The Ford Barn

rustythumb · 01-26-2018, 09:03 PM

was looking at a friend's '41 merc the other day & noticed that it's left manifold has it's outlet further forward than my ford manifold. [evidently to clear the steering box] the ford parts book seems to show the same part # for ford & merc. can any one explain this? also, does anyone know of any photos of all the different stock exhaust manifolds made by ford? thanks!

V8COOPMAN · 01-26-2018, 10:25 PM

Quote:

Originally Posted by rustythumb

was looking at a friend's '41 merc the other day & noticed that it's left manifold has it's outlet further forward than my ford manifold. [evidently to clear the steering box] the ford parts book seems to show the same part # for ford & merc. can any one explain this? also, does anyone know of any photos of all the different stock exhaust manifolds made by ford? thanks!

The base number for a left hand manifold WOULD be the same for a Ford and the Merc, but are you sure that the PREFIX number for the Merc wasn't different than the Ford PREFIX? I'm guessing that the Ford prefix for a '41 would be "11A-", whereas a '41 Merc would probably have a "19A-" prefix. I don't have a parts reference handy at the moment. DD

Gary in La. · 01-27-2018, 11:48 AM

The Ford prefix is (78) and the Merc prefix is (19A) for the 1941 L/H exhaust manifold.

These numbers were verified with the 1938-46 FORD & MERCURY illustrated parts catalog.

Mart · 01-28-2018, 01:54 PM

Sponsored Links (Register now to hide all advertisements)

I have 2 lh manifolds that have the exhaust outlet further forward than some others I have. I think it's just a early/late thing rather than a Ford/Merc thing. My later manifolds have the outlet further forward than the earlier type. The earlier ones are more log like, the later ones have at least a small attempt at improving the gas flow. Both the ones with the outlet further forward came on 59A engines, though that proves nothing, I guess.

If anyone can say for sure whether Ford/Merc or early late, I would find that info interesting.

Mart.

01-26-2018, 09:03 PM	#1
rustythumb Senior Member Join Date: Jun 2010 Location: orange co. ca. Posts: 178	question about exhaust manifolds was looking at a friend's '41 merc the other day & noticed that it's left manifold has it's outlet further forward than my ford manifold. [evidently to clear the steering box] the ford parts book seems to show the same part # for ford & merc. can any one explain this? also, does anyone know of any photos of all the different stock exhaust manifolds made by ford? thanks!

01-27-2018, 11:48 AM	#3
Gary in La. Senior Member Join Date: May 2010 Location: Louisiana Posts: 866	Re: question about exhaust manifolds The Ford prefix is (78) and the Merc prefix is (19A) for the 1941 L/H exhaust manifold. These numbers were verified with the 1938-46 FORD & MERCURY illustrated parts catalog. Last edited by Gary in La.; 01-28-2018 at 07:20 PM. Reason: add info

01-28-2018, 01:54 PM	#4
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,775	Re: question about exhaust manifolds Sponsored Links (Register now to hide all advertisements) I have 2 lh manifolds that have the exhaust outlet further forward than some others I have. I think it's just a early/late thing rather than a Ford/Merc thing. My later manifolds have the outlet further forward than the earlier type. The earlier ones are more log like, the later ones have at least a small attempt at improving the gas flow. Both the ones with the outlet further forward came on 59A engines, though that proves nothing, I guess. If anyone can say for sure whether Ford/Merc or early late, I would find that info interesting. Mart.