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Sumith
Need Advice on Head
#1
No life (a.k.a. DattoMaster)
Joined:
2008/11/26 10:52
From Sri Lanka
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Hi Guys

I have problematic Spark Plug thread ,which the spark plug doesn't fit properly tight enough on my second piston head, What do you advice ?
Can i make oversize spark plug on all cylinders ?
or is it good to fill the problematic spark hole and cut it's thread back to the normal specification ?

thanks
regards
sumith

Posted on: 2012/11/21 4:13
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ddgonzal
Re: Need Advice on Head
#2
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2001/5/3 7:04
From 48 North
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If a spark plug thread is stripped, we use Heli-coil. Basically new thread is cut with an oversize tap, then the heli-coil insert screwed in, then the spark plug will screw in. Do not overtighten.

Only the damaged thread needs repair. There is no need for the other cylinders to match.

I have not heard of oversize spark plugs.

Posted on: 2012/11/21 6:12
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Sumith
Re: Need Advice on Head
#3
No life (a.k.a. DattoMaster)
Joined:
2008/11/26 10:52
From Sri Lanka
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Posts: 1232
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Hi DD

thanks, something new to me helicoil but got an idea
i will talk to the engineering worker

thanks
regards
sumith

Posted on: 2012/11/21 6:34
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