replacing 263 gas with a D282 in Farmall 656

GR Gold · Jul 21, 2012

I purchased an excellent 656 gas tractor with just 895 origional hours but the engine is bad stuck and has water in the #3 and #4 cylinders. It sat many years with the exhaust uncovered after the owner passed away. I also now have aquired a 1959 diesel 560 that runs like a top with virtually no blowby and the previous owner claims to have had it rebuilt years back. What would be involved in putting the D282 in the 656? Looks like the front motor plate would have to change, although I might be able to drill holes in the frame rails, and the rear motor plate would be different. What flywheel and starter would I have to use? Would I benefit from a later model Standadyne injection pump over the Roosamaster pump on there now, or could the earlier pump be turned up for more fuel and or rpm? The 656 is a 1968 model. Probably need a diesel return fuel line. What else am I overlooking and would anybody else consider doing this? Would this change the value of the 656 tractor or should I rebuild the gas motor? I appreciate all your replies!

K-1 Krusher · Jul 21, 2012

I recently asked myself the almost exact same question, only I had a 706. I was on a small budget and winded up replacing the worn out 263 with another 263. After using the 263 to brush hog with a few months, and filling up the fuel tank, I tthink I should have gone to the extra trouble and put the 282 in. If you have both tractors side by side, I bet you"ve got everything you need.just my thoughts

armand tatro · Jul 21, 2012

Why ruin a good running 560 Diesel when you can get the same 282D engine from an old 715 combine?? Armand

mkirsch · Jul 21, 2012

I suspect pretty much everything below the hood, ahead of the bell housing, and behind the front bolster, is different from gas to diesel.

You'd need frame rails, front and rear engine plates just to get the engine mounted. You might need the diesel radiator.

If the 560 is in good shape, don't knock it in the head for the 656. Easiest thing would be to find a 263 in an old 403 or 615 combine, or a 282 diesel and do the swap with a combine engine.

the tractor vet · Jul 21, 2012

Myself i would put the gasser out and strip it down and make a C291 out of it and never look back . Lot less head aches and a lot less money. And i can tell ya first hand that a C291 will run with a D361 And the difference in fuel ain't worth talking about. And when winter comes it will start a lot faster then any diesel .

K-1 Krusher · Jul 21, 2012

I might be wrong but I believe the two blocks are the same, as far as bolting in, swap out rear engine plate, front cover and ithink flywheel. The rest as stated is the hard part. Might be easier to swap front halves, minus flywheel and your tin work. Again this is only my thoughts after going gas again. I also only have one tractor and it being my first gasser.

K-1 Krusher · Jul 21, 2012

Going witth a combine engine is also not a bad way to go, but here in mid MO those harvesters are just about all parted out. But if you can find one don't forget about the fuel delivery system.

mazemeister · Jul 21, 2012

i guess my question is, why not just use the 560? it's a pretty comparable tractor to the 656 just different tin.

randy hall · Jul 21, 2012

armand, the 715 combine engine would be a sleevless d-301. or a late one would be a d-310.

GR Gold · Jul 21, 2012

The 560 is missing some of the sheetmetal, the power steering is shot, the hydraulics are poor, and it has a quick hitch with a bad lift cylinder, poor rims and tires etc. The tranny is quiet and the TA works good though. The 656 is just such a nice tractor and it has a 3 point. I plan on getting the 656 running, just thought I might use the diesel 282 since it is such a good runner, and save the cost of rebuilding the 263 gas motor.

pete 23 · Jul 21, 2012

This is what makes the world go around. Everyone has different ideas. The engines will pretty much interchange with switching front covers and rear mounting plate. On the difference between 560 and 656 there is a whole lot of differences Different transmission, final drive, hydraulic system, three point hitch, shifting controls. Same principles with 5 speed transmission and bull gear drive but done in different case. Tapered roller bearings on axles and bull pinions on 656. Hydraulic pto, brakes that can be adjusted for wear by removing shims. Just a whole lot of difference's.

d282 · Jul 21, 2012

I agree with Tractor Vet.

Owen Aaland · Jul 22, 2012

You will need a front cover from a D656 or early D706 tractor. The rear plate from the gas engine will fit on the diesel but you will need a diesel flywheel from a 656 and a diesel starter. Diesel tractors used two batteries but you may be able to get by with a high amperage battery and heavy cables. You won't be using the ignition circuit but you will need to add the glow plug circuit. If you stay with the 560 injection pump you will need a longer choke control cable to operate the fuel shut off on the pump. You will also need the throttle linkage, diesel fuel filters and connecting pipes, (possible the fuel tank also) and air cleaner to manifold hose/tube. The hood will have the exhaust pipe hole on the wrong side when you switch to a diesel.

dan osborne · Jul 22, 2012

So I will need to find a diesel flywheel and starter from a 656? I was hoping to use the 656 gas flywheel and maybe the starter from the 560 diesel. Is the gas flywheel a different weight or balanced differently? Is there any difference in the flywheel ring gear? Thanks!

Owen Aaland · Jul 23, 2012

You might be able to get by using the gasoline flywheel and D560 starter.

The gas flywheel has a little larger diameter ring gear and uses a starter drive with either a 29mm or 32mm OD gear. The diesel starter uses a 32mm OD gear for a hydro tractor and a 36 mm OD gear for a gear drive tractor. The 560 starter will have a 40mm OD gear. I don't know for sure if the 560 starter end frame will bolt in to the 656 housing but the drive problem could be solved but switching to the correct dimensional drive gear.

replacing 263 gas with a D282 in Farmall 656

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