stripped exaust bolts

[82gs1100]

i didnt notice untill my head was finished but 3 of the exhaust stud holes are really stripped. Looks like po snaped off old ones redrilled off center and retapped it. leaving ovel holes with still stripped threads. Is there a easy fix for this. i think they need to be filled and drilled and taped, welding mite warp the head that has allready had $1000 work done on it. dont know if there is a epoxy out ther that would work. Am I screwed?

 

[salty_monk]

You should be able to use some kind of helicoil kit. That will work. A lot of people on here seem to prefer a "thread sert" (I think I got that right) as it doesn't come out again.

Do a search, quite a lot of info on this on the forum.

 

[Agemax]

a decent helicoil kit will save you

 

[82gs1100]

even tho tho holes are quit ovuled?

 

[salty_monk]

As long as the helicoil is bigger than the extremes of the oval then you shouldn't have a problem.
The hard part will be drilling them back straight.

Those bolts are not meant to take a lot of torque, I believe the book value is 12lbft so it's not like you are putting a helicoil in something under high tension.

 

[Agemax]

the studs are 8mm threads, so you would probably need a 10mm drill bit to retap and fit the 8mm helicoils. ( i think )

 

[82gs1100]

thanks
made me feel better

 

[Agemax]

thanks
made me feel better

you can buy small kits, comes with the helicoils,correct size drill bit, tap and helicoil insert tool. try ebay or your local hardware store.

actually i think the drill size is 9mm so it depends on how "oval" your holes are, but it should be ok

i know this is UK ebay but this is what you need.........

http://cgi.ebay.co.uk/Helicoil-Thre...UK_Measuring_Tools_Levels&hash=item1c040ee6dc