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Markert Motor Works Dyno Thread (many inside)

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    Originally posted by JGood View Post
    Interesting. You'd think with today's precision manufacturing processes, there wouldn't be that much of a variance anymore. That's a 10% difference...
    BMW dyno's every car that leaves their production line - they reject the ones that are lower than spec, but some of them end up coming out higher. I bet ones that are significantly stronger stock are fairly rare though.

    weren't S54s hand built?
    Last edited by nando; 04-14-2016, 09:27 AM.
    Build thread

    Bimmerlabs

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      there aren't strong outliers, there are normal ones proabbly fit within a normal distribution of sorts, but there are weak ones which simply have issues with one of the many complex systems. alot can happen in a few years
      89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

      new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

      Comment


        Originally posted by nando View Post
        BMW dyno's every car that leaves their production line - they reject the ones that are lower than spec, but some of them end up coming out higher. I bet ones that are significantly stronger stock are fairly rare though.

        weren't S54s hand built?

        Originally posted by ForcedFirebird View Post
        Not uncommon at all, specially when you get into higher HP/L. Also, these engines aren't that "new" anymore, the s54 is what 17yrs old already, with the youngest ones at 8yrs or so? They might be a bit closer if they were all tested at low mileage.

        I was talking about the s65 dyno. But, yeah, points taken.
        Last edited by JGood; 04-14-2016, 04:12 PM.
        85 325e m60b44 6 speed / 89 535i
        e30 restoration and V8 swap
        24 Hours of Lemons e30 build

        Comment


          Few good updates
          4/19/16
          Tuned a schrick cam S52 track car. Has 3.5" MAF and 24lb injectors. Headers to stock midpipe. Running OBD1. Unnamed tuners off the shelf chip vs MMW dyno tuning :P


          Tuned a Turbo M50 E30 We OBD2 converted. running HX35 15psi tapering to 12 off WG spring, 140MLS 93oct. S50 cams


          Tuned another S54 E36. Stock plenum, ZM3 airbox, CPI headers, nice dual all the way back exhaust

          Check Us out on Facebook
          Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
          Full Product Line Tuning
          OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

          Comment


            Originally posted by 328ijunkie View Post
            Few good updates
            4/19/16
            Tuned a schrick cam S52 track car. Has 3.5" MAF and 24lb injectors. Headers to stock midpipe. Running OBD1. Unnamed tuners off the shelf chip vs MMW dyno tuning :P
            Is the stock midpipe (assuming E36) really that restrictive?
            I've heard of cam + header + supporting mods S52's hitting 280 to the wheels.

            Comment


              Originally posted by The Dark Side of Will View Post
              Is the stock midpipe (assuming E36) really that restrictive?
              I've heard of cam + header + supporting mods S52's hitting 280 to the wheels.
              Obd2 midpipes aren't too bad. OBD1 ones are shit.

              Check Us out on Facebook
              Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
              Full Product Line Tuning
              OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

              Comment


                Originally posted by 328ijunkie View Post
                Obd2 midpipes aren't too bad. OBD1 ones are shit.
                What makes you say that? Any pics to compare?

                also, What cams does that car have?
                Simon
                Current Cars:
                -1999 996.1 911 4/98 3.8L 6-Speed, 21st Century Beetle

                Make R3V Great Again -2020

                Comment


                  Originally posted by 2mAn View Post
                  What makes you say that? Any pics to compare?

                  also, What cams does that car have?


                  Note the necking down from 2-1-2 on the OBD1 pipe. That area chokes down to a very small diameter with a thick wall.
                  2017 Chevrolet SS, 6MT
                  95 M3/2/5 (S54 and Mk60 DSC, CARB legal, Build Thread)
                  98 M3/4/5 (stock)

                  Comment


                    Originally posted by 2mAn View Post
                    What makes you say that? Any pics to compare?

                    also, What cams does that car have?
                    Schrick street
                    Originally posted by Bimmerman325i View Post


                    Note the necking down from 2-1-2 on the OBD1 pipe. That area chokes down to a very small diameter with a thick wall.
                    Your pic is dead

                    Check Us out on Facebook
                    Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
                    Full Product Line Tuning
                    OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

                    Comment


                      Thanks for the pic and the answers. Im getting my game plan ready for a full exhaust system, and what I see is that the separate piping going into the cat makes a big difference.
                      Simon
                      Current Cars:
                      -1999 996.1 911 4/98 3.8L 6-Speed, 21st Century Beetle

                      Make R3V Great Again -2020

                      Comment


                        Originally posted by 328ijunkie View Post
                        Your pic is dead
                        Weird, I don't see a dead image.
                        2017 Chevrolet SS, 6MT
                        95 M3/2/5 (S54 and Mk60 DSC, CARB legal, Build Thread)
                        98 M3/4/5 (stock)

                        Comment


                          Look at the different location of the merge/crossover....IMO that's more important than pipe size. Then They split it again 8" later wtf its just a weird x-pipe in effect

                          A short length of small piping isnt as restrictive as people think
                          Last edited by digger; 09-10-2016, 07:36 PM.
                          89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                          new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

                          Comment


                            The location of the secondary merge appears to have a BIG effect on S54 power output.

                            Comment


                              Originally posted by The Dark Side of Will View Post
                              The location of the secondary merge appears to have a BIG effect on all inline6 power output.
                              fixed
                              89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                              new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

                              Comment


                                4/27/16
                                E46 M3 VF SC 6psi IC kit. VF Tuned vs Our retune. VF apparently doesnt see the need to alter factory vanos maps as well as overfueling like hell. Also BOV or something is freaking out up top. Boost falls off at ~7500.

                                Check Us out on Facebook
                                Needing a harness adapter or wiring help? Check it out: also have 24v motor mounts, E30 M3 covers and E36 ECU mounts!
                                Full Product Line Tuning
                                OBD2 Tuning Available! OBD2 E36, S54 Swap, S62 Swap, etc: tuning@MarkertMotorWorks.com Dyno Thread

                                Comment

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