"meirman" wrote in message
...

Follow-up on the engine with bad spark-plug threads that you were good
enough to advice me on a couple months ago .

The hole was definitely too small for the bigger sparkplugs, so I
decided to go with the helicoil.

If the threads are damaged, helicoil it. Don't rely on just some of the
threads. I'd have paid the shop - seems like a fair price for one plug.

N