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Thread: wtb - jeep 4.0. anyone have one laying around?

  1. #1
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    wtb - jeep 4.0. anyone have one laying around?

    Pretty sure the motor in my 99 is cooked. I know joe has one but it might be locked up. anyone else have one?
    taking unsafe rigs to a whole other level

  2. #2
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    What happened to your 4.0? I’ve been looking for a cheap rebuild candidate for mine.
    98 Dodge Ram 1500
    2003 Jeep WJ 4” lift, 32” BFG Mud Terrains
    89 Suzuki Sidekick (fuel cell, long tube header, sawzaw lift kit, 31’s, lots of rust and ITS FOR SALE!)
    2017 Suzuki DRZ400S
    1973 Bultaco Matador SD250

  3. #3
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    Quote Originally Posted by Keith View Post
    What happened to your 4.0? I’ve been looking for a cheap rebuild candidate for mine.
    i need to confirm it's done... but it's got a pretty good... kinda knock? lol. it's not bottom end. might be a lifter or broken push rod buuuuuut i'm never that lucky.
    taking unsafe rigs to a whole other level

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    Quote Originally Posted by 2002wranglerX View Post
    i need to confirm it's done... but it's got a pretty good... kinda knock? lol. it's not bottom end. might be a lifter or broken push rod buuuuuut i'm never that lucky.
    Run some seafoam in the oil and change it, it helped my sticky lifter issue.
    98 Dodge Ram 1500
    2003 Jeep WJ 4” lift, 32” BFG Mud Terrains
    89 Suzuki Sidekick (fuel cell, long tube header, sawzaw lift kit, 31’s, lots of rust and ITS FOR SALE!)
    2017 Suzuki DRZ400S
    1973 Bultaco Matador SD250

  5. #5
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    Quote Originally Posted by Keith View Post
    Run some seafoam in the oil and change it, it helped my sticky lifter issue.
    I pulled the valve cover and i suspect this motor's done. i'm picking up a 99 for 200 bucks tomorrow. so if you want this one, it has your name one it. come get it and the manifolds you wanted lol.
    taking unsafe rigs to a whole other level

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    Quote Originally Posted by 2002wranglerX View Post
    I pulled the valve cover and i suspect this motor's done. i'm picking up a 99 for 200 bucks tomorrow. so if you want this one, it has your name one it. come get it and the manifolds you wanted lol.
    What did you see when you popped the valve cover off? I’m interested, where you located?
    98 Dodge Ram 1500
    2003 Jeep WJ 4” lift, 32” BFG Mud Terrains
    89 Suzuki Sidekick (fuel cell, long tube header, sawzaw lift kit, 31’s, lots of rust and ITS FOR SALE!)
    2017 Suzuki DRZ400S
    1973 Bultaco Matador SD250

  7. #7
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    Quote Originally Posted by Keith View Post
    What did you see when you popped the valve cover off? I’m interested, where you located?
    Allison park

    nothing. oil looks clean. no sludge, tight push rods and i can't move the rockers so i think the lifters are good. my guess is broken piston skirt.
    taking unsafe rigs to a whole other level

  8. #8
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    Sounds like it could be a good rebuild candidate (depends on what damage the piston did). Let me know when your ready to get rid of it and if you need a hand with the swap I would gladly help you out (will need some notice though your a little bit of a drive from Latrobe).
    98 Dodge Ram 1500
    2003 Jeep WJ 4” lift, 32” BFG Mud Terrains
    89 Suzuki Sidekick (fuel cell, long tube header, sawzaw lift kit, 31’s, lots of rust and ITS FOR SALE!)
    2017 Suzuki DRZ400S
    1973 Bultaco Matador SD250

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