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Lingle 
Bronze Level
Joined: 30 Sep 2022
Location: Iowa
Points: 23
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 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)
Orange Level Access
Joined: 11 Sep 2009
Location: illinois
Points: 81140
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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..
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Like them all, but love the "B"s.
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captaindana
Orange Level
Joined: 14 Sep 2009
Location: Fort Plain, NY
Points: 2462
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Posted: 23 May 2024 at 6:52pm |
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I always have my old and even new manifolds machined true.
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Blue Skies and Tail Winds
Dana
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Lingle
Bronze Level
Joined: 30 Sep 2022
Location: Iowa
Points: 23
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Posted: 23 May 2024 at 7:06pm |
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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
Orange Level
Joined: 12 Sep 2009
Location: Illinois
Points: 1131
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Posted: 23 May 2024 at 7:35pm |
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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
Orange Level
Joined: 12 Sep 2009
Location: 12194
Points: 2241
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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
Orange Level
Joined: 15 Jun 2012
Location: Rochester Ohio
Points: 2548
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Posted: 24 May 2024 at 10:41am |
I use a large Belt sander on the manifolds to true them up.
Dan
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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
Silver Level
Joined: 17 Sep 2009
Location: TN
Points: 247
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Posted: 24 May 2024 at 11:29am |
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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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