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Old 04-06-2014, 05:33 PM   #1
KGBz OP
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Pissed F800GS Broken Skid Plate Stud

Hey guys. I over torqued a skid plate bolt and the stud broke off. Can a machine shop do the repair without dismantling the engine? 2014 F800GS Adeventure.
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Old 04-06-2014, 05:50 PM   #2
Capt CF
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Originally Posted by KGBz View Post
Hey guys. I over torqued a skid plate bolt and the stud broke off. Can a machine shop do the repair without dismantling the engine? 2014 F800GS Adeventure.
What about an easy out or left hand drill bit?
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Old 04-06-2014, 07:06 PM   #3
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What about an easy out or left hand drill bit?
Problem is, the broken stud is in the Crank case. I might be able to use a cammed socket type remover for it. Just wondering if anyone else has any experience with this.
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Old 04-06-2014, 07:36 PM   #4
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Originally Posted by KGBz View Post
Problem is, the broken stud is in the Crank case. I might be able to use a cammed socket type remover for it. Just wondering if anyone else has any experience with this.
I'd prob try an easy out or left hand drill bit and if that didn't work drill it out and tap it. If you try the easy out be careful. I have broken those off before and once you get a hardened bit broken off in there it becomes exponentially harder to deal with. Some folks won't touch them and go straight to the drill and tap.

If you don't want to hassle with it, yes, this is an easy job for a good machine shop.
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Old 04-06-2014, 09:41 PM   #5
lookaught
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If theres enough stud sticking out (probably only need 1/2") the camming stud tools work really, really well. I've taken out many 8mm broken exhaust manifold studs on cars with that tool and some heat. I imagine for a skid plate you used loctite, so put a propane torch on it for 45 seconds and then it should come out like butter.

You can also use two nuts if there's enough threads and you don't have/want to buy the tool.

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Old 04-07-2014, 04:10 AM   #6
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Originally Posted by KGBz View Post
Hey guys. I over torqued a skid plate bolt and the stud broke off. Can a machine shop do the repair without dismantling the engine? 2014 F800GS Adeventure.
Does the plate not mount on rubber dampers?? What bolt did you break? GH
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Old 04-07-2014, 07:37 AM   #7
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Does the plate not mount on rubber dampers?? What bolt did you break? GH
I broke the stud that sticks out from the engine. I have the socket type bite bits that chomp onto the outside of the broken stud. I might try some heat and these socket-biters, but I will not try to drill out a stud on a crankcase. Too little experience doing this on a high price item.

I will post a picture for you guys when I get home tonight and asses the situation some more. I broke it on Saturday and was so pissed, I figured i would wait a day and come back to it lest I F it up even more in anger.
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Old 04-07-2014, 07:55 AM   #8
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The skid plate mounts to the sump, not the engine block itself. The sump is easily removed if needed for easier access and removal of the stud. With the skid plate off, the sump can be removed in just a few minutes, there are 14 bolts securing it is all. Re-installation is simple as well, the gasket should be fine to reuse, you just need to follow the tightening sequence and correct torque specs.
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Old 04-07-2014, 09:46 AM   #9
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The skid plate mounts to the sump, not the engine block itself. The sump is easily removed if needed for easier access and removal of the stud. With the skid plate off, the sump can be removed in just a few minutes, there are 14 bolts securing it is all. Re-installation is simple as well, the gasket should be fine to reuse, you just need to follow the tightening sequence and correct torque specs.
That's good news!
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Old 04-07-2014, 06:14 PM   #10
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That's good news!
Yeah, and even in the worst case ... by BMW standards a new one doesn't even cost much...
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Old 04-07-2014, 07:22 PM   #11
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Yeah, and even in the worst case ... by BMW standards a new one doesn't even cost much...
Because Rotax sells them cheaper?

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Old 04-07-2014, 08:49 PM   #12
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A new sump is over $300. I know because I cracked mine and had to replace it. Not sure if that is cheap even by BMW standards.

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Old 04-07-2014, 09:41 PM   #13
KGBz OP
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i removed the skid plate tonight to get a better look at the stud.



turns out its a double sided rubber isolator! I just unscrewed it and will replace the broken one! much easier.

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Old 04-08-2014, 01:03 AM   #14
GPHusky250
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"That was easy"

If you mount up a Black Dog Skid plate, you don't even have to replace a rubber isolator.
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Old 04-08-2014, 01:42 AM   #15
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drill and tap

Centre punch where it has broken off then drill and tap. Screw in a stud with 601 Loctite. Did this when one broke on mine ( the dealer is over 2 hours away )
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