stumped on rattle?
 

I just finished restoring a 2550 chaparral, and built the top end of the motor(454 bravo) The first time out i had an electrical problem which was fixed. the second time out, the buzzer came on from overheating. I shut it down right away and got towed back to shore. I replaced the raw water pump
(that was the problem) then started it with a hose hooked up. The temp is fine, the motor sounds good except a new rattle in the rear starboard side of the motor? It doesn't sound like it is coming from the valve cover. It is lower by the y pipe for exhaust, Maybe starter area. Im ready to throw in the towel!

Re: stumped on rattle?
 

Does it go away when you rev it up from idle??

If so, it is most likely the flappers in the exhaust.

Re: stumped on rattle?
 

it seems like it gets louder. When the motor overheated the starter got hot.
the starter drive got caught up on the flywheel for a second. Is it possible i broke a tooth off the flywheel and it is rattling around? the starter lookes hard to get at. How can I remove to inspect. I'm trying to go out on the boat tommorow.