Merkur XR4Ti ??

[alga]

Originally Posted by twinturbo

Type 9 will be fine in most applications, it has less weight to get moving than in a sierra so the strain on the box is significantly less.

Hmm, I think the strain on the gearbox depends on the power (torque * rotational speed) being transfered though it, not the weight being moved or anything else. The torque, though, is limited by the grip of the rear tyres, which is directly proportional to the weight on the rear axle. I wonder, what is the practical limit of torque/power that can be put down on the Roadster with semislick tyres like R888?

It has been discussed several times on here that 160-180 bhp is the limit for a Seven type car beyond where there are diminishing returns from extra power. Perhaps that is the limit of typical road tyres with the roadster's weight?