My mk2 Rally car - Duratec power

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  • JonSegger
    Mechanic
    • Jan 2004
    • 513

    Re: My mk2 Rally car - Duratec power

    Originally posted by rallyrob
    Okay, thanks. What does it rev to about 7500-8000rpm?
    Yep. I think rev limiter is 8000 rpm. (I did notice last time out that the shift light wasn't working, but that it set at 7200, I believe).

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    • rallyrob
      Racer
      Decade Plus User
      Turbosport Subscriber
      • Apr 2010
      • 2697

      Re: My mk2 Rally car - Duratec power

      Originally posted by JonSegger
      Cheers.

      It's a 4.6 now. (It was originally a 5.1, but that was too low geared.) It's on 15" wheels at the moment too, which gears it up a little for the long Snetterton straights.

      Okay. Even with it revving to 8000, the 15" wheels must definitely help it on the straights too.

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      • JonSegger
        Mechanic
        • Jan 2004
        • 513

        Re: My mk2 Rally car - Duratec power

        Originally posted by rallyrob
        Okay. Even with it revving to 8000, the 15" wheels must definitely help it on the straights too.
        Yes, for sure, definitely helps. Worth mentioning that it has a Quaife 60G too, which did have a tall 1st gear when I originally bought the gearbox (2.057). I subsequently swapped the diff from a 5.1 to a 4.6 diff and, combined with 15" wheels, it was a struggle to pull away in 1st and putting a lot of strain on the clutch. I had the gearbox serviced recently and changed 1st gear to a 2.4 ratio instead. It is much better now.

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        • Forest_rallying
          Racer
          Decade Plus User
          • Feb 2013
          • 2445

          Re: My mk2 Rally car - Duratec power

          I have an Escort with a little 2.0 Pinto fitted and I have the same diff ratio and 15 inch like yours Jon. It’s fitted with a Quaife type 9 gearbox fitted with a 2.01 first and Race ratios and despite me making the engine more tractable I feel first gear’s just about acceptable on the flat but too tall to set off on a hill. The engines fitted with a sintred clutch plate which also doesn’t help things either on take off. I had a spare std type 9 so I have decided to fit that with a Tracsport kit with a 2.48 first gear and give that a try.

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          • JonSegger
            Mechanic
            • Jan 2004
            • 513

            Re: My mk2 Rally car - Duratec power

            Originally posted by Forest_rallying
            I have an Escort with a little 2.0 Pinto fitted and I have the same diff ratio and 15 inch like yours Jon. It’s fitted with a Quaife type 9 gearbox fitted with a 2.01 first and Race ratios and despite me making the engine more tractable I feel first gear’s just about acceptable on the flat but too tall to set off on a hill. The engines fitted with a sintred clutch plate which also doesn’t help things either on take off. I had a spare std type 9 so I have decided to fit that with a Tracsport kit with a 2.48 first gear and give that a try.
            Yes, I checked the clutch when I took the gearbox out to get it serviced and the 1st gear ratio changed. There were cracks in both plates and the cover had broken - so I had to replace the clutch too. I assume that 1st gear being too tall was putting extra strain on the clutch. It was the same as you described - just about able to pull away on flat ground, but any sort of a hill start just didn't feel good. Much better now with the higher ratio/lower gear.

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            • rallyrob
              Racer
              Decade Plus User
              Turbosport Subscriber
              • Apr 2010
              • 2697

              Re: My mk2 Rally car - Duratec power

              Blimey, yea that clutch was bad, wasn't it!

              Comment

              • JonSegger
                Mechanic
                • Jan 2004
                • 513

                Re: My mk2 Rally car - Duratec power

                Originally posted by rallyrob
                Blimey, yea that clutch was bad, wasn't it!
                Yep. A good job I got to it when I did I think. That cover would have done a lot of damage if it had properly let go.

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                • Miniliteman
                  Pole Position
                  Decade Plus User
                  Turbosport Administrator
                  • Feb 2004
                  • 4963

                  Re: My mk2 Rally car - Duratec power

                  If it's a rally car why not fit a cerametallic clutch?

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                  • JonSegger
                    Mechanic
                    • Jan 2004
                    • 513

                    Re: My mk2 Rally car - Duratec power

                    Originally posted by Miniliteman
                    If it's a rally car why not fit a cerametallic clutch?
                    That's what it is - twin plate cerametallic. I went for this one (and the associated cover): https://cbradleymotorsport.co.uk/pro...-1x23t-x-5-6mm
                    Last edited by JonSegger; 10-01-2024, 14:55.

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                    • rallyrob
                      Racer
                      Decade Plus User
                      Turbosport Subscriber
                      • Apr 2010
                      • 2697

                      Re: My mk2 Rally car - Duratec power

                      Originally posted by JonSegger
                      That's what it is - twin plate cerametallic. I went for this one (and the associated cover): https://cbradleymotorsport.co.uk/pro...-1x23t-x-5-6mm
                      I know there's probably no warranty as such but I might inclined in send photos of that directly to ttv. I suppose it's been in the car a fair while though hasn't it.

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                      • JonSegger
                        Mechanic
                        • Jan 2004
                        • 513

                        Re: My mk2 Rally car - Duratec power

                        Originally posted by rallyrob
                        I know there's probably no warranty as such but I might inclined in send photos of that directly to ttv. I suppose it's been in the car a fair while though hasn't it.
                        That's the new one. The old one was AP plates and a Helix cover.

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                        • Miniliteman
                          Pole Position
                          Decade Plus User
                          Turbosport Administrator
                          • Feb 2004
                          • 4963

                          Re: My mk2 Rally car - Duratec power

                          Originally posted by rallyrob
                          I know there's probably no warranty as such but I might inclined in send photos of that directly to ttv. I suppose it's been in the car a fair while though hasn't it.
                          New one is a cerametallic clutch from TTV; old one is a sintered race clutch from AP.

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                          • rallyrob
                            Racer
                            Decade Plus User
                            Turbosport Subscriber
                            • Apr 2010
                            • 2697

                            Re: My mk2 Rally car - Duratec power

                            Originally posted by JonSegger
                            That's the new one. The old one was AP plates and a Helix cover.

                            My apologies, yes I should have looked at the photos better. I realise now it was the old one and the TTV is the new one.

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                            • JonSegger
                              Mechanic
                              • Jan 2004
                              • 513

                              Re: My mk2 Rally car - Duratec power

                              Originally posted by rallyrob
                              My apologies, yes I should have looked at the photos better. I realise now it was the old one and the TTV is the new one.
                              no worries. My fault, I didn’t actually explain it very well.

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