What i meant was age as in use/abuse and poor maintenance in the life of the engine. Rather than they are old so falling apart if that makes sense. At 16 years old it would be a struggle to know if it was cared for all its life. Revs do tend to kill them, above stock rpm 7200+ it was common to chuck arp bolts in the clios. This had a lower limit of 7000. Personally i have ran 7650 on stock engine and valve train with just ITBs fitted. The supercharged one ran to 7400 i think and that was on 100k and all original parts. win some you loose some.
