What engine is in my Model D grader? With pitchurz

[docmirror]

I'm cornering the market in model D graders. This is my third one. They are just too cheap to pass up. This one was 1200 and maybe I overpaid but the engine runs. And, I got a 226 set of liners and pistons with rings for my other D grader. This one also has the hub weights, and the power steering which is a nice option for these old machines.

It's been through a fire at some point, as the paint is pretty much mud color, and I can see scorch marks on the side panels. I got 6 good 9.00x20 tires which would be over $1000 right there. Anyway, I'm hoping this is a 226 with 45HP, but if not I won't be upset.

 

[JOCCO]

At one time I thought it was a WC engine May be WD. But I would not be surprised if someone put a 45 in it either. The allis experts will know.

 

[Bob Bancroft]

I'm cornering the market in model D graders. This is my third one. They are just too cheap to pass up. This one was 1200 and maybe I overpaid but the engine runs. And, I got a 226 set of liners and pistons with rings for my other D grader. This one also has the hub weights, and the power steering which is a nice option for these old machines.

It's been through a fire at some point, as the paint is pretty much mud color, and I can see scorch marks on the side panels. I got 6 good 9.00x20 tires which would be over $1000 right there. Anyway, I'm hoping this is a 226 with 45HP, but if not I won't be upset. View attachment 99523View attachment 99524

It says 45- it's a 45.

 

[Bob Bancroft]

I'm cornering the market in model D graders. This is my third one. They are just too cheap to pass up. This one was 1200 and maybe I overpaid but the engine runs. And, I got a 226 set of liners and pistons with rings for my other D grader. This one also has the hub weights, and the power steering which is a nice option for these old machines.

It's been through a fire at some point, as the paint is pretty much mud color, and I can see scorch marks on the side panels. I got 6 good 9.00x20 tires which would be over $1000 right there. Anyway, I'm hoping this is a 226 with 45HP, but if not I won't be upset. View attachment 99523View attachment 99524

That's one ridiculous desire I have- is to have a D grader. There's one for sale nearby- pretty decent looking too, but nearly $10,000!

 

[4wdtom]

I'm cornering the market in model D graders. This is my third one. They are just too cheap to pass up. This one was 1200 and maybe I overpaid but the engine runs. And, I got a 226 set of liners and pistons with rings for my other D grader. This one also has the hub weights, and the power steering which is a nice option for these old machines.

It's been through a fire at some point, as the paint is pretty much mud color, and I can see scorch marks on the side panels. I got 6 good 9.00x20 tires which would be over $1000 right there. Anyway, I'm hoping this is a 226 with 45HP, but if not I won't be upset. View attachment 99523View attachment 99524

And the G at the end means it has higher compression for gasoline than the tractor fuel engine.

 

[JOCCO]

Oh crap I thought you guys were talking about WC speed patrol! Well it's been a long day.

 

[old]

Oh crap I thought you guys were talking about WC speed patrol! Well it's been a long day.

Model D looks like the common road grader but the W Speed Patrol looks a lot different. By the way the WC and WD engines are the same but the transmission and rear end are not the same

 

[docmirror]

That's one ridiculous desire I have- is to have a D grader. There's one for sale nearby- pretty decent looking too, but nearly $10,000!

I'll sell one, but I don't deliver. It must be a nice machine at that price. Usually a running D is around $4k.

 

[docmirror]

And the G at the end means it has higher compression for gasoline than the tractor fuel engine.

So, it could be higher than 45HP rating?

 

[docmirror]

One issue I have now, the starter has a hard time engaging with the starter ring. The motor runs, but the gears don't mesh and it grinds as if it's trying to engage but hasn't meshed. Is this common? Is it typically the starter gear not throwing far enough, or the ring gear being damaged? or some other malady?

 

[docmirror]

I did a little more research on the engines for the model D. It looks like the gas is 50HP and the Buda diesel is 46HP but higher torque as usual. I'm sure 50HP is going to be plenty for my use.

 

[Aaron SEIA]

One issue I have now, the starter has a hard time engaging with the starter ring. The motor runs, but the gears don't mesh and it grinds as if it's trying to engage but hasn't meshed. Is this common? Is it typically the starter gear not throwing far enough, or the ring gear being damaged? or some other malady?

Probably a bad ring gear. When the starter is on one of those grind but won't connect spots, pull it and look at the teeth on the ring gear. Bet they are shot.
AaronSEIA

 

[4wdtom]

So, it could be higher than 45HP rating?

No, the 45s were 43.21 hp on gas, the tractor fuel would have been somewhat less at 33. These figures are from the AC Data Book by Terry Dean.
It isn't known if the 45 refers to 45 hp or th3 4.5in. stroke.

 

[4wdtom]

I did a little more research on the engines for the model D. It looks like the gas is 50HP and the Buda diesel is 46HP but higher torque as usual. I'm sure 50HP is going to be plenty for my use.

That's interesting. The 45s hp was at 1400 rpm. Did they up the rpm a bit for the 50 hp rating. The D-17 is 48.64 at 1650 rpm.

 

[4wdtom]

That's interesting. The 45s hp was at 1400 rpm. Did they up the rpm a bit for the 50 hp rating. The D-17 is 48.64 at 1650 rpm.

I should have also mentioned that at this point you can't be exactly sure what engine you have as it may have been changed out over the years. If the engine in the D wore out a used 45 engine would likely have been easier to find than the D. However they could have up rated the 45 engine for the D so who knows?

 

[4wdtom]

No, the 45s were 43.21 hp on gas, the tractor fuel would have been somewhat less at 33. These figures are from the AC Data Book by Terry Dean.
It isn't known if the 45 refers to 45 hp or th3 4.5in. stroke.

Compression ratios for the 45s were 6.45 gas, 4.75 distillate, and 7.2 for LPG. For D-17 gas 7.5, LPG 8.25. And while I am at it the WD was 5.5 gas, and 4.5 Distillate, rpm 1400. WC same compression ratios as WD but 1300 rpm.

 

[docmirror]

Probably a bad ring gear. When the starter is on one of those grind but won't connect spots, pull it and look at the teeth on the ring gear. Bet they are shot.
AaronSEIA

I think so. It kept zinging but no catch on the ring. So, I moved the crank by hand about 20 deg and then on the second try it meshed, and cranked up. I got the engine running, and it seems to run pretty good. I see that the starter ring is offered for sale here so it's a replaceable item. I'll get a new one.

This starter has the mechanical bendix with the pull rod to start. It may also have an issue not pushing the start gear forward enough, so a combo failure mode.

 

[DrAllis]

A legit gasoline burning WD-45 engine (W-226) was 50 FLYWHEEL HP @ 1400 RPM rated speed, which translates into 43 PTO HP. A legit D-17 gas engine (G-226) engine was 63 FLYWHEEL HP @ 1650 RPM rated speed, which produces 53 PTO HP when the tractor has factory power steering. The WD-45 engine high idle is 1700 RPM and the D-17 is 2,000 RPM.

 

[docmirror]

Here's the coding off my other grader. I think both of the engines are orig to their machine. They have very similar patina, and it all looks like it's never been apart. I could be wrong, but the change of engine must have come with a new paint job as well. Which seems unlikely.

This one has a WD prefix, and GA suffix. Assuming again this is a standard WD engine, with the high compression pistons for a bit more power.

 

[docmirror]

A legit gasoline burning WD-45 engine (W-226) was 50 FLYWHEEL HP @ 1400 RPM rated speed, which translates into 43 PTO HP. A legit D-17 gas engine (G-226) engine was 63 FLYWHEEL HP @ 1650 RPM rated speed, which produces 53 PTO HP when the tractor has factory power steering. The WD-45 engine high idle is 1700 RPM and the D-17 is 2,000 RPM.

I looked at the marketing materials from late 50s for the model D, and they touted "50HP to move the material faster". There was no breakdown of how they got there. Since there's no PTO, it's all shaft HP at the flywheel.

I have a D-17 ser I engine setup for Propane, and I don't need it but also have a Gleaner 226 engine which is supposed to be about 60HP. I've swapped the governor bits from a WD over to the Gleaner engine so I have throttle. In retrospect, I should have just left it with the fixed RPM from the Gleaner.

Eventually, I might get all three going, but the one that's been in a fire is rough looking, and it's a low option grader. No scarifier, leaning wheels, power steering, or hyd circle control. It also has the small/narrow wheels for the 7.50x20 tractor tires. The fire grader also has all the wheels off, and the lugs are in rough shape. Would take about 10-12 hours to sort out all the lug nuts and bolts.