I installed a heli coil in my 1965 corvair and it seems to be stripped out now
can I rethread with a larger coil that is 14mm for the plug or is there a better way to repair this
with out replacing the head?
spark plug heli coil
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Re: spark plug heli coil
What? Reread what you posted. Is that what you meant to say?
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- Posts: 319
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- Location: Eugene, OR
Re: spark plug heli coil
If the hole is not over .660" it can be repaired with an insert called "big sert" made by Timesert. http://www.timesert.com/html/bigsert_sparkplug.html They have inserts available in both steel and aluminum. I have used these with good results. The kit is rather expensive, you might be able to find a machine shop that has one.
HTH
Marty Scarr
HTH
Marty Scarr
Re: spark plug heli coil
I am not sure what you are saying
what I am asking about was answered by martyscarr
what I am asking about was answered by martyscarr
Re: spark plug heli coil
Helicoils are not the best choice for spark plug hole thread repairs as they can come out with the plug.
As Marty said the "Timesert" is the one of the best fixes IF done correctly. If your are in a club someone may already have the kit. Sometimes FLAPS rent out the kits.
Go look at some demo videos on how to install Timeserts
As Marty said the "Timesert" is the one of the best fixes IF done correctly. If your are in a club someone may already have the kit. Sometimes FLAPS rent out the kits.
Go look at some demo videos on how to install Timeserts
Re: spark plug heli coil
I have another head that is on a different engine an will pull it off and check the valves and valve guides
I will probably clean it up and use it I think the guy that had that car had just overhauled it and drove it 800 miles and fried the number 5 piston
so the head should be like new. at least none of the plug holes are stripped out.
I will probably clean it up and use it I think the guy that had that car had just overhauled it and drove it 800 miles and fried the number 5 piston
so the head should be like new. at least none of the plug holes are stripped out.