Stripped Exhaust Stud Help

[TBR125]

My exhaust stud pulled out from the head on my agility under spec torque.

Any cheap repair options? I know my head is cheap but would prefer not to change that.

[Stig / Major Tom]

Same thing happened to a LIKE200i owner in Austria - "torque wrench"
He has a thread here, somewhere, think he had to finally send it to a shop for drilling and coil if memory serves.

You're an experienced scooter wrencher - I'm surprised you used a torque wrench on such a small fitting?
Torque wrenches are so very rarely recalibrated for accuracy - critical on small ones.
Stig

[TBR125]

I invested in a 1/4 inch precision spring dial wrench. I have found proper torque and a locking mechanism to be a crucial part of maintenance after a variator nut flew the coop.

I drilled and tapped the head for a larger bolt then used a die to re-cut the protruding bolt to M8-1.25. Time consuming but free.

[CROSSBOLT]

All primed to brag an Helicoil wannabee thread insert but you already nailed it!

[TBR125]

I drilled and tapped the center of a bolt to thread the stud into. The first one was drilled off-center because i'm using a cordless drill with an inaccurate chuck. The second one should be good when I finish it.

[TBR125]

I need a vise.

[TBR125]

Picture.

[Iahawk]

that is some damn impressive, precision drilling!

[TBR125]

Thanks, I'm to thrifty to buy a Helicoil. Besides, a Grade 8 insert precision cut from billet steel must be superior:)

[Tromper]

Nicely done.
I've seen worse done with a press.

[TBR125]

Thanks Tromper, I need a press.