Great Timing Cover "Pains"

Small Block Mopar Engine

  1. dibbons

    dibbons Well-Known Member

    Messages:
    5,191
    Likes Received:
    3185
    Joined:
    Nov 6, 2009
    Location:
    La Paz, B.C.S., Mexico
    Local Time:
    1:23 AM
    What's the best/easiest why to pull the harmonic balancer in order to replace a leaky timing cover (coolant leak around water pump bolt from cavitation wearing out the aluminum)? All the drive train components (904 torqueflite, starter, drive shaft, motor) are installed and ready to go (darn it)! How am I to break loose that crank bolt? Rent/borrow/steal an impact wrench maybe?

    The 318 was rebuilt ten years ago and only has about 2,000 mile on it. I guess as an "economy" move, I must have re-used the old timing cover. I won't be doing that again any time soon.

    After the recent restoration ('65 Formula S) I replaced the drive train and found a fairly major leak as soon as I began re-filling the radiator. I had used sealer on the bolt threads so at first it was a mystery. After applying sealant a second time, still leaked. "Alumaseal" stop-leak came to the rescue after about a ten-minute warm-up but only lasted a few days which got me to thinking: "this leak is too profuse to be squirting around some bolt threads".

    So I brought out an older 340 timing cover in storage only to find the area around the same suspect area was completely worn away (see photo #1 where the screwdriver tip is pointing). I concluded my installed timing cover must be in similar shape (see photo #2). I pulled the water pump and verified my suspicions. I could see the paper gasket in that spot was not being compressed at all, providing a free channel for the coolant to make its escape (see photo #3). At least now I can see some light at the end of the tunnel. Thanks for any and all help in this matter!

    IMG_0200.jpg

    IMG_0201.jpg

    IMG_0202.jpg
     
  2. eekvonzipper

    eekvonzipper My Member is Legendary! FABO Gold Member

    Messages:
    818
    Likes Received:
    685
    Joined:
    Apr 18, 2020
    Location:
    Cadet, Missouri
    Local Time:
    3:23 AM
    Impact Gun will make quick work of it...
    Failing that. The Hillbillies will put a Breaker-Bar on the Nut and Crank the Starter for a Second.
    It'll either Do a Wheelie or Pop the Bolt loose.
     
    • Like Like x 1
    • Thanks! Thanks! x 1
    • Agree Agree x 1
    • cudamark

      cudamark FABO Gold Member FABO Gold Member

      Messages:
      9,265
      Likes Received:
      1620
      Joined:
      Mar 14, 2009
      Location:
      San Diego
      Local Time:
      1:23 AM
      I've seen worse looking covers that didn't leak. Early covers in good shape are getting fairly hard to find. But, to answer your first question, if you don't have access to an impact gun, try using a breaker bar and a big hammer. If that doesn't work, they make flywheel locks that attach to the ring gear and hold the crank from turning. Not sure which trans you have and if one of those locks is available where you are. I'd probably just break down and get an impact gun. They have all sorts of uses. I assume you have a puller for the balancer once the bolt is removed, right? Use a three jawed one, not a 2 jaw, and one that bolts to the center hub, not the other ring.
       
      • Thanks! Thanks! x 1
      • dibbons

        dibbons Well-Known Member

        Messages:
        5,191
        Likes Received:
        3185
        Joined:
        Nov 6, 2009
        Location:
        La Paz, B.C.S., Mexico
        Local Time:
        1:23 AM
        Does that crank bolt have a 1 1/4" head? My socket that size seems to fit, but has a little play in it.
         
        • Agree Agree x 1
        • kursplat

          kursplat FABO Gold Member FABO Gold Member

          Messages:
          4,306
          Likes Received:
          3273
          Joined:
          Aug 24, 2010
          Location:
          so cal
          Local Time:
          1:23 AM
          you can also try a strap wrench on the dampner
           
          • Thanks! Thanks! x 1
          • 12many

            12many Well-Known Member

            Messages:
            2,663
            Likes Received:
            3246
            Joined:
            Dec 14, 2016
            Location:
            SC
            Local Time:
            4:23 AM
            Agree with the breaker bar and a BFH. Just keep everything square, lined up and socket all the way on the bolt when you whack it sharply so it doesn’t slip off only to smash your hand, the frame, or bash the radiator. You could make a piston stop out of a grade 8 (maybe 5?) bolt if you can find one, round the edges of it a little and rotate the engine backwards till a piston contacts it and gently bear down on the breaker bar.
             
            • Thanks! Thanks! x 1
            • cudamark

              cudamark FABO Gold Member FABO Gold Member

              Messages:
              9,265
              Likes Received:
              1620
              Joined:
              Mar 14, 2009
              Location:
              San Diego
              Local Time:
              1:23 AM
              Remove the radiator before trying any of these tricks!
               
              • Like Like x 3
              • Agree Agree x 1
              • Joey4speed

                Joey4speed FABO Gold Member FABO Gold Member

                Messages:
                1,726
                Likes Received:
                1440
                Joined:
                Jul 17, 2018
                Location:
                Coastal NC
                Local Time:
                4:23 AM
                I know here in the states, Harbor Freight has an inexpensive 1/2" drive electric impact gun.
                Or
                Not sure if you have any of those Hiway help trucks that change flat tires, but they're ready to go with compressor and impact, for quick tire changes.
                 
                • Like Like x 1
                • Thanks! Thanks! x 1
                • d1970

                  d1970 TODAY IS A GOOD DAY TO HAVE A GOOD DAY

                  Messages:
                  439
                  Likes Received:
                  260
                  Joined:
                  Sep 29, 2015
                  Location:
                  Ontario, Canada
                  Local Time:
                  3:23 AM
                  I usally remove a spark plug and install a rope in the cylinder, bring the piston up. Then I use a breaker bar to loosen the bolt. Like everyone says an impact gun does it quickly.
                   
                  • Like Like x 2
                  • Thanks! Thanks! x 1
                  • Agree Agree x 1
                  • missing linc

                    missing linc Loose nut behind the wheel

                    Messages:
                    4,928
                    Likes Received:
                    9360
                    Joined:
                    Feb 17, 2019
                    Location:
                    Southern Alberta Canada
                    Local Time:
                    2:23 AM
                    I have put a pair of vise grips on the flex plate and a breaker bar. Did it that way when torquing the balancer bolt on my brother's Buick nailhead to 250 ft lbs, no problems.
                     
                    • Agree Agree x 1
                    • ch1ll

                      ch1ll FABO Gold Member FABO Gold Member

                      Messages:
                      1,294
                      Likes Received:
                      691
                      Joined:
                      Jun 12, 2009
                      Location:
                      Belgium,wi
                      Local Time:
                      3:23 AM
                      Make sure you use a 6 point socket on that balancer bolt and harbor freight has a cordless 1/2 earth quake impact wrench for $230 or so, one of the best tools I have ever bought/owned. You’ll swear your crazy that you haven’t bought one sooner. Mine is going on 4 yrs old and it is a champ.
                       
                      • Thanks! Thanks! x 1
                      • Agree Agree x 1
                      • AJ/FormS

                        AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s FABO Gold Member

                        Messages:
                        22,062
                        Likes Received:
                        9226
                        Joined:
                        Jan 19, 2014
                        Location:
                        South-Central Manitoba,Canada, 900ftelevation
                        Local Time:
                        3:23 AM
                        IIRC that gasket can be installed backwards, the bolts sorta fit, but the dang thing doesn't cover the sealing surface adequately and leaks. The bolts in those tunnels need to have a thread sealer on them, as some of them go into the water jackets. I think it's the upper ones. But there are three or four different length bolts and if you don't install them in the right locations, it is possible to drive a too-long bolt into the side of a cylinder and crack the cylinder, and now water runs into the pan. The location that I'm thinking of is the #1 cylinder, on the driver's side, I think the top one, but not sure.

                        BTW
                        the rope in the cylinder trick has worked for me, together with a sharp rap of a BFH on the breaker bar. But if you do this, make sure whatever cylinder you use, that it is coming up on compression so that the valves are both closed.
                        The starter method works better.
                         
                        • Thanks! Thanks! x 1
                        • RustyRatRod

                          RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

                          Messages:
                          81,426
                          Likes Received:
                          60983
                          Joined:
                          Jun 7, 2010
                          Location:
                          Georgia
                          Local Time:
                          4:23 AM
                          1) Disable the ignition.

                          2) Put the appropriate size socket on a long 1/2 drive ratchet or breaker bar.

                          3) Put ratchet or breaker bar on the bolt and position the breaker bar about 6" away from striking the K frame on the passenger's side, making sure nothing is between the bar and the K frame.

                          4) Bump the starter.

                          5) Remove the crankshaft bolt.
                           
                          • Like Like x 1
                          • Thanks! Thanks! x 1
                          • dibbons

                            dibbons Well-Known Member

                            Messages:
                            5,191
                            Likes Received:
                            3185
                            Joined:
                            Nov 6, 2009
                            Location:
                            La Paz, B.C.S., Mexico
                            Local Time:
                            1:23 AM
                            This morning my neighbor (Carlos) across the street pulled his Ford Ranger out front with an industrial compressor mounted on the bed. Employed him to zip off the crankshaft bolt. He must have spent a good 15 minutes looking around in his large metal tool box for an appropriate socket. Then 15 seconds to do the job.

                            I asked how much did I owe him? He said whatever you want to give. Handed him a $200 peso bill (about 10 USA dollars). I guess we both parted satisfied. Now to watch a little NFL football for the rest of the day.

                            Before Carlos pulled out, he asked if he could help himself to some tiny ornamental oranges from the tree beside his pickup truck (I have no use for them). I said sure, so he gathered up about half a dozen (not much larger than a cherry). I asked if he was going to make some tea or punch, but no, he said he eats 'em. Must have been a hungry Jack.

                            IMG_0203.jpg

                            jacks.jpeg
                             
                            Last edited: Nov 14, 2021
                          • AJ/FormS

                            AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s FABO Gold Member

                            Messages:
                            22,062
                            Likes Received:
                            9226
                            Joined:
                            Jan 19, 2014
                            Location:
                            South-Central Manitoba,Canada, 900ftelevation
                            Local Time:
                            3:23 AM
                            Hooray for Carlos!
                             
                          • RustyRatRod

                            RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

                            Messages:
                            81,426
                            Likes Received:
                            60983
                            Joined:
                            Jun 7, 2010
                            Location:
                            Georgia
                            Local Time:
                            4:23 AM
                            Let's go Carlos!
                             
                          1. This site uses cookies to help personalize 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.