1969 Charger 440 RB Exhaust Manifold Studs and Nuts: Do I need to use Lock Washers?

robl72 · Aug 31, 2021

Should I be using lock washers to attach my exhaust manifold to the studs?

The previous build used them but I noticed when I bought a new exhaust manifold stud/nut kit that it did not include lock washers.

Also should I be using Anti-seize or some other product on the studs?

Thanks for any help!

s/w theo · Aug 31, 2021

Never saw lock washers on any exhaust manifolds, or headers for that matter. I do like to use anti-seize a lot on stuff. I don't think it could hurt.

PRND21 · Aug 31, 2021

10-4 on the never seize, on any exhaust or aluminum. You’ll thank yourself if you ever have to take it apart.

Red63440 · Aug 31, 2021

Anti-seiz yes, lock washers no.

robl72 · Aug 31, 2021

Thanks guys! I am going to settle anti seize yes and lock washers no....

69b3rt · Aug 31, 2021

The exhaust studs that go into the head need sealant on the threads so coolant doesn't weep past and leak.

robl72 · Aug 31, 2021

69b3rt said:
The exhaust studs that go into the head need sealant on the threads so coolant doesn't weep past and leak.

I finally got lucky on something.... The studs that go into the heads stayed in when I removed the nuts, so I am good!.

s/w theo · Sep 1, 2021

I've also learned that anti-seize must be used on two stainless steel fasteners (nut & bolt) when used together.

1969 Charger 440 RB Exhaust Manifold Studs and Nuts: Do I need to use Lock Washers?

robl72

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s/w theo

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PRND21

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Red63440

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robl72

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69b3rt

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robl72

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s/w theo

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