Quote Originally Posted by spambam88 View Post
Could be the Transmission bearings, i know my Del Sol used to sound abit similar to yours. Ended up being the Counter shaft bearing.
From what i understand (which is really little) if it was the engine block it self wouldn't there be alot of smoke ???
Bit hard to tell from that recording. Alloy engines are hard to pinpoint where noises are coming from. I've recently replaced the water pump on my D16A8 and timing belt tensioner pulley because I realised the noise was coming from that end of the engine (made the whole thing sound like a bucket of bolts rattling around inside). Water pump bearing in particular was as rough as guts, wonder it hadn't siezed or shattered.