Spark plug blew out 1964 9.5 hp

[kenpa]

was testing a 1964 9.5 and was running fine until the buttom plug blew out. The plug had been badly cross threaded and the head threads are shot. Short of replacing the head(a possibility) is there a fix

 

[jwbmarine]

"u can get a heli-coil kit,..i

"u can get a heli-coil kit,..i'm not a fan of those tho,..there r also thread inserts,i do like those,and a machine shop can repair"

 

[optsyeagle]

"I don't know if the deale

"I don't know if the dealers have them for your motor, but I put a new cylinder head on my 1975 9.9Hp for $110.00. Like jwbmarine, I got tired of the heli-coil that was in it when I acquired it, unwinding back out and eventually unsealing the plug. Motor really complains, when that happens.

Heli-coils and inserts are probably a little cheaper, however."

 

[jack_sprat]

"You could try this thread rep

"You could try this thread repair system looks a little better than a heli-coil.

TIMESERT ® PROFESSIONAL SPARK PLUG THREAD REPAIR KITS

http://www.timesert.com/html/sparkplug.html"

 

[maxie]

I have a 200 hp evinrude. The

I have a 200 hp evinrude. The threads are stripped in the aluminumm that holds the two stainless steel bolts (screws) that hold the trailering arm support bracket.Any suggestions?

 

[jwbmarine]

"machine shop for sure...dont

"machine shop for sure...dont even think,..about anything else...how did that happen...oh,.u r better off,starting a new discussion,at top."

 

[dazk14]

Re: Spark plug blew out

The repair kits work well. The key is using loctite red to permanently set the insert.

 

[choppertown]

Re: Spark plug blew out

heli coil it. just make sure to do a good job of it and it will be fine.

 

[majkmann]

Re: Spark plug blew out

I have a head for a 64 9.5 with good spark plug threads. Dirt cheap (U pay postage).