Anti seize and aluminum heads?

[woodsnake]

I was just thinking about when I read in my Trick Flow aluminum head installation instructions, how they said NO ANTI SEIZE on any of the bolts that went into the aluminum.

Any explanation for why not? I thought that was what anti seize was for?

 

[midlife]

Fluids, oils, and anti-sieze affects the torque values necessary to apply the required clamping force. The manufacturer typically states to torque dry or wet with the torque values.

 

[MotoArts]

That's about all I could think of, too.

But the head bolts don't thread into the aluminum, just pass through.

Hmmmm.

I still would antisieze any fasteners regarding the accessories, rocker studs, manifolds, etc. Best to stud them, IMO... and I still would antisieze the studs.

 

[mdan575]

Are you using Head Bolts or Studs? Studs are on the short list for parts I need to get to put my motor together. But ya they are right. Anti-Seize on the threads will alter torque values. Same reason ARP has a specific lube for torquing the fasteners they make.

 

[woodsnake]

I used studs with the 351. I was thinking that there are other products that do the same thing, I know there is a copper based anti seize that is popular as well. I hadn't considered the torque value....It just seemed odd to me. I used anti seize on all my header bolts and spark plugs anyway! I have no intention of pulling the threads out, when I have to change the plugs!