273: To Tap or not to Tap

Early A-Body Discussions

  1. eekvonzipper

    eekvonzipper Jack Of All Trades and Master of Many!

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    I have a 273 in a '65 barracuda. One of the Fuel Pump Bolts is Stripped and spins
    by hand in the hole (Leaks Oil)
    Should I pull the Timing Cover Off and Drill and Tap the Hole
    or Should I be looking for a Replacement Timing Cover?
    It's the Old one with the Timing Marks on the Left Side...
    Thank You!
    -Eek

    leak.jpg
     
  2. MoparMike1974

    MoparMike1974 FABO Gold Member FABO Gold Member

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    It can be saved easily by installing a heli-coil.
     
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    • eekvonzipper

      eekvonzipper Jack Of All Trades and Master of Many!

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      Pull the cover for that, or sit down in there with a drill?
       
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      • C130 Chief

        C130 Chief Mechanical Genius

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        You should be able to Heli-coil the threads without taking anything more off the motor than the fuel pump and maybe the alternator so you can see what you're doing.
         
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        • MoparMike1974

          MoparMike1974 FABO Gold Member FABO Gold Member

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          Pull the cover unless you like metal shavings in your oil pan.
           
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          • RustyRatRod

            RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

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            Stuff a rag in the fuel pump hole REAL good. Drill to the appropriate size, then tap it with the heli coil tap. Put some blue locktite on the heli coil and install it. Let it cure for 24 hours. Done.
             
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            • Murray

              Murray FABO Gold Member FABO Gold Member

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              Rag is good, also lots of grease in the hole to catch shavings.
               
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              • RustyRatRod

                RustyRatRod Bla de blizhibliz de blatde blizi bla bla FABO Gold Member

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                Yup. I always pack the flutes of the tap with axle grease. It's like a magnet for metal shavings. I've even done spark plug holes in heads ON the engine and caught just about everything......at least nothing remained that hurt the engine. It's one of those old school tricks that flat out WORKS.
                 
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                • AJ/FormS

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

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                  and it's aluminum;
                  if you wreck it, you just weld it up and start over.
                   
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                  • eekvonzipper

                    eekvonzipper Jack Of All Trades and Master of Many!

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                    It's the Front bolt so I won't be drilling into the cover, just in front of it.
                     
                  • Oldmanmopar

                    Oldmanmopar Going left turning right FABO Gold Member

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                    Just have someone hold a vacuum such as a strong shop vac next to the hole while doing the work.
                     
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                    • Kendog 170

                      Kendog 170 Let the boy go !

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                      Yes Heli coil , but can't you get a longer bolt and add a nut on the back if it's the forward bolt ?
                       
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                      • abdywgn

                        abdywgn dismantler

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                        can you put in a longer bolt and put a nut against the cover?
                         
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                        • Tooljunkie

                          Tooljunkie King of cobble/master of the broken bolt FABO Gold Member

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                          If its the external bolt, heli coil is easy. i bet the bolt is too short, and 1/2 the threads are pulled out. Quick and dirty is a longer bolt and nut. I have had similar situations, and ground part of the nut to get it in line with the bolt.
                           
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                          • brian6pac

                            brian6pac Well-Known Member

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                            You wont need to drill but if you do coat the drill with grease and the chips will stick in the grease, then coat the tap with grease and tap it out the chips will stick to the grease. Like tooljunkie said there might be more threads in there deeper if you look, maybe find a longer bolt but don't hit the timing chain !
                             
                          • toolmanmike

                            toolmanmike FABO MODERATOR Staff Member FABO Gold Member

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                            Left bolt or right one in the photo?
                             
                          • eekvonzipper

                            eekvonzipper Jack Of All Trades and Master of Many!

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                            Right One...
                             
                          • brian6pac

                            brian6pac Well-Known Member

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                            The outside bolt?

                            It has to be the inside bolt to leak oil
                             
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                            • SGBARRACUDA

                              SGBARRACUDA ROY FABO Gold Member

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                              Usually see this happen when someone uses to short of bolts and pulls the first few threads out. You may get lucky and have enough threads left in the timing cover to use a longer bolt. If not my vote is the heli coil route. Also your timing marks are on the right side if the engine. You always refer to left and right from the drivers seat.
                               
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                              • Tooljunkie

                                Tooljunkie King of cobble/master of the broken bolt FABO Gold Member

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                                Not if pump isnt sealing due to one bolt holding it.
                                 
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                                • SGBARRACUDA

                                  SGBARRACUDA ROY FABO Gold Member

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                                  Not if it is leaking because there is a gap between the pump and the TC.
                                   
                                • brian6pac

                                  brian6pac Well-Known Member

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                                  That's true ! so I stand corrected LOL
                                   
                                • sccachallenger

                                  sccachallenger Well-Known Member

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                                  I've "saved" many holes by running the same size tap deeper in the hole and using a longer, full-thread bolt.
                                  The last one was two broken bolts on my '09 Charger engine mounts. You sometimes have to trim the bolt length or add washers to adjust the length.
                                   
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                                  • SGBARRACUDA

                                    SGBARRACUDA ROY FABO Gold Member

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                                    That’s funny. You had one of those”what the hell was I thinking “moments. Luckily that has never happen to me. BAAAH HAAH I cant even say that with a straight face.
                                     
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                                    • eekvonzipper

                                      eekvonzipper Jack Of All Trades and Master of Many!

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                                      Yes! That's The Answer!! Going Out there to do This Right Now!!! Thank You!!!!
                                       
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