Incorrect carburetor inlet fittings

a place to discuss anything of interest to owners of M151 jeeps

Moderators: rickf, raymond, Mr. Recovery

Post Reply
User avatar
rickf
General
General
Posts: 19741
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Incorrect carburetor inlet fittings

Unread post by rickf » January 22nd, 2020, 6:14 pm

I am sure most of you have heard me harp on not screwing the filter directly into the carb and also not to use the wrong fitting since they are all pipe thread and can split the carb. Well, I have one here to show exactly what can happen. See the pics below. You will not that the threads are also stripped out when it started leaking so they kept tightening it thinking it was loose. This was a brand new carb, never used. I am going to try to TIG weld the fitting and then drill and tap it. I may just end up building up the area around the hole so the boss is heavier and tap it for pipe thread since the hole is already hogged out.

Image

Image

Image

Image
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Mark
Brigadier General
Brigadier General
Posts: 2085
Joined: September 19th, 2009, 11:33 pm
Location: South Dakota

Re: Incorrect carburetor inlet fittings

Unread post by Mark » January 22nd, 2020, 7:23 pm

I see that you got one of a lineman's wrenches lying there, sometimes used as a hammer, pry bar, tied to a peeline to throw over existing lines,a multi-use tool, and yes, even to tighten nuts/bolts LOL!!
This is a very good post to us wanna be mutt mechanics!
Thanks for posting it.Looks like it is on your office desk?
mark


1968 m274A5
1960 m151
1981 m151A2
1964 m416
1971 m416

User avatar
rickf
General
General
Posts: 19741
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Incorrect carburetor inlet fittings

Unread post by rickf » January 22nd, 2020, 7:51 pm

I was actually using that wrench on a decapping tool from Lee at their direction to tighten the crap out of it to try to get it to work. It didn't, I wanted to deprime a whole bunch of brass this past weekend and now I have to wait for them to send me parts. I doubt it is going to fix the problem but they offered so hey. I almost NEVER use an adjustable wrench unless it is a left handed one for left handed threads since I have very few left handed wrenches.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Hambone
Brigadier General
Brigadier General
Posts: 2495
Joined: October 1st, 2010, 12:19 am
Location: El Dorado, Arkansas

Re: Incorrect carburetor inlet fittings

Unread post by Hambone » January 22nd, 2020, 8:02 pm

My wife has banned mechanic work in the house, grease on the stove is fine but grease in the kitchen sink got me in trouble. :roll:

User avatar
m3a1
Lt. General
Lt. General
Posts: 4029
Joined: August 7th, 2014, 6:36 pm

Re: Incorrect carburetor inlet fittings

Unread post by m3a1 » January 22nd, 2020, 8:26 pm

Those wrenches aren't much good for peeling oranges, either... :(

User avatar
rickf
General
General
Posts: 19741
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Incorrect carburetor inlet fittings

Unread post by rickf » January 22nd, 2020, 10:07 pm

m3a1 wrote:
January 22nd, 2020, 8:26 pm
Those wrenches aren't much good for peeling oranges, either... :(
They are if you hit it hard enough. :twisted:
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

User avatar
rickf
General
General
Posts: 19741
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Incorrect carburetor inlet fittings

Unread post by rickf » January 22nd, 2020, 10:09 pm

And the actual carburetor work is done in the garage but it is 14 degrees out there so picture taking can be done on my desk! Especially with a new, clean carb.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Mark
Brigadier General
Brigadier General
Posts: 2085
Joined: September 19th, 2009, 11:33 pm
Location: South Dakota

Re: Incorrect carburetor inlet fittings

Unread post by Mark » January 22nd, 2020, 11:43 pm

I might add with the crescent wrench it is easy to round off the bolt head corners as there is slop in the jaws sometimes, (well it depends on the bolt, quality of wrench, I am rambling on too much.
mark


1968 m274A5
1960 m151
1981 m151A2
1964 m416
1971 m416

User avatar
raymond
Major General
Major General
Posts: 3425
Joined: November 26th, 2007, 8:29 pm
Location: God's country, Clarksville Mo.

Re: Incorrect carburetor inlet fittings

Unread post by raymond » January 24th, 2020, 11:27 am

I see that pill bottle in your picture :!:

Good to see you haven't "gone off your meds" :idea: :P
Raymond


"On the day when crime puts on the apparel of innocence, through a curious reversal peculiar to our age, it is innocence that is called on to justify itself." Albert Camus

User avatar
rickf
General
General
Posts: 19741
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Incorrect carburetor inlet fittings

Unread post by rickf » January 24th, 2020, 9:01 pm

That is actually just "Beano" so I don't blow up like a balloon every time I eat beans. Another thing I inherited from my mom, along with the migraine headaches! I don't show the GOOD stuff!
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

bazookajoe
Sergeant First Class
Sergeant First Class
Posts: 267
Joined: January 8th, 2011, 9:03 pm

Re: Incorrect carburetor inlet fittings

Unread post by bazookajoe » January 26th, 2020, 9:46 pm

I know the inlet thread to the carb is a straight runnng thread and most fittings are NPT or tapered pipe thread..."pipe fitter for 45 years", sooooo where do you obtain the correct fitting with a straight thread and the locknut on it. I also noticed the locknut has a sealing element to it. I have installed a filter into the straight thread, FINGER TIGHT ONLY with success but i guess most people put a wrench on it...big no no.

User avatar
rickf
General
General
Posts: 19741
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Incorrect carburetor inlet fittings

Unread post by rickf » January 27th, 2020, 10:56 am

Army Jeep Parts has a fitting that can be used for the A1, it is 90 degree and comes with a nut and an o-ring for the seal. the only issue I have with that is the nut should be relieved so the o-ring has a place to sit in and not be smashed. I have used the straight thread and o-ring trick many times when making drain plugs for transmission pans.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

User avatar
Mr. Recovery
Brigadier General
Brigadier General
Posts: 2892
Joined: December 5th, 2007, 9:03 pm
Location: New Port Richey, Fl.
Contact:

Re: Incorrect carburetor inlet fittings

Unread post by Mr. Recovery » January 27th, 2020, 12:04 pm

TNJ Murry has a 30 degree elbow but not sure the threads are right??

https://tnjmurray.com/11641104elbow-pipe-30-degree.html

They also have the proper nut and seal.

https://tnjmurray.com/8764823locknut-pi ... a1-a2.html

Dan.
1960 M151 Run 1
1963 M151 Willys DoD 10-63 in Baltimore
1989 Alley Cat. "work in Progress"
NRA Life Member
American Legion Post 275 Fl
US Army 6 years 2nd Armored Cavalry Bindlach Germany
Colorado Army Nat. Guard 5 years
Md Air Guard 15 years active duty on C-130's

User avatar
rickf
General
General
Posts: 19741
Joined: November 26th, 2007, 1:28 pm
Location: Pemberton, NJ.

Re: Incorrect carburetor inlet fittings

Unread post by rickf » January 27th, 2020, 1:54 pm

That appears to be a standard pipe fitting. Not the correct one. The correct one has a much longer threaded end that fits in the carb with the sealing nut.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

Post Reply