808DA6 Posted December 2, 2009 Report Share Posted December 2, 2009 I have a friend that just found out that his new-to-him truck has had helicoils installed into the spark plug holes in this truck. Are these things one time use only? Once you loosen or remove the spark plug, do you need to put in a fresh helicoil? Thanks guys, Brian Quote Link to comment
moparvwfreak Posted December 3, 2009 Report Share Posted December 3, 2009 they should be a permanent thing. no need to replace em unless they come out on ya. Quote Link to comment
Z-train Posted December 3, 2009 Report Share Posted December 3, 2009 ANTI-SEIZE....use it. Quote Link to comment
datsunaholic Posted December 3, 2009 Report Share Posted December 3, 2009 Me personally I'd NEVER use a heli-coil on a spark plug hole, I'd be too worried it wouldn't seal or would spin down and fall into the cylinder after repeated use. Bore out and sleeve with a plug adapter. Quote Link to comment
Skib Posted December 3, 2009 Report Share Posted December 3, 2009 helicoils in the spark plug holes = facepalm Quote Link to comment
DRIVEN Posted December 3, 2009 Report Share Posted December 3, 2009 Machine shops use them all the time. They are considered a repair and can be used over and over. As stated earlier, don't forget the anti-seize! Quote Link to comment
banzai510(hainz) Posted December 3, 2009 Report Share Posted December 3, 2009 use helicoils righ before you sell it!!!!!!!!! make sure to use NGK plugs. Autolite have a slightly different pitch and are hard to get out. if using helicoil make sure no to overtighten Quote Link to comment
zed Posted December 5, 2009 Report Share Posted December 5, 2009 I'm working on an aluminium Mazda F8 head right now - just about all the studs are helicoiled in it, and some are pulling out - not nice to work with. But I guess with the older motors you've got to expect wear and tear. Quote Link to comment
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