Hopefully when you changed your car's timing set, you didn't toss the old gears and the chain. I almost did, but my wife showed me this: http://www.uncommongoods.com/product/auto-timing-chain-and-gears-wall-clock
$125 US plus shipping. Right.
So I decided to kludge this together for my brother's 40th birthday.
you don't need to weld a thing! Although I'm a welder, I like the idea of the gears and the chain suspending each other. Besides, if your car used a belt, you wouldn't be able to weld them, since the belt is made of rubber and twigs and cat pelts.