bad threads on a engine for 1978 suzuki gs 750?

Question

i have a 1978 suzuki gs 750 and 1 of the threads for the whole that holds the bolt for the header on is screwed up any way to fix the threads on the hole ?

Answer 1

I do not argue with the two previous answers, just tell you of an other and better repair. There is a thread repair kit called "TimeSerts" which hold better than helicoils. Some dealerships and independent repair shops have them. They have a steel insert, threaded inside and out, comes with a drill, tap, and installer. This gives the best fix I have found. The kits are expensive. that is why many shops do not use them , but are certainly worth the extra cost if you do major repair.

Tomcotexas

Answer 2

If badly stripped, you can bore and tap the hole to an SAE (inch) size that's slightly larger and use a non-metric bolt or stud. If not too awful bad, get a piece of narrow guage wire like that found holding ID tags onto something. Bend it back and forth so it looks like a compressed Z, insert it into the full depth of the hole and reinsert the orginal sized stud. How many lengths of wire needed depends upon how much thread you have left inside. Try your hardware store for small copper wire approximately the size of the shank of a straight pin. I had the same problem and the wire trick has worked on my bike for over a year now. On my bike there was too little metal around the hole to use the heli-coil.

Answer 3

Helicoils are fine, BUT, if it's a bolt that is going to be taken in and out all the time, eventually, it'll start to uncoil. If it's a stud going in that will stay in, fine. Otherwise, I'd use a Timesert:

http://www.timesert.com/

This is solid steel that will not uncoil on you. Once in, it's stronger than the original aluminum thread would EVER be.

Answer 4

You need a Helicoil kit.

Answer 5

Welcome to the world of Helicoil. Timecerts aren't something you use on a $400 bike.