Looking for a 4.0....

Discussion in '4.0 Engine' started by RangerMan88, Dec 27, 2011.

  1. RangerMan88

    RangerMan88 RangA RolliN

    Well, I have oil getting to one of my spark plugs, I was hoping it was just the valve seals.. It was not, so Im led to believe it is a busted ring? The one that is getting oil previously had a plug that the porcelyn cracked on, maybe that caused the problem, so basically Im gunna start looking for a used 4.0 motor...
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  3. Demon

    Demon I take no prisoners!

    hell ya
  4. OP

    RangerMan88 RangA RolliN

    found one with 65k for 1350
  5. Demon

    Demon I take no prisoners!

  6. Hurley

    Hurley Superultramegalurker

  7. OP

    RangerMan88 RangA RolliN

    I wish i could put the 4.6 thats in the new F150s
  8. OP

    RangerMan88 RangA RolliN

    What do you guys think, should I just rebuild my engine knowing how its been maintained and all, or Go for a used one with less miles, and put that in?

    It will end up costing right around the same amount..
  9. Brinker88

    Brinker88 Black sheep o' the family

    You might have a cracked valve bro. I would tear into the motor first. The lower ends of these trucks have been known for their brutal strength. I would assume it has something to do with your heads.
  10. klinger86

    klinger86 Moderator

    this and if you tear in to it it's basically gonna be a fresh motor if you replace everything....
  11. Brinker88

    Brinker88 Black sheep o' the family

    Yea as long as your blocks or heads arent cracked, its kinda pointless to buy a new motor. You cant drive it anyways.

    Just have a machine shop hone the cyl. walls and buy new pistons, have your crank turned, heads magnafluxed and your valves angled, slap it back together and you're good to go!
  12. OP

    RangerMan88 RangA RolliN

    Thanks for all the Input Guys!

    As of now I ag it, the mechanic told me I could until it just craps out.. But I feel better if I would get it replaced before an upcoming meet a few hundred miles away. Which is in April and I would be doing the week leading up to it..Our belief is that it is a ring in the bottom of the cylinder? that is cracked, so it will have tobe fixed, I think Im just gunna have mine fixed..
  13. nicksranger01

    nicksranger01 New Member

    too bad you ain't closer to iowa, i just found a 03 fx4 with 60,000 miles in the junkyard, with a good motor, may not have a transfer case or trans here soon if i can afford to pick them up, but a running motor
  14. illinoisranger

    illinoisranger army strong

    i just bought a used 4.0 with 86k on it for 400 bucks from my bro in law (owns a junk yard in town) to replace my 3.0 with 97k is there any problems i can expect or wil it fit right in any help would be very appreciated
  15. Freemans 00

    Freemans 00 Active Member

    I didnt read any of the posts before, but buy the other engine and keep yours and work on it little by little and re sell it or keep it.

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