Bravo 454 water shutter?

[Merdoc]

Where are the water shutters (Flappers) on my 1988 454 bravo Mercruiser (None in bellows) are they in the riasers or lower y pipe 1or2?<br />Thank you, Merdoc

 

[Bondo]

Re: Bravo 454 water shutter?

They're found at the Top of the Y-pipe........<br />1 each side........