Escort Sigma 1600 Race Car

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  • Tristan
    Mechanic
    • Dec 2009
    • 632

    Re: It's a loud boy !!

    C'mon! Stop teasing us , what figures did it deliver?

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    • Roadsport
      Racer
      Decade Plus User
      • Dec 2008
      • 2106

      Re: It's a loud boy !!

      Originally posted by Tristan
      C'mon! Stop teasing us , what figures did it deliver?
      It did not deliver the figures I wanted so not satisfied with it yet.
      I'll try and get another RR session before the first outing to get more out of it.
      "Failure is always an option." - Adam Savage

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      • Roadsport
        Racer
        Decade Plus User
        • Dec 2008
        • 2106

        Re: It's a loud boy !!

        Another ten hours spent on the car today. We sorted the wheel alignement. And what a mess it was. Nothing was even close to where they were supposed to be. But I guess thats given when you change the xmember. I mainly went with the old set up only this time I wanted to get the up rights more up right. In other words lessen the caster. I had serious trouble keeping the car under control with "too" much caster in it. It was fine for about 6 laps and then my arms were really beat and that took a toll on my lap times. Also I think the excessive caster may have caused my Trak-lok LSD to slip under long fast turns. I know it sounds funny but so says the engineers hand book.And no one is wiser than an engineer. Too much caster adds body roll. If the Trak-Lok loses momentum it slips. Much like the Torsen type LSD's

        I also noticed earlier I had maxed out the travel in my vernier pulleys whilst doing the basic cam timing.No point in going on the rollers to try different cam timings if you really can't adjust the cams in the right directions. So I needed to jump the belt by one tooth and see where that leaves me.
        That worked for the inlet cam but the locking pin on the exhaust cam was originally put in the wrong position so I just could not get the exhaust cam timed in the way that I would still have a chance to further retard it.
        So, off came the pulley and new hole for the locking pin was needed. That did the trick. I was now able to measure the limits on how much is safe to retrard and advance the cams. I left 1,5mm between the piston and the inlet valve @ TDC. I believe that is enough.

        Also gave the engine its first oil change. Originally I poured in 9 litres of oil. Now it only took 7 ish litres. How am I supposed to get the old oil out of the return lines and the cooler
        Propably needs to be done in a more thorough service between seasons. The oil coming out was only a bit darker than the new oil. That's the nice thing in large oil capacity. The cost of the oil change is the not so nice part of it.

        As I allready braggedn on GrhamB's thread I got to give the car some beans today. The dealerships parking lot was temptingly empty. I could not resist to try how it goes on full throttle. Got to the cecond gear and ran out of parking lot. But MAN WAS IT WORTH IT
        I did two laps and the adrenalin rush, after two years absense, was so immense it took my legs
        several minutes to stop shaking
        The gear box worked fine. The gear changes (1 per lap around the lot) were precise and the clutch was light to use but had a nice feel to it.
        More of this coming up on Wednesday

        While working on my car we had some pleasant visitors. Lahti Historic rally took place this weekend and the scruteneers decided to open up Jari-Matti Latvalas Escort RS1800. At the very same garage. I felt like NOW im in a worthy company. Jari-Mattis engine was completely leagal and he's 2min victory was thus confirmed. I noticed it had a Tony Law exhaust but later found out it was no wonder. The engine was built in UK. Don't know by whom though.
        "Failure is always an option." - Adam Savage

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        • Tristan
          Mechanic
          • Dec 2009
          • 632

          Re: It's a loud boy !!

          Delighted to hear you got to drive it!

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          • Graham
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            • Feb 2006
            • 25214

            Re: It's a loud boy !!

            Also gave the engine its first oil change. Originally I poured in 9 litres of oil. Now it only took 7 ish litres. How am I supposed to get the old oil out of the return lines and the cooler
            you dont! but i figure with regular enough oil changes the remnants of oil oil wont matter because it gets so diluted with fresh oil
            sigpic
            https://www.facebook.com/penguinmotorslimited?ref=hl

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            • Roadsport
              Racer
              Decade Plus User
              • Dec 2008
              • 2106

              Re: It's a loud boy !!

              Thanks Tristan.Do you have the bottom end sorted yet?
              "Failure is always an option." - Adam Savage

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              • Roadsport
                Racer
                Decade Plus User
                • Dec 2008
                • 2106

                Re: It's a loud boy !!

                Originally posted by graham bahr
                you dont! but i figure with regular enough oil changes the remnants of oil oil wont matter because it gets so diluted with fresh oil
                I figured as much. Would have liked to get rid of all the oil used during the brake in. I guess I'll do another oil change soon.
                "Failure is always an option." - Adam Savage

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                • Graham
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                  • Feb 2006
                  • 25214

                  Re: It's a loud boy !!

                  i tend to change the oil after the engines rolling road then again after its first event
                  sigpic
                  https://www.facebook.com/penguinmotorslimited?ref=hl

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                  • Roadsport
                    Racer
                    Decade Plus User
                    • Dec 2008
                    • 2106

                    Re: It's a loud boy !!

                    Thats propably what needs to be done. I only have two event remainig this year. Plus some occasional practise/ testing track days for next year. After them I'll give the whole lubrication system a good clean up. I'm glad now I paid for the pace oil tank.
                    "Failure is always an option." - Adam Savage

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                    • Roadsport
                      Racer
                      Decade Plus User
                      • Dec 2008
                      • 2106

                      I'm ready

                      The car is now ready for the first race

                      I had a chance to take it out on a track last wednesday. We also went on to the rollers prior to the track sessiosn. Adjusting the cams did not further improve the figures. But the visit to the track showed its quite capable as it is. It pulled very well from the start all the way to the limiter at 9000Rpm's. Felt very fast on the corners and managed the same top speed on the main straight than my Pinto did. Emmidiately I was able to match the lap times I did in the race at 2008 at the same track.
                      Not bad at all for a first outing after two years absebse. Not to mention with all worn out two year old tyres. So the goal for the Race to come is to re write the personal track record.
                      I checked the wheel alignement again yesterday. I merely wanted to add negative camber since the car felt like it needed some. But much to my amazement all the caster and camber readings were way off.
                      And I had just set them up a week ago. I must have done some of the preliminary settings on the machine wrong so the readings were all wrong.
                      Now its all set up again and most propably will be even better to drive than it was the first time around. And to top it of I gave the old girl a round of brand new tyres.
                      I also weighted the axle weight of the car. With 10litres of petrol it was spot on 50/50 without me on board. With me in it it'll be a bit rear heavy. Which I was after.
                      The funny thing about weighting the car was that without the ballast weights the scale showed the car was only 20kg's lighter with this new spec
                      I estimated the Sigma to be aroun 40-50 kgs lighter than the pinto but I guess the dry sump and fuel injection and all the other bits have taken a toll on the weight savings. Well no harm done I'll just loose some of the ballast to make the minimum weight of 870kg's
                      But just to make sure I'll take it to another scale to make sure measuring one axle at a time isn't throwing the scales off.

                      So to wrap it up I belive the Engine build section of this thread is done. Untill the soon to become EVO II
                      "Failure is always an option." - Adam Savage

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                      • Graham
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                        • Feb 2006
                        • 25214

                        Re: I'm ready

                        its likely to be the dry sump which has really piled on the weight, the pumps weigh 5 or more times a std oil pump, plus all the extra plumbing etc etc
                        sigpic
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                        • Roadsport
                          Racer
                          Decade Plus User
                          • Dec 2008
                          • 2106

                          Re: I'm ready

                          Originally posted by graham bahr
                          its likely to be the dry sump which has really piled on the weight, the pumps weigh 5 or more times a std oil pump, plus all the extra plumbing etc etc
                          The pluming especially in my case as I have the oil tank in the boot. It has 9 metres of 3/4" rubber hose. And the 6 litres of extra oil compared to the Pinto.
                          Last edited by Roadsport; 15-08-2010, 21:18.
                          "Failure is always an option." - Adam Savage

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                          • Roadsport
                            Racer
                            Decade Plus User
                            • Dec 2008
                            • 2106

                            Re: I'm ready

                            Here's a link to the series I race in, available in englis too.



                            The next event is the Historic Grand Race
                            "Failure is always an option." - Adam Savage

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                            • Graham
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                              • Feb 2006
                              • 25214

                              Re: I'm ready

                              Originally posted by Roadsport
                              The pluming especially in my case as I have the oil tank in the boot. It has 9 metres of 3/4" rubber hose. And the 6 litres of extra oil compared to the Pinto.
                              thats one of many reasons why my oil tank is in the engine bay
                              sigpic
                              https://www.facebook.com/penguinmotorslimited?ref=hl

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                              • Roadsport
                                Racer
                                Decade Plus User
                                • Dec 2008
                                • 2106

                                Re: I'm ready

                                Is there a " I told you so" hidden in between the lines...
                                "Failure is always an option." - Adam Savage

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