Where to Drill exhaust mod mercury outboard.

[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....

[spareparts]

thats not good, where is the water leaking? have you done a compression test? spark check?

[gotomgo]

No I have not. But there's permatex I. Random spots on crank caske right above where it bolts up to mid. And it's blowing water out there .the motor is surging and wont idle or do snyrhi g below a few thousand rpms. It's deffinetly sucking air. The guy I bought it from said he'll gimme my money back as long as I return the motor (3.5hrs away)so I'm removing it and semdj g it back up north