Landracing Forum
Tech Information => Technical Discussion => Topic started by: zenndog on March 18, 2012, 06:09:55 PM
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I just wanted to post some pictures of a Morton and Brett Head Rich is running on his 1926 Dodge Banger.
Many of you have seen Rich's build thread (http://www.landracing.com/forum/index.php/topic,6487.0.html ) but I thought people would find it interesting to see some close up pictures of a very rare speed part from the 20's for a non-Ford make.
This head is on loan to Rich Fox by a collector in Hayward, CA and will be run at Bonneville in Rich's '29 ford roadster.
It has three exhaust ports, the center is for two #2 & #3 cylinders
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010051.jpg)
It has two intake ports shared by the #1 & #2, #3 & #4 cylinders respectively
Note the holes under the ports along the bottom edge of the head? Those are the spark plug holes, they enter the combustion chamber at a 90 degree angle. The combustion chambers are so tall that the plugs come right out on the side.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010037.jpg)
Here a closeup of one of the intake ports. The head bolt runs through the center. Rich plugged the top of the hole and the stud ends inside the port so the nut and washer end up inside the port. Rich figured it was better than the entire stud running through the port.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010041.jpg)
On the exhaust side there is a small "alcove" for the head bolt under the end ports.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010043.jpg)
Here is the top of the head, Rich fabbed his own rocker shaft supports as the originals were missing. There are old repairs evident, apparently these heads had a habit of pulling out the rocker shaft supports. It seems the priginal setup had 4 pedestals to support the shaft. All the holes were plugged when Rich received the head.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010038.jpg)
Here is the rocker arm assembly Rich fabbed, the rocker shaft and roller rockers were made by a professional shop, but Rich fabbed the plate and the pedestals. Sorry we don't have any shots of the original rocker arm setup.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1000982.jpg)
Here is the underside with the massive combustion chambers showing. The spark plugs are in so you can see how they mount to the head.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010028.jpg)
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010027.jpg)
Here is a detail shot of one of the end chambers. The "bump" was added by Rich because the head as cast/machined originally left only .040 to seal between the head bolt and the combustion chamber. When preparing for final installation of the head to the engine we discovered that on the #4 cylinder the piston, which has a massive dome, was hitting the "bump" Rich had welded in so we needed to grind it down with the die grinder to give more clearance.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010026.jpg)
The head has one water passage for outlet at the front of the head, Rich made a plate with an AN fitting to attach to the water pump system in his roaster.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010039-1.jpg)
Here is a picture of the head on the engine. Note the water lines are connected. Inlet goes to the block and outlet through the head.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/P1010055.jpg)
I will get some pics of the valve cover.
Thanks for look'n, hope you found it interesting.
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Thank you for showing it to us.
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Zenndog,
Thanks for posting the pictures, extremely interesting. As I have said many times Rich is a true innovator, a real hot rodder!! and this Dodge just proves it again! How big are the valves? They look big.
Rex
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Geeze. A guy can't have any speed secerts anymore.The valves are 2.060. The combustion chamber is 4.300 for a 4 inch bore.and a nominal .830 deep. Piston domes are .510 proud.
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The valves are big, and the exhaust and intake are similar if not the same.
Rich will have to comment on the specific size but they are at least 2" with a 3/8 stem.
Those are valves that came with the head when Rich picked it up from the guy in Hayward who owns it, who knows what they were from, they were in a box and there are more left over. Rich decided to go ahead and use them and the person who did the valve work had to grind them to be the proper length.
It is a pleasure to work with Rich, he is the kind of person that just always has a good handle on the pro's and con's of every choice in a build.
It has been a real learning experience.
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Geeze. A guy can't have any speed secerts anymore.The valves are 2.060. The combustion chamber is 4.300 for a 4 inch bore.and a nominal .830 deep. Piston domes are .510 proud.
Sorry Rich....I guess next year at Bonneville everyone will toss out those SB2 so they can get massive pop-up pistons and size matched intake and exhaust valves :evil:
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You're going to need some fairly long reach plugs to get spark anywhere near the combustion chamber.
A handy guide can be The Green Sparkplug Company over in the UK. (gsparkplug.com)
You can input the thread and reach while sorting through suitable plugs.
You'll need a bushing if that's something like a 3/4 tread.
A 14mm plug with a 1.04" reach seems about right from the picture. But there are 1" and .98" reach plugs also.
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I am considering plugs such as used on newer Ford mod motors.
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A picture of the head torked on the engine and the exhaust system roughed in.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/P1010406.jpg)
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That is one cool looking 4 banger! :cheers:
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It's different at least
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That is one cool looking 4 banger! :cheers:
Looking Good :cheers: :cheers: :cheers:
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It's different at least
And that's precisely why I watch your projects. Most anyone can build an acceptable SBC - very few can build an exceptional 85 year old Dodge banger. :cheers:
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Now that its bolted in I never realized the motor was so tall. That little beast should be a screamer. Tony
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Buddy has a thing for tall engines.
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Looking good Rich! Glad we got to see it in person this Winter. See you on the salt. Hopefully it will be a good year for old Dodge bangers! :-D
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We were washing the car off this weekend, forgot to take pictures. Here is a picture of the engine with the coated headers installed.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/P1010513.jpg)
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/P1010515.jpg)
Oh yeah, this is the head thread. I think I posted these pics already on the build thread.
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I sent this to Rich today. I found it on the Hamb. It is a picture of the combustion chambers on a Frontenac head. Same massive chambers, same 90 degree plug position. Just thought it was interesting.
(http://i301.photobucket.com/albums/nn70/zenndog/1926%20Dodge%20Morton%20and%20Brett%20head/1926%20Morton%20and%20%20Brett%20Head/FrontenacChambers.jpg)
I believe it is for a T