Hey Cookie Malaysia, thanks for your help and info.

I work in Kuala Lumpur, but stay in Petaling Jaya too.
My handphone is 019-248 1387 if you would like to
reach me.

Wow, I better get the chain replaced soon as I can.
The rattling sound may well be due to the somewhat
loose chain hitting the cover as it rotates. I wonder
if it has eroded the inside of the cover already. I was
warned if the tensioner gives way, the chain might
fly off and punch a hole through the cover ! Sorry to
hear about your engine, was that what happened ?

I had bought a dual chain, plus tensioner, the two
sprockets, L-plate and gaskets for the timing cover
and oil sump some time ago. I note from Mildman's
website there's an oil seal in the timing cover too, so
will go get that as well.

Thanks for the help too, Tom210 and Mildman.