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Manifold Nuts

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John Cotner View Drop Down
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    Posted: 17 Jan. 2021 at 11:21am
I'm replacing the manifold on my '46 CJ2a as well as replacing some of the missing studs.  The original nuts seem to be brass, and I can't find similar replacements.  Is there any reason regular nuts can't be used here with suitable torque and a dab of anti-seize compound?
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John Cotner
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Post Options Post Options   Thanks (0) Thanks(0)   Quote russnj Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 12:59pm

43 MB, 48 CJ2A, 50 CJ3A, 55 M38A1, 56 CJ5, 79 M151A2, M100 ,65 M416
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rus Curtis Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 3:16pm
I purchased mine at my local parts store.  Just ask for them.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote ggordon49 Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 3:28pm
I could only find these at my local parts store 


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Post Options Post Options   Thanks (0) Thanks(0)   Quote JohnB Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 4:09pm
Napa has the brass manifold nuts.
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John Cotner View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote John Cotner Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 4:39pm
Thanks for the info.  I didn't think of NAPA for nuts, but I'll stop by.
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John Cotner
New Ulm, Minnesota
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cal.bar Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 5:25pm
Don't forget the hardware store!  I LOVE shopping for "car parts" at the hardware store. lol
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 64CJ5 Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 7:47pm
What is the reason for using brass nuts? 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bruce W Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 8:01pm
  They don’t rust and stick to the stud, Tom. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 64CJ5 Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 8:42pm
Thanks Bruce. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Oldpappy Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan. 2021 at 9:47pm
I like to use brass nuts on the exhaust pipe flange for the same reason, they don't rust and stick as bad.

I have used steel nuts on the manifold studs with anti seize compound but only when I didn't have brass. I prefer using brass with anti seize.

If a brass nut does seize on a steel stud the brass nut will usually still come off without enough force to break a stud.  

 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ron D Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan. 2021 at 2:30am
I found it hard to find those brass self-locking nuts at my local hardware stores. I believe the size is 3/8-24. Not cheap, but discovered that BMJP and MWM stock them. If it helps, here's a photo of some:


Good luck!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ron D Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan. 2021 at 3:03am
And if you don't look close at these being cad-plated steel (using a little anti-seize), they're pretty good substitutes at a much better price.


I use the brass nuts on the manifold studs, and steel on the rest of the exhaust system.

Good luck!

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1951 M100
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John Cotner View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote John Cotner Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan. 2021 at 11:13am
Brass seems to be the way to go.  Dropped into NAPA yesterday and they got some for me.  Farm store only had 3/8"-16.
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John Cotner
New Ulm, Minnesota
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hamhog Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan. 2021 at 4:25pm
If you live in a communist state, and you're still locked down, boltdepot.com has them for a decent price (plus shipping).
Dave
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ron D Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan. 2021 at 7:12pm
Can you give the boltdepot part number?

I searched their site up and down for 3/8-24 brass self-locking nuts with no joy.

They seem to have plenty of regular brass nuts.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bill2A Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan. 2021 at 8:47pm
If you can't find self locking, regular brass nuts can still work with split lock washers.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Oldpappy Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan. 2021 at 10:52pm
Communist state? Not yet.
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