Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 
Like Tree1Likes

Thread: valve set on a 318
          
   
   

Reply To Thread
Page 2 of 4 FirstFirst 1 2 3 4 LastLast
Results 16 to 30 of 49
  1. #16
    HOSS429's Avatar
    HOSS429 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2007
    Location
    New Market
    Posts
    2,590

    Quote Originally Posted by jerry clayton View Post
    Didn't I tel you the shafts were upside down in October?????
    yes and they`re still upside down in janurary >>
    iv`e used up all my sick days at work .. can i call in dead ?

  2. #17
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2005
    Location
    Hamilton
    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
    Posts
    3,900

    Ouch.

    Gazinga
    Last edited by firebird77clone; 01-29-2013 at 03:16 PM.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  3. #18
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2005
    Location
    Hamilton
    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
    Posts
    3,900

    Ok, tomorrow I'll take a pushrod in to work and have the machinist modify it to make it adjustable. I'm still not entirely sure how to find the proper adjustment.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  4. #19
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2006
    Location
    Bartlett
    Posts
    6,831

  5. #20
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2005
    Location
    Hamilton
    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
    Posts
    3,900

    Great article.

    Unfortunately, it didn't explain how to for my dodge. For me to change contact on valve tip, wouldn't I need to shim the rocker shaft?
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  6. #21
    rspears's Avatar
    rspears is offline CHR Member/Contributor Visit my Photo Gallery
    Join Date
    Sep 2007
    Location
    Gardner, KS
    Car Year, Make, Model: '33 HiBoy Coupe, '32 HiBoy Roadster
    Posts
    11,077

    Quote Originally Posted by firebird77clone View Post
    Great article.

    Unfortunately, it didn't explain how to for my dodge. For me to change contact on valve tip, wouldn't I need to shim the rocker shaft?
    Not sure that I understand, but don't you want your rocker contact point to be exactly centered on the valve stem when the valve is exactly 50% open? That will center the roller on the valve stem for the full travel of the rocker, equal (and opposite) distances from the exact center point when the valve is closed and 100% open. The only way to shift that contact point is by adjusting the pushrod length on a rocker shaft setup, as I understand it?
    Roger
    Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.

  7. #22
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2006
    Location
    Bartlett
    Posts
    6,831

    There is basic differance in geometry between shaft rocker system and stud mounted rocker systems----in a shaft system the valve heights and shaft heights should be worked out so the geometry is correct-----

    In stud mounted systems everything is sorta self cancelling and somewhat forgiving---however every one puts in longer valves, changes rocker ratios from 1.5 to 1.6----etc

    with the adjustment being done via the height on the stud, the pushrod length is how you correct for geometry---------

    In this system on the mopar, the shafts are upside down with oil just squirting freely upwards and not lubing the under side of the rocker shaft ot the rocker----then the adjuster screws are screwed way down almost half way thru the lock nuts----they look like they are 7/16-20 thread which would equate .050 per revolution of the screw--so count the number of threads that you need to lengthen the pushrod---multiply by .050 and add that to the length of the current pushrods---they seem to be at very least 2 full turns down into the lock nuts plus are probably overextended 3 or 4 turns more underneath the rocker body---------

    I don't believe you read the full article, probably only the studff about the stud mounted rockers-----------

  8. #23
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2005
    Location
    Hamilton
    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
    Posts
    3,900

    It was lunchtime, and I was a bit rushed, so ill give the article another look.

    BUT, It sounds like I just need to be in the mid adjustment of the rocker arm.

    The machinist at work did a fine job modifying a pushrod to adjust. Now I just gotta remember to bring it home.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  9. #24
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2005
    Location
    Hamilton
    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
    Posts
    3,900

    I looked again, only one sentence pertains to rocker shaft set ups. It says pushrod length is critical for valve lash, but doesn't elaborate.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  10. #25
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2006
    Location
    Bartlett
    Posts
    6,831

    In your particular case---turn over the shafts----set adjusting screws in the middle of the range from full up with cup against the bottom of the rocker to a down adjustment that leaves a full nut on the lock nut-----measure with your adjustable rod---see if that will work on all 16 or whether you'll need 8 and 8 for intake and exhaust, etc------at this point you can look to see where the wear marks are on your valve tips--should be fairly small and centered in the middle------

  11. #26
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2006
    Location
    Bartlett
    Posts
    6,831

    I'd come down and help you but I once wrote a song about happiness was Ft Benning in my rear view mirror!

  12. #27
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2005
    Location
    Hamilton
    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
    Posts
    3,900

    Would have gotten on it today, but I bought a PILE of tools at co$t instead.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  13. #28
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2005
    Location
    Hamilton
    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
    Posts
    3,900

    Got back on it today, sixty degrees and sunny.

    Rocker shafts are good, not upside down. What you see in the picture is weep holes in the rocker arms.

    I looked at the adjusters on the rocker arms, they have two and a half turns available from their pictured position ( flush )

    So I ran it all the way out, and back in a full turn. I opened up the adjustable push rod, and it looks about 3/16" longer. I'll get an accurate measurement tomorrow at work, as I don't have a long enough caliper at the house.

    Also, I blacked out the top of a valve stem, and rolled the rocker tip against it. The mark is slightly off center, to the inside, exactly where It's supposed to be.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  14. #29
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2005
    Location
    Hamilton
    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
    Posts
    3,900

    It measures out to be 2.2 mm longer than the originals
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  15. #30
    rspears's Avatar
    rspears is offline CHR Member/Contributor Visit my Photo Gallery
    Join Date
    Sep 2007
    Location
    Gardner, KS
    Car Year, Make, Model: '33 HiBoy Coupe, '32 HiBoy Roadster
    Posts
    11,077

    Quote Originally Posted by firebird77clone View Post
    .....Also, I blacked out the top of a valve stem, and rolled the rocker tip against it. The mark is slightly off center, to the inside, exactly where It's supposed to be.
    So as you rotate the engine through a cycle, that mark should go from slightly off center to the inside to slightly off center to the outside, precisely equidistant from the centerline of the valve tip if everything is set perfectly, right? Just wanting to be sure I understand what you're saying, and my understanding of what's right.
    Roger
    Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.

Reply To Thread
Page 2 of 4 FirstFirst 1 2 3 4 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink