D722 Engine identification important? pics

[bcomstock15]

I'm looking to replace the engine in my GF1800 (small outfront mower) it uses a D722 engine. I found a used engine that i would like to put in it, but it was obviously used for something else other than a tractor before. I've heard that not all engines of the same model are alike, and that it's very important to make sure they have the same OEM spec's.. this is a good deal on the engine, so i'm wondering what types of problems i might find, if any? is this as important as they say? the ad specifies that it has been "completely re-built" just wondering what i should be weary of, it's a long drive to pick it up.

attached pics of engine, what problems, if any, can you identify? i see a melted oil cap, do you think it was in a fire or something?

Thank You for your help.

 

[birddogger]

Looking for an opinion? Yeah it has seen a fire. No, it doesn't look rebuilt, at least not in a recent life. It has seen too much weather to consider much more than a complete core. It will need a change of flywheel. At least it has a new starter. They put a rag to keep rain out of the intake but not the exhaust ports; you can imagine what a little rain down an open valve might do to a cylinder.

 

[bcomstock15]

Thanks for your help

What do you mean by 'its seen too much weather to consider much more than a complete core'? i don't know much about engines.

Do you think what i heard that not all engines of the same model are alike, and that it's very important to make sure they have the same OEM spec's is true/important. He wants $1000 for this engine. I have a current one with 200 hrs and a broken head (so i could take parts from it for this one). What would you do? ive been looking for a decent deal on one within driving distance for a while...

 

[bcomstock15]

Heres what the seller has to say about the engine:

The motor was used in a Timberjack skidder to run a hydraulic pump that ran a 60 foot altec lift. It is used by Asplundh tree company to trim trees. I am the foreman on the machine. The motor was getting tired ie: losing power and smoking. Asplundh decide to replace both motors on the machine with new motors. They gave my the old motor and I gave it to a cousin to use in a project he has where he needed to run a hyd. pump. He had the motor rebuilt at almost $2000. He caught the machine on fire and some of the Kubota engine got burned. I took the motor back to the shop that rebuilt it and had them pull the head and check out the motor. After replacing a couple hoses that got melted they put the motor on a stand and fired it up. It runs great and other then a melted cap it looks good. The rest of the project did not survive so good so we want scrap the project and sell what we can.

 

[kuboman]

You say your engine has a broken head. Meaning what? For less money you can replace the head on yours and not have to modify anything.

 

[RDR]

Also, what caused the head to crack. Here is a link to a head for 399.99 on ebay. http://www.ebay.com/itm/Kubota-D722...497?pt=LH_DefaultDomain_0&hash=item33718fad39

 

[birddogger]

Well looking at the whole situation. You could add up the $400 for the new head and the $500 worth of new starter on that engine and you are almost at the asking price of $1000. Besides changing over the flywheel from your old unit and maybe a new valve cover gasket (cooked in the fire). That engine could be worth a go.

I'd get in and minimally connected; start it up and not rev above idle and watch for smoke,or leaks and listen for clanking or rattling. Let it idle for a while before putting it under load and putting around a bit to assess its' power, servicablility.