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Allis WD Manifold and Gas Cap

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Lingle View Drop Down
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Joined: 30 Sep 2022
Location: Iowa
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lingle Quote  Post ReplyReply Direct Link To This Post Topic: Allis WD Manifold and Gas Cap
    Posted: 23 May 2024 at 6:20pm
good day everyone!  I am working on my wife's families 1949 WD and the fuel cap seal looks to need replacingso I bought a cork one from DJ's and its way too big and the NBR one dimensions are way too small.  looks like I need a 2 3/16" OD with a1 3/8" ID gasket, anyone have a lead on those?

Also, I took the manifold off to fix a leaking gasket only to find that the inner 2 most exhaust ports are ~1/8" to slightly more outboard than the intake ports.  They have some heavy pitting and I speculate with the leak they are missing material.  Has anyone machined the surfaces back flat or is it best to find a replacement manifold?  the photos look like they are not planar but I laid the straight edge against the intake port as to me that is more critical to seal.  could the manifold gaskets take up that much gap?  doesnt seem correct



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steve(ill) View Drop Down
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Joined: 11 Sep 2009
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2024 at 6:37pm
If the manifold is in good condition and not rotted thin ....... then YES, i would machine if flat.. Hard for a gasket to takeup that much difference.

try to make your photos approx 800 x 600 pixels..


Like them all, but love the "B"s.
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captaindana View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote captaindana Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2024 at 6:52pm
I always have my old and even new manifolds machined true.
Blue Skies and Tail Winds
                          Dana
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Lingle View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lingle Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2024 at 7:06pm
Thanks Steve, first time posting pictures here so didnt know the size, it came in as 1080x1080 but in the future I will do that.  I plan to post about the seat here shortly as ive never seen a seat like what it has on it.
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EPALLIS View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote EPALLIS Quote  Post ReplyReply Direct Link To This Post Posted: 23 May 2024 at 7:35pm
I'm confident if you contact DJ's they will make it right with you on the gasket.  I've always had good luck with them.  Oh, and thanks for saving another WD.  It is appreciated!
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Brian G. NY View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian G.  NY Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2024 at 10:18am
I don't have a machine shop but I have "trued" them up using a big ol' flat b-stard file.
Takes some patience and some "elbow grease".
And, for good measure, I have also leveled up the surface on manifolds by applying good quality furnace cement when installing.
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Acdiesel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Acdiesel Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2024 at 10:41am
I use a large Belt sander on the manifolds to true them up.

Dan 
D19 diesel,D17 diesel SER.3 D14 NF,D14 WF, D15 SER.II wf
D15 SER.2 DIESEL,D15 ser.II nf
D12 SER.I, D10 Ser.II
2-720'S

Gmc,caterpillar
I'm a pharmacist (farm assist) with a PHD (post hole digger)
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GeneD14 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GeneD14 Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2024 at 11:29am
Like Dan, I normally use a large stationary belt sander. I then help the manifold seal against the head with some Permatex Exhaust and Muffler sealer.
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