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Rebuilt head no compression

Discussion in 'The Hokey Ass Message Board' started by mcmopar, Mar 12, 2014.

  1. prpmmp
    Joined: Dec 12, 2011
    Posts: 1,132

    prpmmp
    Member

    Thats exactly what my son wants to do!! Pete
     
  2. Don's Hot Rods
    Joined: Oct 7, 2005
    Posts: 8,319

    Don's Hot Rods
    Member
    from florida

    I swapped a 5.0 Mustang into my Jeep Commanche. Made it a fun little parts hauler. :D A sbc would have been easier, but I had the Ford engine and trans.

    Don
     
  3. Get everything from the donor to switch it at the u joints.
    The radiator is the biggest *** ache.
     
  4. prpmmp
    Joined: Dec 12, 2011
    Posts: 1,132

    prpmmp
    Member

    Neck deep in his Mothers Belair (Great Grandmother bought new in 1956 and drove till 1988 and was 88 years old) on rotisserie and no room to breath! Pete
     
  5. BOBCRMAN
    Joined: Nov 10, 2005
    Posts: 846

    BOBCRMAN
    Member
    from Holly

    Because of a problem on this site. I have been watching this post and couldn't post..

    Jeeps 4.0 engine has more than six versions of cylinder heads that I can think of off the top of my head.. Many not interchangeable between models. Different heads/valve sizes/stem length/diameter/springs and other valve train parts.

    You cannot just take a 4.0 head and bolt it on another 4.0.Even same years...Disaster will ensue..

    Modern VIN codes are on a vehicle for this reason. If you want odd problems, swap non matching VIN parts.. The factories do changes to these things that the common guy doesn't recognize. Vin code, usually the eighth digit, for engine must match VIN code for replacement head.. Not just casting numbers!!

    The bone yard may not be the fault..:(
     
  6. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,516

    gimpyshotrods
    ALLIANCE MEMBER

    No combination of factory 258 or 242 heads, blocks, cams, valves, or pistons, of any generation, produces an interference engine.

    I have been building and racing the Jeep-6 for three decades. I am not sure where you heard this information.
     
  7. prpmmp
    Joined: Dec 12, 2011
    Posts: 1,132

    prpmmp
    Member

    In your opinion,the head that clearwater(new head with new casting) sells for the 4.0, Is that the way to go? Thanks Pete
     
  8. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,516

    gimpyshotrods
    ALLIANCE MEMBER

    It is a good price, depending on shipping to your location.

    There are year-to-year variances in port size, and a few dowel pins, for location to take into account for. 1996 and up have a different valve cover.

    The early 0331 casting ('99-up) were a little thin, and prone to cracking. This was corrected by 2000, as far as I know, but I stick with 0630 heads, just the same.
     
  9. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,516

    gimpyshotrods
    ALLIANCE MEMBER

    Give how long the 0331 casting has been in service, entropy should have long weeded out the thin ones.
     
  10. prpmmp
    Joined: Dec 12, 2011
    Posts: 1,132

    prpmmp
    Member

    Thanks Pete
     
  11. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,516

    gimpyshotrods
    ALLIANCE MEMBER

    Who's Pete?
     
  12. prpmmp
    Joined: Dec 12, 2011
    Posts: 1,132

    prpmmp
    Member

    Thanks for the information!!! Pete(me)
     
  13. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,516

    gimpyshotrods
    ALLIANCE MEMBER

    Pete(me), is that British? :D
     
  14. classic gary
    Joined: Sep 24, 2009
    Posts: 506

    classic gary
    Member

    again
     
  15. stimpy
    Joined: Apr 16, 2006
    Posts: 3,546

    stimpy

    sounds like the P.O. of the head did a brick on the pedal to kill it move and floated the valves . Dumb*** kids around here do that to there cars before sending them to the yards . seen several good engines destroyed beyond saving to amuse themselves .and I would have bought the hulk for more than the yard would give them .
     

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