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Thread: How Much Power Can A Type 3 Gearbox Handle?

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    How Much Power Can A Type 3 Gearbox Handle?

    Ok Gentlemen, I’ve had conflicting advice from some eminent gearbox reconditioning firms and I need a straw poll from the streets.

    I’m putting a 157Bhp highly tuned (and peaky) 1700 Crossflow into a 550Kg Caterham-alike kitcar. I ran a Type 3 box (from a Cortina MkII 1600 GT so it has nice close ratios) with a 110-120 Bhp Xflow no problem, but will it last under the power of the new engine?
    The box is as shown on this page:
    http://www.zetecinside.com/xr2/gearbox.htm

    2 of the gearbox firms reckon the box it will only handle 140-150Bhp tops.
    A 3rd firm reckons it should be OK up to 160-170 Bhp.

    What do you reckon, and what power have you put through a Type 3 box?

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    Re: How Much Power Can A Type 3 Gearbox Handle?

    I know someone who used a 150bhp Zetec through this gbox for several race seasons. The gbox went eventually, but it did really, really well to last this long- lot better than expected

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    Re: How Much Power Can A Type 3 Gearbox Handle?

    your car is pretty light, probably wont have much rear end grip and your engines torque wont be high so the gearbox should last a reasonable amount of time

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