1998 uses a chain... earlier versions use a belt.
Prizm's had a timing belt up until 1998 when they then switched to a timing chain.
Its a non interferance engine and they rarely need to be changed
I can't say for sure, but I have a 2001 Prizm and called some mechanics to look into having the belt changed, and they told me I didn't need to because it has a chain. According to the repair manual from 1993 through 1997 the Prizm used a timing belt and was an interference engine. From 1998 until end of production the Prizm used a timing chain. same with its mechanical twin, the Toyota corolla.
Timing chain
1998 i30 has timing chain. just confirmed from my dealer.
It has a belt that should be replaced every 105,000 miles.
chain
It has a timing chain and gears.
It uses a timing chain
A timing CHAIN
Normally a timing chain will last the life of the engine and is replaced during a complete engine rebuild. No maintenance is normally required.
it has a timing chain it has a timing chain