Does 0,5" matter? :)

Mopar Exhaust Systems

  1. rumblefish360

    rumblefish360 Well-Known Member

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    You asked for the BTDT people?

    This is the deal.

    In the video above, the engine is plus 600hp. What the muffler test shows is the limitations of the muffler tested. The limitation of max HP. While it is strictly limited to that engine, installing the muffler that made, let’s just say 550hp, would show little improvement on a higher horsepower engine. So it is mostly valid.

    Anyone of those mufflers making over 500hp would suite your engine no matter the pipe size.

    What it comes down to is mostly personal factors of outside sound, inside sound & fitting the system in. All the mufflers used are short case mufflers. Longer case mufflers will be quieter.

    For my personal “Road bound DRIVER” vehicle I used the long case Dynomax Super Turbo muffler with tail pipes @ 2-1/2 inches. Also the power difference between the X & H pipe YOU will not ever feel on the top end.

    If your worried about ever last HP, then a short case muffler like the Hooker Max Flow or the similar Dyno Max@ 3 inches is what you want.

    Not overly concerned about max power but want to talk and listen to the radio, then the long case Dyno Max Super Turbo is your muffler. It is capable of the power you make.

    Been there done that!
     
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    • Charger Dana

      Charger Dana Well-Known Member

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      It’s easy to fall into the just-in-case mode and contingency build everything, and assume bigger is better. I have bb TTI headers, dynomax mufflers and x pipe exhaust 3” on my 67 Charger 383 4 speed (runs 13.7s at 104 mph but has run 12s). It installs like a dream, even by yourself, and 67 chargers are generally a pain over the rear axle - I am a huge fan of TTI! That’s said I’d put 2.5” in if I did it again. 1/4” clearance to tank, springs when not running is “okay”, but you get some banging until you completely remove all movement in the exhaust.

      I recommend 2.5”.
       
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      • Cranky

        Cranky Banned Staff Member FBBO Gold Member

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        No one runs straights? Man....and I think dadsbee was being a bit sarcastic with the back pressure comment lol

        Does anyone make 2 3/4" pipe? Might be an option for those with just a bit over 500 hp.....?
         
      • Wietse

        Wietse Well-Known Member

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        Previous exhaust was a 3" with 2 mufflers and 4"!! side pipes.
        Speaking loud....
         
      • moparedtn

        moparedtn Ed on the Ridge FBBO Gold Member

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        :eek: holy crap! Sewer pipes.... :)

        I like the DynoMax stuff also, even though those are glass packed. They're made well and I MUCH prefer
        their sound to that of the more generic Flowmasters.
        They remind me of the old Walker Red Line Z line of mufflers from long ago, so much so that I wonder
        if they're related somehow? Walker used to make some seriously good quality stuff and were a new car
        supplier for some vehicles for many a year.
         
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        • Wietse

          Wietse Well-Known Member

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          Yes sewer pipes.
          The drone was not nice.
          It sounded awesome though but too loud for cruising around.

          Walker still makes exhaust nowdays but all i've seen are like common, stock replacement exhausts.

          IMG_7782.JPG IMG_9055.jpg
           
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          • Yeahrightgreer

            Yeahrightgreer Well-Known Member

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            Woah those babies are nice! Yeah I image the drone down Main Street would get annoying after only a few minutes
             
          • 451Mopar

            451Mopar Well-Known Member

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            The '71 Charger has the TTI 3" H-pipe system with the Super turbo mufflers. It sounds good, and quieter than most other performance mufflers, but not quiet.

            There is also the difference between a nice mandrel bent exhaust system, and the common muffler shop systems with crimped bends.
            The Charger originally had a 3.5" exhaust system with race bullet mufflers, and turn downs before the axle. It sounded like open headers below 3,000 RPM, above that it was just a smoother open header sound. At idle it would set car alarms off just at idle.
            I got tired of the noise, and used the full length 3" mandrel bent system (TTI), and it made no difference in performance (when I was only running 12.50's), but was much quieter.
            I think the crimped bends on the 3.5" exhaust made the tubes flow worse than the 3" tubes.

            For my Coronet, I was not looking for maximum performance. Fitment and selection of quieter mufflers were a higher priority than the quickest ET.
             
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            • 33 IMP

              33 IMP Well-Known Member

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              I stand by my recommendation in post 15, but you asked for BTDT. The under chassis shot is my 62, built for the next combo, a 522 nitrous engine. 3 1/2 mandrel bent, in and out, 3 1/2 series 50 flowmasters, tailpipe s to the bumper. Best of 11.11, 122 with a 440.
              The other two: 3 1/2 in and out hooker aero chamber (less than half the price of the flowmasters) turndowns in front of the rear axle, made with leftover pipe pieces from the 62. In a nine second n/a small block car, but it was real light! And... 3" in n out magnaflow, hooked to fenderwell headers on my gasser opel, exit to the side, in front of the rear tires.
              Of the three, I like the flowmaster sound best, but i got used to the hookers, really liked them after a while, surprisingly mellow. The magnaflows are very quiet, straight thru, but very long. I'm gonna try the aeros on the opel.

              20200302_115948.jpg 20200302_121313.jpg
               
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              • Wietse

                Wietse Well-Known Member

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                The 2,5” TTI exhaust is in order!
                I am still working on the engine but once it is back in the car with the headers this bad boy can be bolted on.

                I had in mind to open the side pipes and install a layer of stainless mesh with some absorption material to get rid of the drone.
                But i also like the sound of these full systems, so a full set installed and call it done!

                Thx for the advises given here!
                 
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                • 68Moparmaniac

                  68Moparmaniac Well-Known Member

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                  Pictures_diskcopy 549.jpg
                  2 1/2 with X pipe, no regrets
                   
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                  • 451Mopar

                    451Mopar Well-Known Member

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                    I have the TTI X-pipe on the Convertible. I added flanges between the muffler and tailpipe to make it easy to drop the center section of the exhaust out for working on the transmission.
                     
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                    • 33 IMP

                      33 IMP Well-Known Member

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                      Me too. It's a real good idea.
                       
                    • Wietse

                      Wietse Well-Known Member

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                      Good idea, i will likely do this as well.
                      Once i got the engine back in i will go for a straight installation first.
                      But sounds like a good job for next winter.
                       
                    • hunt2elk

                      hunt2elk FBBO Gold Member FBBO Gold Member

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                      Band clamps are another solution for easy removal. I use them on all my old cars and have never had an issue.
                       
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                      • Wietse

                        Wietse Well-Known Member

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                        I had a Motordyne exhaust system on my 350Z which used these band clamps.
                        Works very easy indeed, specially for aligning the individual pipes.
                         
                      • rlem1977

                        rlem1977 Well-Known Member

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                        Late to the party here, but yes, can’t make as tight of a bend radius with larger pipe. Space gets consumed quickly.
                         
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                        • khryslerkid

                          khryslerkid FBBO Gold Member FBBO Gold Member

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                          I bought pieces from Summit and Jegs then welded up my own system. 2.5"
                          20170328_111123.jpg 20170317_124040.jpg 20170318_112334.jpg 20170405_231956.jpg 20170405_232039.jpg
                           
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                          • Wietse

                            Wietse Well-Known Member

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                            Looking good!
                            I had the same thought of making the exhaust system myself out of stainless steel, but the total price of all material required made me consider paying a bit more and just need to install it.
                            This SS exhaust material is seriously overpriced, if you find the right guy at the right place you would be able to find some cheaper source maybe.
                             
                          • khryslerkid

                            khryslerkid FBBO Gold Member FBBO Gold Member

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                            Stainless anything has always been expensive. What I hate is the different grades out there. Some have a lot of steel content and will rust. The stronger a magnet will stick to it the more steel is in it.

                            You'll like your choice :thumbsup:
                             
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