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Old 08-12-2018, 07:00 PM   #1
Ruth
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Default Exhaust manifold Gland Rings.

I had to buy a new exhaust manifold due to sagging and #4 not sealing.
After bolting the intake and exhaust manifolds together. I had the surface machined flat.
As I was fitting the manifolds to the block I started to wonder about the Gland Rings. It appears in the Service Bulletins that they were eliminated at some point? (page 312). Then the Service Bulletins mention that the gasket was changed again (Page #562). No mention of the Gland Rings.
My question is should they be used or not. Thanks
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Old 08-12-2018, 07:07 PM   #2
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Default Re: Exhaust manifold Gland Rings.

I just went thru that process. Use copper manifold gaskets and do not use gland rings(much more trouble than they are worth). Do not over tighten bolts, make them snug to 25-30 lbs. with a torque wrench; they sealed and performed beautifully!
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Old 08-12-2018, 11:01 PM   #3
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Default Re: Exhaust manifold Gland Rings.

I put one set of gland rings in not worth the effort I also use the copper gaskets and the 25-30 torque no problems
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Old 08-12-2018, 11:23 PM   #4
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Default Re: Exhaust manifold Gland Rings.

Your choice but if rings can be fitted I would.
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Old 08-13-2018, 10:05 AM   #5
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Default Re: Exhaust manifold Gland Rings.

The gland rings protect the gasket from burnout from the high temperature exhaust gases and direct flame impingement. The glands continued in the Improved 4-Cylinder Engine of 1932-34.


By the way, copper's melting point is 1981 degrees F, and steel's melting point is about 2500 degrees F. Exhaust gas temperatures are approximately 1000 to 1400 degrees F.


The thin sheet metal construction of exhaust gaskets makes the copper and steel in the gaskets vulnerable to burnout below their melting points.
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Old 08-13-2018, 10:56 AM   #6
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Default Re: Exhaust manifold Gland Rings.

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For installing my rings they are split, I opened them a little and then close them and they hold themselves in place. You still need to make sure that you don’t knock them out when you install the manifold and gasket.
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Old 08-13-2018, 11:17 AM   #7
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Default Re: Exhaust manifold Gland Rings.

I installed them when i put a new manifold on as it would line up. I like the idea of them being there to support the manifold on #1 and #4 cyl and also provide a better seal than gasket alone.

Take the bare exhaust manifold, get the rings to stay in the block as per above, then dry fit the manifold. it should be fully flat(or very close) against the block with the rings present so when you go to torque down the manifolds with gasket your compressing the gasket and not bottoming out on the rings.
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Old 08-13-2018, 12:24 PM   #8
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Default Re: Exhaust manifold Gland Rings.

Use the rings. The whole reason they added and experimented with them is to stop the sagging ant to keep the gaskets in place. Pay attention to the procedure that Sea Slugs laid out about prefitting the manifold assy.
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Old 08-13-2018, 02:03 PM   #9
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Default Re: Exhaust manifold Gland Rings.

I think that it was a very short window in 1930 Ford stopped using the rings, then they went back.
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Old 08-13-2018, 02:13 PM   #10
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Default Re: Exhaust manifold Gland Rings.

Having played with the Model A Ford for about 60 years now and I have tried both with and with out exhaust manifold gland rings. I have found that "I wouldn't leave home with out them". Without them, number four exhaust port is the first one to burn the gasket out. Then by the time that you get around to replacing the manifold gasket, the manifold has eroded out some too. Choice now is to get another manifold, or get the eroded manifold machined flat again. And you have to resurface both the intake and exhaust manifold at the same time as a pair. It is easier just to use the gland rings and avoid all of the burned out gasket hassle.
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Old 08-13-2018, 03:09 PM   #11
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Default Re: Exhaust manifold Gland Rings.

Quote:
Originally Posted by redmodelt View Post
I think that it was a very short window in 1930 Ford stopped using the rings, then they went back.
Yes, I see in the January 1929 Service Bulletin that Ford stopped using the Gland Rings when they introduced the new gasket. But I don't see where it is mentioned that they started using them again. Only mentions another new gasket in May 1931.

Last edited by Ruth; 08-13-2018 at 03:15 PM.
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Old 08-13-2018, 03:30 PM   #12
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Default Re: Exhaust manifold Gland Rings.

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Originally Posted by Ruth View Post
Yes, I see in the January 1929 Service Bulletin that Ford stopped using the Gland Rings when they introduced the new gasket. But I don't see where it is mentioned that they started using them again. Only mentions another new gasket in May 1931.
Engines built between 1/20/29 & 3/15/29 had no provision for the use of the gland rings..The rest of all MFG. time they were used, & some times NOT in the intake ports..
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Old 08-13-2018, 03:47 PM   #13
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Default Re: Exhaust manifold Gland Rings.

MFG
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Old 08-13-2018, 04:53 PM   #14
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Default Re: Exhaust manifold Gland Rings.

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MFG
In other words, Use Them !!
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Old 08-13-2018, 04:56 PM   #15
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Default Re: Exhaust manifold Gland Rings.

I agree with those that say install the gland rings.
I rebuild engines and fix many engine related problems for Model A owners. I have them in my own engines and put them in the engines I can for customers. JMO
Good Day!
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