A Public service announcement for 4-speed owners

Engine, Trans & Driveline

  1. blue69runner

    blue69runner Well-Known Member

    Messages:
    530
    Likes Received:
    567
    Joined:
    Jun 1, 2020
    Location:
    Lake Wales Fl.
    Local Time:
    3:46 AM
    My crank had deep groves in it and the motor builder said it was from Ridding the clutch or maybe a failing toque converter. So it was on the second bearing cap also. Yes don't ride the clutch when driving. Or hold the clutch in except to change gear's. Point well taken on the pictures you showed.
     
    • Thanks! Thanks! x 1
    • EARLY B

      EARLY B Well-Known Member

      Messages:
      214
      Likes Received:
      113
      Joined:
      Oct 7, 2014
      Location:
      ALLENTOWN,PA
      Local Time:
      3:46 AM
      Mahle-clevite has info on oil improvement for the thrust side of the main bearing. Suggest to file 0.040 off the top bearing in the block on the rear side at the parting line to increase oil flow to thrust area. they show photos of how. 4secondsflat has this info also
       
      • Like Like x 1
      • Ranger16

        Ranger16 Well-Known Member

        Messages:
        4,055
        Likes Received:
        5040
        Joined:
        Jun 27, 2016
        Location:
        Woodstock Ill.
        Local Time:
        2:46 AM
        One more good reason to prime the float bowls after a long rest.
         
        • Agree Agree x 2
        • Like Like x 1
        • funknut

          funknut Well-Known Member

          Messages:
          1,391
          Likes Received:
          1673
          Joined:
          Jul 29, 2015
          Location:
          Cincinnati, OH
          Local Time:
          2:46 AM
          Honest question, but how are you planning to address this? Just swap in a new thrust bearing and button it back up? Or is more needed to make it right?
           
          • Like Like x 1
          • moparedtn

            moparedtn Ed on the Ridge FBBO Gold Member

            Messages:
            10,240
            Likes Received:
            16671
            Joined:
            May 14, 2011
            Location:
            On the Ridge, TN
            Local Time:
            3:46 AM
            Here ya go:
            red x club small.jpg
            :lol:
             
            • Like Like x 1
            • Thanks! Thanks! x 1
            • mopar 3 B

              mopar 3 B Well-Known Member

              Messages:
              10,224
              Likes Received:
              7656
              Joined:
              Aug 25, 2014
              Location:
              Kingsville, MO
              Local Time:
              2:46 AM
              Anyone old enough "well yes most of us are" to remember when the starter button was under the clutch pedal and activated when disengaging the clutch. Then there were those totally separate from anything but still required a foot. Can still remember those times sitting on the edge of the truck seat so I could reach the pedals on the old Studebaker truck hoping it would start without needing gas because if it did it was a three foot operation even out of gear if not parked on level ground. Must have been 12 or 13 at the time.
               
              • Like Like x 1
              • Richard Cranium

                Richard Cranium FBBO Gold Member FBBO Gold Member

                Messages:
                33,864
                Likes Received:
                88453
                Joined:
                Feb 20, 2012
                Location:
                Maskachusetts
                Local Time:
                2:46 AM

                You didn't fully read post #1.............

                 
                • Thanks! Thanks! x 1
                • polyjohn

                  polyjohn Well-Known Member

                  Messages:
                  113
                  Likes Received:
                  60
                  Joined:
                  Mar 6, 2018
                  Location:
                  Island of Sheeps.
                  Local Time:
                  8:46 AM
                  Nice thread!

                  The thrust bearing is always a worry in manual cars and auto's too.
                  The pre 69/70 cranks/blocks are obviously designed for the narrower bearing.
                  Thats why if I'm building a 4 speed engine I like to use the 70-up 'wide flanged' steel cranks.
                  I have also modified the wide centre bearing to fit in the earlier block as well.
                  But where ever possible I would use the later CAST crank 440-blocks with the wider faced bearing.

                  We are very lucky here in the UK due to the large amount of EX-Jensen 440 engines.
                  They are all 1972-1976 HP blocks with the wide bearing SP crankshafts!
                  Thay all have SP rods and a quick change to a Hyper piston and the 'jobs a gooden'...:praying:
                   
                  • Like Like x 1
                  • funknut

                    funknut Well-Known Member

                    Messages:
                    1,391
                    Likes Received:
                    1673
                    Joined:
                    Jul 29, 2015
                    Location:
                    Cincinnati, OH
                    Local Time:
                    2:46 AM
                    Yep, sure didn't! :thumbsup:
                     
                    • Like Like x 1
                    • Thanks! Thanks! x 1
                    • blue69runner

                      blue69runner Well-Known Member

                      Messages:
                      530
                      Likes Received:
                      567
                      Joined:
                      Jun 1, 2020
                      Location:
                      Lake Wales Fl.
                      Local Time:
                      3:46 AM
                      I was just telling a buddy of mine about the starter switch being on the floor board. Guess were a couple of old dinosaurs. LOL.
                       
                    • Ceedawg

                      Ceedawg Well-Known Member

                      Messages:
                      741
                      Likes Received:
                      455
                      Joined:
                      Jul 22, 2018
                      Location:
                      Va
                      Local Time:
                      3:46 AM
                      My grandfather’s 46 Dodge 3/4 ton truck was next to gas pedal, the Nash (huge thing) was under the gas pedal, I think, been 60 some years
                       
                      • Like Like x 1
                      • blue69runner

                        blue69runner Well-Known Member

                        Messages:
                        530
                        Likes Received:
                        567
                        Joined:
                        Jun 1, 2020
                        Location:
                        Lake Wales Fl.
                        Local Time:
                        3:46 AM
                        I am in my mid 60's. Guess we keep the old vehicles around down south for a long time. Or the older ones just lasted better than the newer car from the 60's and up. I do believe they where made to last back then. Not be thrown away. They where much simpler to work on and not the night mare the new gen car's are to day.
                         
                      • Challenger340

                        Challenger340 Well-Known Member

                        Messages:
                        656
                        Likes Received:
                        678
                        Joined:
                        Mar 4, 2014
                        Location:
                        jaffray, B.C. Canada
                        Local Time:
                        1:46 AM
                        Yep.... everytime you step on that fancy new Clutch/Pressure Plate ?
                        You are indeed trying to stuff your Crankshaft out the front of your Block.... with only that teensie-weensie little #3 Thrust Brg face to stop it ?
                        and...
                        making things even worse is that the only lubrication to assist that Thrust face in doing it's job is leakage/throw-off ? NOT optimal !

                        So seeing as how we're doing Public Service announcements....
                        here's one we started applying on all our BB Mopars/Hemi's decades ago..... and later started applying as a campaign change on the PSCA Turbo'd 10.5" Tire class Ferd dorks to stop those meatheads from trash'in their Cranks while spool'in up at the line....
                        works GREAT !
                        just applies a very small "pressurized" Oil Feed to the rear Thrust face from the center Oil Pressure groove to help things out !

                        The Ferd dorks thought we were hero's because we could make their junk live with this Mod ?
                        Before then...
                        It had been kinda comical watching SCAT BLAME the faulty Clevitte thrust bearings.... and Clevitte Tech Bulletins BLAMING the Thrust finish on SCAT Cranks
                        back and forth...
                        back and forth...
                        we just sat back piss'in ourselves laughing with our nail file watching 2 Companies sling mud at each other ? and thinking WTF is wrong with common sense these days ? NOT that common in the Ferd ranks I guess ?

                        Should be self-explanatory in the Pics.... about .030" wide is PLENTY !

                        IMG-2622.jpg IMG-2623.jpg
                         
                        Last edited: Mar 18, 2021
                        • Like Like x 1
                        • Thanks! Thanks! x 1
                        • Challenger340

                          Challenger340 Well-Known Member

                          Messages:
                          656
                          Likes Received:
                          678
                          Joined:
                          Mar 4, 2014
                          Location:
                          jaffray, B.C. Canada
                          Local Time:
                          1:46 AM
                          Doesn't matter how 'wide' the Thrust Brg in the Block is if it doesn't get sufficient lubrication ?
                          We've run both wide and narrow(early) Thrust Blocks .... apply the above Mod I posted and problem solved.
                           
                          • Like Like x 1
                          • Richard Cranium

                            Richard Cranium FBBO Gold Member FBBO Gold Member

                            Messages:
                            33,864
                            Likes Received:
                            88453
                            Joined:
                            Feb 20, 2012
                            Location:
                            Maskachusetts
                            Local Time:
                            2:46 AM

                            I do here. :D
                             
                          • mopar 3 B

                            mopar 3 B Well-Known Member

                            Messages:
                            10,224
                            Likes Received:
                            7656
                            Joined:
                            Aug 25, 2014
                            Location:
                            Kingsville, MO
                            Local Time:
                            2:46 AM
                            Two years before I got my driver's license dad put a V8 in that old Studebaker with an electric starter solenoid "key switch". I think the whole family was tickled it had become a two foot start vehicle instead of the three know one had. Dad bought that old truck new just before they got married. Mom still has it. Dad passed away about 7 years ago. We are hoping it stays in the family.
                             
                            • Like Like x 1
                            1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
                              By continuing to use this site, you are consenting to our use of cookies.