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404 engine differences

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mike

01-26-2003 12:36:15




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Would a turbo 404 from a 7700 combine work in a early 7020 with a rotary pump engine? Are the blocks all the same? I was once told the 4WD tractors had a different block. Any help would be appreciated. Thanks Mike




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Carl R

01-31-2003 20:47:36




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 Re: 404 engine differences in reply to mike, 01-26-2003 12:36:15  
One thing to watch when swapping a combine engine into a tractor is that the injection pump must be reworked for a tractor. The combine pump is set up different (torque curve) and in stock form in a tractor will not pull the hat off your head. The right pump makes a huge difference.



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WTW

01-27-2003 12:32:20




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 Re: 404 engine differences in reply to mike, 01-26-2003 12:36:15  
mike, The engine in your early 7020 is nothing more than a 4620 tractor engine. The engine you are referring to, out of the 7700 combine is basically a 4430 tractor engine. The blocks are not the same. Good news is the combine engine will bolt in the tractor without to much of a problem and is a better setup for it. You will have to use the oil pan from your old engine and may have to change the oil sump on the oil pump. Only other thing would be a slight alteration with the throttle linkage. Exhaust outlet location may be different. If it is the manifold and turbo off your original engine would work if you had to use it. I have seen this later engine in 7020's before. I also have one of these engines I would sell that I just pulled this fall out of a running 7700 turbo / hydro combine. I also have a late model 4020 diesel engine I would sell. Good Luck, Dave W.

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twopop

01-26-2003 15:33:05




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 Re: 404 engine differences in reply to mike, 01-26-2003 12:36:15  
I dont believe the two are that similar.took a combie engine and put in a 4020,but i think the fuel pump is differant on a 7020



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