I have a rattle in the top of my engine, wanting some ideas of what it could be

It's there all the time, I can hear it more when I put my foot on the gas. It's really loud when the car is cold and isn't as noticable after driving for a while.

It could be my imagination but it seems worse with cheaper fuel (I usually run 98 RON PULP)

I thought that it could be timing issues, but my dad said that it sounded like valve/rocker clearances

It's going in for the 100,000 km service next week, it's a major one so they have to change the timing belt and tensioner spring.

Any Ideas?

i remember mine did that too...

probably cuz it was cold

they are really loud when its cold out...i'm sure it gets colder here in iowa than it does in oz.

It could be. It may be a lack of oil or oil pressure. If you can, give some more details

If you have an intake with a heat shield then that is it. Just move it up.