Mercruiser Mercury Marine Exhaust Manifold Cooling System Petcock #shorts MIE 350 MAG MPI Ski Steve Bull shows us how to replace a corroded exhaust elbow on a Mercruiser, and throws in a few tips to help reduce engine mercruiser exhaust bellows zip tie install trick
Which muffler do you prefer? Marine Exhaust Flapper - Amazon.com Mercruiser Alpha One Gen Two exhaust flappers
Shop for all your boating needs at This video is a guided demonstration on how to install a Mercruiser exhaust manifolds STUCK on mercruiser engine.. how I removed it #marinerepair #boatrepair #manifolds
The flappers, aka Exhaust Water Shutters, are located in the exhaust y-pipe. The flappers help prevent water from running back into the engine. Hydrolock Boat Engine - How it can happen! Stupid flapper melted and made it all the way to the sterndrive. Tried looking for it with a camera scope but was not visible in the
Exhaust flapper needs to be replaced one of the screw holes is completely torn out They snap into place on the boat side and just float 60 second boat survey (Ep78): Bad engine manifolds and risers
mercury marine purpose and design of exhaust flappers 18-4457 2 Pcs Boat Exhaust Guard Covers with Stainless Steel Clamps Fit 4" OD Pipes Replace 50-28361 Mercruiser 12644A1 12644Q01. Exhaust flappers yes or no??? - The Hull Truth - Boating and Fishing
Everything you need to know to buy new exhaust parts for your MerCruiser engine! 0:00 MerCruiser exhaust buyers guide 0:22 8' Disney boat with a 25hp 2 stroke and a 70lb driver takes off a lot like a jetski lol
Wondering why your OMC/Volvo sounds like garbage? Your exhaust seal/flapper is probably stuck closed. It's not the end of the Volvo Penta issued a Technical Service Bulletin that recommends removing the exhaust flappers. They did research that found Hey Everyone, Today I go over a boat exhaust manifold and show how they work and how the water cools them. I cover all the
I got the broken exhaust flappers out of the bottom of the outdrive thinking that was the problem. But it's still doing this. Why do Boats Exhaust into the water? #boat #exhaust #wetexhaust #learn
Mercruiser 4.3L Exhaust Flapper Water Valve Replacement Mercruiser exhaust bellows 7 minute install trick In this video I am doing an inspection of the bellows on a boat with a Mercruiser Alpha One Gen 2 outdrive and 3.0 4 cylinder
Replacement Flappers - Hardin Marine mercruiser exhaust riser gaskets - which ones to use on which exhaust Corsa Marine exhaust diverter solonoid testing
BOAT ALPHA Gen 2 OUTDRIVE Exhaust Boot FIX ⚓️ What is wrong with the exhaust? Mercruiser Alpha One Gen 2 / 3.0
I rigged this to check and see if my exhaust manifold was bad. It bubbled like crazy. The other manifold was tested and no bubbles I discover my exhaust flappers are damaged. Subscribe the channel i will do a full video on the boat shortly.
Mercruiser? - This WILL Sink Your Boat (Part 1) Marine engineering team @AizuddinAbdullah1187. poor attemt at installing exhaust rises nearly causes boat fire.
Replace Mercruiser exhaust flaps the easy way,no riser removal #trending #viral Mercruiser 5.7 exhaust riser inspection
4in exhaust tips install Give your answer for below questions 1. The Loudest Muffler? 2. The Quietest Muffler? 3. The Best Performance Muffler? Wasn't a one and done
mercruiser 3.0L exhaust flapper replacement. How to make flappers stay put when installing them.
I own a 78 Bertram 35 with 3116 Cats. The boat has and always has had exhaust flappers on it. (I hate them) I have seen others without them with Exhaust flap not working good. OMC cobra thru-hull exhaust
Silverton 34C - Marine Chevy 5.7 Vortec Exhaust Manifold Replacement In this video I am prepping the exhaust system for installation. The main takeaway is that there could be melted exhaust flappers in
454 Mercruiser water reversion as seen thru clear 4" tubes running outside boat You'll most likely be fine. Don't let most of these people commenting scare you. The planets would have to align perfectly for any water to make Don't overheat the 6.2 Mercruiser 🔥exhaust shutter valve failure. ✅
Mercruiser overheat incorrectly installed exhaust system DANGER FIRE! Running boat without exhaust flapper?
8" Exhaust Flap | Downeast Boat Forum 7.4 Mercruiser Exhaust Water Reversion & Pooling
Wet exhaust tail pipe flappers…pros and cons? | Trawler Forum Mercruiser manifold test
How to replace an exhaust elbow on a Mercruiser inboard | My Boat DIY Made this video since I could not find any videos about replacing the flapper valve on the 4.3L Mercruiser engine. Sorry the video
Part 11A - Mercruiser 4.3 V6 Rebuild - Exhaust System Prep In this video I explain what flappers do. Volvo said you should not put them back in if they fall out. Mercruiser says you should.
Can I run the boat without an exhaust flapper? This particular engine is more than likely just pooling water inside exhaust and running back into the cylinder.
FnF 161 - Boat 016 - Volvo Penta 270 Exhaust Flapper Replacement - 1982 Citation Sprint Open Exhaust or closed Exhaust for my Mercruiser boat! FnF161200205 - Boat 016 - Volvo Penta 270 Exhaust Flapper Replacement - 1982 Citation Sprint.
Replacing Mercruser updated exhaust flappers Parts showed up just before the holiday weekend, so let's try and make this boat stop leaking! The old rubber coupler (lower 3")
Testing 2.5, 3.0 Mercruiser marine exhaust manifold for cracks. OMC, Volvo too. The working principle of the four commonly used check valves #valve Captain We built a 8" flapper and hinge of cast bronze. The mounting block was thru bolted onto a 8" Buck Algonquin transom fitting. You could
Does your exhaust bellows keep slipping off on your MerCruiser Alpha One Gen II from the outdrive? I attempted the install 15 454 Mercruiser water reversion as seen thru clear 4" tubes running outside boat Shows why exhaust shutters are soo0000o
August 24, 2025 94' Rinker Mercruiser 3.0LX - Exhaust Leak Fix Testing the CORSA Performance Marine Exhaust Diverter Valves, Solenoids and Harness off boat. Problem was fixed by taking
Reinstalled Exhaust Riser, Boot & Flapper on 1987 Bayliner Cobra 2250 OMC 5.7 V8 Boat Flappers Explained / What do & Why do I need Flappers
OMC Cobra Volvo Penta SX Exhaust Seal Flapper Damaged/Stuck Eddie Marine is Southern California's premium billet aluminum manufacturer to help you create the custom boat you have always wanted. Today we took apart the exhaust riser to inspect them before the Boating season of any rust. They are the typical inboard outboard
Boat is taking on water - Our failed leaking bellows Exhaust flapper | Boat Repair Forum
Open or closed exhaust diverters for my boat , loud or quiet is always cool, some lakes you have to have underwater exhaust! Prevent hydrolocking your boat engine with these boat launch tips and boat ramp tips. If you have a sterndrive engine (an inboard
Part 11B - Mercruiser 4.3 V6 Rebuild - Volvo Penta Exhaust Flapper TSB Repair Links Below: Petcock Failure of the MIE 350 MAG MPI Ski as I get ready to launch my boat! Mercruiser / Mercury Inboard Engine
They can stick open and flood your engine. If I were repowering I would certainly install a high enough riser loop, minimum 12”. But for an existing How to Install a Mercruiser Dry Joint Exhaust Manifold
MerCruiser Exhaust Buyers Guide 1986-2009 - Powerboatsupply.com Marine Exhaust Manifolds. How Do They Work?
Mercruiser Water Flapper Exhaust Shutter Replacement Install Exhaust Bellows on a MerCruiser Alpha One Gen 2 - Keep it from falling off Exhaust Tip Flappers
In this video, I demonstrate how Corsa Exhaust Diverters work on my 1995 5.7L Alpha One Gen 2 boat. These exhaust systems Hardin Marine has designed this easy to install effective slip on version of the popular "Silent-Seal"exhaust flap. No cutting or welding, this unit is designed 1. How to replace Mercruiser outdrive Bellows - (PART1) 2. How to remove alpha outdrive from
Those little shutter valves inside of your exhaust white pipe serve a purpose, especially on a boat that has the engine sitting quite The exhaust shutters keep water from entering the cylinder heads, it tends to bend connecting rods and can break your start nose cone. Hello all, Today we are going to be replacing the exhaust manifolds on my 2010 Marine Power 5.7 Small Block Chevy Vortec
mercruiser cooked engine by messing up exhaust gaskets open or closed cooling? This is a quick overview on how to replace the exhaust shutters on a Mercruiser inboard. Parts (Amazon Affiliates): Shutter OMC COBRA exhaust flapper - stuck in sterndrive. Now running engine with no flappers.
Findings and nuggets of knowledge from a typical boat marine survey. Today's episode: Warning signs for engine exhaust Corsa Marine Exhaust Diverters -- How Do They Work and What Do They Sound Like? The only thing you will notice is about 1 extra decibel of sound from the new style boot at idle.
How to install bellows on a Mercruiser I/O. Exhaust Flapper - HELP - Maintenance, Tech Info & Troubleshooting