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ColinBarber

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Posts posted by ColinBarber

  1. I think everybody quotes flywheel figures because that's what the manufacturers give for their car specs. You want to know how much extra bhp you are over stock

    I wouldn't think there would be a 25% loss on a manual IS. 20% at most. Autos are less efficient which is around the 25% mark.

    Nearly every run you do will be slightly different. Air temp, engine temp, bonnet up or down and the actual dyno will give different results.

  2. The dyno measures at the wheels. On a manual you can then put it into neutral and the dyno will measure the resistance which is only from the drivetrain, calculate the % loss and add it to the initial figures. Not totally accurate but better than removing you engine and using an engine dyno! Autos are much harder to get an accurate reading as you cannot put them into neutral without damaging the box. Normally the drivetrain loss is guessed (around 25%) and input into the dyno for it to give you a flywheel figure.

  3. I think most of the 4.0 soarers have the reversing camera and tv screen. I think the 2.5TT is the way to go though. But test drive an MR2 T. Even just to elliminate it, you will always wonder otherwise.

  4. Not heard of this problem before.

    As for repairing it. It depends if the thing can be taken apart for a start. Should be able to do component testing against common devices (transistors, logic ICs etc) but if there is a problem with a custom chip or a programmable device then you wouldn't be able to get the replacement part. Worth a go though as it's an expensive device.

  5. For normal servicing work I would think you will only get people within a 30 mile radius. If people travel any more distance than that then any savings in servicing costs would be wasted on time and fuel. Will you be able to get enough customers within that radius especially since most Lexus cars on the road are company/leased owned and will use main dealers?

    It's only when you do specialist work, like TDi, that people will travel large distances. As there are more and more people modifying Lexus cars I think this is the area to look into.

  6. What changed to extende the life of the cam belt by another 37k?? was it the belt its self or was it other components resulting in less wear?

    The plugs are different which is why they go to 100K not 63K but I don't know about the belt, probably nothing. The service interval also changed from 9,000 to 10,000 miles. Every other manufacturer is extending the interval between services and so is Toyota.

    It was the same in 1993/1994. The service schedule changed from 6,000 to 9,000 miles with nothing changing on the car. One month they need servicing at 6,000 and then the next month they can go another 3,000 miles.

    In the US the cars have much shorter schedules but use the same parts.

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