In this video, I show you in how to fix a loose exhaust pack nut that continually likes to work itself loose! I'll show you once and for all how to stop that pesky nut from backing out and altering your exhaust note to sound like a WWII airplane!!
Enjoy the video
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Best idea I've seen anywhere for ages!.......
Invest in a pack nut wrench, and you won't have to go to such extremes! I've been driving T's for over 55 years, and haven't had one come loose yet!
If you've got good sharp threads on the manifold and nut, a pack nut wrench will work, but I've seen too many manifolds where if you tried to tighten with a wrench, you would strip the threads that are marginal at best. If you don't have a better manifold, or don't want to pop for a repo, sometimes, you just have to make do.
Yup, Terry and if you don't strip them when you are tightening they might come loose later when your bouncing around driving.
Here's another suggestion for those that may have bad threads on the manifold:
I used a new nut and cut thru one side of the threads. Next I formed a Quality S/S hose clamp around the outside of the nut. I tightened the clamp slightly and carefully started and tightened the nut to the manifold careful not to strip it and last I tightened the hose clamp which clamped the nut very tightly around the manifold threads. The nut clamped tightly has never come loose since.
I have a new nut on mine and have run it some but not driven it yet. I thought about putting an exhaust pipe clamp right against the nut to keep it from "backing off".
I just use one of these on my '24. Never had a problem with the nut coming off. Anyone else use one?
Yes, good part.
You're right on Larry. I have a crescent wrench that fits the exhaust nut very nicely and is a bit longer than the standard wrench. They don't back off if tightened enough.
Yes, Cameron.... same idea ... commercial version. I have one, and works well.
Interesting- the pipe nuts on both of my Ts have never come lose and neither of them use the clamp.
Like Larry, I have driven many thousands of miles in my T's and have never had a pack nut loosen up. I use a Ford wrench for that purpose, and it does the job without needing any other attachments.
The reason parts are made, like what is pictured above, is because the person who made the part doesn't understand how to tighten a pack nut, and the person that buys one knows even less!
I can confirm it works.
After the nut went loose three times in 30 miles I learned the fix from this forum two years ago.
Simple and clever is always the best
Joerg, with respect, I notice in your picture that the pipe does not meet the manifold squarely. This causes the nut to have only partial contact with the flare.
The secret to getting a good fit on the pipe to the manifold is to wiggle the pipe as you are tightening the nut. You will feel the pipe seat against the manifold as you tighten. You can't just tighten the nut and expect it to seat against the manifold without doing anything else! It also helps to remove the hot air pipe while doing this.
Back in the day, owner's could have fixes too for loose nut, or poor flange on the exhaust pipe
The fit of the pipe to the manifold is dependent on the straightness of the frame. Many frames sag at the point where the crankcase ears are attached. Ideally, the frame should be straightened. If not straightened, the pipe must be bent to fit.