06 cbr 600rr Clutch bolts stripped... - 600RR.net
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post #1 of 10 (permalink) Old 03-11-2016, 06:52 PM Thread Starter
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06 cbr 600rr Clutch bolts stripped...

Hey everyone, bought my first 06 cbr 600rr with 8k miles on it. I picked it up from the shop where the owner had the work done, i noticed new sealant around the clutch cover and they stated they "replaced the clutch because it was free spinning". So i took the bike for a ride and it rode good, all gears were smooth, no idling problems or acceleration problems. So i bought the bike, put about 80 miles on it and noticed a small oil leak coming from the clutch housing.So i get a wrench and make sure all of the bolts are tight. All of them were tight accept one where the oil seemed to be leaking out of..It was free spinning.Uh...oh..So I bring it in to Motoworld, our big bike shop here in San diego to have them reseal the clutch and possibly heli coil the free spinning bolt. They take off the cover to notice that the previous job that was done stripped out an additional 2 bolts making a total of 3 stripped clutch cover bolts. They said that 2 of the 3 had already been heli coiled before and can't be re Helicoiled. The third bolt they said can't be heli coiled due to its position. So now my 1 week old motorcycle that i bought has a clutch cover they said can't be tightened...and therefore the bike is not rideable. Any body know how to remedy the situation or is swapping out all the internals to a new engine housing my only option or buy a used engine? I messaged the previous owner who claims he had no idea about the clutch and he messaged the bike shop and they said "it wasn't leaking when it left here" So I'm left up creek without a paddle. any help or recommendations would be great. Super bummed.
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post #2 of 10 (permalink) Old 03-11-2016, 08:16 PM
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Oh wow that blows man. I was so paranoid not to over tighten those bolts too. You cant try to thread a bigger bolt in there??

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post #3 of 10 (permalink) Old 03-11-2016, 08:34 PM Thread Starter
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Hey bud, i haven't tried that yet...not sure if a bigger bolt will crack the engine housing or not..I read that trying teflon tape might be worth a try..but not sure if that will hold because of the pressure behind the bolt...
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post #4 of 10 (permalink) Old 03-11-2016, 09:42 PM
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Find a good MIG/TIG welding shop....or a good machine shop.

They may be able to deposit material in stripped holes, and then rethread to OE size bolts.

Maybe.....?

Check Marine repair places also.....
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post #5 of 10 (permalink) Old 03-11-2016, 10:47 PM Thread Starter
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Thanks tary i will look into it :) Ill keep you posted on progress!!
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post #6 of 10 (permalink) Old 03-12-2016, 07:21 AM
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Lots more options than simply heli coils, if that's all the shop you took it to can come up with find a new shop.

Timesert (?) I think is one that hold better, actually. As mentioned, welding is another option and probably the best or also as mentioned CAREFULLY drilling, tapping and installing the next size up bolt can be done too.

Find a local race shop and call them; racers are masters at issues like this.

EDIT: Yup, timesert it is: http://www.timesert.com

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post #7 of 10 (permalink) Old 03-12-2016, 04:32 PM
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Edit....


Id take the helicoil out, take the bike to a welding shop and fillup that hole/s (weld-patch it basically) and tap it.

Bring the bolt to pepboys and find out the right size of the bolt and buy right size for the tap and drill combo for. Buy 2 of those (at least) cuz the thread on the tap might go dull half way the process (this is when it becomes harder to hand twist).

Last edited by venomenon83; 03-12-2016 at 04:40 PM.
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post #8 of 10 (permalink) Old 03-13-2016, 08:08 PM Thread Starter
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Thanks venom and weber ill be sure to look into those options this week! i sent an email out to a couple shops and hopefully can have it looked out this week!! thanks! safe ridings :)
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post #9 of 10 (permalink) Old 03-13-2016, 08:37 PM
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I'm assuming these shops don't want to do it because they don't want to be liable. But those bolts should honestly only really be taking around 7 ft/lbs of torque. Should be fine pulling out the old helicoil and putting a new one in, we do it on C-130s. Honestly id just reinstall the bolts after filling the holes with sealant to help hold it, with a good clean surface and seal those bolts shouldn't be the reason its leaking at all. I mean we use a sealant called B 1/2, and on the B-1 we have air diverters/vortex generators literally just B 1/2 onto the jet, no rivets or fasteners through them, and we're talking about a Jet that goes well over 1500mph and they're a bitch to remove during isochronoical inspections.

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post #10 of 10 (permalink) Old 03-13-2016, 10:23 PM
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Maybe you could epoxy a few small studs in the casing and use nuts? That's an option if no one wants to weld the holes and re-tap. If 7 ft-lbs is the torque spec, like posted above, then almost anything you do could get that tight. Just my .02. Good luck!

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