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Old 10-17-2013, 01:15 PM   #31
veesquared
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Joined: Feb 2004
Location: Center of the Smokies
Oddometer: 125
Valve grinding paste

Quote:
Originally Posted by Hair View Post
In the past I have had problems with the Allen part of the cam bolts rounding off.
So when I remove the bolts I make sure that my Allen tools are high quality with no ware.

But that didn't help me this time.

This is the second time that I have checked the valve clearance on my SE. This time I wanted to record the shim sizes so I could plan ahead for when I might have to change a shim.

I was using a brand new Allen tool. I held the ratchet head in place. But the Allen head stripped out anyway. The bolt didn't move from its factory setting.

So now I have a few months to figure out how to remove the bolt.

It really seems that the 950 cam bolts are unacceptably soft.
When my allens show a little wear i will use air cutoff wheel and remove the worn area.I use an angle air sander and take off any burrs and make sure the end is flat. Try a very small dab of valve grinding paste on the end of the allen. Clean bolt head before re- stalling.
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Old 10-17-2013, 01:22 PM   #32
borborygmus
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had the same problem on the bikes first valve adj.(950 adv) I think Hans at the ktm factory can't hear the little click the torque wrench makes! I won't even tell you what I had to do to remove it!
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Old 10-17-2013, 01:37 PM   #33
BigTony
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Quote:
Originally Posted by veesquared View Post
When my allens show a little wear i will use air cutoff wheel and remove the worn area.I use an angle air sander and take off any burrs and make sure the end is flat. Try a very small dab of valve grinding paste on the end of the allen. Clean bolt head before re- stalling.
Good tip here - I think I my tools may be due for this treatment
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Old 10-17-2013, 05:13 PM   #34
GLRRA47
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One of the bolts holding the cam bridge down on my bike was bent. Obviously a factory defect bolt. Couldn't even fix it with a die. Apparently the person who did the first valve check didn't notice it and messed up more than one threaded hole. A couple helicoils later and a new bolt all is fine. Be sure everything fits together smooth. The bolts should screw-in all the way - pretty much by finger - then use a good torque wrench to snug them up. It's easy, once the bolt starts OK to want to go ahead and seat it- even if it's a little sticky feeling - but don't do it if it doesn't feel right.
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Old 10-17-2013, 06:56 PM   #35
pdxmotorhead
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Just a thought, if there is enough meat around the hole ,, look at threadserts instead of heli colis.. They are installed like a helicoil but designed for aluminum, they use them on the head studs of heavy power VW cases. I found them once through an aircraft supplier. They have a special tap with them and the threads engage DEEP they are Iconal If I recall so really tough but match AL expansion ..

Dave
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Old 10-18-2013, 09:29 AM   #36
Katoom72
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I stripped a bolt aswell and that made me buy new bolts for the front and rear, just to be sure id never run into this.
https://dl.dropboxusercontent.com/u/...320_154706.jpg
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Old 10-18-2013, 09:44 PM   #37
Zuber
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You can grab the head of these bolts with a small needle nose vice grips. Works great.
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Old 10-19-2013, 08:06 PM   #38
Scribe
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Rounded one the last time I checked the valves. I spent a good three days bemoaning my fate and thinking I was going to have to drop the engine to get a shot at the bolt. I finally ended up grinding the damn thing off (put a rag in the engine to catch the shavings, it was not pretty). New bolts every time now.
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Old 10-25-2013, 01:05 PM   #39
Hair OP
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It's been years since I visited this thread. It's been a couple of years since I last owned an LC8. I am thinking of buying another one. It's a little sad to hear that some of you are still having to deal with this issue. On the other hand it's good to hear that it is still a rare occurrence.
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Old 10-25-2013, 02:03 PM   #40
Katoom72
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Enough things you can do to prevent it from happening. People that know the engine expect it and act accordingly to prevent it, LC8 'noobs' get caught by it but it's an easy fix.
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