omc riser flap

[horsefly38425]

had the manifold off my 3.0 liter and the flaper in the riser is burned on one side /half of it is gone it is just hanging there on one side. should i replace it / or just run it like it is?

 

[llerrad]

Re: omc riser flap

Replace immed. or you may end up with hydrolock and bust something in the engine.

 

[KaGee]

Re: omc riser flap

The flapper is there to protect against backwash possibly getting into the engine while at low idle or shut down.<br /><br />Ignoring it may or may not have any ramifications... if you're lucky. It could also work loose and cause an exhaust obstruction.<br /><br />Replace it while you have it apart.

 

[horsefly38425]

Re: omc riser flap

any idea what the part# is or where to find one? I looked on the parts link ,found gasket but can't find exhaust flaper

 

[KaGee]

Re: omc riser flap

What year??

 

[horsefly38425]

Re: omc riser flap

87/3.0liter/corba

 

[KaGee]

Re: omc riser flap

Look Here

 

[rybad]

Re: omc riser flap

check www.ebasicpower.com Then have good prices on flappers..

 

[horsefly38425]

Re: omc riser flap

got parts in, well some of them [ordered gasket set,only got manifold . place i got it from is sending the rest. The big ? is how does this flapper thing work ? my book shows no spring to hold it shut it just hangs in and flaps. I understand exhaust will keep it open, But what closes the darn thing? Also while I'am here i want to ck for the [rust vs shine] were i see lots of people get water back in the head. DO i ck at the end cap or elbow for this?

 

[horsefly38425]

Re: omc riser flap

still wonder how the flapper works. Does it shut all the water out or prevent a sudden rush of water from coming in /my new one does not still vary well.

 

[KaGee]

Re: omc riser flap

It's not a perfect seal... it keeps the rush out. The flapper should only swing 180* I believe.