Thread: Head Bolts Won't Shift

Originally Posted by bblaze

Some, no rephrase that, all the worst heads I have ever removed have had studs as a retaining system. If they have been there a long time (like you desribed) they are nearly impossible to remove because they grow into the head, exspecially with different metals ie cast blocks, steel threads and alloy heads. I would retain the bolts.
cheers
blaze

that is why you coat them with Loctite Nickel Anti-seize before installing them.

Originally Posted by Brian Hjelm

that is why you coat them with Loctite Nickel Anti-seize before installing them.

But as a mechanic (past life) you would hope you never had to pull the same head twice, so not many mechanics coate with an anti seize. I used too but it was the engines that were years old and never had a head removed that were the worse. Air cooled like deuzt often worse because of the higher operating temps.
cheers
blaze

Originally Posted by bblaze

But as a mechanic (past life) you would hope you never had to pull the same head twice, so not many mechanics coate with an anti seize. I used too but it was the engines that were years old and never had a head removed that were the worse. Air cooled like deuzt often worse because of the higher operating temps.
cheers
blaze

I served my apprenticeship as a fitter in a transport business in Western Qld. We always assumed that whatever we fixed would have to be fixed again ( and again, and again) due to the effects of heat, dust, western "roads", poor oils and basic filtration if any, and high mileage. Before anti-seize we used grease. Apprentices would have been chastised if they were noticed not to have used grease or anti-seize on wheel studs in particular.