Winsun Air Cooled V-Twin Diesel Repower

Shrewcub · #1 03-25-2014, 12:42 AM

Well I got to work this morning and noticed a big wooden crate on the floor. I didn't really get a good look at it until I left. I snapped a few pics for everyone. Included was an extra air, fuel, and oil filter. A complete gasket set, flywheel puller, one set of rings, and one connecting rod bearing (is that a bad sign? lol) were also in the bag with the manuals.

My main focus was the flywheel area so I can figure out how to attach the drive shaft. I think that will be the only real hurdle. I am still unsure which tractor to put this in. I have 2 with no motor in them at the moment. My original plan was to put it in the 2072. But 2 weeks ago I picked up the 782 with no motor.

The M20 is on the bench being cleaned up and resealed. It does have some noise from camshaft end play, that I am not real concerned with. I want some opinions, what engine would you put in each tractor if it was you?

The 782 will have a sleeve hitch and the 2072 will get a cat 0. Neither will see much if any grass killing, that belongs to the 1864. The 2072 will get the 450 snow blower in the winter due to the power steering and brakes. The 782 will get the plow and just making me look sexy!

Thanks for your input! I should get some better pics by the weekend.

wm-webb · #2 03-25-2014, 06:21 AM

Diesel + 2072
M20 + 782

That was easy, next.

Sam Mac · #3 03-25-2014, 08:09 AM

Travis

This looks like it will be an easy re-power. Looks like it will be easy to make a drive shaft adapter to bolt to the flywheel something along the lines of what Mid West Super Cubs makes for the Kohlers. If the engine will fit under the hood with the fuel tank that comes on the engine I'd probably use it and remove the Cub tank.

ken6x6 · #4 03-25-2014, 06:49 PM

what kind of power does that winsun put out?

Shrewcub · #5 03-25-2014, 07:04 PM

A1biofuel, whom I purchased it from, advertise it as 22 max HP. Carroll Stream sells the same one with their stickers on it and without a fuel tank and claim 20 HP. The specs from Winsun say 12 kW at 3600 rpm. That converts to 16.3 HP.

It produces 38 Nm of torque, which is about 28 ft/lbs, at 2600 rpm. I think it should do some work! Here is the spec page from A1 http://a1biofuel.net/Winsun-25hp-Specs.html

Shrewcub · #6 04-12-2014, 03:29 PM

Well after bringing it home and completely unboxing it, I discovered I overlooked a crucial dimension. The width of the mounting plate is too wide to fit between the frame rails. It has two drain plugs, one on each side. It is 13 inches wide. The frame rails are 12.5 without the nuts for the QA shoulder bolts.

The Magnums were slightly offset to the right. Even if I removed the QA bolts and nuts, and shoe horned it in, the drive shaft would need cv joints to account for the angle. Even then the drive shaft would probably rub the steering column.

The frame would also have to be relieved or widened at the back also, to account for how wide the fan housing is.

Here are some pics. I guess I am gonna order a Vanguard

I really want to start this thing!! Do y'all (J-Mech) think I can properly seat the rings with no load?