Why wet exhaust

[Blackmagic94]

what is the need to have wet exhaust on a jet or v drive with an open engine bay?

 

[Ragged Edge]

Noise, wet exhaust produces slightly lower decibels and of course there's the heat thing. Wet headers don't burn as bad when you accidentally rub up against them.

 

[ONE-A-DAY]

It’s quieter

 

[Blackmagic94]

Noise, wet exhaust produces slightly lower decibels and of course there's the heat thing. Wet headers don't burn as bad when you accidentally rub up against them.

I get the dB and the heat. But none of that is critical like an in enclosed engine bay imo. Seems like issues of rust don’t outweigh the benefit on this application

 

[cofooter]

Will save passengers in the back from getting scarred for life if they brush up against them!

 

[monkeyswrench]

In an enclosed space you should run jacketed to keep the heat down. Wires, resin and all the other flammable stuff, as well as passengers, will appreciate it.

 

[ka0tyk]

By law water needs to be present in the exhaust on some lakes. Dry headers are frowned upon.

 

[ka0tyk]

Will save passengers in the back from getting scarred for life if they brush up against them!

My wife learned the hard way. Lost her balance and sat on them. Had a few weeks of blistering and sulfur bandages.

 

[TrollerDave]

ceramic coating is supposed to help with heat. I believe some places, like Embee in Costa Mesa, coat both inside and out.
You can run a ball valve up to the drivers seat so you can control the flow and shut it off if you wanted to. I think some do this to run dry headers when racing.

 

[ONE-A-DAY]

I had a valve under my seat on my jet boat that I could shut the water off when I wanted to or turn it on when passing cops.

 

[cofooter]

My wife learned the hard way. Lost her balance and sat on them. Had a few weeks of blistering and sulfur bandages.

View attachment 775107

Ouch

 

[Blackmagic94]

Of course there is the whole reversion issues as well.

AZ has no such rule

 

[81Sprint]

When i had my Sprint, i ran dry mainly because the water made such a mess on the transom, but the headers were cut down

 

[BlowMe]

When i had my Sprint, i ran dry mainly because the water made such a mess on the transom, but the headers were cut down View attachment 775162

Gorgeous boat. And the water helps to keep the headers from bluing due to all the heat

 

[ToMorrow44]

Seems like issues of rust don’t outweigh the benefit on this application

Should be no issue with rust if running a stainless header anyway. Not sure what material header Jet bote guys are running

 

[GRADS]

I dry piped my twin engine Daytona with 525’s and it was loud as fuck. Totally rad.

 

[was thatguy]

Mine has a 4 position valve by the driver as well as the Basset check valve.
You can clearly hear the difference between the settings when you move the valve while under way.

I always run water under way.
Its quieter, and saves the chrome on the $1200 headers.
I just click the valve to off as I slow down and idle around.

Oh, I had “Basset” seared onto my back for about a year after leaning into the logo stamp.
Fuck that hurt.

 

[MSum661]

My wife learned the hard way. Lost her balance and sat on them. Had a few weeks of blistering and sulfur bandages.

View attachment 775107

Damn, that Stings just looking at it. If you run dry sooner or later you will get bit. Even a small bite will take the wind out of ya!

 

[was thatguy]

Damn, that Stings just looking at it. If you run dry sooner or later you will get bit. Even a small bite will take the wind out of ya!

My headers actually started to blister the paint on the top of the transom when I ran them dry.

 

[81Sprint]

I eventually had mine ceramic coated at Embee, huge difference in heat

 

[ToMorrow44]

I dry piped my twin engine Daytona with 525’s and it was loud as fuck. Totally rad.

I have seen that video a bunch and thought “damn those 525s sound good!” Now I know why! They don’t all sound like that lol...

 

[Blackmagic94]

That exhaust has water coming out so how is that dry?

 

[GRADS]

That exhaust has water coming out so how is that dry?

Actually they are dry piped but I had Imco drill a tiny hole at the very end of the pipes so I could slip in the Gattlin mufflers when I went to Tahoe. The water you see is coming out of the little hole

 

[Bigbore500r]

Actually they are dry piped but I had Imco drill a tiny hole at the very end of the pipes so I could slip in the Gattlin mufflers when I went to Tahoe. The water you see is coming out of the little hole

So water is injected at the tip, or ?? You weren’t running the Merc tubular headers dry right? Just no water injection at the elbow ?

 

[GRADS]

So water is injected at the tip, or ?? You weren’t running the Merc tubular headers dry right? Just no water injection at the elbow ?

So the headers and tips were water jacketed and then there was a quarter sized hole in the bottom of the exhaust tips where the water exited. And then a tiny hole cut on the inside to slip the mufflers in an bolt them in. I’ll try and find a pic of the set up. All I know is that when it was dry piped it was deafening. I remember Kenny at eliminator saying are you sure you want to do that. Lol

 

[Bigbore500r]

So the headers and tips were water jacketed and then there was a quarter sized hole in the bottom of the exhaust tips where the water exited. And then a tiny hole cut on the inside to slip the mufflers in an bolt them in. I’ll try and find a pic of the set up. All I know is that when it was dry piped it was deafening. I remember Kenny at eliminator saying are you sure you want to do that. Lol

The headers were still water jacketed though right, and it just wasn’t mixing into the exhaust stream till the tip? Should have named it “just the tip”

 

[Blackmagic94]

So the headers and tips were water jacketed and then there was a quarter sized hole in the bottom of the exhaust tips where the water exited. And then a tiny hole cut on the inside to slip the mufflers in an bolt them in. I’ll try and find a pic of the set up. All I know is that when it was dry piped it was deafening. I remember Kenny at eliminator saying are you sure you want to do that. Lol

My stainless marine injects via multiple holes at the end of the tail pipes but there is still water going through the exhaust. To me a dry exhaust is a cry style. Zero water or water jackets.

 

[GRADS]

If you boat somewhere where noise is an issue do not dry pipe it. LOL

 

[GRADS]

My stainless marine injects via multiple holes at the end of the tail pipes but there is still water going through the exhaust. To me a dry exhaust is a cry style. Zero water or water jackets.

If you like headers that are blue and brown, go for it.LOL

 

[spectras only]

Water jacketed dry pipes like Stellings produce over 100 dB. We changed it out to aluminum risers on the ZZ572 in my buddy's boat, after marina complained

wet exhaust, we had Eddie marine made tall risers to combat reversion.

 

[rrrr]

Of course there is the whole reversion issues as well.

AZ has no such rule

Arizona does have noise level regulations for boats, and the law says all boats must comply with those.

One of the compliance methods acceptable to enforcement officials is wet exhaust, but it still must comply with stated dB levels.

Mufflers and Noise Level Limits

Vessel operators may not hear sound signals or voices if the
engine is not adequately muffled.

■ All vessel engines must be equipped with an efficient
muffler, underwater exhaust, or other effective muffling
device that prevents excessive or unusual noise.
■ A vessel operating on Arizona’s public waters must not
exceed any of the following noise levels:
• A noise level of 86 dBA when the sound level is measured
at 50 feet or more from the vessel
• For an engine manufactured before January 1, 1993, a
noise level of 90 dBA when the stationary sound level test
(SAE J-2005) is performed
• For an engine manufactured on or after January 1, 1993, a
noise level of 88 dBA when the stationary sound level test
(SAE J-2005) is performed
• A noise level of 75 dBA when the shoreline sound level test (SAE J-1079)is performed.



Texas requires wet exhaust or mufflers. No sound level limit is specified, and the statute implemented in 1975 (44 years ago) has not been changed since then. Fortunately my state's elected officials don't think the function of the legislature is to enact ever restrictive laws which tell you what you can't do.


§ 31.070. Exhaust Water Manifold; Muffler
A motorboat operating on the water of this state must have an exhaust water
manifold or a factory-type muffler installed on the engine.
Acts 1975, 64th Leg., p. 1405, ch. 545, § 1, eff. Sept. 1, 1975.

 

[Tank]

Go big or go home.

You have a cigarette. Make that jet as stupid as possible...fuck it

 

[Blackmagic94]

Go big or go home.

You have a cigarette. Make that jet as stupid as possible...fuck it

Exactly.

 

[guest hs]

I dry piped my twin engine Daytona with 525’s and it was loud as fuck. Totally rad.

Did you put a gas pedal in it too

 

[Bigbore500r]

Slap a pair of flowmasters on it

 

[Riodog]

I dry piped my twin engine Daytona with 525’s and it was loud as fuck. Totally rad.

Bet that's not the only thing you've dry piped! LOL
Rio

 

[RiverDave]

Will save passengers in the back from getting scarred for life if they brush up against them!

Most the kids I grew up with would disagree. Lol

I know plenty of guys with the Bassett tattoo

 

[poncho]

Most the kids I grew up with would disagree. Lol

I know plenty of guys with the Bassett tattoo

I have 3 Spent more than one afternoon standing in the water above the burn.

 

[HubbaHubbaLife]

I dry piped my twin engine Daytona with 525’s and it was loud as fuck. Totally rad.

That's Badass

 

[Blackmagic94]

Another question



How can you run a jet on a hose

 

[Dkahnjob]

Water jacketed dry pipes like Stellings produce over 100 dB. We changed it out to aluminum risers on the ZZ572 in my buddy's boat, after marina complained

wet exhaust, we had Eddie marine made tall risers to combat reversion.

What boat is that engine it? It looks really cool. Inquiring minds need to know.
More pictures please.
Dave

 

[spectras only]

Dave, I'd have to dig the thread up from the archives on the build. My buddy and I put this boat together, he built the hull from scratch, loosely based on his 33 Donzi. It's a one of, no mould saved. He named it 007.
Few years back he finished the installation of the jetted hot tub in the forward section, heated by propane.

 

[Dkahnjob]

Very interesting. Are those two jet drives? How does it handle with all the weight of the water up in the bow?
Nice workmanship.
dk

 

[spectras only]

Dave, the jacuzzi only filled up while the boat is at the dock. There's too much weight in the hold to move under power, the boat would submarine or rolled by the force of bow steer. Craig's boat has a single ZZ572 coupled to a Bravo 1X drive.
Only a large boat like the 42 Braginton with its jacuzzi at the stern can move under power while the tub is filled, women and all.
https://buy.antiqueboat.com/utilities/1987-42-ft-braginton-cruiser-275-000-875.html

my buddy Craig was a finishing carpenter working for Sovereign Yachts in Richmond BC when he layed up his 33 footer 007. You can find pictures of Status Quo he did the interior here https://www.fraseryachts.com/en/yacht/status-quo/
The interior of status quo is different now, all dark instead of the rich brown I saw when it was finished in 2008.
He also worked on Dennis Washington's Attessa III while she was extended.

 

[Dkahnjob]

What am I seeing on the white boat with the two glass engine hatches open, looks like twin jet drives?
Is that a different boat?

 

[spectras only]

I have to correct my info, since there are at least 7 Status Quo built. The one my friend worked on is the second 150 footer built and looks like this one that I remember what it looked like.
https://www.yachtworld.com/boat-content/2011/03/richmond-yachts-status-quo/

 

[spectras only]

What am I seeing on the white boat with the two glass engine hatches open, looks like twin jet drives?
Is that a different boat?

No, what you see is the tail pipes of the Stelling dry exhausts with flappers in them.
The fitting in the center above the s/s molding is the input for salt-away flushing since the boat is used as a commuter for him between the Mainland and Vancouver Island.

He painted the boat blue over the white gelcoat a few years later.

 

[572ext]

What am I seeing on the white boat with the two glass engine hatches open, looks like twin jet drives?
Is that a different boat?

I think those are the exhaust tips

 

[spectras only]

Those Stellings had cracking issues in the inner tubes at the flange, dousing cold water on valves dropping them into cylinders.We had one valve dropped and busted a piston. Luckily minor problem with the cylinder head. We quickly ditched the Stellings, replaced with the Eddie aluminum manifolds and tall S/S risers and the boat still runs the same engine since.

 

[gqchris]

Will save passengers in the back from getting scarred for life if they brush up against them!

My chrome headers would burn you with the engine off if we were sitting on the beach! Water didnt matter.

I ceramic coated them black, it helped a bit, but not much.