Helicoil size

[rudycard72]

I finally traced my outboard problems to a stripped spark plug receptical , I plan on installing a helicoil to fix the problem but I'm not sure what size I need. The motor is a 1970 johnson 20hp seahorse model # 20R70E. Any help is appreciated.

 

[lckstckn2smknbrls]

Sorry I don't have an answer for you but someone has reinvented the helicoil. I don't remember the name but if you do some searching online you should find it. It's a big improvement over the old style.