(800) 853-2651
SHOP NOW

JD 318 with Onan engine P218

C

Cas

Well-known Member
I looked at an Onan P218 engine that was just overhauled. The only problem was that the John Deere dealer mechanic forgot to put oil in it.
Owner said it ran great till it stopped after a couple minutes The crank, rods, pistions, and rings look like new. The only thing I noticed was the cylinder walls were smooth. Crosshatch was gone. Measured everything and no problem. Crank could use just a litt polishing.
Wonder if you guys think would take a chance on it and a ball park offer for it.
The only thing that looked bad was the main bearing on the flywheel side.
 
So, the engine is dismantled? Did you take it apart or was it already opened up?

My fear would be missing parts, unless you took it apart and know it's all there.

The motor could probably be made to run again. Is the upper main bearing replaceable? I see there are several blocks on Ebay so it is doable to put it back together.

Without seeing the rest of the tractor hard to say what it's worth. Not running, I would offer very little.
 
"measured everything?" I guess you measured with a micrometer.
What stopped it?
Did it seize up?
Did the valve seats fail? (They have a tendancy to work loose in those engines anyway.)
What about the main bearings?
How about the governor? What does the ball separator look like? (They tend to melt on Kawasaiks if they have been overheated. I don"t know about Onans.)
At best, being run without oil, some component has been overheated.
If I wanted to chance it, I would definately replace the main bearings and the rods.
 
Isn't that like your first heart attach? I fix a lot of stuff and you could be very lucky. Give it a shot.I like the rods and bearings. Also synthetic blend 5 w20 oil.
 
Main bearings are replacable. I am an Onan nut and have a lot of parts around. I watch ebay and if a engine part is cheap I try to buy it.
I am just buying the engine.
 
I would replace the mains. The main bearing on the flywheel side splayed(sp) and I think locked up the engine. There are no plastic parts in a P218. Valve seats are good.
There was a little problem with valve seats coming loose. I have put in oversize seats in. Chill them in dry ice first. Have not had one come loose.
Have quite a few engines out there with over 2500 hours on them. Just never have seen an engine overhauled and started with no oil look so good.
 
My question would be. How did it start in the first place. The 218 has a low oil pressure shut down switch. Unless the switch is bad. No oil no oil pressure.
 
That is a good question. I did not think of that. It was one of last 218s so unless it was bypassed I am getting a less than honest story. Thinking about it, I do not think a few minutes running would tear off the cylinder wall cross hatch.
 
I think you are getting a BS story.I have been working on engines for 54 years. Even the ones that were worn out. Had a little bit of marks left.
 
jerry c
the onan 112-0186 rod part# had AT LEAST
two different cast#.
most likely 112-0164 for you.
i do stock all of the older pistons. ( used )
i also stock all of the other parts that you may need to reassemble your engine.
e/mail [email protected]
or call 651 437 2826
thank you. boomer ( the used onan engine parts guy )
 
You must log in or register to reply here.

Similar threads

J
John Deere 316 Onan engine won't start
Replies
3
Views
407
wore out
wore out
A
What was the problem with the JD 9400 combine engine?
Replies
6
Views
456
coonie minnie
C
A
JD 318 with JD #44 loader-- loader won't lift
Replies
2
Views
537
Arvin Haslem
A
W
JD 870 starting problem
Replies
9
Views
374
warhawk07
W
J
IH Super C engine help
Replies
15
Views
604
jaburford
J
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top