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Buick 231 rocker arms

Discussion in 'Early CJ5 and CJ6 Tech' started by Wrangster, Apr 6, 2010.

  1. Apr 6, 2010
    Wrangster

    Wrangster New Member

    Norway
    Joined:
    May 27, 2007
    Messages:
    27
    Hello again, I have a new problem I hope someone can help with. My rocker arms are the stamped out type and they sit on axles on the tops. The holes that the axle goes thru are about 0,1 inch bigger than the axle itself, giving a lot of "play" to the rocker arms. All the rocker arms are like this. Are they supposed to be like that or are mine worn out? Hope you guys are able to figure out what I meen despite my bad english.:)
     
  2. Apr 6, 2010
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
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    5,469
    If you can take a pic and post it, it would help. I believe your talking about the pushrods. On the rocker arms one side goes to the valve spring the other to the pushrods. You will have some play around them, and if the jeep has been sitting you may have some up and down as well. They are kept tight up and down by the lifters that ride on the CAM. Your lifters will be hydraulic and take oil from the motor to ‘inflate’ to get tight. If they don’t after it’s running – the lifters need replaced.
     
  3. Apr 6, 2010
    gte636p

    gte636p Member

    smyrna, Ga
    Joined:
    Sep 23, 2002
    Messages:
    492
    The ID of that rocker arm has a very loose fit to the OD of the shaft going through it, at least mine did when I took it apart. Nothing really out of the ordinary to me. The new parts I bought had a loose fit as well (not quite as much, but loose none the less). The only thing really holding it in place on the shaft is the nylon button.
     
  4. Apr 7, 2010
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    12,529
    Yup, 231's are a fairly loose fit on the rocker shafts. Just how loose would require a pic. The nylon buttons are primarily to keep the rocker arms in place side to side. Mine have been fairly loose for close to 20 years with no issues. They do wear out though. Need to see a pic of how worn down the rockers are.
     
  5. Apr 7, 2010
    Wrangster

    Wrangster New Member

    Norway
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    May 27, 2007
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    27
    Thanks alot for all answers. :) I will take some pics of it one of these days and we'll see. I would think that they dont lift as high and accurate as they schould when the rocker sits so loose on the axle, but maby I'm wrong.
     
  6. Apr 14, 2010
    Wrangster

    Wrangster New Member

    Norway
    Joined:
    May 27, 2007
    Messages:
    27
    Here I have got some pictures of them, I guess they are not so bad if they are suposed to be "loose" on the axle.

    [​IMG]

    [​IMG]

    [​IMG]
     
  7. Apr 14, 2010
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
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    12,529
    Those are pretty loose and I can see the wear on the bottom of the rocker arms which is typical because of the upward pressure from the cam and valve springs. Personally I'd look for some replacements.
     
  8. Apr 26, 2010
    Wrangster

    Wrangster New Member

    Norway
    Joined:
    May 27, 2007
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    27
    Ok, now new ones are purchased, or old new ones. I was looking around for parts here in norway because the vulcanos on Iceland made it difficult to order things from U.S. at that moment. I came across a guy sitting on alot of parts, almost a complete engine in all new or remanufactured parts. Here's a pic:

    [​IMG]

    Among all of this there was a set (or in fact 2 sets) of Kenne-Bell rockers and alot of other goodies. The rockers seem to be out of production, anyone who has an idea on how I can get some mounting instructions for them?

    [​IMG]
     
    Last edited: Apr 26, 2010
  9. Apr 26, 2010
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
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    5,349
    I'm certain Warloch has them on his motor, you might contact him.
     
  10. Apr 26, 2010
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
    Messages:
    5,469
    Yup - those are the ones I am running. I will look to see if I can find the instructions, but I remember just poping them on. You want to check the oil openings from the posts (where they mount on the head) and make sure they are the same on both sides. Sometimes the rockers are set with only one side open to hold more oil (high RPM design).

    In my opinion - those things are the best things out there. You can not find them unless you just stumble on them. GREAT find :)

    If you don't want that other set - PM me...
     
  11. Apr 26, 2010
    Wrangster

    Wrangster New Member

    Norway
    Joined:
    May 27, 2007
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    27
    Hey, great! Allways help to find here at ECJ-5! :) If you cannot find any intructions maby you can help anyway. Right now there are 3 things I'm wondering about.
    1. I have clearence issues, the rockers goes into the sides of the pedestals. When I search for Kennebell rockers I come to this page instead, and they seam to be the ones who have taken over production now.

    http://www.taperformance.com/proddetail.asp?prod=TA_V1309-1.65

    They mention that clearence issues may appear, did you have to grind your pedestals?
    2. I see that the ones they produce now use pipe-spacers instead of the springs on my set. I'm wondering does'nt the rockers get worn when the spring pushes it against the stands all the time?
    3. There are 8 shims marked "this side up" in the set. On my picture you can see I have mounted mine on each side of the springs, but I found a picture of someones set on the net and he only had shims inside of each needle-pin on the ends. Where did you put your shims, and what du you think they meen by "this side up" on a vertically mounted shim? :)
     
    Last edited: Apr 26, 2010
  12. Apr 26, 2010
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
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    I didn't find my instructions. The ones from TA are not the same as the ones from Kenne Bell. I do not remember having clearance issues (it was more than a few years ago). Post a pic of what your talking about and I will measure mine at that point for you. I have never had an issue with the springs on the wear. I will also try to get a pic for you of mine installed. I do have adjustable push rods, but that is left over from it's racing days.
     
  13. Apr 27, 2010
    Wrangster

    Wrangster New Member

    Norway
    Joined:
    May 27, 2007
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    Here is what I'm talking about.

    [​IMG]

    The rockers goes into the sides of the pedestals, as you can see the shaft still schould go about 1/5 inch further down before it lays in the pedestal.
     
  14. Apr 28, 2010
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    Got the pics, but have to wait till the wife brings the cable back. I should be able to post them tomorrow for you.
     
  15. Apr 29, 2010
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
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    Here are pics of mine installed - looks like you may need to grind. I can take measurements if you want (next week):

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
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