all joking aside, I know people who have helicoiled heads. Treat it with respect and chemicals.
need help replacing spark plugs (1 Viewer)
- Thread starter gatorfj80
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
I had to do it on a Ford 4.6 that kept blowing a plug out and destroying the coil pack each time.
Should have gotten the helicoil the first time.
Ended up costing me over a grand in parts (I kept buying plugs and coil packs) when it could have costed about $200 had I done the smart thing.
Oh, to be young and carefree again...
Yeah it was a joke (the engine design).
Last edited:
I have seen anti-seize cause spark plugs to get stuck in the head. The liquid lubricants in the compound dry out and you are left with a semi metallic hard paste in the threads. This was the cause of almost completely destroying the threads in the head of my Discovery. I know Bosch and NGK plug threads are coated at the factory and should be installed into dry clean threads in the head. This is also stated in the factory BMW repair guides. I know these aren't BMW's but its still an almn head vehicle. If you are working with an iron head I would use a little copper based anti-seize but not the low temp silver stuff. Other than the 406 small block I built when I was 18 I've been installing my plugs dry for the last 15 years with no issues and I take my plugs out a couple times a year to check them, plus all the plug replacements I did when I was a BMW tech.
Information from Denso and NGK web sites:
http://www.globaldenso.com/en/products/aftermarket/plug/basic_knowledge/installation/index.html
http://www.ngksparkplugs.com/pdf/TB-0630111antisieze.pdf
http://www.globaldenso.com/en/products/aftermarket/plug/basic_knowledge/installation/index.html
http://www.ngksparkplugs.com/pdf/TB-0630111antisieze.pdf
Good links.
Contrary to popular belief, anti seize is not the holy grail of tune-ups.
Haven't used it in years.
