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Dauntless pushrods

Discussion in 'Early CJ5 and CJ6 Tech' started by tinpan, Apr 11, 2012.

  1. Apr 11, 2012
    tinpan

    tinpan New Member

    Derby NY
    Joined:
    Sep 17, 2010
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    49
    Ok ,, I know this is probably gonna the dumbest question of the day ,,,, How does the oil get to the top of the engine ?? I'm workin on a 1967 Dauntless 225ci . I thought oil was supposed to get pumped up from the hydraulic lifter , thru the pushrod to the rocker assembly. none of the pushrods have oil passages in them ! I thought they were just plugged up , but when I tried to clean them , I noticed they appear to be solid . Ok ,, you can stop laughin now . I'll try to attach a couple pics . Dan


    http://farm8.staticflickr.com/7079/6922694694_93a776c716_m.jpg
    http://farm8.staticflickr.com/7257/6922693148_9e385f5473_m.jpg
     
  2. Apr 11, 2012
    jasonw

    jasonw noobster

    Penn Yan, NY
    Joined:
    Dec 23, 2008
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    34
    there is an oil port in the front of the head and the oil comes up through that and runs throught the rocker shaft and out the arms.........i am going through issues with either lack of oil or something else right now thats causeing clatter in my one valve cover, i hope all works out for you....
     
  3. Apr 11, 2012
    tinpan

    tinpan New Member

    Derby NY
    Joined:
    Sep 17, 2010
    Messages:
    49
    Jason,
    I just finished reading your post ,, Ok , so I'm not crazy , the pushrods are solid . Did you have the block and heads hot tanked when you did the rebuild ?? any chance that oil port is restricted ? Keep us posted on what you find . I"ll be interested to see . Hopefully it's just an adjustment issue . Thanks for the info , goin out to take a closer look at mine . Dan
     
  4. Apr 11, 2012
    47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    USA
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    the pushrods are solid. the oils gets into the head through an oil port on the head that goes up into the rocker arm assembly. there are 2 oil ports in the head. the front 2 on mine were blocked. i used a wire and some compressed air to clear them and some oven cleaner to get the rest of the crud out. chevy push rods are hollow.
     
  5. Apr 11, 2012
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    12,529
    Yes, 225 pushrods are solid and the rocker arms get oiled through the rocker arm pivot shafts. 231's oil the rockers through the pushrods.


    Sent from my iPhone using Tapatalk
     
  6. Apr 12, 2012
    jasonw

    jasonw noobster

    Penn Yan, NY
    Joined:
    Dec 23, 2008
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    there is only one oil port per head on my '70, in the front of the head, there are holes in the back of the head but there isnt one in the block to match up..........
     
  7. Apr 14, 2012
    47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

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    maybe thats why one of mine was filled with gunk.
     
  8. Apr 16, 2012
    robbetaylor

    robbetaylor New Member

    Stockton, MO
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    Jan 12, 2012
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    x2 - one port in front on my 70, rear is blocked
     
  9. Apr 17, 2021
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
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    Searching works. Now we know.
     
  10. Apr 19, 2021
    OzFin

    OzFin Vintage Jeep Guy

    Michigan
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    Jul 16, 2007
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    945
    Here is some additional info.
    Oz



    [​IMG]

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    [​IMG]
     
    Twin2 likes this.
  11. Apr 19, 2021
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Clearly the rear hole is there so the head can be used on either bank.
     
    fhoehle likes this.
  12. Apr 24, 2021
    53A1

    53A1 Member

    Kern Co. Ca.
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    Jun 17, 2008
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    I went through the same confusion. Oil finds it's way to the tip of the push rod and migrates down the push rod. I'm still not convinced they get enough oil but mine is still working. When I did my cam I blew air through the ONE feed on each bank to make sure it wasn't plugged. I also spun the oil pump with the rocker shafts removed and made sure oil was flowing out. Can't be too careful in this case.
     
  13. Apr 27, 2021
    SFaulken

    SFaulken Active Member

    Bellevue, WA
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    Lots of engines oil this way, Ford FE's for example, mostly engines that use a Shaft Rocker system.
     
  14. Apr 28, 2021
    Siskiwit

    Siskiwit Member

    Northern Wisconsin
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    Aug 13, 2016
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    67
    I pulled the heads off a spare engine and the oil holes in the block were plugged with white pasty oil. Couldn’t have been good for it. Will have to check the valve train for wear. Might be an expensive rebuild.
     
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