M14 into K321 block

[Mudrig150 331]

So, I've been thinking about my Magnum 14. I think that I might just take it and throw it in my 140, but that's a problem because the M14 is a wide base cut deck, with the cutouts on the block ears. I have a K321AQS block, it's wide base flat deck block without the cutouts. It's got some issues with the bore and the piston is tight, either from running without oil or the bore being incorrect, but it does have no block damage and no balance gears. Right now, the M14 is in my snapper frame, but even if I convert the M14 to a flat deck it's still got the mounting ears, so I can still run it with both the narrow and wide base deep pans. 

The Magnum 14 has spark, but it sounds a bit unhealthy and kind of wheezy, and the bottom of the dipstick is absolutely puking oil. 

The main benefits are that I'd have more torque (16.5 ft/lbs with the K241 vs 23.5 ft/lbs with the M14), I'd be able to use the correct deep oil pan (the K241 has a shallow pan and a cut dipper, so it doesn't fit right), I'd have more amperage from the stator to do stuff with, the simplicity of the engine, I'd have a plastic grass screen, which is easily cut to be removed easily around the driveshaft, and the tractor would be even more unique.

The biggest issue is that the flywheel needs redrilled for the driveshaft adapter, I have very little funds and the obvious wiring changes that need to happen. I do, however, have a lot of help and a large amount of stubbornness.

 

Too long, didn't read: I'm swapping the internals from an M14 into a K321 block.

 

Unrelated, what are the dimensions for the bottom of the wide base deep oil pan? I need to make a mounting plate for the snapper...

Edited March 2, 2020 by Mudrig150

[ZXT 2,401]

If I understand you correctly, you want to pull the K241 from your Deere, simply because it won't start, and piece together another engine out of one that you think is worn out (based on the fact that it is puking oil out the dipstick tube) and another that has a damaged bore. 

 

While it's apart, it would be an excellent idea to at least the hone the cylinder and purchase new rings. You'll obviously also need a gasket set. Then, once you'e done with that, you still have to have the flywheel machined.

 

All of these things add up quick, which is an issue for you. Once it's together, you might still not have a very good engine, since you described them both as being problematic to begin with. 

 

My advice: Get the K241 running that you have. Even if you have to throw a little money at it, it will still come in less than the frankenstein engine. Get the M14 to run on your other tractor, even if it is worn out. You should then have two working tractors for little to no money.

[Mudrig150 331]

1 hour ago, ZXT said:

You want to pull the K241 from your Deere, simply because it won't start...

 

...Piece together another engine out of one that you think is worn out (based on the fact that it is puking oil out the dipstick tube) and another that has a damaged bore. 

 

While it's apart, it would be an excellent idea to at least the hone the cylinder and purchase new rings. You'll obviously also need a gasket set. Then, once you'e done with that, you still have to have the flywheel machined.

 

All of these things add up quick, which is an issue for you. Once it's together, you might still not have a very good engine, since you described them both as being problematic to begin with. 

 

My advice: Get the K241 running that you have. Even if you have to throw a little money at it, it will still come in less than the frankenstein engine. Get the M14 to run on your other tractor, even if it is worn out. You should then have two working tractors for little to no money.

The K241 isn't coming out anytime soon, it's staying in Larry for the summer. It's getting tired from 30 years of full throttle, 3rd gear mowing with only 2 oil changes, and I really don't want to run a worn engine more than one summer. When my birthday hits in august, I'm getting cash to rebuild the M14, which'll be going in Larry's frame to replace the K241, which is most likely going to my brother to be bored to a K301 and put in his cub 1250.

The M14 is only puking out oil because the block is stress cracked pretty bad, and the cylinder walls are scored from it swallowing carbon around the leaking intake valve. The K321 most likely has the tight piston because the bore sizing being all over the charts, and it has an unmarked cheap piston in it. It's gonna need bored at least .020 over, if it really is .010 over now, but I highly doubt that it actually is.

The block is getting bored out and the parts are all getting thoroughly inspected. I'll get a micrometer and an endplay guage, and set everything right. I have 99% of a gasket set, which was meant for the K321.

I'm planning on getting the driveshaft adapter, which fits tight over the center flywheel bolt, and a bushing to keep the bit straight, and just drilling the holes 45 degrees offset from the originals.  

The K321 is only problematic because the "engine rebuilders" were incredibly incompetent and basically built up the engine to fail, with literally every part they touched put in wrong. The block survived the inevitable rod explosion , and so did the camshaft with only a scuff on the fuel pump lobe, but not really anything else. I have checked the whole engine over and it seems to have only major damage on the oil pan. 

I will get the K241 running. It'll probably go to my brother and get bored out to a K301, as stated before.

Edited March 2, 2020 by Mudrig150

[ZXT 2,401]

Why don't you just use the K241 flywheel? It's the same as a K321.

[The Tuul Crib 7,339]

21 minutes ago, ZXT said:

Why don't you just use the K241 flywheel? It's the same as a K321.

[Mudrig150 331]

31 minutes ago, ZXT said:

Why don't you just use the K241 flywheel? It's the same as a K321.

Because the flywheel won't work with the Magneto. I'm planning on using the entire engine setup, mainly for the cool factor.

[ZXT 2,401]

8 hours ago, Mudrig150 said:

Because the flywheel won't work with the Magneto. I'm planning on using the entire engine setup, mainly for the cool factor.

You'll need to use the Magnum bearing plate as well then. 

[953 nut 60,019]

                      Do a proper rebuild on the 241 and give the Magnum hand-grenade to your brother.

[Mudrig150 331]

8 hours ago, ZXT said:

You'll need to use the Magnum bearing plate as well then. 

I was planning on using it anyway. The K321 bearing plate sat in the rain and ended up with bad corrosion and the bearing locked up.

[Mudrig150 331]

1 hour ago, 953 nut said:

                      Do a proper rebuild on the 241 and give the Magnum hand-grenade to your brother.

He only wants the K241. He's got a Cub 1250 and he wants to keep it "original". Besides, it wouldn't fit in the frame without doing the internals swap.

Edited March 3, 2020 by Mudrig150