Where to Drill exhaust mod mercury outboard.

[gotomgo]

I've seen this topic covered a million times but have never seen a pic of one. not looking for performance just noise. Where exactly do I drill my lower unit to let some exhaust exit ? To make it louder . I'm not gonna go crazy and swiss cheese it just few small holes. It's a Merc 2.5L black max 175 . I only go on the Chesapeake Bay no rivers no lakes etc... So noise is no problem.i can tap and thread the holes as well if I don't like it. I also have a spare lower .please post a pic of where Exactly to drill. I'm not talking about taking the power head off and drilling the can etc... Talking about quick and easy drill the lower

[spareparts]

you don't drill the lower, you drill the mid section, to do it right, you remove the powerhead, exhaust adapter, and the exhaust can. leave the can out, drill 6 1/2 holes from the top thru the bottom of the mid, exiting just above teh anti ventilation plate. Search on screamandfly.com for a detail write up. Heres a picture from the top
https://www.google.com/search?q=merc...d1GlKjM:&vet=1

[gotomgo]

There's another method.thr "idle relief mod" it can be done you drill through the lower. I've read a bunch of forums talking about it. Some one always says it can't be done and then 20 people say it can be done.

[gotomgo]

Also they sell a cover (Bob's). U drill it put the cover over it. The cover has plugs so u can tune or quiet it.i just need to know where to drill it

[spareparts]

you still need to pull the can

[gotomgo]

Well I got screwed. My new to me motor is junk ..has a cracked case hidden by permatex. Runs like crap and spits water out side of block....