400/4 spark plug helicoil

[Harold 400/4]

Looking to sort the plug threads on my 400/4. From past posts, helicoils look to be the way to go.
I have read the inserts can come out when you take the plugs out?? Has anyone had any issues with helicoils?
Many thanks
Harold.

[tom400f]

Had one done on my CB175K6 back in the day. It was perfectly fine afterwards - good as new

[Green1]

My Guzzi is full of them not been an issue yet. 

Mick

[hairygit]

A Wurth insert or sometimes called a timesert is better, it's like a metal tube that's threaded inside and out. Offers better heat dissipation as well.

[hairygit]

My Guzzi is full of them not been an issue yet. 

Mick

Till the next time you try and remove a bolt/stud if you re used the shitalian bolts

[Green1]

You just unwind the insert then 

[Greg65]

If it's just the beginning of the thread then you might like to consider a back tap. I recently used one and while the tool is not perfect at £30 it will do, there is an ideal one state side at over £100. I got mine from motorcycleproducts.co.uk.

Greg