Exhaust Flapper?

aolsen

Cadet
Joined
Oct 14, 2008
Messages
12
I have a 2.3Ltr OMC I have been working and the flapper is missing what is the purpose of the Flapper?
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,088
Re: Exhaust Flapper?

Ayuh,...

It helps to keep Water from backwashing up the exhaust into the motor, causing Hydro-lock...
 

chiefalen

Captain
Joined
May 18, 2008
Messages
3,598
Re: Exhaust Flapper?

The real question is do you need it?

In my own inexpert opinion no.

When you come off plane and to a stop you should let the motor run in neutral for 2-4 minutes anyway. Always.

When you start the motor even warm 2-3 minutes run the boat in neutral, at least 1 minute. I know a minutes a long time, when your looking to move to another fishing spot, or the kids are water skiing and wake boarding.

When running water can't enter the riser.
 
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