283 power Unit

molinegb · Oct 26, 2017

Have a old 283 power unit that came off a American Hoist crane. It is a gas motor with an
oddball Zenith carb. Odd thing about unit is that it has 403 heads and exhaust/intake. Any
idea why this configuration was used? To me there would be no advantage to big heads on
283.

mmfan55 · Oct 26, 2017

Curious: What are you calling a 403 head. I didn't know Moline had any engine specific heads.

ejr-IA. · Oct 26, 2017

They fit either one.What are the numbers on the head ?I have all the head no.Low compression to high.

molinegb · Oct 26, 2017

It has GE30E heads which were not common on a 283. Usually seen on a G motor not U. Not familiar with power unit configurations. Never seen such setup on any tractor from factory. To me it would be alot of volume for the displacement. Maybe higher rpm on a power unit. Carb is bigger to match intake but normally a TSx68 would be used. Odd carb as it has a accelerator plunger.

tractorguy1951 · Oct 26, 2017

I have a 1950 utu with GE 30 heads. Thought they were stock.

jr1983 · Oct 26, 2017

I also have a ITU and a UB each with one ge30e and one 4209. Make of that what you will

shinnery · Oct 27, 2017

All of the early heads were GE-30 s as I understand it, it is the suffix letter that indicates the C. R. of the heads. My chart shows the GE-30E on a 286 or 425 is for high altitude tractor fuel and on a 403 or 605 high altitude gasoline. They also show to be the equivalent to the 10A4209.

shinnery · Oct 27, 2017

Here is my chart http:/ /fiorelli. tripod.com /index-5.html
Remove the spaces.

283 power Unit

molinegb

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mmfan55

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ejr-IA.

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molinegb

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tractorguy1951

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jr1983

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shinnery

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shinnery

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