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  • diff upgrade

    I have finally found a 3.73 crown,wheel and pinion and LSD which fits the MC and at a brilliant price of $273 (£150ish) Bargain :!:

    'Yes sir, ofcourse we can ship to the UK, that will be $400 for shipping'

    Bugger :!:

    keep searching.

    but I guess even at £380 thats a cheap performance mod for a NA car
    Ex 'V3RY M - MCoupe track monster'
    New toys

    Porsche widebody project

    Cayenne Diesel

  • #2
    I have family in the US, If you tell me who is selling it I might bring it back

    Comment


    • #3
      Originally posted by khooni
      I have family in the US, If you tell me who is selling it I might bring it back
      you might look silly with a 45kg dif under your arm :shock:

      and I reckon the airline might want to charge you for another flight!
      Ex 'V3RY M - MCoupe track monster'
      New toys

      Porsche widebody project

      Cayenne Diesel

      Comment


      • #4
        thought I would revive this as I have ordered my 3.64 LSD

        will be delivered on wednesday and it is booked in to be fitted in 2 weeks.

        I have a sneaking suspicion that another member is going to beat me to it though :wink:
        Ex 'V3RY M - MCoupe track monster'
        New toys

        Porsche widebody project

        Cayenne Diesel

        Comment


        • #5
          Would be interested to here how much difference the new diff makes to the acceleration. Would also be good to know how much difference (worse I guess) it makes to your MPG on a long Motorway journey.
          Ex 99 Cosmos balck
          Now ZT 260 V8

          Comment


          • #6
            Originally posted by Lee
            I have a sneaking suspicion that another member is going to beat me to it though :wink:

            Hopefully be fitted by the weekend :twisted:
            Black S50

            Comment


            • #7
              Whats the standard diff ratio? I must admit it would be nice to have shorter intermediate gears by lowering the diff and making them closer together. Only concern would be top gear on motorway which boarders on being lowish already for this kind of car/engine.

              Comment


              • #8
                Originally posted by c_w
                Whats the standard diff ratio? I must admit it would be nice to have shorter intermediate gears by lowering the diff and making them closer together. Only concern would be top gear on motorway which boarders on being lowish already for this kind of car/engine.
                3.15

                check out this calculator... put in the final drive/diff ratio you want and it will give you the speeds/revs per gears

                you can change the tyre/wheel size also... is a good tool

                http://www.368s.com/tools_rpm.php

                Lee
                Ex 'V3RY M - MCoupe track monster'
                New toys

                Porsche widebody project

                Cayenne Diesel

                Comment


                • #9
                  Fitted my 3.46 multiplate LSd yesterday and am really pleased with the improvement 8)

                  The car now feels more urgent everywhere, especially 3rd-5th, almost as if the car has suddenly gained 30hp :twisted:

                  Also really pleased to report that it doesn't feel over revvy in top gear. 3000rpm in top gear was 71.5mph (Im running 265/35/18rears) and is now 65.5mph,a difference that i can honestly say hasn't changed the smoothness of the car at all 8)

                  Lee and i have spent a lot of time researching this swop and we decided that i would try the 3.46 ratio and Lee will try the 3.64(should be bonkers :twisted: )so we can evaluate the best ratio :idea:

                  The swop is reletively simple if you have a ramp and axle lift as it is mainly just unbolting and re bolting lots of bolts. It took me about 5 hours but having done it once rekon 4-4.5 hours is about right.

                  Once Lee has fitted his we will do some comparitive tests and post an article on it.
                  Black S50

                  Comment


                  • #10
                    Look forward to hearing the results. I am very interested in doing this upgrade. It makes more sense than trying to gain BHP improvements.

                    Comment


                    • #11
                      Originally posted by maahny
                      Look forward to hearing the results. I am very interested in doing this upgrade. It makes more sense than trying to gain BHP improvements.
                      They refer to the diff swop in the US as....'The poor mans supercharger' :wink:

                      Very true! 8)
                      Black S50

                      Comment


                      • #12
                        Originally posted by maahny
                        Look forward to hearing the results. I am very interested in doing this upgrade. It makes more sense than trying to gain BHP improvements.
                        They refer to the diff swop in the US as....'The poor mans supercharger' :wink:

                        Very true! 8)
                        Black S50

                        Comment


                        • #13
                          Mine is booked in for wednesday, I brought it forward as I was excited at Tonys results

                          well done Tony, see you this afternoon

                          Lee
                          Ex 'V3RY M - MCoupe track monster'
                          New toys

                          Porsche widebody project

                          Cayenne Diesel

                          Comment


                          • #14
                            More reliable too I bet

                            My friend spent a vast amount of money on tuning his e30 m3 (now has about 280BHP from NA 2.3 litre engine) and he said the diff upgrade was the best value.

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                            • #15
                              Originally posted by Lee
                              Mine is booked in for wednesday, I brought it forward as I was excited at Tonys results

                              Lee
                              Best i book off some time next weekend for a bit of back to back testing :wink: :twisted:
                              Black S50

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