Poor mans exhaust silencer

Poor mans exhaust silencer.


Note the 10" rubber elbow. Clamped on and the suspension bracket from the platform is also bolted to the 10" tube further capturing the elbow.
Holes in the side are for idle pressure relief. Rev 1 without the holes sprayed water everywhere. Now just a little spray out those holes. Next time I'll know not to drill holes to the outside and keep the docks dry.
The downward part of the 90 I cut off. You can just see a little leading lip and the back edge about 1 inch higher like a bow thruster tube brow.
Does a great job reducing noise and the 1000/1100 rpm howell. At speed, the elbows are out of the water just deflecting the noise down toward the water. No back pressure. At low speed, they just blub blub and we can talk in the back of the boat and to/from the dock.
Exhaust rubber, nothing sticks to them but some grass.

I was looking for 10" pvc to experiment with but found these at a surplus shop. If your exhaust is smaller, say 5 or 6", give that PCV idea a try and experiment before you plunge into the rubber exhaust part$.
Factory 10" exhaust tube came out to swim platform back edge. The back edge of the swim platform had 35 years of abuse, Rebuilt it and added another 18" to boot.
So this is a twofer, exhaust and bigger deck project.

You remember The Wizard of Oz movie, where the ScareCrow was singing;
If I only had a ,,,

Well, the stern does go down (it is the Bertram 58 hull), worse at the end of those tube extensions. Right when the resonance of the motors ring in the ears and drive me to drink (another good excuse).
Closer to a SF hull, I think they would work better.
Often wondered why Bertram put those tube extensions on the MYs.

I only had two elbows and in 10". I had a lot of after thoughts and you kids are there and thinking also.
So, Let me say, it works and any improvements are up to the next generation of poor kids with a exhaust noise issue and plan.
Keep us all up on the next generation of redneck exhaust.

It's not my feet getting wet, I'm driving das boot where it's dry.
Something like a plug is on the list,, near da bottom of da list ,, way down da list,, need a flashlight to read it.

Some call it pink, you may accept red, I called it SHRIMP and sticking to it.

I was experimenting with hard bottom paint on the running gear. The kids at Huckins has some white & some red Vivid and offered it to us. This pic was in November 2012. While diving under Josea the next summer off of Taloo Kay, most of it was intact. It's still SHRIMP, not pink.
Our diver reports this summer that most of it is gone now and he is cleaning the hardware as usual.
The Pettit Pro is still in great shape on the hull.

Well, I'm a lil taller, wider, heavier (I'm sure) and wish I was from Texas. And, YES, I think I'm 100% masculine until my wife wanted that light-ish red,,,, I mean SHRIMP paint that the kids mixed up on there.

Powder coating I had thought was baked on, like in an oven... Somebody can put a boat in an oven?

Here in south Georgia (N Florida with pine trees), the silt, sand, tannic, gators and manatees is hard on the running gear and it usually does not last long (the paint). I thought it was cool for the hard paint on the gear to last 8 months and 600 miles.
Last longer than that d$%m speed prop stuff.

I had thought about porcelain coatings but could not get any interest. Outboards and I/O drives I think are powder coated already somehow and hold up (with use and cleaning) pretty well. I'll have to think a lil more about your idea and see what I can experiment with, ya know these budget constraints I have to live with only allow so much past shrimp paint.
,rc