cam belt or timing belt

[dave]

These are both the same belt

good pratice is to change every 3 years or 36k miles if you dont have a safe engine

the 8v fire engines are the only ones that are safe in a punto.

how ever

"Introducing Dayco's New Mileage Warranty Program"
It just doesn’t make sense to spend hours tearing down a car’s engine to change a timing belt and then to discount the importance of inspecting the tensioners and pulleys that are incorporated into the timing belt system. Worn tensioners and/or idler pulleys often contribute to the excessive wear or failure of the belt. If this is the case, and these components are not replaced…the belt life of a newly replaced timing belt will be drastically reduced.

Dayco aftermarket timing belts and Dayco aftermarket timing belt tensioners and idler pulleys meet critical OE standards for fit, form and function. In fact, we’re so confident in the quality of our products and the credibility of our application engineering that we back this claim with our exclusive Dayco Mileage Warranty Program. This program ensures that, if during the same repair service, the timing belt along with worn timing belt tensioners and/or idler pulleys are replaced with a Dayco Timing Belt and Dayco Timing Belt Component Kit Tensioners and/or Idler Pulleys…Dayco will warrant both the belt and tensioner and/or idler pulleys for the life of the automotive manufacturer’s original recommended replacement interval. If no OEM timing belt replacement interval is recommended, then the typical trade practice of replacing the timing belt and components at 60,000 miles will apply. The warranty will become effective if the timing belt or any of components fail prior to the designated replacement interval. An invoice carrying the date of replacement, odometer reading at time of replacement and odometer reading at the time of failure will be required along with the failed timing belt and components.

Timing belts are designed both for applications in diesel and petrol engines, and are fitted both on motorcars and industrial vehicles.

With the use of new materials, the belts can be made in various structures and tooth profiles, to guarantee the performance of modern vehicles.

Nowadays, belts are subject to stresses and working conditions than seemed impossible only a few years ago:
High fuel injection pressure, which can reach up to 2000 bar in some applications.
Multi-valve engines: double camshaft with higher stresses
Engines with high power and operating temperatures over 120°C .

They should also guarantee:
Noise reduction.
Limited dimensional tolerances
Limited variation of the belt dimensions in operation
High resistance to cloth abrasion
Longer service life/mileage

Available structures:
Chloroprene: first generation belt, usually not subject to high stresses, such as temperatures over 70°C or high work loads.
HSN: structure characterised by its optimal resistance to high temperature up to 130°C and pulsing loads.
HT: the belt cloth is coated with a highly abrasion-resistant PTFE film, designed to reduce to a minimum the cloth wear on the lap and on the sides of the teeth. This structure guarantees the belt maximum service life on engines with high injection pressure. Available for TDI Audi and VW engines and on TDCi Ford, Dci Renault and JTDm Fiat. For some applications, a cloth is applied on the tooth back to compensate for and increase resistance to side wear.