Originally Posted by dave_y

always wondered what neighbours must think when you are running in a cam. RS Turbos are usually plenty loud enough at idle let alone at 2krpm for 20 mins lol

Originally Posted by B16CVH

I have know a few people who have built N/A cvh`s and when running gave a top end rattle but only when it was slighlty warm to hot. After weeks of faffing about, it was discovered that the pistons being rough cast on the crown had a little more meat than normal. As the piston heated and expanded it was kissing the combustion chamber, this sounded identical to a noisey cam