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-   -   Remove exhaust bellow because of vaccum (no y-pipe installed)?? (https://www.offshoreonly.com/forums/do-yourself-boating-budget/328640-remove-exhaust-bellow-because-vaccum-no-y-pipe-installed.html)

McNick 07-19-2015 05:57 AM

Remove exhaust bellow because of vaccum (no y-pipe installed)??
 
I have heard that vaccum can occur behind the propeller if you have the exhaust bellow on but have pluged the y-pipe, is this true and will it made any difference at all if I remove the bellow? Formula 271 Sr1 -93 with 454 magnum carb. 365 hp / Bravo 1.

Budman II 07-20-2015 11:37 AM


Originally Posted by McNick (Post 4331481)
I have heard that vaccum can occur behind the propeller if you have the exhaust bellow on but have pluged the y-pipe, is this true and will it made any difference at all if I remove the bellow? Formula 271 Sr1 -93 with 454 magnum carb. 365 hp / Bravo 1.

I used to have silent choice, now have the Y-pipes capped with the exhaust bellows installed, and have not seen any cavitation issues that I am aware of.


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