What engine do I have 450 straight loader

[Georgia088]

I had a ton of help a few weeks ago with my 450 loader and determined from my serial number it is a 1968 450 straight. Now I am trying to determine which engine I have. I will post pictures of the serial and the casting on the block and a tag beside the castings.

I have read it has the 4.202 but want to verify. I need to purchase some rod cap bearings and want to get the correct ones. Are the 4.219 and 4.202 rod cap bearings interchangeable?

Thanks for any help!

 

[Jim.ME]

On the engine tag:
5 = 4 cylinder
3 = diesel
T = Dubuque (using factory))
The "E" likely indicates it was used in a crawler loader.
The six digits are the actual serial number of that engine (There is no publicly available list that relates engine number to year, to my knowledge).
The T at the end means it was built in the Dubuque Factory

This is the format of a 4 cylinder 202 cid diesel engine serial number, I will say you have a 202. The correct printing of the service manual (SM2064) for your 450 should have this info in it. Unfortunately, the later printings may have the engine serial number formats for the next generation engines (219 cid).

I gave you a link to the online parts book for your 450 in one of your other threads. You can open it and click on the box that says "New Parts Search". That will take you to the search page where you can enter 450B (which uses a 219 engine) and get the 450B parts book. you can then compare parts between the two engines (or any other parts, of those two, you want.

 

[buickanddeere]

All the 450’s that can be located in a hurry . 202,219 and 276

 

[Jim.ME]

It should be mentioned that to get the correct bearings the crankshaft journals should be mic'd (measured) to see if the crank has been turned somewhere along the way in its life, as well as condition (roundness and taper) of the journals.

 

[Georgia088]

Ok. Thanks. I don’t have a good way of measuring, but I did check the bearings that were in it and they were labeled with “std” on them. So, I’m pretty confident they are standard size and the crank hasen’t been resized.

Thanks!

 

[steve_in_mo]

Ok. Thanks. I don’t have a good way of measuring, but I did check the bearings that were in it and they were labeled with “std” on them. So, I’m pretty confident they are standard size and the crank hasen’t been resized.

Thanks!

Look up Plastiguage.

 

[buickanddeere]

Ok. Thanks. I don’t have a good way of measuring, but I did check the bearings that were in it and they were labeled with “std” on them. So, I’m pretty confident they are standard size and the crank hasen’t been resized.

Thanks!

There is trying to do things on a budget but there is such a thing as not touching a project that is beyond the available resources . Could end up with less than what you started with .
A 239 out of a utility tractor as a swap works well . As long as the liners are not rotten .

 

[Georgia088]

There is trying to do things on a budget but there is such a thing as not touching a project that is beyond the available resources . Could end up with less than what you started with .
A 239 out of a utility tractor as a swap works well . As long as the liners are not rotten .

So, my engine is shot? Toss it aside and replace with another engine? $60 worth of bearings is a gamble I'm willing to take. Long shot for sure, but I have my fingers and toes crossed....

 

[buickanddeere]

So, my engine is shot? Toss it aside and replace with another engine? $60 worth of bearings is a gamble I'm willing to take. Long shot for sure, but I have my fingers and toes crossed....

Any chance the rod caps have been mixed side to side or rod to rod ?
Rod caps can not be swapped around in
any position on any direction or way .

 

[Jim.ME]

I had a ton of help a few weeks ago with my 450 loader and determined from my serial number it is a 1968 450 straight. Now I am trying to determine which engine I have. I will post pictures of the serial and the casting on the block and a tag beside the castings.

I have read it has the 4.202 but want to verify. I need to purchase some rod cap bearings and want to get the correct ones. Are the 4.219 and 4.202 rod cap bearings interchangeable?

Thanks for any help!

Based on the engine serial number you posted you have a 4.202 diesel engine.

To get the best answers to your questions you need to clarify whether you are looking for rod caps or rod bearings (inserts). I believe you are looking for the bearing inserts; it looks like some are reading what you posted as you are looking for the rod caps that hold the bearing inserts. If you are asking about just the bearing inserts call them rod bearings or inserts. If you are looking for the caps that bolt on the ends of the cylinder rods call them cylinder rod caps.

If you are in fact looking for cylinder rod caps it will be best to get cylinder rods complete with the caps that came with them and have them checked/reconditioned by a machine shop. If you replace just a rod cap it definitely needs to be reconditioned by a shop, they are not mix and match parts.

Did you use the parts catalogs to cross check the crank bearings for the 450 (4. 202 engine) and the 450B (4.219 engine) as I suggested?

 

[Georgia088]

Based on the engine serial number you posted you have a 4.202 diesel engine.

To get the best answers to your questions you need to clarify whether you are looking for rod caps or rod bearings (inserts). I believe you are looking for the bearing inserts; it looks like some are reading what you posted as you are looking for the rod caps that hold the bearing inserts. If you are asking about just the bearing inserts call them rod bearings or inserts. If you are looking for the caps that bolt on the ends of the cylinder rods call them cylinder rod caps.

If you are in fact looking for cylinder rod caps it will be best to get cylinder rods complete with the caps that came with them and have them checked/reconditioned by a machine shop. If you replace just a rod cap it definitely needs to be reconditioned by a shop, they are not mix and match parts.

Did you use the parts catalogs to cross check the crank bearings for the 450 (4. 202 engine) and the 450B (4.219 engine) as I suggested?

Yes, I am talking about the bearings or inserts. I did check and the two engines appear to use the same bearings/inserts. I ordered from a local John Deere dealership. I gave them all the information I have to hopefully get the correct ones, but I am not the most confident with their information. Although, I do believe based on my research and y'alls information the ones they have ordered will be correct.

Thanks!