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Old 07-30-2020, 08:32 AM   #1
Richard Lorenz
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Default Manifold Gland Rings

These are the rings that go between the block and the manifolds. What experience or recommendations do you have?
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Old 07-30-2020, 09:04 AM   #2
Conaway2
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Default Re: Manifold Gland Rings

I use them to help with alignment of the manifold to the block. If you cannot make them line up, its usually a sign of a warped manifold.
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Old 07-30-2020, 09:06 AM   #3
Will N
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Default Re: Manifold Gland Rings

Over time, the rear of the exhaust manifold tends to droop downward due to the weight of the muffler pulling down on it while the manifold is near red-hot. The holes in the manifold and the exhaust ports in the block get out of alignment, and you can't use the gland rings any longer. It seems to work ok with just the gasket if you have the manifolds faces trued up with a mill.
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Old 07-30-2020, 09:58 AM   #4
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Default Re: Manifold Gland Rings

If you're going to put them in, check the width of the rings and the depth of the openings, to be sure that when they're in the gasket will be compressed to make a good seal.
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Old 07-30-2020, 12:25 PM   #5
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Default Re: Manifold Gland Rings

They sometimes migrate to your muffler resulting in a new rattle.
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Old 07-30-2020, 12:42 PM   #6
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Default Re: Manifold Gland Rings

Quote:
Originally Posted by katy View Post
If you're going to put them in, check the width of the rings and the depth of the openings, to be sure that when they're in the gasket will be compressed to make a good seal.
X2 If they fit they are worth using.
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Old 07-30-2020, 12:56 PM   #7
Brentwood Bob
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Default Re: Manifold Gland Rings

Watch this.https://m.youtube.com/watch?v=ylGWKvNvbmU
Should cover most of your concerns.
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Old 07-30-2020, 01:52 PM   #8
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Question Re: Manifold Gland Rings

Last muffle change on my roadster. I found "7" gland rings rattling around
in the old muffler! The gland rings that the parts houses sell and I use. Are not the proper dimensions and are more of a generic better than nothing replacement. I believe the Judging Standards give what the proper size and make up of the original rings are. Is anybody making correct gland rings?


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Old 07-30-2020, 05:28 PM   #9
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Default Re: Manifold Gland Rings

I have found that the "nothing" option works really well. After buying the rings I got fed up with trying to make them fit and decided not to use them. No problems so far.
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Old 07-30-2020, 05:52 PM   #10
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Default Re: Manifold Gland Rings

Forget the repro gland rings and get copper manifold gaskets from Bert's. Part A-9448-D Made in USA!
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Old 07-30-2020, 07:56 PM   #11
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Default Re: Manifold Gland Rings

I have used these copper gaskets with the glands built in from MAC's. Part #: 28-24825-1
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Old 07-30-2020, 09:16 PM   #12
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Default Re: Manifold Gland Rings

Except for a short time in I think 1930 (and then on only a few engines) all Model A engines used them. If Ford did not think they were important he would not have used them. all the engines we do get them if they are ported for them.
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Old 07-30-2020, 10:51 PM   #13
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Default Re: Manifold Gland Rings

Ford only used them in 1928. They are worthless in my opinion. Been fixing and driving Model A’s my whole life and never used them or needed them
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Old 07-30-2020, 11:03 PM   #14
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Default Re: Manifold Gland Rings

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Originally Posted by SteveB31 View Post
Ford only used them in 1928. They are worthless in my opinion. Been fixing and driving Model As my whole life and never used them or needed them
I agree -found they made the job harder. Decent copper crush gaskets and clean milled faces and the jobs done
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Old 07-31-2020, 09:43 AM   #15
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Default Re: Manifold Gland Rings

If Ford only used then in 1928 then why are all the blocks and exhaust manifolds machined for them?
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Old 07-31-2020, 09:52 AM   #16
Ruth
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Default Re: Manifold Gland Rings

Quote:
Originally Posted by redmodelt View Post
Except for a short time in I think 1930 (and then on only a few engines) all Model A engines used them. If Ford did not think they were important he would not have used them. all the engines we do get them if they are ported for them.
Quote:
Originally Posted by SteveB31 View Post
Ford only used them in 1928. They are worthless in my opinion. Been fixing and driving Model A’s my whole life and never used them or needed them
Quote:
Originally Posted by redmodelt View Post
If Ford only used then in 1928 then why are all the blocks and exhaust manifolds machined for them?
I have heard the same as redmodelt. And redmodelt makes a valid point. Why did they continue to machine the blocks and manifolds if only used in 1928?
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Old 07-31-2020, 09:56 AM   #17
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Default Re: Manifold Gland Rings

I love reading all the comments from the experts and how one tells you to use them and someone tells you they are not needed! ❤️ it!
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Old 07-31-2020, 10:03 AM   #18
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Default Re: Manifold Gland Rings

The original purpose of the gland rings, that are used only in the exhaust ports, is to prevent burnout of the manifold gaskets. The rings expand, so they need to have 1/16th gap when installed. If no gap, the rings will buckle and windup in the ports.
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Old 07-31-2020, 10:08 AM   #19
Purdy Swoft
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Default Re: Manifold Gland Rings

I have had some gland rings to end up in the muffler , that's why I quit using them .
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Old 07-31-2020, 11:05 AM   #20
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Default Re: Manifold Gland Rings

We could possibly distinguish here between "are gland rings needed" and "are gland rings helpful." My understanding is that they're helpful in preventing manifold drop and damage to the gasket from high-temp gases. However, if it is difficult or impractical to procure gland rings that are the correct size, or if the manifold has previously been resurfaced, such that there is no longer sufficient depth to permit the rings to be installed correctly, the benefit provided by the rings may not be enough to justify the cost of modifying the manifold/block or hunting for rings that are the correct size.
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