Your saying the bolt is stripped...I'm guessing the threads in the case are what you mean? The cost effective way would be to drop in the helicoil like you mentioned. I'm not sure if thats a blind hole or not. Watch out for the mess going into the motor.



Myself, I wold helicoil all of them so the torque values would all be equal as they change a little when your fastening to steel vs. aluminum. Unfortunately the best way would be to split the cases so you can be sure no grit ends up in the motor.



I'm not perfectly clear, but I think one of the stud holes acts as an oil drain or something to that effect...



Good luck.

 

Your saying the bolt is stripped...I'm guessing the threads in the case are what you mean? The cost effective way would be to drop in the helicoil like you mentioned. I'm not sure if thats a blind hole or not. Watch out for the mess going into the motor.



Myself, I wold helicoil all of them so the torque values would all be equal as they change a little when your fastening to steel vs. aluminum. Unfortunately the best way would be to split the cases so you can be sure no grit ends up in the motor.



I'm not perfectly clear, but I think one of the stud holes acts as an oil drain or something to that effect...



Good luck.

heli coil use them on my big bikes all the time

 

Heli coil is the best idea

 

but modifab has a very good point. the upper head stud on the clutch side acts as a oil passage so just make sure you dont interfear with that. the best fix would be to buy a new case. you can probally find one for $25-100. let me check i might have one.

 

The oil passage feed to the head is the lower right stud (as you sit on the bike), or the one without a nut or washer on it, in the picture.

Personally, I prefer using the regular hex nuts as opposed to the acorn nuts, for that reason.

A heli-coil should work out just fine. Measure the depth of the hole before drilling, and tape off the drill bit accordingly, so you don't drill through.

 

The threads in the case are the ones stripped. Sounds like heli-coil will be the best bet. Whoever said they might have a case, send me a pm, I might be interested.



M.

 

Helicoils suck ass! Go to a shop and tell them you want a time sert installed.

http://www.timesert.com/

 

Are you 100% sure its stripped in the cases? I did that once and though i stripped the threads in the cases but turned out it just stripped the stud and the nut was turning on the stud.

 

I did the same thing as 3rdgearpinned. I just ended up getting a new stud, and cleaning up where the stud screws into the case.

 

I am so confused. What exactly is the problem, you can't get the studs out of the cases? Or you can't get the nuts off the top to get the head off? What exactly is happening?

 

if you tore out a stud get ahold of dratv and get the cases that are bored for a 54mm sleeve. it will be easier to upgrade your engine later on. might as well do it now while its broke

 

I have not torn the engine down to find out exactly if the case or the stud is the problem. I think the case is stripped where the stud attaches. I will pull it apart this weekend to be sure.



M.

 

i got a brandnew stud, you want it ? pm me, the exact thing happend to me and it was just the stud

 

Well is what i would do is get a new stud (nomatter your going to need a new stud anyway) and see if you can thread it into the cases. If it threads in there then theres no reason to pull the motor apart. The threads might be a little messed up so you might need to lock two nuts together to get the studs to start. I wouldnt be suprised at all if you could get the new stud in there without a problem.

 

I have had this happen too. It was a stripped STUD, not the cases.

 

I am hoping it is a stripped stud. Thanks for the info; I will update this weekend.



M.

 

how in the world is the threads getting messed up in steel before it does in aluminum? (stud instead of cases)but its cool that it works out that way.