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12-19-2021, 08:26 AM | #21 |
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Join Date: Jan 2012
Location: Western North Carolina
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Re: Exhaust manifold glands
The Model T exhaust manifold would warp without the glands. Cast iron will expand when repeatedly heated. The exhaust manifold on the Model T was designed with more metal on the top so that it would warp down at the rear over time and the rear hole would not be aligned. The Model A exhaust manifold is a lot better design and will not warp nearly as much. Even so, some additional material was added in 1931. The glands are a carryover from the Model T.
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A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past. |
12-19-2021, 09:09 AM | #22 |
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Re: Exhaust manifold glands
I have a waffle manifold. No warpage . I leave it on the year around but remove the housing in the summer.
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12-19-2021, 09:34 AM | #23 | |
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Re: Exhaust manifold glands
Quote:
Jim |
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12-19-2021, 04:16 PM | #24 |
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Location: Walla Walla, WA
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Re: Exhaust manifold glands
Me too. Besides, I have an Autolite waffle manifold that hasn't sagged in all these years, it probably won't with my 5 or 6k miles per year either.
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12-20-2021, 12:10 PM | #25 |
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Re: Exhaust manifold glands
Follow up report - the new exhaust manifold finally arrived (five days late, thank you FedEx), I dry fitted it with the old intake manifold and the assembly was straight and consistent within about 0.003". When I fitted the assembly to the block with glands installed but without the gasket it snugged down just fine. So on with the gaskets and tightened to 35 ft-lb. We'll see how it runs once I get the gooseneck back on (had a radiator leak I'm working on at the same time, took this opportunity to clean up the gooseneck.)
JayJay
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JayJay San Francisco Bay Area ------------------------ 1930 Murray Town Sedan 1931 Briggs S/W Town Sedan |
12-20-2021, 12:28 PM | #26 |
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Re: Exhaust manifold glands
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12-20-2021, 04:34 PM | #27 | |
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Re: Exhaust manifold glands
Quote:
JayJay
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JayJay San Francisco Bay Area ------------------------ 1930 Murray Town Sedan 1931 Briggs S/W Town Sedan |
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12-20-2021, 05:04 PM | #28 | |
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Re: Exhaust manifold glands
Quote:
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12-20-2021, 05:33 PM | #29 | |
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Re: Exhaust manifold glands
Quote:
There's a decent amount of weight hanging off the intake and exhaust manifolds. You'll have trouble keeping them sealed against the block with your method. |
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12-20-2021, 06:48 PM | #30 | |
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Re: Exhaust manifold glands
Quote:
JayJay
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JayJay San Francisco Bay Area ------------------------ 1930 Murray Town Sedan 1931 Briggs S/W Town Sedan |
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01-09-2022, 08:01 AM | #31 |
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Location: Williamsburg, VA
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Re: Exhaust manifold glands
Mild steel or stainless? NAPA sells 1.5" OD aluminized mild steel exhaust tubing by the foot.
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01-09-2022, 12:12 PM | #32 |
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Re: Exhaust manifold glands
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01-10-2022, 06:17 PM | #33 |
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Re: Exhaust manifold glands
Same as Bill (#24) for me.
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