The Ford Barn

Walt Dupont--Me. · 08-30-2015, 02:28 PM

I just acquired ( that's a hard word to spell ) a set of heads off a 59 block, on the top back is 29A-6049 and 29A-50, on the front middle 29A -RH and 29A-Lh, on the bottom front ,Ford USA, Of course I know the 49 is right and 50 is left but I cain't remember seeing 29A----- in the middle. I haven't CC them but they look like a big chamber. I know I'm getting old but is that 29A common? Walt

Kube · 08-30-2015, 06:20 PM

Quote:

Originally Posted by Walt Dupont--Me.

I just acquired ( that's a hard word to spell ) a set of heads off a 59 block, on the top back is 29A-6049 and 29A-50, on the front middle 29A -RH and 29A-Lh, on the bottom front ,Ford USA, Of course I know the 49 is right and 50 is left but I cain't remember seeing 29A----- in the middle. I haven't CC them but they look like a big chamber. I know I'm getting old but is that 29A common? Walt

Walt, these are 1942 Mercury heads. By the way you describe them, they are not authentic to the assembly line. Rather, they are service replacement parts.

Walt Dupont--Me. · 08-31-2015, 06:03 AM

Quote:

Originally Posted by Kube

Walt, these are 1942 Mercury heads. By the way you describe them, they are not authentic to the assembly line. Rather, they are service replacement parts.

Thanks Kube, they don't look any thing special, but I've never seen 29-A on the heads before, I'll CC them just for fun. Walt

Ole Lou · 08-31-2015, 10:52 AM

I have those heads on a 59 engine, supposedly came out of 46 truck, but after cleaning up block, found a rebuild tag attached to front of engine.
Also, there is a small nut attached roughly to the center of each head. Any idea what that was for?

Bruce Lancaster · 08-31-2015, 10:52 AM

Post your CC's...I'd like to see how they compare to the book!

Book says they should be 78-80 CC's.

Walt Dupont--Me. · 08-31-2015, 03:05 PM

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Quote:

Originally Posted by Bruce Lancaster

Post your CC's...I'd like to see how they compare to the book!

Book says they should be 78-80 CC's.

I'll try to CC those heads tomorrow. I don't know who I had time to work before I retired. Walt

Walt Dupont--Me. · 09-01-2015, 10:22 AM

Quote:

Originally Posted by Bruce Lancaster

Post your CC's...I'd like to see how they compare to the book!

Book says they should be 78-80 CC's.

Hey Bruce, I CC those 29A heads. 80CC Walt

Bruce Lancaster · 09-01-2015, 11:23 AM

On spec!

the42nut · 03-08-2016, 09:06 PM

1942 Mercury heads

These are the TWO different types of 1942 Mercury heads that I have ever seen:

on the upper back side in the center, or more often to the left front edge (or rearward edge), is embossed 29A-6049 or 29A-6050
and on the front side in the very center, between the 2nd and 3rd spark plug hole, and in between the two studs is 29A-LH or 29A-RH
on the other type of heads the backside is the same as above, but on the front, the numbers are in between the 1st and 2nd spark plug hole and higher up, below the first stud, and are embossed with 29A-L or 29A-R (the H has been dropped) On a complete motor with the oil filter in place you CANNOT see 29A-L The oil filter bracket covers this.
I have heard that there might be a 3rd type, but it has not yet been verified, that has no numbers on the front, but has only the 42 part numbers on the upper rear 29A-6049 or 29A-6050. I have never heard of any with raised numbers like on other years.
This may be what was in the 1942 and 1943 heavier trucks and buses that have the 100 HP Mercury engines. I don't know. I still have yet to research this and verify. They may have come with the very plainly marked heads listed above.

By the way, the correct engine, 42 Mercury only, 239 cubic inch, has the raised intake deck (like a 1941) but with the factory milled relief between the cylinders and the valve area. This was the basis for the 45 to 48 postwar 100 HP motors and why Ford then used the Mercury 99A VIN numbers for Ford cars and trucks. These 42 heads also have the larger volume CC that the postwar heads copied. The correct colors for these heads and motors is the Dk Blue (not the dark green or silver in the following photos)

Compiled by Mercury Ed the 42 nut

the42nut · 03-08-2016, 09:12 PM

If I can figure out how to post pictures from my email I'll enclose them

JSeery · 03-09-2016, 12:42 AM

Quote:

Originally Posted by the42nut

If I can figure out how to post pictures from my email I'll enclose them

I would download them from your email to your computer and then post them.

the42nut · 03-09-2016, 04:26 PM

rotorwrench · 03-09-2016, 07:23 PM

The L-head V8s produced during the war years may have had 29A heads on the 239CID engines produced but most of the war year stuff is an unknown quantity. The 59A series stuff came along just before the war was over. The 41A blocks were basically produced at about the same time as the early 59 series as 221 replacements. The production of the 1942 models with the acception of some truck types, came to a halt pretty early in 1942 so their aren't a whole bunch of them around to look at now days. Canadian production seems to be different in that time frame but I'm not sure how much. Suffice is to say, it probably had a Canadian reference and no USA reference in the castings.

08-30-2015, 02:28 PM	#1
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	24 studs Heads. 29A I just acquired ( that's a hard word to spell ) a set of heads off a 59 block, on the top back is 29A-6049 and 29A-50, on the front middle 29A -RH and 29A-Lh, on the bottom front ,Ford USA, Of course I know the 49 is right and 50 is left but I cain't remember seeing 29A----- in the middle. I haven't CC them but they look like a big chamber. I know I'm getting old but is that 29A common? Walt

08-31-2015, 10:52 AM	#4
Ole Lou Senior Member Join Date: May 2010 Posts: 239	Re: 24 studs Heads. 29A I have those heads on a 59 engine, supposedly came out of 46 truck, but after cleaning up block, found a rebuild tag attached to front of engine. Also, there is a small nut attached roughly to the center of each head. Any idea what that was for?

08-31-2015, 10:52 AM	#5
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: 24 studs Heads. 29A Post your CC's...I'd like to see how they compare to the book! Book says they should be 78-80 CC's.

09-01-2015, 11:23 AM	#8
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: 24 studs Heads. 29A On spec!

03-08-2016, 09:06 PM	#9
the42nut Junior Member Join Date: Nov 2015 Location: Miwaukee, Wis Posts: 5	Re: 24 studs Heads. 29A 1942 Mercury heads These are the TWO different types of 1942 Mercury heads that I have ever seen: on the upper back side in the center, or more often to the left front edge (or rearward edge), is embossed 29A-6049 or 29A-6050 and on the front side in the very center, between the 2nd and 3rd spark plug hole, and in between the two studs is 29A-LH or 29A-RH on the other type of heads the backside is the same as above, but on the front, the numbers are in between the 1st and 2nd spark plug hole and higher up, below the first stud, and are embossed with 29A-L or 29A-R (the H has been dropped) On a complete motor with the oil filter in place you CANNOT see 29A-L The oil filter bracket covers this. I have heard that there might be a 3rd type, but it has not yet been verified, that has no numbers on the front, but has only the 42 part numbers on the upper rear 29A-6049 or 29A-6050. I have never heard of any with raised numbers like on other years. This may be what was in the 1942 and 1943 heavier trucks and buses that have the 100 HP Mercury engines. I don't know. I still have yet to research this and verify. They may have come with the very plainly marked heads listed above. By the way, the correct engine, 42 Mercury only, 239 cubic inch, has the raised intake deck (like a 1941) but with the factory milled relief between the cylinders and the valve area. This was the basis for the 45 to 48 postwar 100 HP motors and why Ford then used the Mercury 99A VIN numbers for Ford cars and trucks. These 42 heads also have the larger volume CC that the postwar heads copied. The correct colors for these heads and motors is the Dk Blue (not the dark green or silver in the following photos) Compiled by Mercury Ed the 42 nut

03-08-2016, 09:12 PM	#10
the42nut Junior Member Join Date: Nov 2015 Location: Miwaukee, Wis Posts: 5	Re: 24 studs Heads. 29A If I can figure out how to post pictures from my email I'll enclose them

03-09-2016, 04:26 PM	#12
the42nut Junior Member Join Date: Nov 2015 Location: Miwaukee, Wis Posts: 5	Re: 24 studs Heads. 29A

03-09-2016, 07:23 PM	#13
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: 24 studs Heads. 29A The L-head V8s produced during the war years may have had 29A heads on the 239CID engines produced but most of the war year stuff is an unknown quantity. The 59A series stuff came along just before the war was over. The 41A blocks were basically produced at about the same time as the early 59 series as 221 replacements. The production of the 1942 models with the acception of some truck types, came to a halt pretty early in 1942 so their aren't a whole bunch of them around to look at now days. Canadian production seems to be different in that time frame but I'm not sure how much. Suffice is to say, it probably had a Canadian reference and no USA reference in the castings.