12/07/2004 |
C855 YVM - Robin Hood Exmo
The gearbox used is a simple Ford Type 9 (or Type N) 5-speed gearbox. This was found in various Ford models but the Capri was a popular favourite for the 5-speed. Note the Ford Sierra 5 speed is NOT a Type 9/N - the Sierra uses the MT75 gearbox which has an integral bell-housing and so cannot be used. The Type 9/N had a bolt-on bellhousing thus enabling us to remove the original Ford one and use an aftermarket bellhousing suitable for mating the Ford gearbox to the Rover engine. Okay, so we've got our engine. We've got our gearbox. We've got our bellhousing. Surely they don't just bolt up like that, do they?! That's far too easy! Well, actually, that's pretty much all there is to it. With the exception of the following... Firstly, in case you were wondering, our bellhousing let us keep the Rover starter motor. This in turn means we keep the Rover flywheel. So how do you mate the spline and clutch plate from a Ford gearbox to a Rover flywheel? The answer is simple - use a 6" clutch plate from a Ford Escort Mk.II or Capri. This was used in the 1600cc version of both cars and fits the flywheel exactly. Make sure you get the correct spline fitting for your gearbox - 23 splines (from memory... or was it 32?! Damn, I knew I should have written that down!!). There's only one thing outstanding - the thrust bearing for the end of the spline. This bearing is held into the Rover flywheel via a 3 bolt fixing; you will need to remove the standard Rover bearing and replace it with some sort of sleeve into which the end of the gearbox shaft can rest. I've heard mixed opinions on whether it's safe to just leave it out or cut the spline short. Personally I'd have thought it would be preferable to keep the shaft resting inside the bearing within the flywheel... we had a bearing made up already so we used it. I wouldn't be surprised if you could buy the part from Caterham if you don't have the facilities to make one. Since we were planning to tune our engine, we fitted an uprated rally clutch and pressure plate from Peter Lloyd Rallying. This should take the 190bhp no problems (the torque is what will really do the clutch an injury, and our high-revving K isn't going to be putting out a monstrous amount of torque, so all should be well).
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