Re-use bolts on PP & FW ??

Engine, Trans & Driveline

  1. Rick Rockett

    Rick Rockett FBBO Gold Member FBBO Gold Member

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    I'm going to replace my clutch (including the pressure plate), and I'm wondering if I can re-use my old bolts, both on the PP & on the flywheel.
    ('69 stock 383 4bbl)
    I know it would be "easy" enough to do so, but I've got everything I need, except for new bolts & I'm eager to get started. OK to re-use the old bolts?
    Also, where would I obtain new bolts? Anyone know the sizes?
    Thanks.
     
  2. Jerry Hall

    Jerry Hall Well-Known Member

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    I see no problem with reusing the bolts, just torque to specifications and use some loctite.
     
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    • 1 Wild R/T

      1 Wild R/T Well-Known Member

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      Agree... If you were building a new 600HP stroker I might look for some ARP stuff but for what your doing you are fine...
       
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      • Fran Blacker

        Fran Blacker FBBO Gold Member FBBO Gold Member

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        • Rick Rockett

          Rick Rockett FBBO Gold Member FBBO Gold Member

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          Is Loctite recommended? If so, which one?
           
        • bm02tj

          bm02tj Well-Known Member

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          I would use blue
          Check bolts for stretch or damage before reuse
           
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          • matthon

            matthon Well-Known Member

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            Just did it recently and followed the instructions included with the bolts.
            ARP bolts.
            Use the ARP torque specs included with the bolts.
            The ARP ultra-torque came with the flywheel bolts.

            Flywheel - 75 ft/lbs for 7/16-20 bolts, Loctite 242 on threads, ARP ultra-torque under bolt heads.

            Pressure plate - 45 ft/lbs for 3/8-16 bolts, with ARP lube.
             
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            • Fran Blacker

              Fran Blacker FBBO Gold Member FBBO Gold Member

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              If you use fastenal buy Grade 8 bolts. Be careful not to buy bolts that are to long, especially flywheel bolts.
               
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              • Rick Rockett

                Rick Rockett FBBO Gold Member FBBO Gold Member

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                Thanks much!!
                The pressure plate bolts on that link at Summit, only show CHEVROLET on their application chart.
                Is that the part number you used? Good for MOPAR BB?
                 
                Last edited: Feb 1, 2020
              • pro-streeter

                pro-streeter Well-Known Member

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                Little blue loctite pass a visual inspection reuse and torque to factory specs
                 
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                • Daves69

                  Daves69 Well-Known Member

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                  The customer comments after the Summit ad say yes.
                  HOWEVER, do the old bolts that you have now have the 9/16" head? Check your bolt fit to the new clutch cover before you order. Some covers may not have clearance for the 9/16" bolt head.

                  Here's what came in the MP Flywheel Att Pk.
                  upload_2020-2-1_13-36-15.png
                   
                  Last edited: Feb 1, 2020
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                  • Rick Rockett

                    Rick Rockett FBBO Gold Member FBBO Gold Member

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                    Yes, I saw that 'customer-to-customer' reply in the Q&A. Might be more convincing if Summit had replied.
                    I see they have a set of McLeod bolts (for twice the price!) that show the Plymouth application I need... and also show the same size as the ARP bolts.
                    "Size is Size", right? (3/8-16)
                    Seemingly, the ARP bolts should work?
                    I don't have anything taken apart yet, so idk if the bolt heads on my car are 9/16.
                     
                  • Daves69

                    Daves69 Well-Known Member

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                    3/8"-16 is the thread size for the cover to flywheel att.
                    If you have a 3/8" bolt with a 9/16" head laying around, you can check your bolt head to cover clearance with that before you order.
                     
                  • Bb70charger500

                    Bb70charger500 Well-Known Member

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                    I'm fairly certain grade 5 bolts are what you want they have stronger left to right load grade 8 is for like pull away load .
                     
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                    • Fran Blacker

                      Fran Blacker FBBO Gold Member FBBO Gold Member

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                      You are correct, I should've know that. Distort before breaking, kind of a warning. Start klunking before breaking.
                       
                    • Bb70charger500

                      Bb70charger500 Well-Known Member

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                      Years ago my boss said the company would pay me for any training class I found so I sat threw a 2 day class about nuts! And bolts !
                       
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                      • vintage chromoly

                        vintage chromoly FBBO Gold Member FBBO Gold Member

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                        I’d take the pressure plate and flywheel in and have it neutral balanced.
                        I have a Hays SFI billet flywheel that was supposed to be neutral and needed work.
                        Also have a McCleod pressure plate that was supposed to be neutral and was way off. We had to weld an ingot to it to balance it.

                        It only cost me about 125 to have them both done.
                         
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                        • Rick Rockett

                          Rick Rockett FBBO Gold Member FBBO Gold Member

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                          Well, I was able to get the bolts that 'matthon' suggested from Summit. Looks like there's plenty of room around the new [RAM] clutch cover for a 9/16" bolt head. If all doesn't go as planned, I guess I can always re-use the old bolts if they look ok.
                           
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                          • matthon

                            matthon Well-Known Member

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                            Yes and yes.
                            Original 383 4 speed car, just put a new flywheel, pp, and clutch in it.
                             
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                            • john-9

                              john-9 Member

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                              really ????? grade 5 bolts for installing a clutch and pressure plate -- somebody may have went to class for nut and bolt tech but they were not listening --- factory used grade 8 --- if you want to use grade 5 bolts in this application -- the next time you take your car out for a ride get a grenade ,pull the pin out and jam the arm under the console or seat -- believe me you are not going to hear any clunking before it lets go.
                              look up clutch explosions on you tube.
                               
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