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Antique Steel Wheel Tractors - Old Iron Lugs and Cleats Photos and information about antique steel wheeled farm tractors. This is where to find the heaviest of Old Iron tractors.

Antique Steel Wheel Tractors - Old Iron Lugs and Cleats

WK40 Mccormick - how many are out there?


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  #21  
Old 03-17-2013, 05:32:35 PM
Nick Feltis Nick Feltis is offline
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Default Re: WK40 Mccormick - how many are out there ?

My WK-40 is a little cobbled, it has the RD450 and points instead of a mag. and my governor runs of the V-belt for the fan. Plus I was to cheep to by a brand new recast manifold so I found a good truck manifold with a Holly carb. The biggest fight I had with that is the truck manifold card has that air governor on it and it fights with my belt governor, the first time it revved why to high. I got it idled down now but have no throttle response and no power. And the truck manifold is wrecking the paint on the frame, because its a down draft system like most truck manifolds and now I have a hole in my hood not being used. When most people put these manifolds on what steps are they taking? I know some pullers say with a 450 with the truck manifold the can out pull most 3020 JDs and some 4020. I'm not looking to do any pulling but I would like to belt up to the sawmill someday so the power would be nice.
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Old 03-17-2013, 05:39:42 PM
Mark Schneider Mark Schneider is offline
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Default Re: WK40 Mccormick - how many are out there ?

Thanks Eric for passing the information along. We are giving some thought to repowering one of our W-40's with a truck motor as the pile of reusable FBB 298 parts is not very large at this point.
Some data to add to your conversion info:
1. The open back pilot bearing can be replaced with a SKF 6206-2ZJ sealed bearing.
2. An Oliver 77 starter is supposed to be a bolt on fit. (I have not tried this yet). It would take extensive modification of the air cleaner pipe on a crank start model to make this work.
You are right about the flywheel...I believe that it's the heaviest I've ever encountered on a 6 cyl.

I had admired this WK-40 ever since I met my friend Lee. I suggested that we get this tractor running to use on the thresher and to make a vintage entry at a local plowing day. The engine was still loose....I thought how hard can this be? The only premonition of bad things to come was a crack in the water jacket behind the carb. It turned out that the block web between the cylinders was cracked on the top AND the bottom. To make matters worse the oil pump drive gear on the camshaft had stripped out and there where 4 burned out rod journals on the crankshaft. The worst journal was .070 under STD. The oil pump shaft was bent and the top of the housing has broken just below the gear. Not exactly the kind of news we wanted to hear....
So the search for parts has started.

Serial # on this tractor is WKC 2811.
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Old 03-17-2013, 07:17:14 PM
Lyn Jones Lyn Jones is offline
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Default Re: WK40 Mccormick - how many are out there ?

The Oliver 77 starter is a bolt on fit. It just needs a 5mm (3/16th) spacer for the starter drive (Bendix) to clear the flywheel ring gear.
The existing air cleaner to carb pipe can be carefully cut and welded to clear the starter. I've done it on two WK-40's.
I still own the 1936 one on steel, but have sold the 1937 model on rubber. Pics of the tractors were taken before being fitted with starters.

1936 Serial no WKC 2866
1937 Serial no WKC 6628
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  #24  
Old 03-17-2013, 07:27:47 PM
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Eric Best Eric Best is offline
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Default Re: WK40 Mccormick - how many are out there ?

Bahart - Nice picture of the wheel. This has the shoulder for the dual extension drum. Briefly, dual 32" wheels were approved for the W-40 and WD-40, then disapproved by IH because of insufficient clearance between the tires. I wonder if this might be part of one of those setups. One last thing I'd ask you to check. Is there a spacer between the hub and the seal sleeve on the inside of the hub? If so, these could also be an F&H center for dual wheels on an I-9, I suppose, although I have an I-9 on duals and the hubs do not have these markings.
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Old 03-17-2013, 09:58:23 PM
Mark Schneider Mark Schneider is offline
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Default Re: WK40 Mccormick - how many are out there ?

Quote:
Originally Posted by Lyn Jones View Post
The Oliver 77 starter is a bolt on fit.
Thanks for the confirmation on the starter information and the informative picture description of the air cleaner pipe alteration. It came out very nicely.
Do you have any info on how many WK-40, WD-40 tractors still exist in the UK?
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Old 03-17-2013, 10:35:08 PM
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Brian Ahart Brian Ahart is offline
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Default Re: WK40 Mccormick - how many are out there ?

Eric, thanks for the information. I'm not aware of a spacer, but will double check.
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Old 03-22-2013, 03:00:16 PM
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Retrofit88 Retrofit88 is offline
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Default WK40 Mccormick - how many are out there ?

Dudley has a WK-40 and WD-40..both are 1938.
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Old 03-22-2013, 10:18:57 PM
Mark Schneider Mark Schneider is offline
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Default Re: WK40 Mccormick - how many are out there ?

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Originally Posted by retrofit88 View Post
Dudley has a WK-40 and WD-40..both are 1938.
Nice tractors. The WK appears to have the 34" drop center rims that Eric alluded to in a earlier post. It looks like they are a nice fit. We were thinking of doing this on one of our W-40's to replace the junk 32" rims. 18.4 X 34's are taller than the original tires...should a guy stick with 16.9 X 34's instead?
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Old 03-22-2013, 11:42:32 PM
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Default Re: WK40 Mccormick - how many are out there ?

You can't do much with the 18.4 but parade it. Any mud or dirt that sticks to the tires will interfere with the fenders. The 16.9 is just fine.
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  #30  
Old 03-23-2013, 04:12:58 PM
Titan1020 Titan1020 is offline
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Default Re: WK40 Mccormick - how many are out there ?

Wondered where the WD-40 went. Belonged to a good friend of mine here in Ohio. Ran it for him at shows many times. It's one fine WD-40. Known it's whereabout for about 30 years.
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