Current time: 12-07-2016, 01:18 PM Hello There, Guest! (LoginRegister)

Welcome to 7173Mustangs.com!

You are currently viewing the board as a guest. Please Register or Login for full functionality

If you registered and did not receive your email validation, please send a contact note to the admin by clicking here and filling out the short form.



 
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
wrong valve keepers
Author Message
not2old



*
"Norm"

Posts: 850
Joined: Aug 2010
Region: East
Upper Marlboro, MD
Reputation: 15



Meet and Greet 1 - 4

    Post: #1
    wrong valve keepers

    Started to build the heads after receiving new cam kit but the valve keepers don't fit the valve stems. Will have to contact Flatlanders Racing on monday to check part #'s. Damm and the temp's here are going up to the 70's next week, and now I don't have the parts to work.
    Offline 11-06-2010 06:49 PM
    Find all posts by this user Quote this message in a reply
    Tnfastbk



    *
    I'll Lock Up

    Posts: 7,245
    Joined: Sep 2010
    Region: Southeast

    Reputation: 69



    Car of the Month Trophy Shooter

      Post: #2
      RE: wrong valve keepers

      (11-06-2010 06:49 PM)not2old Wrote:  Started to build the heads after receiving new cam kit but the valve keepers don't fit the valve stems. Will have to contact Flatlanders Racing on monday to check part #'s. Damm and the temp's here are going up to the 70's next week, and now I don't have the parts to work.

      Angry WOW somebody else with my luck
      Offline 11-06-2010 06:58 PM
      Find all posts by this user Quote this message in a reply
      jorgem2



      *
      "A" List Customer

      Posts: 316
      Joined: Aug 2010
      Region: Not Selected
      Miami, FL
      Reputation: 13


        Post: #3
        RE: wrong valve keepers

        How did you find they were wrong?
        Offline 11-08-2010 02:46 PM
        Find all posts by this user Quote this message in a reply
        not2old



        *
        "Norm"

        Posts: 850
        Joined: Aug 2010
        Region: East
        Upper Marlboro, MD
        Reputation: 15



        Meet and Greet 1 - 4

          Post: #4
          RE: wrong valve keepers

          my valves have four grooves at the stem end


          Attached File(s)
          .jpg  042.JPG (Size: 124.21 KB / Downloads: 38)
          Offline 11-08-2010 02:58 PM
          Find all posts by this user Quote this message in a reply
          jorgem2



          *
          "A" List Customer

          Posts: 316
          Joined: Aug 2010
          Region: Not Selected
          Miami, FL
          Reputation: 13


            Post: #5
            RE: wrong valve keepers

            Those look like original valves, I would recomend replacing with single groove one piece stainless aftermarket valves.
            Its a common for the heads to fall off those valves, ruining many engines.
            I used some from a place on ebay called Alex's parts and they worked great reved that motor to 6500 rpm hundreds of times and they were only $108 a set. You Might have to email him I didnt see any listed now.

            http://stores.ebay.com/Alexs-Parts/FORD-...34.c0.m322


            There are lots of other brands as well. Be carefull to match the keepers to the retainers, they come in 10 degree and 7 degree in case you try to find multi groove keepers to re use your valves.
            If I remember correctly the Multi groove ford keepers will only work with ford retainers. These are designed to fit on the valve semi loosely to allow the valve to rotate while in use. The better single groove will clamp on to the valve solidly and not allow rotation.
            Offline 11-08-2010 04:24 PM
            Find all posts by this user Quote this message in a reply
            c9zx


            [Image: OKtechChuckreva.png]

            *
            My Mail is Forwarded Here

            Posts: 3,776
            Joined: Sep 2010
            Region: Southwest
            Mustang, OK.
            Reputation: 151



            Car of the Month Trophy A+ Writing Air Force Tutorial Coin

              Post: #6
              RE: wrong valve keepers

              As is stated above many 351C catastrophic engine failures were caused by valve failure. The multi-groove keepers were actually designed to touch each other on both faces when installed The thought was it would allow the valve to rotate. Why it was thought to be beneficial is unknown to me, perhaps even wear on seats and guides. Because the keepers actually touch on both faces the valve is not held tightly allowing it to move side to side slightly which hammers the grooves on the valve stem and keepers causing failure of one or both (this is worsened by excessive guide wear and high RPM). The end result is the engine swallows the valve and grenades (literally) the engine. The real fix is to, as suggested, replace the valves with single groove valves and keepers. If that is not possible use hardened after market multi-groove keepers that positive lock on to the valve and do not allow it to rotate. The valve springs supplied in your kit have a specified installed spring height dimension, make sure it is correct. If it is not there are several ways to correct (valve spring shims, spring cups, offset keepers, retainers). Also beware of replacement rocker arm fulcrums. In the past I experienced multiple failures of after market fulcrums. Valve train geometry is very important for optimal performance and longevity. If the heads are milled, the block is decked, the seats are high or deep, or more likely a combination of the above, you may need a non-stock push rod length. As with cam timing, multiple small errors add up and cause less than desired performance problems that are hard to diagnose after assembly.
              Offline 11-09-2010 11:15 PM
              Find all posts by this user Quote this message in a reply



              Possibly Related Threads...
              Thread Author Replies Views Last Post
                stock valve cover fit 73pony 6 165 11-02-2016 10:34 AM
              Last Post: turtle5353
                Valve Cover Paint Color bigfootlarry 2 230 09-22-2016 08:49 AM
              Last Post: Bill73Ragtop
                hot water shut off valve. Danno 4 499 03-07-2016 03:34 PM
              Last Post: Danno
                Valve bodies and late shifting Elizabeth73 15 1,062 02-11-2016 08:26 PM
              Last Post: mudbilly
                EGR valve naa10104 3 361 11-21-2015 08:48 PM
              Last Post: rocket366
                '71 Coupe Quarter Panel Wrong Color Dye ForSaleNo 2 378 10-28-2015 08:10 AM
              Last Post: 73pony
                Manual Valve Broken Elizabeth73 13 996 06-08-2015 10:14 PM
              Last Post: Totalled
                1972 Mach 1 w/ 32 Valve Cobra now w/Coyote Finmach 13 1,835 12-02-2014 06:50 AM
              Last Post: protouringstang73



              User(s) browsing this thread: 1 Guest(s)