Anti- sieze on NGK TR55 plugs

[KRatcliff]

Originally Posted by Jeff Stout

You saying taper seat plugs on aluminum head? Didn't think that was possible.

Taper seat plugs are what we use on our LT1 and LS1 aluminum heads.

[Jeff Stout]

Originally Posted by KRatcliff

Taper seat plugs are what we use on our LT1 and LS1 aluminum heads.

Thank you. Learned something new

[Dissident]

Biggest problem with anti-seize is that folks tend to slop it on instead of using small amounts per the mfg's instructions.
Regards,
HB2
Dissident

[SSDiv6]

I use anti-seize, however, not all anti-seize products are the same. I recommend either a Copper or Nickle based high temperature antiseize. The Champion brand that Curtis Reed showed in the earlier post is a very great product used in aviation.

Based on recommendations from a friend that managed a NASCAR engine shop for many years, I use Copaslip high temp anti-sieze on the spark plug threads. Copaslip makes two products, Copaslip and Molyslip; the one to use is Copaslip without moly. Moly, when exposed to high temperatures may induce corrosion.

Another great product is Jet-Lube NIKAL anti-seize, which is nickel based and the Ford XL-2 High Temperature Nickel Anti-Seize.

Not only I recommend these products for spark plugs, but also with O2 sensors.

Also, proper torque is critical, for the right thread engagement I suggest using the manufacturer specification. I have seen to many plugs that appear to have been installed with a breaker bar. It is also recommended that when you have a sealing washer, torque, loosen and re-torque to compress the washer, making sure you get the proper thread engagement and heat transfer.

[Dave Noll]

With dissimilar metals (steel spark plug, aluminium head) there's an electrolysis that occurs. That is what welds the plugs into the heads like in Jims example. Electricians use it for the same reason. The same electrolysis that occurs in the cooling system and can be measured with a volt meter because its acting like a battery. And where an anode saves other things in the cooling system from erosion.

[Ed Wright]

I also use it on intake & header bolts. Anything that screws into aluminum.