A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

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  • robt100
    Spanner Monkey
    • Nov 2008
    • 266

    Re: A race bmw 316, now S14 powered again!

    Would have thought Shocks would affect turn in and exit. and that bars and springs affect more mid corner Graham?

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    • Roadsport
      Racer
      Decade Plus User
      • Dec 2008
      • 2106

      Re: A race bmw 316, now S14 powered again!

      I tested a Whiteline 24mm ARB just last weekend in me mk1. I was impressed.
      And as for the weight, it serves a purpose. I would not change back to the thinner ARB. And almost every circuit car has too long front springs. Shorter = lighter. I halfed the lenght of mine when I went for stiffer ones with the new ARB. Still too long at 150mm
      "Failure is always an option." - Adam Savage

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      • Graham
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        • Feb 2006
        • 25214

        Re: A race bmw 316, now S14 powered again!

        yes and no, its not as black and white as one does one thing and and another does another, shocks are there to control the speed the suspension moves at, mid corner and exit is more about ultimate grip, turn in much more about how the car transfers weight. on a slick shod race car actual suspension movement is very little so you have to make huge shock adjustments to have any real effect, ive tried numerous geometry, shock settings and spring rates, but never really done much with the front arb so i'd be daft not to explore that avenue
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        • Graham
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          • Feb 2006
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          Re: A race bmw 316, now S14 powered again!

          Originally posted by Roadsport
          I tested a Whiteline 24mm ARB just last weekend in me mk1. I was impressed.
          And as for the weight, it serves a purpose. I would not change back to the thinner ARB. And almost every circuit car has too long front springs. Shorter = lighter. I halfed the lenght of mine when I went for stiffer ones with the new ARB. Still too long at 150mm
          lol! been there before, buying shorter springs of the same rate just to save weight, not sure how cost effective it is thou!
          and yes with the weight, if it makes the car faster then its the right move, the only downside is im not really going to be at the right circuit to judge the change, because i dont race much at snett and have never raced on the layout im on this weekend
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          • david_white
            Pole Position
            Decade Plus User
            • Nov 2004
            • 4831

            Re: A race bmw 316, now S14 powered again!

            Brake upgrade looks very neat, and definately a good move regardless of a little extra weight

            Sierra cosworth turbo race car
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            RETRO Motorsport

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            • Pushrod King
              Pole Position
              Decade Plus User
              • Feb 2006
              • 5028

              Re: A race bmw 316, now S14 powered again!

              Originally posted by david_white
              Brake upgrade looks very neat, and definately a good move regardless of a little extra weight
              Changing my front brake set up has made the biggest improvement on my car this year,luckily it also saved weight on my car....Are you going to be there this weekend DW?

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              • Roadsport
                Racer
                Decade Plus User
                • Dec 2008
                • 2106

                Re: A race bmw 316, now S14 powered again!

                Any of you lot tried alli wheel nuts yet? The price on them has gone down quite a bit so tempted but suspicious

                EDIT:
                I could start by shortening of the hugely too long studs though
                Last edited by Roadsport; 16-07-2012, 17:29.
                "Failure is always an option." - Adam Savage

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                • Graham
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                  • Feb 2006
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                  Re: A race bmw 316, now S14 powered again!

                  Originally posted by Roadsport
                  Any of you lot tried alli wheel nuts yet? The price on them has gone down quite a bit so tempted but suspicious
                  in the uk your not allowed to use anything other than steel wheel nuts
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                  • Roadsport
                    Racer
                    Decade Plus User
                    • Dec 2008
                    • 2106

                    Re: A race bmw 316, now S14 powered again!

                    Oh. Well no need to ponder that then. I still can though.
                    "Failure is always an option." - Adam Savage

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                    • Graham
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                      • Feb 2006
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                      Re: A race bmw 316, now S14 powered again!

                      well i just changed the prop coupling, to do so centre prop mount needs dropped, that has steel spacers to space it away from the body, after all this weight gaining couldnt put the steel ones back so knocked up alloy replacements saved all of about 18 grams in weight lol!
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                      • Roadsport
                        Racer
                        Decade Plus User
                        • Dec 2008
                        • 2106

                        Re: A race bmw 316, now S14 powered again!

                        Well hey everything counts!
                        Is the beemer close to minimum weight?
                        "Failure is always an option." - Adam Savage

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                        • caprimentle
                          World Champion
                          Decade Plus User
                          • Nov 2009
                          • 6623

                          Re: A race bmw 316, now S14 powered again!

                          Originally posted by Graham
                          after all this weight gaining couldnt put the steel ones back so knocked up alloy replacements saved all of about 18 grams in weight lol!
                          thats the spirit, every little helps, your'll be shaving your legs next and driving without socks on under your shoes

                          like the brake upgrade , i'm supprised the anti roll bars aren't bigger still for racing use though to be fair
                          its not dead till it's buried!
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                          • Graham
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                            • Feb 2006
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                            Re: A race bmw 316, now S14 powered again!

                            i'm supprised the anti roll bars aren't bigger still for racing use though to be fair
                            race cars generally have very little suspension movement and stiff springs so roll bars are not that stiff by comparison, more used to fine tune,

                            road cars need comparatively stiff roll bars to control body roll, if car manufactures used stiff springs the ride quality would be unacceptable

                            your'll be shaving your legs next
                            already do my head and my................
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                            • Graham
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                              • Feb 2006
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                              Re: A race bmw 316, now S14 powered again!

                              Originally posted by Roadsport
                              Well hey everything counts!
                              Is the beemer close to minimum weight?
                              nothing like it, im about 130kgs over it!, i could probably save 50kg with a careful build of a new car, going to split rims would save a bit. theres at least 15kg to come off me just need to cut down on the
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                              • Roadsport
                                Racer
                                Decade Plus User
                                • Dec 2008
                                • 2106

                                Re: A race bmw 316, now S14 powered again!

                                The cars are weighted with the driver?
                                "Failure is always an option." - Adam Savage

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