Thread: When to use locklite and antisieze?

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Hey guys i know this question might sound dumb, but i'm just curious on when to use locklite and when to use antisieze?

The short answer is, use locktite on something that you feel needs to be secured from loosening, and use anti-seize on somthing that you feel you may have a hard time removing later, such as sparkplugs, especially in aluminum heads.

I usually like to use locktite on things that rotate, like bolts on a flywheel, etc.

I'm sure some of the expert engine builders on here will have other uses and opinions, but I think this is a general rule of thumb.

The most used locktite is the "blue", although there are stronger versions like "stud and bearing mount" that are very difficult to get loose, and are used on things you don't want to ever come loose. Blue is removable when used.

Hope this helps a little.

Don

Hey Don just wanted to say thanks for the tips. If anybody else has any more suggestions please be free to tell, and thanks guys.

yeah locktite works great on fly wheel bolts. two of mine popped off and where banging aroung ion the pan, went to orchard supply, bought a little longer bolts, used locktie, never happenend again, good stuff.

in my auto shop class, we use antiseize on all wheel studs, they stay torqued and they don't seize on like they can, loc tite on anything that dosn't come loose very often, maby VC bolts, maby it's somthing as simple as a dizzy cap hold down screw ( some fords use them, rather than clips, 2.9 Ranger motor comes to mind for 1 )

here are some things i use locktite on red. engines cam bolts fly bolts oil pump body bolts oil pump studs windage trays stud and screws oil pump filter adapter bellhousing bolts brake hard ware mounting brackets. any where heavy vibration may make a lock washer fail .they crack . ring gears on rear ends and some guys use it on main studs were they go in the block. but there is two things to think about. if you use it on ring gears and main studs. on main stud they need to be torque up so the lockltite is not on the front part of the threads. so the stud will hold and not ride on the locktite . on ring rears torque all them up with no locktite and take one out at a time and retorque this way it will not dry and give you a false read. i like to use 620 locktite high temp retaining compound for block sleeves and block soft plugs and cam plugs

in my auto shop class, we use antiseize on all wheel studs

There are different schools of thought here. Some wheel manufactureres say never to use anti-seize on lug nuts. Centerline is one of them.

There is some engineering behind this. Moly greeze (never seize) tends to be thick but still viscous. After torqued over time it is possible for it to migrate effectively relaxing stud preload. Without preload and the friction so low from the moly you could lose your nuts (a bad thing in any context). I do not use it on wheel lug nuts personally. But I stop short of saying it is wrong. If I did use it on wheel studs I would check the nut torque more than once after application.

But I would forget and I know my wheels would fall off

Regards, Kitz

whats with all you chevy guys having flywheel bolts coming undone?! i've never had one come out on my fords..... but anyways... antisieze works great also on exhaust bolts, as long as they're torqued right they wont rattle loose, but they can get very stuck after a long time of operation, all the expansion from the heat and any carbon buildup from the exhaust.... and you can often break the bolts off or even break your manifold....

"whats with all you chevy guys having flywheel bolts coming undone?! i've never had one come out on my fords"

Well, that's understandable. Chevies twist tighter and make more power than those "middle of the road" Ford motors.

Originally posted by thesals
whats with all you chevy guys having flywheel bolts coming undone?! i've never had one come out on my fords......

guess thats cause most fords don't make that much bolt loosening torque.

Originally posted by viking
guess thats cause most fords don't make that much bolt loosening torque.

why take chance with some thing falling off and hitting a ford in back of you

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