flapper valve question

[tboss]

I have a 1986 c/c with a alpha1 O/D on a 350 engine can some one tell me where the flappers are located in the exaust are they up high close to the manafolds or down low at the bottom of the exaust where it goew thru the gimble assy. I want to check mine but need to know where to start. tks terry

 

[Bondo]

Re: flapper valve question

Ayuh,...

In your boat, they should be mounted in the Top of the Y-pipe....

 

[tboss]

Re: flapper valve question

tks bond-o I will check there

 

[Keithowsley]

Re: flapper valve question

tks bond-o I will check there

I have a alpha 1 gen 1. On my mercruiser 470
And I replace the gimbal bearing and bellows and water impeller pump and reassembled
I noticed some talk about a flapper valve
Is there one one my boat and if so where is it?