Come on Crane Cams !!!!!!

Discussion in 'Small Block Mopar Engine' started by daves66valiant, Sep 4, 2018.

  1. daves66valiant

    daves66valiant Slowly emerging from my long hibernation. FABO Gold Member

    Messages:
    2,627
    Likes Received:
    181
    Joined:
    Nov 24, 2005
    Location:
    SoCal
    Local Time:
    3:41 PM
    5E003D89-2655-4370-A197-7348A2A6BDEF.jpeg 8861E492-E937-4235-82CC-9941AFA8803A.jpeg 2581FA76-BA20-42B6-8882-ACC3E34601B9.jpeg I was working on the 340 yesterday measuring for pushrods with new locking adjusting nuts from Crane Cams. Well two of the mother#%>?>>>!ers broke at the Allen head. See the little cracks. WTF!!! Really bad. Very little pressure while tightening into my 273 rockers. The rockers already had threads chased and were very clean. No issues with originals.

    Hoping this is not an ongoing quality issue with these locking nuts. Plus they sent one that was the wrong sized ball end. SMH!!!

    Going to call Mancini Racing and see if they will send a new set. I don’t trust the one I got.

    What do you guys think?
     
  2. xLURKxDOGx

    xLURKxDOGx "An angel fat, at satan's feast"

    Messages:
    2,350
    Likes Received:
    438
    Joined:
    Dec 27, 2013
    Location:
    PHX
    Local Time:
    3:41 PM
    Do those have a locking nut? If so you’re supposed to run a tap through the rocker to clean the threads up. If not, poor quality.

    Jake
     
  3. 4spdragtop

    4spdragtop FABO Gold Member FABO Gold Member

    Messages:
    24,256
    Likes Received:
    3619
    Joined:
    Aug 28, 2009
    Location:
    Ontario
    Local Time:
    5:41 PM
    Interesting...I was thinking of.doing same with my rockers going in the 340. Ouch! Threads on factory rockers are "interference" threads, could that be the issue?
     
    Last edited: Sep 4, 2018
    • Like Like x 1
    • Agree Agree x 1
    • gzig5

      gzig5 FABO Gold Member FABO Gold Member

      Messages:
      120
      Likes Received:
      41
      Joined:
      May 3, 2018
      Location:
      Mequon, WI
      Local Time:
      5:41 PM
      Bad heat treatment. Probably improperly tempered or maybe the hex broach created stress risers. Either way I'd return the full set for replacement. You don't know which is next.
       
      • Agree Agree x 1
      • daves66valiant

        daves66valiant Slowly emerging from my long hibernation. FABO Gold Member

        Messages:
        2,627
        Likes Received:
        181
        Joined:
        Nov 24, 2005
        Location:
        SoCal
        Local Time:
        3:41 PM
        Yes they are the 12 point locking nuts.
        I did post that the rocker threads were chased and cleaned up before hand. Plus I oiled them as well.
         
      • brian6pac

        brian6pac Well-Known Member

        Messages:
        2,882
        Likes Received:
        1413
        Joined:
        Nov 15, 2016
        Location:
        N.E.Ohio
        Local Time:
        6:41 PM
        You need to machine the top of the rocker for the nut to set on, the rockers are never flat and it f**ks up the threads when you tighten the nuts tight. As said in other post you need to run a tap through it.
         
        • Agree Agree x 1
        • daves66valiant

          daves66valiant Slowly emerging from my long hibernation. FABO Gold Member

          Messages:
          2,627
          Likes Received:
          181
          Joined:
          Nov 24, 2005
          Location:
          SoCal
          Local Time:
          3:41 PM
          My thought was tempering as well. They broke so quickly. Very brittle. Would hate for one to snap off under a load. The other 13 nuts went in without issues. Never had an issue before using the same style on my other 340 in my valiant.
           
          Last edited: Sep 4, 2018
        • xLURKxDOGx

          xLURKxDOGx "An angel fat, at satan's feast"

          Messages:
          2,350
          Likes Received:
          438
          Joined:
          Dec 27, 2013
          Location:
          PHX
          Local Time:
          3:41 PM
          Sorry, my lazy eyes must have missed that part.

          Jake
           
          • Like Like x 1
          • brian6pac

            brian6pac Well-Known Member

            Messages:
            2,882
            Likes Received:
            1413
            Joined:
            Nov 15, 2016
            Location:
            N.E.Ohio
            Local Time:
            6:41 PM
            I broke one from tightening it up because of the rocker was not flat at all and it snapped the adjuster in half. Now I machine all the rockers and the tips so they are flat and they hit the valve straight across, haven't had a problem sense.
             
            • Like Like x 2
            • Agree Agree x 1
            • daves66valiant

              daves66valiant Slowly emerging from my long hibernation. FABO Gold Member

              Messages:
              2,627
              Likes Received:
              181
              Joined:
              Nov 24, 2005
              Location:
              SoCal
              Local Time:
              3:41 PM
              Yes I tapped them without issue. I didn’t lock any of them down tight. I mainly just wanted check my pushrod length and make sure they all threaded in easily. Well. That didn’t go so well.

              I didn’t get far enough to see where to machine/flatten the rockers as seen in other posts.
               
            • yellow rose

              yellow rose Doctor of Thinkology.

              Messages:
              15,415
              Likes Received:
              12001
              Joined:
              Jun 19, 2015
              Location:
              Living on the razors edge
              Local Time:
              3:41 PM


              Save yourself the effort and call Smith Brothers and get their adjusters. That's a heat treat issue. Mancini doesn't make the stuff, they are just a reseller.
               
              • Agree Agree x 4
              • Like Like x 1
              • Thanks! Thanks! x 1
              • daves66valiant

                daves66valiant Slowly emerging from my long hibernation. FABO Gold Member

                Messages:
                2,627
                Likes Received:
                181
                Joined:
                Nov 24, 2005
                Location:
                SoCal
                Local Time:
                3:41 PM
                Yes Mancini sells Crane’s junk. Hoping they will refund my $$$

                I will check out Smith Brothers’ adjusters. I’ve ordered pushrods from them before.
                 
              • moper

                moper FABO Gold Member FABO Gold Member

                Messages:
                15,235
                Likes Received:
                1343
                Joined:
                Dec 27, 2004
                Location:
                eastern CT
                Local Time:
                11:41 PM
                I wonder if that's one of the really old ones they had issues with (Crane - not Mancini...)?
                 
                • Like Like x 1
                • jos51700

                  jos51700 Well-Known Member

                  Messages:
                  4,309
                  Likes Received:
                  1064
                  Joined:
                  May 24, 2009
                  Location:
                  Bel-Ray
                  Local Time:
                  5:41 PM
                  If one doesn't match, the rest doesn't matter. Send those bitches back.
                   
                  • Like Like x 1
                  • daves66valiant

                    daves66valiant Slowly emerging from my long hibernation. FABO Gold Member

                    Messages:
                    2,627
                    Likes Received:
                    181
                    Joined:
                    Nov 24, 2005
                    Location:
                    SoCal
                    Local Time:
                    3:41 PM
                    The date of production on the box was 2016. Will be returning them when I can get time.
                     
                  • DARTGAME

                    DARTGAME FABO Gold Member FABO Gold Member

                    Messages:
                    665
                    Likes Received:
                    134
                    Joined:
                    Jan 20, 2005
                    Location:
                    santa barbara,ca
                    Local Time:
                    11:41 PM
                    sorry to see this Dave. That’s terrible. I would contact them.
                     
                    • Like Like x 1
                    • RustyRatRod

                      RustyRatRod Just another dumbass. FABO Gold Member

                      Messages:
                      46,502
                      Likes Received:
                      11052
                      Joined:
                      Jun 7, 2010
                      Location:
                      Georgia
                      View My Photos
                      Local Time:
                      6:41 PM
                      Look at the silver lining. At least you found it now, rather than after they caused a major engine failure.
                       
                      Last edited: Sep 4, 2018
                      • Agree Agree x 3
                      • Like Like x 2
                      • skrews

                        skrews Well-Known Member

                        Messages:
                        1,097
                        Likes Received:
                        379
                        Joined:
                        Jul 20, 2012
                        Location:
                        Washington state
                        Local Time:
                        3:41 PM
                        X2
                         
                      • famous bob

                        famous bob mopar misfit

                        Messages:
                        10,534
                        Likes Received:
                        2471
                        Joined:
                        Aug 14, 2011
                        Location:
                        okla
                        Local Time:
                        5:41 PM
                        He said that had been done ----poor quality !!
                         
                      • nm9stheham

                        nm9stheham Well-Known Member

                        Messages:
                        9,233
                        Likes Received:
                        1840
                        Joined:
                        Dec 20, 2013
                        Location:
                        Waynesboro, VA
                        Local Time:
                        6:41 PM
                        Easy to see one source of stress risers...those nice, sharp Vice Grip teeth will cut stress risers as soon as they are gripped on to the threads. With the allen socket; that area is always going to be weak. When they are sent back, be prepared if you get some flack over it.

                        In future, try locking a couple of nuts together onto the adjusters and use that to turn them in.
                         
                      • daves66valiant

                        daves66valiant Slowly emerging from my long hibernation. FABO Gold Member

                        Messages:
                        2,627
                        Likes Received:
                        181
                        Joined:
                        Nov 24, 2005
                        Location:
                        SoCal
                        Local Time:
                        3:41 PM
                        Vise-grips were to back fuckers out after they broke The Allen key hole was stress cracked. No way to back them out with an Allen wrench when it spins. Those nice vise-grip could have stayed in the toolbox if the product wasn’t flawed.
                         
                      • MOPAROFFICIAL

                        MOPAROFFICIAL Well-Known Member

                        Messages:
                        2,513
                        Likes Received:
                        1494
                        Joined:
                        Jun 1, 2016
                        Location:
                        breakwater
                        Local Time:
                        3:41 PM
                        Here's what I know , not what I think...crane has a very bad reputation for adjusters breaking. This was supposed to be a thing of the past... I don't chance it though, I buy Harland sharp Adjusters and have 0 problems. I suggest you do the same, after returning those pieces of shit.
                         
                        • Like Like x 2
                        • perfacar

                          perfacar Well-Known Member

                          Messages:
                          996
                          Likes Received:
                          178
                          Joined:
                          Mar 1, 2006
                          Location:
                          renton,wa
                          Local Time:
                          3:41 PM
                          crane had their rocker adjusters made off shore. we've found brittle, and soft. smith bros has the best setup. LMAO, the vise grips were the reason they failed??
                           
                          • Like Like x 1
                          • daves66valiant

                            daves66valiant Slowly emerging from my long hibernation. FABO Gold Member

                            Messages:
                            2,627
                            Likes Received:
                            181
                            Joined:
                            Nov 24, 2005
                            Location:
                            SoCal
                            Local Time:
                            3:41 PM
                            I’m putting a call into Smith brothers here shortly. Their adjusters are $113 to my door. More than double the price but in this instance you get what you pay for. Thought Crane was reputable......uh.....not.

                            May as well have them make my pushrods too.
                             
                          • MOPAROFFICIAL

                            MOPAROFFICIAL Well-Known Member

                            Messages:
                            2,513
                            Likes Received:
                            1494
                            Joined:
                            Jun 1, 2016
                            Location:
                            breakwater
                            Local Time:
                            3:41 PM
                            Harlands are 90.00

                            Make your decision on a geometry kit now because if you buy pushrods and then decide on a kit later you'll also be buying new longer pushrods, again.
                             
                            • Agree Agree x 2
                            • Like Like x 1