Onan P220 in a 420?
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Thread: Onan P220 in a 420?

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    Onan P220 in a 420?

    Good Morning!
    I bought and am rebuilding an Onan P220 out of a 420 tractor. The engine ID tag is not readable so I am looking for what the engine spec #'s would be for this engine. Pics of engine ID plates would be most welcome. I plan to put the engine in a 316 I have. Thanks!
    Last edited by KennyP; 11-02-2018 at 09:29 AM.

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    Call boomer at the number on his site.

    Boomers Used Onan Engine Parts

    There are a couple different specs, and boomer knows details that might include the valve installers bathroom schedule. Lol. He’ll guide you through identifying exactly what spec and serial number range you have. Even with the numbers you might still have a short block replacement with different parts but the old tin. He has prices competitive with or better then Cummins/onan dealers which are what Deere marks up for reboxing and storing. If you look on JD parts just delete the HE to translate a JD part number into the onan one.

    Boomers Used Onan Engine Parts
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    Quote Originally Posted by rydplrs View Post
    Call boomer at the number on his site.

    Boomers Used Onan Engine Parts

    There are a couple different specs, and boomer knows details that might include the valve installers bathroom schedule. Lol. He’ll guide you through identifying exactly what spec and serial number range you have. Even with the numbers you might still have a short block replacement with different parts but the old tin. He has prices competitive with or better then Cummins/onan dealers which are what Deere marks up for reboxing and storing. If you look on JD parts just delete the HE to translate a JD part number into the onan one.

    Boomers Used Onan Engine Parts
    That's where I got the parts to rebuild it! He never offered a spec # and that is why I am here asking.

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    Guess I'll wing it! Thanks for all the help!
    VietNam Vet, 68-69
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    Engine serial number will help, it is on the front top (crankshaft/PTO) by the muffler bracket. The spec will be easy to figure out with that tractor serial number to to get the year range. I've got a 1992 420.

    Here is my spec: P220G-I/11081C
    Last edited by bloodrunsgreen; 12-26-2018 at 06:41 PM.
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    Quote Originally Posted by bloodrunsgreen View Post
    Engine serial number will help, it is on the front top (crankshaft/PTO) by the muffler bracket. The spec will be easy to figure out with that tractor serial number to to get the year range. I've got a 1992 420.

    Here is my spec: P220G-I/11081C
    Thank you! I bought this engine to rebuild. All I know is it came from a 420. The decal with the #'s had been cleaned with something that wiped it clean, so I have nothing to work with. I have since gotten it running and have put it in a 316. Those #'s should be close for what I need. Have a great New Year!
    VietNam Vet, 68-69
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    '86 316 Tractor (361703)
    '89 265 Tractor (597403)
    F725 Front Mow (032048)

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    The main changes in the production over the years were:

    Breather style/location
    Screen on the flywheel
    Plastic shield in the carb throat
    Cap cover on the flywheel/drive shaft

    That's about all I've come across, but the experts are boomer boomersonanparts.com or the other guy over at onanparts.com
    KennyP likes this.

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