My tips are covered by the swim platform as well. I too have the rubber flappers as well on the tips. The chance for reversion is greater depending on the cam you have, from what I understand. To me it is cheaper to replace the internals then to have a greater chance for reversion. I agree with kid on checking them. All I did was left the rubber flap and look down the exhaust or into. I found one was seized open and two others had cracks which caused the tick noise kid is talking about. So if you have the choice in my opinion, I would replace them.

I'm far from an expert but the flaps are to prevent water intrusion, not reversion. Reversion happens internally from valve overlap and/or water introduced into the system too early. The flaps just keep water from entering the engine through the exhaust pipe.

If you have external flaps there is no reason to also have internal flaps IMO.

Onesickpantera..... You are right. The word is intrusion... My mistake.

Anyways I removed my Tips today and began working on them. One thing to remember for the ones that are thinking about replacing them, I found out today that I will need a welder to re-install the new flappers. The current ones need to be drill out then the new ones re-installed and welded and then the welds grinded down to smooth. Just for others interested in doing this.

If your tips are made by corsa they have a lifetime warranty on all parts, call jeff 440.260.3145. Eddie marine will have a small fee. 909.945.2830. Corsa,s tips have dual flappers & eddies have a single butterfly.

They hassle you about being the original owner or not?

They never asked, so I wasnt telling

Just like you did with the military! Lol . On a serious note. That's for the contact number. I'm gonna trade mine in now!

Sorry no military for me, I was too much of a prick to have another yell at me all the time. & why keep flipping me off with the sausage fest behind you? No ass up at Higgins?