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UB Exhaust Manifold Replacement

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MnBoy
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PostPosted: Thu Apr 18, 2019 7:00 pm    Post subject: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

My '53 UB has huge cracks in the exhaust manifold. Didn't help when I created huge backfires when I went to new Pertronix, dist. cap, wires, plugs, then reconnecting the wires incorrectly. Didn't realize that the rotor moves counter-clockwise. Anyway, I have ordered a replacement exhaust manifold and want to know if anyone has done this and if they can offer any advice. Thanks.
 
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Scout2008
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PostPosted: Fri Apr 19, 2019 5:46 am    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

I put a new one on my 53 UB a couple years ago. I put an electronic ignition in it, and the new manifold when I restored it. Everything works great.
Biggest issue if getting a good paint on the manifold to fight rust.
 
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MnBoy
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PostPosted: Fri Apr 19, 2019 7:42 am    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

CVPost-Scout2008 wrote:
(quoted from post at 06:46:35 04/19/19) I put a new one on my 53 UB a couple years ago. I put an electronic ignition in it, and the new manifold when I restored it. Everything works great.
Biggest issue if getting a good paint on the manifold to fight rust.


Thank you for the reply. What kind of paint did you use? Also, did you have any issues removing the [rusted] nuts? Looks like they are originals. Here are some photos.







 
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Scout2008
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PostPosted: Fri Apr 19, 2019 10:00 am    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

No, the nuts came off pretty easily. I usually replace them, and the studs if they are worn. That thing is really cracked! I used high temp primer and
paint and it didn?t work well. I have been having the ones I have done lately cerekoted.
 
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MnBoy
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PostPosted: Fri Apr 19, 2019 10:29 am    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

Scout, thanks for the input. Yes, that manifold is "toast." I did look into the cerekote process, a ceramic-type coating. Not cheap, but likely the right system for superior results. I am guessing you do a fair amount of work on Vintage Tractors. My UB is just a workhorse, used to move stuff around with a front loader.
 
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Scout2008
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PostPosted: Fri Apr 19, 2019 3:13 pm    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

My UB, was my Grandpas and he bought it in 54.


 
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Bob M
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PostPosted: Fri Apr 19, 2019 3:18 pm    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

Replaced a cracked manifold on my '47 UTU (same engine as your UB).

Had no issues whatsoever changing it out. The clamp nuts (brass) came off easily, and the new manifold fit up perfectly.

I didn't bother painting the new manifold. It came painted, and the original manifold lasted 60+ years with the OEM paint - that's good enough for me.
 
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mmfan55
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PostPosted: Fri Apr 19, 2019 4:56 pm    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

Usually if nuts don't want to turn:
the stud will screw out. Yours don't
look too bad. Should be an easy swap
 
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george md
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PostPosted: Fri Apr 19, 2019 7:29 pm    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote


I have repaired MM manifolds that were worse than that. Don't do it

much anymore ,health is catching up with me.

I'll put a link to a Mm I did a number of years ago. Tour the whole

site.

george
MM manifold

 
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george md
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PostPosted: Fri Apr 19, 2019 7:35 pm    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote


If you want black on the hot parts , get a can of JD muffler painy.

You won't like the price , but it will last better than anything

else. I hate buying JD stuff ,but it works.

george
 
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MnBoy
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PostPosted: Fri Apr 19, 2019 9:32 pm    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

Good point about the original paint!
 
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MnBoy
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PostPosted: Fri Apr 19, 2019 9:34 pm    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

George, the job you did on the "cracked beyond recognition" manifold is amazing! Like a piece of art when you finished with it.
 
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MnBoy
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PostPosted: Fri Apr 19, 2019 9:37 pm    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

Scout, yes I did see your post earlier. What a masterful job you did on that UB!
 
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Scout2008
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PostPosted: Sat Apr 20, 2019 2:41 am    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

My UB, was my Grandpas and he bought it in 54.


 
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MnBoy
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PostPosted: Sat Apr 20, 2019 6:59 am    Post subject: Re: UB Exhaust Manifold Replacement Reply to specific post Reply with quote

My grandpa and dad both worked at the MM Plant in Minneapolis on Lake Street. I have a picture of grandpa [top row, second from left] at the Lake Street Plant. I grew up in Minneapolis not far from this Plant.

 
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