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camshaft tensioner

Discussion in 'Early CJ5 and CJ6 Tech' started by skeely, Jun 3, 2013.

  1. skeely

    skeely New Member

    in a bit of a panic as i am getting ready to button up the 225 after a new camshaft install when i come across a thread showing a camshaft tensioner. when i pulled my timing chain cover off there was no tensioner, but could be the work of p.o. then i read that some 225's did'nt have one. need help and clarification from those more learned than this humble back yard wrench turner.
     
    skeely, Jun 3, 2013
    #1
  2. piffey263

    piffey263 Active Member

    just took this picture for ya, its off my 66 225

    [​IMG]

    so I don't see a tensioner on mine, just the timing chain tensioners.

    Hope this helps
     
    piffey263, Jun 3, 2013
    #2
  3. grannyscj

    grannyscj Headed to the Yukon

    This is how it should look. Tensioner on left.
    [​IMG]

    The two holes on the left just above the bearing block (offset with one slightly larger) is where the tensioner (called a damper in the FSM) mounts. Big hole is pivot bolt, small hole is the spring anchor. The holes on the right are where the other damper (static not spring loaded) mounts.
    [​IMG]

    These can be purchased new from TAPerformance.
     
    grannyscj, Jun 3, 2013
    #3
  4. piffey263

    piffey263 Active Member

    my apologies to OP I thought the tensioner against timing chain was the timing chain tensioner.
     
    piffey263, Jun 3, 2013
    #4
  5. jpflat2a

    jpflat2a what's that noise?

    I think he's referring to the thrust button and spring that fit on the end of the cam and ride against the cover.
     
    jpflat2a, Jun 3, 2013
    #5
  6. 1960willyscj5

    1960willyscj5 Well-Known Member

    Are the different sources maybe talking about the same item but under different names?
     
    1960willyscj5, Jun 4, 2013
    #6
  7. grannyscj

    grannyscj Headed to the Yukon

    Here you go.
    [​IMG]
     
    grannyscj, Jun 4, 2013
    #7
  8. AKCJ

    AKCJ Active Member

    What I'm getting out of this is that some 225's have the cam tensioner on the end of the cam (like Rocky's) and some don't (like mine and like piffey's). This has been my understanding for quite some time.

    Rocky - thanks for the pictures of the timing chain setup. Very helpful.
     
    AKCJ, Jun 4, 2013
    #8
  9. Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Service manual calls it cam shaft thrust retainer. My 66 didn't have one and still don't.
     
    Walt Couch, Jun 4, 2013
    #9
  10. Posimoto

    Posimoto Hopeless JEEP Addict

    I have the spring loaded button, but replaced the chain with a double roller and eliminated the tensioner.
     
    Posimoto, Jun 5, 2013
    #10
  11. oddfirejeeper

    oddfirejeeper Active Member

    i believe all the cam button does is make sure the cam does not "walk" move front to rear.
     
    oddfirejeeper, Jun 5, 2013
    #11
  12. skeely

    skeely New Member

    late to say thanks for info and clarification. now i can button it up without any reservations. this really a great site!
     
    skeely, Jun 14, 2013
    #12
  13. nickmil

    nickmil In mothballs.

    An easy way to tell if your engine had a thrust button is to look at the inside of the timing cover. If there is a wear mark in line with the end of the camshaft on the timing cover it had a thrust button. If no wear mark it probably didn't.


    Sent from my iPhone
     
    nickmil, Jun 15, 2013
    #13