Help I Stripped the spark plug hole!

[Allthumbs]

Need some help please!

I was working on my old Olympque Skidoo the other day.

Tryed to change the plugs they were very tight nearly siezed!

Got one plug out easy but the other not so easy

Noticed one plugs threads in the cylinder head is pretty nearly done

So how can i fix this?

[olyman]

If the threads are shot you can either install a heli coil to replace the threads, or just put another head on the engine from another sled (by far the easiest). Either option requires you to take the head off the engine.

What is year is the sled? Sounds to me like its either a 399, 340 or a 440 twin. Heads for these are a plenty - I have lots of 399 & 440 heads kicking around. Take some pictures

[allthumbs]

ok right on thanks for your help
im will try the hella-coil thing you mentioned..

i dont have camera no more the dog chewed it..


But if i cant get it that way i will let you know about a new head...