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Rosswith 
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Joined: 30 Oct 2016
Location: Ontario Canada
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 Topic: All Fuel WD-45
Posted: 07 Jun 2023 at 8:53am |
Hi all, I was wondering if anyone had some literature on the All Fuel engine version of the WD-45. I did try the search function and got a lot of non-returns and some info on B and CA engines. If I'm mistakin' please remove this post and point me in the correct heading!
Mine seems to have the all-fuel manifold (large bolted on square in the centre allowing the exhaust section of the manifold to warm the intake area), and the cutout with three bolt holes for the gasoline starting tank in the hood (Admittedly for years I though this was a spot for power steering, and it very well may be, as my JD has it on the end of the fuel tank). This particular machine has always ran really rich as well, even when I lean it right out, when loaded up it looks like a diesel. 
What I'm curious about is getting it to run on Kerosene again. I've found about 130 gallons that I can have for free (and more if I want it), and thought, "well that's cheap plowing".
What are your thoughts on this?
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DrAllis
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Joined: 12 Sep 2009
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Posted: 07 Jun 2023 at 9:08am |
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A WD-45 on gasoline was 43 HP on the PTO and 45 HP on the belt pulley. To achieve that HP level the compression is increased to make the best use of the higher octane fuel. A kerosene burner would probably have less than 35 HP and NEEDS lower compression pistons to work or the engine will detonate. Free fuel ??... still a bad idea.
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Rosswith
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Posted: 07 Jun 2023 at 9:53am |
DrAllis Thanks for the reply. Although you may have misinterpreted what I'm trying to get at here.
Did they not make a factory low compression version of the WD-45? Tractor Data seems to think they did, and with the manifold and what not on mine, I believe mine to be just this, an All Fuel Engine. Is there a decent way to confirm what I've got without pulling the head? What would the visual cues on the pistons be for a low compression engine be? I could always scope the engine, but that just shows me the crown of the piston. Are there any other indicators. I know that other manufacturers around this time made duel fuel engines, like my old JD, starts on gas runs on kero or distillate depending how you've set it up.
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DrAllis
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Posted: 07 Jun 2023 at 10:56am |
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Run a cranking compression test with all four spark plugs removed, hand throttle wide open and a battery charger on the battery to keep cranking speed consistent. 120 psi for a gas engine. I think 90 psi for kerosene. EDIT: 130 psi gasoline........90 psi kerosene.
Edited by DrAllis - 07 Jun 2023 at 5:00pm
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Rosswith
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Posted: 07 Jun 2023 at 11:06am |
Thank you!!! I'll do this as soon as I get home!! I'll let you know how it goes.
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Brian G. NY
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Posted: 07 Jun 2023 at 12:30pm |
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I'm curious.....does your WD-45 have the radiator shutters usually associated with low octane fuel tractors?
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Mfam8
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Posted: 07 Jun 2023 at 12:37pm |
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Would not block have been a "k" suffix if it were a kero model ? I know earlier blocks were, coded as K, however, I know some code changes happened about the time 45's were new, with the PA codes, and shortly thereafter the M, and V codes came about. But surely the low grade fuel tractors had a code still? Might at least give a bit of information if the engine was built that way originally at least.
Edited by Mfam8 - 07 Jun 2023 at 12:38pm
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Rosswith
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Posted: 07 Jun 2023 at 1:29pm |
The shutters are removed, but the actuation handle is still hanging on for dear life. It's been a working tractor it's whole life, and the former owner was a little tough on it. Some of these things I'll be putting back right, others, well, its got its workin' cloths on. 
I will take a look at the block when I get home. On the road today, so it will be Thursday before I get a chance to take a peek. Thanks for the info, and pointing me in the right way!!!
I've got 15 acres that we're experimenting with this fall and all next year. Going to run it all with the old WD45 and the All Crop 66.
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Les Kerf
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Posted: 07 Jun 2023 at 2:14pm |
 DrAllis wrote:
... Free fuel ??... still a bad idea. |
Over the years I have taken several hundred gallons of 'free fuel' and burned it in my 1941 John Deere Model "A" All-Fuel tractor. Most of this was diesel fuel that various persons had inadvertently contaminated by pumping gasoline into their diesel vehicles, but I did score 110 gallons of free kerosene once, it burned just fine too. I'll take all the free fuel I can get 
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Les Kerf
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Posted: 07 Jun 2023 at 2:26pm |
Rosswith wrote:
..I could always scope the engine, but that just shows me the crown of the piston. Are there any other indicators...
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My WD/WD45 shop manual states that some of these engines used cast iron pistons; seems like I read somewhere that these were for the All-Fuel engines. I could be wrong though. Edit: The cranking compression test as suggested by Dr. Allis is the best way to figure it out. The shop manual shows a compression ratio of 4.75:1 which would be about right for kerosene.
Edited by Les Kerf - 07 Jun 2023 at 2:34pm
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Rosswith
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Posted: 10 Jun 2023 at 9:06am |
Sorry for the late reply, got a little more busy than I thought I would be this week.
Mfam8 wrote:
Would not block have been a "k" suffix if it were a kero model ? I know earlier blocks were, coded as K, however, I know some code changes happened about the time 45's were new, with the PA codes, and shortly thereafter the M, and V codes came about. But surely the low grade fuel tractors had a code still? Might at least give a bit of information if the engine was built that way originally at least.
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So I've got 2 numbers on the block first in 45-2519-G and the second is mostly illegible but starts with AM 
This is a photo of the manifold in question. I want to do a compression test, but my tester has grown legs again  . New one on order. On another note, does anyone out there have a stock all fuel set up. I want to know where the valves and starting tank are situated. Some photos would be most helpful. Thanks to all for all the help and responses.
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Michael Crowe
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Posted: 10 Jun 2023 at 10:17am |
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The engine serial number should be 45-xxxxxx-K. The block itself isn’t different but if you going to the trouble to put together a 45 kerosene tractor the value won’t be as much to a collector if its not correct. The carburetor number is tsx 561. Im going from memory on that but i think its right. There were two low compression pistons, the one mentioned by dr allis and I believe oparts book shows a 5.0 compression piston as well. The manifold pictured is a gas manifold. All kerosene manifolds had the exhaust on the bottom and a 45 kerosene manifold will be virtually impossible to find. A wd kerosene manifold wont work as the air breather is bigger and will hit it. The 45 K manifold has a 45 degree bevel on the #4 cylinder. It should have shutters. Post the tractor serial number and i can check it against my registry of kerosene 45’s. Pm me your email address and ill send you pictures of what it should look like. Michael
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Rosswith
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Posted: 10 Jun 2023 at 10:35am |
Michael Crowe wrote:
The engine serial number should be 45-xxxxxx-K. The block itself isn’t different but if you going to the trouble to put together a 45 kerosene tractor the value won’t be as much to a collector if its not correct. The carburetor number is tsx 561. Im going from memory on that but i think its right. There were two low compression pistons, the one mentioned by dr allis and I believe oparts book shows a 5.0 compression piston as well. The manifold pictured is a gas manifold. All kerosene manifolds had the exhaust on the bottom and a 45 kerosene manifold will be virtually impossible to find. A wd kerosene manifold wont work as the air breather is bigger and will hit it. The 45 K manifold has a 45 degree bevel on the #4 cylinder. It should have shutters. Post the tractor serial number and i can check it against my registry of kerosene 45’s. Pm me your email address and ill send you pictures of what it should look like. Michael |
Now that's some knowledge!!! Thank you. PM'd. Guess that settles that. Now I just need to find myself a kerosene AC Machine!!! hahaha
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Dakota Dave
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Posted: 10 Jun 2023 at 4:30pm |
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Just put a gallon of diesel in with 4 gallons of has itll run hotter and decarbon the head. I ran a 55 gallon barrel thru my C it never ran better
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DrAllis
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Posted: 10 Jun 2023 at 6:10pm |
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I've got a WD45 owners manual. It shows a different manifold than that (still up thru the hood) and on another page shows the side outlet more like a WC would have had. It does say specifically the engine compression ratio codes for a WD were FK for kerosene and FG for gasoline which are stamped at the end of the serial number. The WD45 engine s/n should read 45-XXXXX-G or K. Nebraska Tests #499 and #511 were 45-3600-G and 45-5449-K for example.
Edited by DrAllis - 11 Jun 2023 at 7:21am
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