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If it could be bored any further I suspect Renault would have built the Sport 2 litre version with a bit bigger bore and a bit shorter stroke. With its already long stroke you wouldn't get any more bhp by stroking it even further, because you'd have to reduce the maximum revs. The F4R looks...

I've got the dyno figures that show changing the induction system does nothing but increase the noise level. I had the car dynoed, a Pipercross Viper fitted, then the car re-dynoed on the same dyno on the same day by the same operator. Yes there were small variations at different speeds, but...

Just got the car back from the dealer. The gearbox was pulled out and the totally-stuffed 5th gear synchro replaced, along with the noticeably weak synchros on 1st and 3rd, and I hope the 2nd and 4th gear synchros too because they came in the kit from France. The sensor thingy on the gearbox...

Got my car back. Weighed the spare wheel. Its 16.0 Kgs. That's a 15x7 wheel with a new 195/50 tyre. And, yes, timsclio172, with a manufacturing date of 10/03 it is absolutely definitely a Mk2 172 and the wheels that came on it are absolutely definitely 15".

Odd. I've got a Mk2 172 7x15 wheel I bent when I hit a pothole in the Northern Territory outback where there are no speeds limits. I put in on the scales. It weighs 8.0 Kgs. That's just the bare wheel. I'll weight the spare wheel with tyre when I get the Clio back from the dealer tomorrow...

Neil G I'd suggest its more likely that it closes that intake pipe off at low revs. Only opening both of them at higher revs when the engine needs lots of air and you don't mind the extra noise of a more direct intake. Doing that That would keep air speeds high in the intake pipe that's open...

I know about microprocessor-based computers, but I haven't been able to find anyone who speaks computer jargon who knows about the architecture of the Renault ECU, only people who speak Renault jargon. Tell me if I'm wrong but this is what I've concluded from what they've said. In a...

I thought a good idea would be to get a set of 21"/530mm diameter racing tyres for my occasional playing around out on the track. Sure, it would lower the gearing, but who actually gets up around 240 km/h on the track. The 20 km/h that smaller diameter tyres would knock off the theoretical top...

For any given displacement torque depends on how efficiently an engine can inhale air, how efficiently it can burn it, and how little of the resultant force it wastes. Power is simply torque times revs. So you can get more power by optimising your engine to produce power at a higher revs...

Someone else in another thread said he fitted 10 mm spacers - which would have the same effect as changing from a 48.5 mm to a 38.5 mm offset wheel - and it wrecked the handling. But the cup has 38.5 mm offset wheels, and presumably better handling. I understand (correct me if I'm wrong) that...

48.5 mm

Utter rubbish. Total nonsense. Double the weight and the power and you'll get exactly the same acceleration. You may be confused with speed and braking, where doubling the speed quadruples the distance it takes to stop. Acceleration/deceleration to distance is a square rule. Or with top...

Here in Australia the owners manuals we get say the belt has to be done at the 60,000 km (37,500 miles) service. Had an early Honda Civic. The cam-belt snapped. The piston came up and the valves were still down. They didn't fit. Honda decided to add belt replacement to the service schedule...

Got a Pipercross Viper and got a workshop that specialises in dynoing to fit it. They dynoed the car. Then fitted the Viper. Then re-dynoed the car. The power difference was too small to be measured. The only thing it produced more of was noise. Pipercross claimed it "must have been fitted...

How else than a turbo are they going to get the performance back with the b-i-g weight increase in the new model? Its gone from 1080 kilos to 1230 kilos. That's not far off the weight of the current Megane. Renault can extract a bit more power out of the 2 litre motor by tuning, but its alread...

Having trouble changing down was the first symptom I got. The next problem I got was it crunching changing up gears. Since it was happening on a 172 with only 20,000 miles on it I thought it must be the oil too. Renault looked at it and agreed to replace the synchros under warranty. They said...

As well as wiring wattage there the capacity of the switch and the fuse. Plus heat output. And ultraviolet output. High wattage globes generate more heat and are are OK in cars with big headlights. But Clio headlights are quite small. There's likely to be too much heat for the volume. there's...

My dealer checked the pads on my 172 when I got it serviced. It has done 36,000 kms - about 23,000 miles. On the basis of wear so far they'll last just short of 100,000 kms - about 60,000 miles.

I looked for a forum like this and joined up because I have the same problem, and I wanted to know if it was common and/or a known problem. Its a Clio Sport 172. Its only done 35,000 kms (a bit over 20,000 miles), and it hasn't been abused. Fifth gear synchro is weak. Renault are fixing it under...

Ignore this. I'm testing if it works. I tried once - first time - and it threw my reply away telling me I hadn't logged in, when I had.