My Land Rover Defender 90 Td5 has plenty of power through the gears but seems to run out of gears. Did Land Rover make two types of gear box with different ratios or would an overdrive be the solution? If so do you have any experience of types to consider or avoid?
(PS I am in high ratio)
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Fairey used to make a bolt-on overdrive for the old 1/2/3 Series. I don't know whether this continues for the later models.
It was a fairly easy DIY fit, and gave a very useful step-down in ratio.
They were quite unlike the normal Laycock overdrives fitted to cars, which were epicyclic and activated by internal oil pressure via a simple switch on the gear knob or dashboard.
Land Rover overdrives were complete mini-gearboxes, with helical gears and ordinary synchromesh. They worked in all gears, high or low ratio, even reverse, so gave a theoretical 16 forward speeds and 4 reverse. It was necessary to declutch when operating, unlike the ordinary Laycock which is just a flick of an electric switch.
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check the tyre size matches the gearbox /axles as some should/can be fitted with oversize tyres ,if you post up your tyre size I will try to help with alternatives.
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