above waterline exhaust question

[Benny1963]

thinkin of useing bobs machine weld on exhaust that fits on mid that has the plugs to quite if needed ,article says works well with stock motors ,
mine is a 1983 evinrude crossflow 175 with boysens and xp heads and some jetting for the boysens anyone know anything about them hadley /bullett ?

 

[JB]

Re: above waterline exhaust question

Changing the backpressure would almost certainly require carb changes, Benny.

 

[Benny1963]

Re: above waterline exhaust question

thank ya jb

 

[Dhadley]

Re: above waterline exhaust question

An open exhaust works well if you like loud. An open exhaust is only one part of a performance mod and the hull would have to respond well to minor torque increases. Many times just opening the exhaust without the other mods on a boat like yours slows it down.

The Bob's snout doesn't really un-restrict the exhaust, it still has too many curves. It'll let noise out but doesn't do much for flow.

 

[Benny1963]

Re: above waterline exhaust question

thanks dhadley yes doesnt make much sense without other mods
i think the crossflow will be left alone ,and kept quite .
im gonna get a looper 93 up or merc depends on what hull i can get
want a hydro and looper

 

[Dhadley]

Re: above waterline exhaust question

Just a thought - if you're just venturing into hi-performance land, consider a Hydrostream. Fairly fast, easy to drive and very forgiving.