

I am using Cam caps from an SV1000, and they line up just fine. I would think that with current production techniques, this is to be expected, even if they are made as a set with the head. (I was wondering why they have no part number... now i know!)
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post #7 of 8 Old 09-29-2010, 07:50 PM
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Quote:
Originally Posted by uraberg View Post
I am using Cam caps from an SV1000, and they line up just fine. I would think that with current production techniques, this is to be expected, even if they are made as a set with the head. (I was wondering why they have no part number... now i know!)
Good to know. I would also imagine that manufacturing has gotten a lot better since the '80s, but I didn't know if this would be a potential issue. You wouldn't want to try it on a '70s-era GS.

One of those "try it and see" things, I expect. I'd at least want to bolt the cam cap on without a camshaft in the middle and feel to see if there are any edges in there.

I'd also check the clearance with a bit of Plastigage before running the engine.

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post #8 of 8 Old 10-01-2010, 02:37 PM Thread Starter
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I'm going to helicoil it. Just easier I think. I can pull the bit off the bike and put it in my drill press to drill out.

Now I just need some time to actually do this.
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