Piston Ring Compressor

Engine, Trans & Driveline

  1. roadrunnerh

    roadrunnerh Well-Known Member

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    Hello guys!
    I'm going to be purchasing a ring compressor for my 383 piston installation. I was going to get one of the Chinese made ratcheting band style, then came across the ARP 4.250 tapered ring compressor. The band style is only $10 or so, the ARP is $55.
    Which have YOU used? This is my first time building an engine, ARP route sounds less likely to break/damage a ring.
     
  2. 33 IMP

    33 IMP FBBO Gold Member FBBO Gold Member

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    I have used the corrugated style with the overcenter lever. They work well for me, the inside of the corrugation compressing the rings, the outside keeping the compressor from going into the cylinders.
    That being said... the single size tapered aluminum compressors really work slick. I made myself three, 4.030 ,4.155, and 4.350. I have NOT tried the adjustable tapered compressors. If i need something i dont have, i use my corregated one.
     
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    • 451Mopar

      451Mopar Well-Known Member

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      Tapered are way easier to use. Really, the problem is the ratcheting strap type with smooth sides will want to try and slide into the block with the piston because of the chamfer at the top of the bore, and also, most people over tighten the compressor thinking it will help, but make the problem worse because it is now holding the piston tighter.
      Anyhow, The ARP ones are nice. I haven't tried the Total Seal version. I hear they are good, and only cost $37.55

      https://www.summitracing.com/parts/tsr-rc4250/overview/
       
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      • zyzzyx

        zyzzyx FBBO Gold Member FBBO Gold Member

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        I'm a Machinist so over the years it took nothing for me to take a piece of heavy walled
        tubing and stick it in the lathe. I love the tapered installers because you can push the
        piston in with your thumb. If the machine shop puts more than a 32nd chamfer on
        the bores, the ratcheting ones won't work so good. The other option that works is the
        clamp-type. They compress the rings 350 degrees, so it's the next best thing.
         
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        • 33 IMP

          33 IMP FBBO Gold Member FBBO Gold Member

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          @zyzzyx , cmon, you are in Lisle, and you don't use a Lisle ring compressor? Lol.
           
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          • zyzzyx

            zyzzyx FBBO Gold Member FBBO Gold Member

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            Ya got me on that one! (shhhhh! Don't tell anyone)
             
          • 69L48Z27

            69L48Z27 Well-Known Member

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            Summit makes an adjustable one for under $30. I’ve used all three and the more you pay the better the experience but all three work.
             
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            • Stanton

              Stanton Well-Known Member

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              Back in '74 when I did my first build the only affordable ring compressor was the ratchet band type. It has served me well on numerous builds. As for it trying to slip down the bore because of the small chamfer, not a big issue as it has dimples (for lack of a better term) around the bottom that prevent that. Maybe the above user had his upside down !?!? The fixed tapered type will only work on ONE bore size - so for the money you better be doing a lot of the same builds!!
               
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              • yella71

                yella71 Well-Known Member

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                Get something good.....don't mess with Chinese junk
                 
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                • 33 IMP

                  33 IMP FBBO Gold Member FBBO Gold Member

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                  The one i use is a Lisle brand "wrinkle band" . It works well for me. It will do my straight eight bore, 3.25 , up to a big block chevy 4.600 . Inexpensive and very functional.
                   
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                  • Stanton

                    Stanton Well-Known Member

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                    In a pinch I have used a soup can and a pair of pliers. Luckily it was a Harley so I only had to do two slugs. It was Won Ton soup ... so Chinese stuff works fine !!
                     
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                    • wyrmrider

                      wyrmrider Well-Known Member

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                      What do you use on a W series motor?
                       
                    • 33 IMP

                      33 IMP FBBO Gold Member FBBO Gold Member

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                      I dont know for sure, but since the combustion chamber is in the cylinder , not the head, there is a relief, above where the rings reach, that allows a band compressor.

                      Did you know that ford has a block with the odd deck like a 409? Its called a mel, mercury-edsel-lincoln.
                       
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                      • 451Mopar

                        451Mopar Well-Known Member

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                        Sledge Hammer! I know what your saying about the bores not square to the deck, but never had to put pistons in?
                         
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                        • wyrmrider

                          wyrmrider Well-Known Member

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                          good answer
                          several motors like the 348-409-Z11
                          PITA
                          but to see Dino Don vs Hayden Proffit on Vogue tires was worth it
                           
                        • roadrunnerh

                          roadrunnerh Well-Known Member

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                        • 33 IMP

                          33 IMP FBBO Gold Member FBBO Gold Member

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                          You do realize that only works for standard bore pistons,not oversized, right?
                           
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                          • roadrunnerh

                            roadrunnerh Well-Known Member

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                            Yes. The block hasn't been bored.
                             
                          • Stanton

                            Stanton Well-Known Member

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                            Not the smartest purchase IMHO.
                             
                          • roadrunnerh

                            roadrunnerh Well-Known Member

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                            Why do you think that?
                             
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