over water exhaust?

[serious3]

following on from my modding a 40 twin, i would like to hear my motor scream so i was thinking about modding the lower leg to make it an over water exhaust, would there be any reasons not to?

[Fast Fred]

most drill the foot, if you drill the mid you should run a weld around the hole so it won't crack.

[serious3]

eh? any pictures for referance? ( and some details on your damper set up! tried to pm you but your inbox is full!!)

[Mark75H]

Fred's advice is good. Cracks are possible, more than a few people have lost nice props and gearcases with cool sounding mids

[Fast Fred]

what you run for power? the dampener is straight forward, bolts to an ear added to the power head bolts, a bracket with an upright mount that pivots so she will tilt and not bind, bolted to the transom. works on anything

[serious3]

i'm running a yam/mariner 40 twin on a zapcat like yours!! she gets a bit tank slappy in the chop....is that a pro-comp damper on yours? i have a few small/med shock absorbers here i'll head in the workshop and have alook methinks!!

[Fast Fred]

i'd drill the foot on that one, there is a rib inside the foot, if you cut it down the exhaust will empty out the cavplate with no out side cuts, looks stock, sounds kick a$$, a shock is not goin to work make sure it's a Dampener , it kills all the pos neg input from the prop. how do you drive left handed ( reg) right handed ( not reg)

[88workcar]

following on from my modding a 40 twin, i would like to hear my motor scream so i was thinking about modding the lower leg to make it an over water exhaust, would there be any reasons not to?

Testing is best, most engines will loose bottom end power and gain a few rpm. My 3 cyl lost bottom and gained no rpm, the noise was too much for a long ride also. I found 5 complete powerheads for your engine. Big carbs and pistons on that one.

[serious3]

Testing is best, most engines will loose bottom end power and gain a few rpm. My 3 cyl lost bottom and gained no rpm, the noise was too much for a long ride also. I found 5 complete powerheads for your engine. Big carbs and pistons on that one.

did a long trip today and glad i didnt do the mod after all, how the heck do you "find" 5 complete 2cyl,40hp yamaha powerheads? oh and what do you mean by big carbs and pistons? me being a bit dumb an all that!!

[88workcar]

That motor has big ol carbs and big ol pistons compaired to a 3cyl 40. Carbs are big as a 90.