Exhaust Riser
Exhaust Riser
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 Catapiller 3116 Exhaust Mixer Riser  US $150.00
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 Glenwood Exhaust water logs Nicson Risers jet boat parts small block chevy US $300.00
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 MERCRUISER EXHAUST RISER GASKETS US $100.00
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 MerCruiser 470 170 488 165 190 37 Liter Exhaust Manifold Riser Late Style US $399.00
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 Osco 689 Chrysler Marine Exhaust Riser 2846689 273 318 340 360 New US $89.99
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 Mercruiser Exhaust Elbow Riser 76351 US $35.00
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 Glenwood Vintage Big Block Chevy Jet Boat V drive Exhaust with 3Snail Riser US $250.00
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 MERCRUISER EXHAUST RISER US $29.99
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 CUMMINS 6CTA 83 SS EXHAUST ELBOW US $450.00
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 2011 CUMMINS 6CTA 83 SS EXHAUST ELBOW US $750.00
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 Mercury 6in Exhaust Riser Kit Part 879288T83 US $395.00
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 Manifold Exhaust Chrysler 318 360 V8 Center Riser Marine 4417063 US $379.95
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 78 Galaxy 18 Boat W 120 OMC Exhaust Elbow Riser US $74.99
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 Exhaust Riser Marine Pleasurecraft PCM 3 Inch Outlet Ford GM V8 Osco US $99.95
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 Mercury Quicksilver Exhaust Riser Assembly Part 15062A1 Brand New OEM Boat Part US $249.95
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 Mark Twain 18 Boat Mercruiser 140 HP Exhaust Riser US $67.99
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 Sea Ray SRV 240 W 225 Mercruiser Right Exhaust Riser US $65.99
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 Sea Ray SRV 240 W 225 Mercruiser Left Exhaust Riser US $65.99
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 EXHAUST MANIFOLD 18 1953 FITS MERCRUISER SMALL BLOCK ENGINES W CENTER RISER US $145.00
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 Riser Exhaust Elbow Chrysler Marine Swivel Type V8 Osco US $179.95
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 Ford Small Block 302 351 Standard Exhaust Riser R029001 PLER029001 US $68.51
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 GLM 51320 OMC STYLE EXHAUST RISER FOR GM SMALL BLOCK US $141.02
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 Bayliner 25 Parts Mercruiser 188 Left Exhaust Riser US $65.99
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 Bayliner 25 Parts Mercruiser 188 Right Exhaust Riser US $65.99
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 Barr CM 20 4142411 Chrysler Exhaust Riser Upper Elbow V8 273 318 340 360 361 383 US $219.99
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 Sierra 18 19751 Riser W Exhaust Tube US $193.23
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 Sierra 18 1927 RiserExhaust Crusader 97772 US $199.38
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 Volvo Penta AQ series V6 exhaust manifold riser 841578 US $60.00
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 Barr Exhaust risers part 20 0082 US $120.00
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 Exhaust Risers GLM US $375.00
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 barr nip riser chris craft 2 sizes 5x gaskets earound US $9.99
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 OMC COBRA 50 57 V8 GM EXHAUST RISERS EXC CONDITION FRESH H20 1986NR US $99.99
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 Mercruiser Exhaust riser bolts SS GM small block center risers 4 bolts US $16.50
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 4417603 Chrysler Marine Exhaust Riser 4Extension Center Rise 318 360 US $61.00
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 Mercruiser PreAlpha 305 350 GM Port Exhaust Manifold 7234B US $95.00
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 Sierra 18 1922 RiserExhaust OMC 987784 US $177.10
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 Mercruiser 18 1971 Sierra Marine Exhaust Riser Used v8 US $35.95
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 Chrysler Exhaust Riser Inboard New with Warranty US $115.95
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 Chrysler 6 Exhaust Manifold Riser E9232M 318 360 440 US $68.50
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 MerCrusier Exhaust 3in Riser 93320A10 fits some GM V8s US $200.00
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 Riser Exhaust Center Riser for Chrysler V8 318 360 80up US $99.95
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 18 0476 EXHST RISER BLOCK OFF GSKT INDMAR MARINE POWER US $2.49
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 Mercruiser Exhaust Elbow Riser Gasket US $5.75
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 Manifold Marine Exhaust Barr Style GM 454 74L 502 82L V8 Center Riser Osco US $179.95
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 Penn Yan 24 Boat Mercruiser 57 Stbd Exhaust Riser US $65.99
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 Glenwood BBC Exhaust Logs and Risers US $125.00
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 Riser Exhaust 4 Low Profile Crusader XL Series Center Rise 98126 US $183.95
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 Spacer Riser Block Extension Exhaust 3 Inch High Barr Style US $89.95
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 GM Style Small Block V8 Center Exhaust Manifold HGE1 83 US $203.95
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 Ford Small Block V8 Barr Style Exhaust Manifold HGE1 81 US $198.95
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 Sierra Manifold Riser 18 907 fits Ford Small Block US $80.00
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 Osco 992 Indmar Marine Power Barr Exhaust Riser 0992 000 20 0082 10° 3 New US $89.99
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 OMC VOLVO RISER ELBOW 3857944 3863061 FIT CENTER RISER MARINE EXHAUST MANIFOLD US $95.95
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 IMCO powerflow manifold and riser kit NO RESERVE US $900.00
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 Exhaust Spacer Riser Block Extension 3 Inch Mercruiser Log End Riser Osco 1851 US $59.95
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 Marine Exhaust Riser Spacer Block Extension 3 Inch High Barr Style Exhaust Osco US $69.95
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 OMC EXHAUST RISER ELBOW 908251 US $90.00
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 Osco 9943S Indmar Marine Power Barr Exhaust Riser Spacer 20 0097 3 Tall New US $69.99
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 PCM 3 in Exhaust Riser R029001 US $131.00
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 Riser Exhaust Chrysler Marine 318 340 360 US $109.95
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 Osco 9863 T OMC Marine Exhaust Riser 909863 909218 982680 35 V8 Cobra New US $109.99
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 Barr CM 20 9234 Chrysler Exhaust Riser Lower Elbow V8 361 383 400 413 426 440 US $119.99
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 VOLVO PENTA OMC EXHAUST RISER FORDGM 43 82 L 1990 UP NIB PART 3857402 US $200.00
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 New Genuine Crusader 98126 4 Exhaust Elbow Exhaust Riser US $190.00
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 Osco 7169 Crusader Marine Exhaust Riser 8 Tall 97169 305 350 V8 57L 454 New US $109.99
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 NEW VOLVO PENTA EXHAUST RISER US $175.00
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 Volvo Penta exhaust manifold pipe elbow riser AQ170 AQ165 BB170 BB165 831163 B30 US $136.98
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 MERCRUISER EXHAUST RISER ELBOW 76351 US $70.00
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 MERCRUISER 3 EXHAUST RISER ELBOW MARINE ENGINE V6 V8 US $89.95
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 Volvo Penta OMC Exhaust Riser 30 Liter Volvo 3857798 Fits Volvo OMC 30 L US $280.00
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 NEW OMC COBRA STERNDRIVE EXHAUST RISER US $195.00
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 OMC20980536 Barr Marine Exhaust Riser US $129.99
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 Osco 8128 Crusader Marine Exhaust Riser Spacer 4 Tall 98128 V8 New US $99.99
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 Exhaust Riser Kit Fits 2001 2002 Engines L710 93320A10 US $229.95
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 Pleasurecraft Marine Boat Exhaust Riser Elbow Ford V8 3 PCM RO29001 New US $129.99
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 Exhaust Riser 98503 Mercruiser 260 262 98504 US $73.62
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 OSCO MARINE 3322 MK EXHAUST RISER SPACER MOUNTING KIT US $4.99
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 NEW SIERRA MARINE 18 1970 1 REPLACES MERCRUISER 98504A3 EXHAUST 3 RISER ELBOW US $102.99
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 FORD V8 302 50L 351 58L OMC COBRA VOLVO SX HI PERF EXHAUST MANIFOLD RISER KIT US $495.95
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 New Volvo Penta Exhaust Riser V 6 Motors W Warranty US $109.95
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 37 167170180190470 EXHAUST RISER US $80.00
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 OSCO BOAT EXHAUST RISER US $60.00
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 Volvo Penta Marine Exhaust Riser 3 Inches Taller Than Stock 3862627 US $249.95
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 Exhaust Riser Elbow Manifold Gasket V Drive Jet Boat US $15.00
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 Mercruiser Stainless Steel Exhaust Risers NLA US $300.00
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 OMC 155 V6 200 V8 exhaust elbow riser 312151 981280 0312151 0981280 31215 US $107.65
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 GLM Exhaust Manifold GM V8 Small Block US $213.81
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 GLM Exhaust Manifold Ford V8 Small Block US $266.07
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 Exhaust Riser Kit Fits 02 MCM V8 Eng L710 864306A 2 US $395.95
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 Osco 7772 Crusader Marine Exhaust Riser 4 Tall 97772 305 350 V8 New US $99.99
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 Volvo OMC 43 350 454 Exhaust Riser Gaskets 3850496 US $22.96
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 Osco 8503A MerCruiser Marine Exhaust Riser 3 Oulet V6 V8 98504A3 98503 New US $99.99
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 Exhaust Riser Kit Fits 2004 Up V6 V8 L710 865996A01 US $354.95
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 Ford Chevy Marine PCM Exhaust Manifold and Riser Kit US $550.00
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 EXHAUST MANIFOLD 509522 OMC GM SMALL BLOCK BOAT BOAT PARTS US $270.40
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FOR SALE Mercruiser 470 3.7 Exhaust Riser Elbow 76325 A2 (2 BBL) Mercury 224 I/L4 Used @104.99
Marine Exhaust Systems - How They Work by
Marine exhausts systems are an important and often overlooked part of a Marine Engine. Most vessels have a 'wet' exhaust system. Salt water is injected at the riser the outlet for exhaust from the exhaust manifold. This mixture of exhaust gas and water is then passed through a series of bends until it exits the boat, preferably at the stern.
Exhaust gases mixed with salt water create a highly corrosive compound. This is why exhaust systems are commonly made using non-corrosive components such as nitrile rubber reinforced hose (brown not green stripe), galvanized steel, fiberglass or plastic. The purpose of these components, which vary in size and shape depending on the engine size and layout of the engine room, is to prevent hydraulicing of the engine. This is caused when an engine has filled with salt water which has entered via the exhaust and can cause extensive damage if left for more than two hours. Water enters the exhaust from wave action at stern and poor exhaust design. In some ocean conditions, such as a following sea, water can be forced back up the exhaust when the engine is not running. Poorly designed exhausts allow water to flow back and fill the waterlock/muffler box then up the hose into the exhaust manifold, through the exhaust valves and into the combustion chamber. With the engine full of water the engine cannot crank over as it is cannot compress water.
You will know your engine is hydrauliced if it will not turn over generally after a long sailing period and you have removed the Starter Motor and ensured it works. To remove water from inside the combustion chambers, first remove all injectors, crank engine over to blow water out, refit injectors, bleed injector lines, and start. Then leave motor running until exhaust sorted out.
Check to see that the riser is not coked up or corroded a common problem. To check the exhaust riser remove the Exhaust Hose from the riser (often a difficult procedure) and look up the pipe to see if it is restricted by exhaust/salt build up. If build up is excessive the riser will have to be removed to check the engine end of the pipe. Coke can be scraped out to provide a short term fix although often the riser will have to be replaced. There are aftermarket systems which vary in quality. Make sure you fit the right design for the application.
Ensure your water-lock is low enough and big enough to hold all the water in exhaust system. Is there a gooseneck or central vertical loop in the Exhaust Hose at the transom exit? Is there a siphon break and is it functioning properly no leaking valves?
Exhaust gas is poisonous and can cause sea sickness and headaches. Replace any faulty parts immediately. Use double Hose Clamps on each joint or, preferably, super clamps, bolt style, and exhaust cement if need be. Hot sections should be lagged with fiberglass tape to prevent burns.
Beware of asbestos lagging. Many older vessels and Marine Engine installations had exhaust systems that were lagged with asbestos tape and rope. Asbestos sound-proofing was also common in older boats.
Chris Miley is an online author and a keen boater. He maintains the website Marine Diesel Secrets and the Pontoon Boat Site.
Article Source: http://www.earticlesonline.com/Article/Marine-Exhaust-Systems---How-They-Work/257423