modernjeeper
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  1. #1
    Jeep Newb
    Join Date
    Oct 2017
    Location
    Monroe NC
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    6
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    Eng Number Location

    hello,

    I have a 1990 YJ I picked up cheap because the engine was leaking oil. Looking at pics of other YJ's it doesn't appear to have the same engine set up. It is a 4cyl but I think it might have come from a Cherokee or something. Where can I find the engine block number or any other way to determine exactly what engine it is?

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  3. #2
    Jeep Owner cracked's Avatar
    Join Date
    Sep 2017
    Posts
    13
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    I have a 2.5L out of an '88 sitting on a stand out in the garage, if I get the chance today I'll check it for the # location, but in the meantime post a pic of your engine bay, and a little more detail on what/why you think it might be different, and I'll compare to my '88 which has the complete drivetrain/chassis from a '89


    ETA; according to my Chilton manual the engine # is located on a pad located just below the head between the #3 and 4 cylinders

    should read as the first digit is the year, so yours should be a 0 for '90
    second and third digits are the month (01-12)
    next should be an "E" for the 2.5L in a '90

    hope that helps
    Last edited by cracked; 12-20-2017 at 11:13 AM.
    Orange '88 YJ SE 2.5L/ax5/231//D30/D35
    Black '00 TJ Sport 4.0L/32rh/231/D30/D35

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