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    Originally posted by SamE30e View Post
    Is there really that big of a difference between the M50NV and the M50 vanos? Is it safe to say M50 non vano's are capable of mid 14's?
    They don't have variable valve timing to give them low end torque, but they have hotter cams that help them pull up top. It's a noticeable difference from what I've seen. A buddy of mine swapped his m50NV for an m50tu, and on the highway in the upper RPM's, it didn't have as much power. This was verified with some side by side runs with my car, before and after.

    IMO, I'd think a non vanos could be faster in the 1/4. The only time you're out of the power band is when you launch, and e30 m50's have enough traction issues in 1st to not need more power at that point.

    Does anyone have a non-vanos dyno plot? I don't think I've ever seen one.
    85 325e m60b44 6 speed / 89 535i
    e30 restoration and V8 swap
    24 Hours of Lemons e30 build

    Comment


      I just rebuilt my M50 with arp studs and 19lbs injectors and am going to get a W.A.R chip and run the Miller 19lbs tune. I'm hoping for mid 14's at least.
      1985 325e 2.8 Turbo VEMS

      Comment


        Anybody run yet this spring/summer?

        Comment


          Originally posted by justin_l_ View Post
          Anybody run yet this spring/summer?
          I've been trying to get to the track now that I did m3 cams/software. Previous best was 14.4@94 with my chipped m50. Hoping for 14.2@97 or so now. Hopefully I can get to the track in the next few weeks.
          85 325e m60b44 6 speed / 89 535i
          e30 restoration and V8 swap
          24 Hours of Lemons e30 build

          Comment


            Not a 24v but fun to compare anyway. First time out with the car.

            m30b35/g260.6/s3.46/225 45 16 fk452 street tires.

            14.748 @ 97.275
            60ft was 2.130
            reaction (not that it matters) 0.220

            I'll go out again in a week or so and try again with different tires/suspension setup.
            Mtech1 v8 build thread - https://www.r3vlimited.com/board/sho...d.php?t=413205



            OEM v8 manual chip or dme - https://www.r3vlimited.com/board/sho....php?p=4938827

            Comment


              My M52B2.8 swap in '84 E30. Only mod is the M50 manifold.
              Has a CR dogleg box, and 4.1 LSD. 14.42 at 98.7 mph



              sigpic
              BumbleE30 M52 2.8i

              Comment


                Alright i hope to see some feed back on this..... Im not to sure on how good or not i ran.
                The car - 86 325es

                Mods-
                m50 Swap
                m20 325e trans
                m20 clutch and flywheel
                325e diff (2.93)
                Precision turbo 5862 billet wheel
                m50 100% stock no head studs or head gasket
                666 fab manifold
                small FMIC
                custom charge pipes
                3'' turbo back exhaust
                TRM Draw thru chip tune
                7-8psi around 290whp

                ET 1/4 mile 13.6 @106
                with street tires.
                I had no boost built up for the launch just dump the clutch and go, had wheel hop like a bitch

                I only did 2 laps down the track and im just learning how to launch the car....
                Last edited by skatebline; 09-14-2010, 10:51 AM.

                Comment


                  Originally posted by skatebline View Post
                  Alright i hope to see some feed back on this..... Im not to sure on how good or not i ran.
                  The car - 86 325es

                  Mods-
                  m50 Swap
                  m20 325e trans
                  m20 clutch and flywheel
                  325e diff (2.93)
                  Precision turbo 5862 billet wheel
                  m50 100% stock no head studs or head gasket
                  666 fab manifold
                  small FMIC
                  custom charge pipes
                  3'' turbo back exhaust
                  TRM Draw thru chip tune
                  7-8psi around 290whp

                  ET 1/4 mile 13.6 @106
                  with street tires.

                  I only did 2 laps down the track and im just learning how to launch the car....

                  Seems about right, trap speed looks pretty good, but obviously you weren't hooking up the greatest.

                  7-8psi gets you 290whp? That's nice. I'd love to turbo mine. I wonder what s50 cams would do for you...
                  85 325e m60b44 6 speed / 89 535i
                  e30 restoration and V8 swap
                  24 Hours of Lemons e30 build

                  Comment


                    Yeah i need to practice alot more on hookin that suker up.

                    Yeah i was wondering the same thing. i would like to put those in and see but if i take off the head im gunna do alot more work to the head like cams, springs, port polish, studs gasket and DR vanos.

                    but yeah 7psi got me 260whp on a base tune from TRM and then sent them the dyno number and got a chip back and they said they could see 280 or 290 to the wheels easily

                    Comment


                      Took the E30 2.8 out again, and went quicker:
                      sigpic
                      BumbleE30 M52 2.8i

                      Comment


                        Originally posted by JGood View Post
                        They don't have variable valve timing to give them low end torque, but they have hotter cams that help them pull up top. It's a noticeable difference from what I've seen. A buddy of mine swapped his m50NV for an m50tu, and on the highway in the upper RPM's, it didn't have as much power. This was verified with some side by side runs with my car, before and after.

                        IMO, I'd think a non vanos could be faster in the 1/4. The only time you're out of the power band is when you launch, and e30 m50's have enough traction issues in 1st to not need more power at that point.

                        Does anyone have a non-vanos dyno plot? I don't think I've ever seen one.
                        Here is my dyno graph.It's a m50 non vanos, 2851cc, 9.5 CR with ebay m50 turbo bottom mount manifold, crappy down pipe and stock m20 exhaust,this was used just to brake in the engine.The head has a little work done but nothing special.I had to advance the timing due to lower CR.The picture its not that clear,but the car made 187 Hp and 194 Torqe
                        Attached Files

                        Comment


                          Originally posted by IanS_in_Oz View Post
                          Has a CR dogleg box, and 4.1 LSD.
                          Jesus, you like your gearing short.
                          paint sucks

                          Comment


                            Originally posted by Wh33lhop View Post
                            Jesus, you like your gearing short.
                            Sorry, LSD has been changed to 3.46 now. Muchos betterer... :)
                            sigpic
                            BumbleE30 M52 2.8i

                            Comment


                              Originally posted by skatebline View Post
                              Alright i hope to see some feed back on this..... Im not to sure on how good or not i ran.
                              The car - 86 325es

                              Mods-
                              m50 Swap
                              m20 325e trans
                              m20 clutch and flywheel
                              325e diff (2.93)
                              Precision turbo 5862 billet wheel
                              m50 100% stock no head studs or head gasket
                              666 fab manifold
                              small FMIC
                              custom charge pipes
                              3'' turbo back exhaust
                              TRM Draw thru chip tune
                              7-8psi around 290whp

                              ET 1/4 mile 13.6 @106
                              with street tires.
                              I had no boost built up for the launch just dump the clutch and go, had wheel hop like a bitch

                              I only did 2 laps down the track and im just learning how to launch the car....
                              IMHO I think you should be able to get low 13's with some practice and break into the 12's with some sticky tires. What were you 60ft's?

                              Comment


                                Originally posted by justin_l_ View Post
                                IMHO I think you should be able to get low 13's with some practice and break into the 12's with some sticky tires. What were you 60ft's?
                                Yeah thats what i was hoping to do was just break 12's but now im going to barrow a friends set of stickys and im putting in a 3.93 m5 dif right as we speak. but the 60's were around 2.4

                                Comment

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