Mercruiser Exhaust Riser Torque Specs

I do remember it's different than manifold to engine. (more than a basic Long Block) 225HP with 4bbl carb or EFI Injection / 190HP with 2bbl carb. 7L 4-cylinder for a Cast Iron Exhaust Manifold. They are the typical inboard outboard MerCruiser risers on a PCM engine. 0L Mercruiser motor and dual prop Bravo 3 outdrive for great power and torque! Great platform for water sports and all day fun on the water. com Click here for answers to your questions. Anyone know what it should be? I looked in the PCM Manual and found the exhaust-manifold-to-head bolt torque (20 ft-lb) but can't find what the riser bolt torque spec isunless they're calling the riser the "water outlet," in which case it would be 30 ft-lb (which sounds high to me). 7L) Application Ft. Crusader fuel injected engines are calibrated to operate on 87 octane fuel and maximum performance is obtained when using this fuel. CMI Sport Tube Headers are the highest quality stainless steel water jacketed marine headers on the market for use up to 1000 horsepower. Mercruiser V8 small block 5. Combined with the additional 50mm exhaust riser height over the 454, this should reduce condensation in the exhaust system running back into the combustion hambers. PowerFlow Big Block Manifold and "A" Riser Kit (Sold in pairs) Shown with optional riser bung. Chapters typically cover sections such as: Cooling System, Engine Specifications, Drive Shaft, Fuel System, Ignition, Electrical Systems, Gear Case, Storage/Winterize, Timing, Trim, Tilt, Torque Specifications and Tune-Up. This lightweight, clean burning V8 engine is available in two output configurations, 335 and 370 horsepower. MECURY MERCRUISER GM V8 7. All marine inboard engines have exhaust risers. 485 mercruiser rebuilt engines in b c. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. mercruiser high-output alternator. The MerCruiser manual by Clymer is the best owners reference book for repair and service information for your MerCruiser stern drive boat. i don't think that flat tappet engine is going to turn 5500 reliable. I think the rear-end ratio is a stock 3. "great forum. 4 Big Block Exhaust Manifold Assembly Mercruiser 330 340 MIE Chevy Marine 454 7. ***ENGINE OIL COOLERS MUST BE REPLACED FOR WARRANTY***. For longer bolts and studs, say 6 inches or more,. 7 exhaust manifold and riser torque specs-gctid610938 11-24-2014, 08:15 PM I'm in the middle of my closed cooling installation and I had to remove the risers and 1 exhaust manifold due to clearance issues. Mercruiser V8 small block 5. The most important thing is making sure that both surfaces are 100% clean and flat. • Check carburetor, points, plugs, wires and distributor vacuum and mechanical advance systems to avoid possible problems in the future. (more than a basic Long Block) 225HP with 4bbl carb or EFI Injection / 190HP with 2bbl carb. Maintenance and troubleshooting are covered in each manual as well as wiring diagrams. it costs me almost exactially the same to do a 350 as it does a 383. Cold Riser Fluid from the exhaust manifold is prevented from entering a cold riser by the gasket. Marine exhaust headers sold separately. Torque nuts (fine thread) 15 to 20 ft. 4kw, New 460 Ford Marine Ford Flat Head Model A 60 Exhaust Manifolds Leon Marine Motors Beverly N. 1 HO MPI, Levitator 496cid or Marine Power 8. OK this looks to be the standard. I need the torque specs for the intake and exhust - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. Graymarine Indmar Interceptor Mercruiser OMC Perkins Riser Center Dishcharge Manifold & Riser System Dimensions Exhaust Risers. So they are coming up to two years old. This MerCruiser 5. Shop, read reviews, or ask questions about SIERRA Exhaust Manifolds, Elbows, Risers at the official West Marine online store. When equipped with the same marine exhaust headers as found on the 383 Scorpion ®, this engine produces 370 HP and 456 ft-lbs of torque—more than a 502 carbureted engine. Available for the MerCruiser engines—the 380-hp 8. harness adapter in stock today on the internet. 3L/262 Marine Engine This will replace the exhaust manifolds used on a 2 piece exhaust manifold system from years 1983-2002 (Non-Dry Joint). All V-6 and V-8 engines require two manifolds. What are the torque specs for a mercruiser 454 exhaust manifold to head bolts and riser to manifold bolts ? dont know but a merck dealer can tell you But b/4 you do clean the bolt holes out and run a tap in them then put anti seige on the bolts very easy to snap off replace bolts for a nice pro job. 0L/LX (1990 & newer) EXHAUST MANIFOLD 879288T06 Fits MCM 3. i don't think that flat tappet engine is going to turn 5500 reliable. Rond's Marine is a powersports and marine dealership located in Winnipeg, MB. Probably a bit more torque as well. Barr Marine OMC-20-982680 OMC-20-982680 Marine Exhaust 36HAL01のBarr Riser :20190510225653-03589-u:36HAL01 未分類 フォーラム) 先日は数年ぶりにお会い出来て良かったです。. Is the heavier weight of the volvo justified by it´s cutting edge technology?or is the mercruiser and it´s lighter weight the right choice?. 7L MPI's and can't recall the recommended torque spec for the elbow-to-manifold (no risers) 3/8" bolts and stud/nuts. Complex though they can be, it's not black art. Anything from cold intake, performance ignition piggyback, performance exhaust, throttle body spacer, etc. 2MAG ECT catalyst Mercruiser engines with the 2" tall riser on the cast manifold (Which is the most common Mercruiser uses). The MerCruiser 8. 2L 300/350 ECT From Mercury. Anyone got the camshaft specifications on lift and duration and overlap for the 454/502 MAG MPI? Could also use the info for the 454mpi. A prevailing torque bolt/nut that is clean and free of rust may be reused. Direct Replacement Engines for: Mercruiser – OMC – Volvo – Penta – Chrysler – Chevrolet Chris Craft – Commander Crusader – Ford – Glasstron Indmar – Marine Power – Osco – Interceptor. All geniune Volvo enta parts come with a one-year guarantee against material defects. Marineengineparts. 72742 a b a - 8 Per Kit b - 2 Per Kit The below swim platform exhaust pipe can be modified for specific height applications by. 2L D-Tronic Diesel Engines. I would do middle then outside. When equipped with the same marine exhaust headers as found on the 383 Scorpion ®, this engine produces 370 HP and 456 ft-lbs of torque—more than a 502 carbureted engine. Mercruiser Exhaust Manifold Torqueing Sequence. Use thread sealer on all bolts that go into the water jacket, which means all blocks except Bowtie and aftermarket. New Marine Starter Motor for Inline 4 Cyl 2. 188 mercruiser. mercruiser exhaust resonator kit. We offer a wide variety of riser styles to fit any application. Like the lower-spec MerCruiser V-six and V-eight sterndrives, the HP500 has pushrods with roller bearings on the camshaft lobes to reduce friction and increase component lifespan. 00 each using very nice parts, and be turn key drop ins with new exhaust and risers. Big Block Volvo 8. 7L MPI's and can't recall the recommended torque spec for the elbow-to-manifold (no risers) 3/8" bolts and stud/nuts. Combined with the additional 50mm exhaust riser height over the 454, this should reduce condensation in the exhaust system running back into the combustion hambers. Comes with a 1-YEAR MerCruiser factory warranty!. 4 Big Block Exhaust Manifold Assembly Mercruiser 330 340 MIE Chevy Marine 454 7. Marine Exhaust Manifolds and Technical Tips. Volvo Penta 3863061 Exhaust Riser; T-20935 Exhaust Manifold Riser Elbow Volvo Penta Engine 855380 Sierra 18-1935-1 51510; M. MerCruiser understands that when you are on the water, you're there to escape the stresses of daily life, not add to them. Yes, it does mean that Crusader engines are more sensitive to overheating because more of the very hot exhaust system is being cooled by the FWC side. You have to be very careful with cam timing on a marine engine as you are concerned with torque, not HP as torque will always overshadow HP at or below 5252RPM. Anyone got them for NBS 5. We are open 7 days a week from 9am - 9pm Eastern Time. Sterndrives, outboards, and propellers. Any exhaust leak on a diesel will leave a black "soot trail". com Exhaust Manifolds and Risers for Osco Barr Mercruiser. H2O T-20970 3" Exhaust Manifold Riser Elbow Mercruiser 98504A3 Sierra 18-1970-1 GLM 51110. Crane cams gives the 500EFI cam - Crane 169621 - as cam lift. Permatex makes it under a different name, it comes in a small plastic container with a brush inside the cap and is dark brown in color. Mercruiser V8 Models 228, 255, 260 898 - Mercruiser V8 Models 198, 228, 255, 260 Mercruiser Manifolds and Center Risers exhaust 1979 mercruiser 228 dies at high RPMs - Boat - "I have a 1979 22' 1979 mercruiser 228 dies at high RPMs; Online Manuals: Printed Manuals: REPAIR MANUALS and BOAT ACCESSORIES. Fill Manifolds with Coolant. Exhaust Manifold To Cylinder Head 20. 3/4″npt fitting is used on front of pipe for thermostat housing that have (4) 1″ hoses water to go to exhaust manifolds if needed click on (ADD BUNG). See the link for installation instruction for further sizing specifications. This system features a single o2 sensor bung provision on one of the exhaust risers. I would change my risers but I don't want to lose the captains call. CUMMINS ENGINE SERVICE PARTS - Cummins QSB 5. All marine inboard engines have exhaust risers. Small Block Chevy Intake Manifold Bolt Torque Specifications. 7 efi 05-23-2018, 01:26 AM Hi all, I have received my new manifolds and risers and have found that the large drain plugs are not fitted to them but have been provided, I can't seem to find any info and how to install these, do I need to put some sort of sealer or plumbers tape on these when. 5-140 HP Outboards (1992-2000). writing for political satire magazines. Can be trimmed if necessary for modified port applications. Small Block Chevy Intake Manifold Bolt Torque Specifications 25 Ft/Lbs Make sure you follow the sequence in a couple of steps, worry about this more on old and aluminum manifolds. Check your gasket manufacturers specs to be sure. Crusader solves this problem by including the cast iron risers on the fresh water side of the cooling system, so that without sea water going through them these risers can last ten years or more. New BARR Replacement for Mercruiser 4. Select MerCruiser Test Model HP Fuel consumption WOT; MerCruiser 3. Base engines include coils, water pump, and flywheel. Thanks to its new, long-runner scroll intake manifold which draws in more air and converts it into additional torque, the 4. 0" exhaust outlet and a 90° down angle. This is the ideal replacement engine for 454HO and 502 HO carbureted engines that power cruisers, large runabouts, and sport boats. 3 V6 Vortec Marine Base Engine. exhaust elbow, the exhaust elbow will also require replacing with the one piece exhaust elbow p/n 12076A2. We are a manufacturer of gaskets and seals, supplying into many industries and countries all over the world. General Installation Tips for Cast Iron Exhaust Systems 1. 3/4″npt fitting is used on front of pipe for thermostat housing that have (4) 1″ hoses water to go to exhaust manifolds if needed click on (ADD BUNG). I'm just about to replace the elbows on my 2003 Crusader 5. Tip locations should be 3″ higher then stock. Set contents. We at Full Throttle Marine are one of the few facilities that have a prop shaft dyno capable of up to 800 HP and an engine dyno room plumbed to run marine engines in a complete wet environment. & in‑line 6 cyl. 2 black scorpion,. 2L TDI Inboard, Sterndrive 2015 The 4. [Archive] Mercruiser 5. mercruiser v8 exhaust risers and accessories MERCRUISER V8 MODELS 330, 340 and 454 MAGNUM MERCRUISER V8 Models 898R, 228R and 260R. "Cursaders, 270 C. 3L plezzzzzz!? Tighten the bolts first pass in sequence to 5 Nm (44 inch lbs. Mercury Racing high performance marine and automotive engines. Torque nuts (fine thread) 15 to 20 ft. Permatex makes it under a different name, it comes in a small plastic container with a brush inside the cap and is dark brown in color. 0" exhaust outlet and a 90° down angle. GLM products are completely compatible and interchangeable with the OEM. 0L MPI engines WATER CIRCULATING PUMP 46- 879194401 Fits MCM 4. Can be trimmed if necessary for modified port applications. a 4" exhaust hose connection is standard. exhaust elbow, the engine seawater and exhaust gases mix and discharge together. (229 mm) of riser height can be added. com Exhaust Manifolds and Risers for Osco Barr Mercruiser. Step 1, Read your owners manual. exhaust leaks are not that big a deal, but if teh water leaks into the exhaust and hits the valves, you have big issues. The most important thing is making sure that both surfaces are 100% clean and flat. exhaust elbow, the exhaust elbow will also require replacing with the one piece exhaust elbow p/n 12076A2. 1 cm) and clamped or otherwise secured to a good heavy table works Step 2, Trim the drive up so you can locate and disconnect the speedometer hose at the. Is there a torque specification for the 4 bolts that connect the raw water side to the manifold. I think the rear-end ratio is a stock 3. Reportedly this has caused rusting of cylinder walls and piston rings in some MerCruiser petrol V-eight sterndrives fitted to deep-vee hulls. Mercury Marine Manifold Exhaust Kit for V-6 GM 4. Manual gives no specific sequence to torqueing the manifold. With the 2bbl, I don't know. You'd achieve torque, but not the way you'd want to Steaming your exhaust makes all of it add up, from different tone at idle (fighting the backpressure) to decent midrange as the pulse overcomes the backpressure, just to encounter pressure the pulse can't overcome at higher rpms. The MerCruiser 6. Mini-Mouse Bolt-Ons - While the much-maligned 305 was never intended to be a performance engine, that doesn’t mean it can’t make respectable power with some proven bolt-ons. Shift bracket, ECM, or EFI brackets available as bolt on or welded to the risers. com Click here for answers to your questions. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. OEM MerCruiser Exhaust Riser mounting bolts Fits 4. 0LX 12076A2. It is 32 inches long and 30 inches wide. 3/4″npt fitting is used on front of pipe for thermostat housing that have (4) 1″ hoses water to go to exhaust manifolds if needed click on (ADD BUNG). The V8 engine gets 260 horsepower, displacement of 305 cubic inches, normal aspiration, generates 4,600 to 5,000 revolutions per minute, has a bore of 3. Not legal for sale in the state of California. Find exhaust risers elbows available for buying now. Crane cams gives the 500EFI cam - Crane 169621 - as cam lift. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. P Each Engine; 400 Ft-Lbs. Engine Specifications. Multi-Purchase Discount! Buy 3 Get 25% off. Funny though, they want you to put the riser on the manifold, then bolt the whole deal to the cylinder head! That will work if you have 3 arms and have been doing some serious weight training. MECURY MERCRUISER GM V8 7. crusaderengines. Big Block 3″ Stainless steel “A” risers are designed for stock Mercruiser Bravo exhaust with 3″ riser block between manifold & Riser. Select MerCruiser Test Model HP Fuel consumption WOT; MerCruiser 3. You only have a small surface between the exhaust and the water, so you need that to seal. 1976 mercruiser. Rated at 350hp @ crankshaft; torque specs: 390 lb/ft @4,200 rpm, it is compatible with all Bravo outdrives; will not work with Alpha One outdrives. Marine Parts Supply is the official distributor of Hino marine engine parts in North America. PowerFlow Big Block Manifold and "A" Riser Kit (Sold in pairs) Shown with optional riser bung. • Check carburetor, points, plugs, wires and distributor vacuum and mechanical advance systems to avoid possible problems in the future. 0L complete stern drive package is ideal for replacing most Mercruiser, Marine Power and OMC 3. 3 , small block, and big block MerCruiser engines with 4" Riser Elbows Will not work for dry joint (2002+) Not for riser mounted remote oil filter!. 4 Liter engines 1987 and later. exhaust leaks are not that big a deal, but if teh water leaks into the exhaust and hits the valves, you have big issues. i don't think that flat tappet engine is going to turn 5500 reliable. 3/4″npt fitting is used on front of pipe for thermostat housing that have (4) 1″ hoses water to go to exhaust manifolds if needed click on (ADD BUNG). I have so far been unable to find installation instructions including torque specs and suggested sequence pre and post initial warm up. Once you have them snugged down, they get torqued to the manufacturer's specifications. 3L gasoline engine - Answered by a verified Marine Mechanic We use cookies to give you the best possible experience on our website. Mercruiser Dry Joint Exhaust Manifold 864308T01 , 865049T01 , 865735A02 Our Price: $281. 1 / 496 Replacement; Exhaust Risers / Tailpipes Big Block Merc 8. com is a wholly owned subsidiary of Lighthouse Marine Distributors, Inc 2019. DOWNLOAD a MerCruiser factory repair manual straight to your computer in just seconds, fix your problems now. Fits MCM 120/140 (1982‑1989) EXHAUST MANIFOLD 96705A 1 Fits MCM 140 (1982 & older) EXHAUST MANIFOLD 860235A03 Fits MCM 3. I do remember it's different than manifold to engine. 2 MPI cooling system heats the exhaust manifolds, thereby reducing the buildup of condensation and decreasing the threat of water ingestion for longer engine life. com Site Index Page. Your exhaust riser looks like it may be high enough but check to make sure that the lower point on the elbow (the spill over point) is at least 12" above the water line. 0L, & Early V6 & V8 Fits Mercruiser, Volvo Penta, OMC and other Inboards Inline Bolt Pattern using One Long, One Short Bolt (Bolts included) Used on Volvo Penta AQ 205, AQ 211, AQ225, 570, 571,and other early Volvo V6 / V8 Used on Mercruiser 2. Download a repair manual for your MerCruiser sterndrive or engine in seconds. You'd achieve torque, but not the way you'd want to Steaming your exhaust makes all of it add up, from different tone at idle (fighting the backpressure) to decent midrange as the pulse overcomes the backpressure, just to encounter pressure the pulse can't overcome at higher rpms. Riser Exhaust for Mercruiser Inline 4 Cyl with Cast Iron Manifold 76325A2. Not responsible for typographical errors. 0 Manifold to Head Gasket 1968-1982 Factory gasket that goes between the head and manifold. DOWNLOAD a MerCruiser factory repair manual straight to your computer in just seconds, fix your problems now. 72742 a b a - 8 Per Kit b - 2 Per Kit The below swim platform exhaust pipe can be modified for specific height applications by. (all day long) it may if you convert it to a roller motor, but that can get expensive at the machine shop. Get it as soon as Fri, Oct 4. Sterndrives, outboards, and propellers. Mercruiser Exhaust Systems. MARINE EXHAUST BOLTS & TORQUE: Do not use stainless steel or grade 2 bolts to install the risers or elbows. The other was on its way. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. Stock head bolts get torqued to 70 ft-lbs in three steps of 40, 55, and 70 ft-lbs. Marine exhaust headers sold separately. This MerCruiser 5. New BARR Replacement for Mercruiser 4. The MerCruiser 5. 3 liter, so the first in the sequence is 7 ft/lbs. 4L carb/MPI engines. com Click here for answers to your questions. MERCURY MERCRUISER MARINE ENGINES GM V6 262 CID (4. 17400 series Exhaust Manifold Sets: Exhaust manifold (manifold-to-cylinder head) gaskets. Thanks to its new, long-runner scroll intake manifold which draws in more air and converts it into additional torque, the 4. Mercury MerCruiser Propeller Hub Flo Torque II Drive Sleeve 835290Q1 JavaScript seems to be disabled in your browser. Due to the fitment issues associated with marine applications Tri Star asks that you verify information on the engine prior to ordering any marine unit. Set contents. 73 inches and a 3. mercruiser 140 engine head bolt torque. mercruiser exhaust resonator kit. •Exhaust/water mixing elbow (L-type) •Alternator 12 V - 80 A Optional •Flexible mounts •Exhaust/water mixing elbow, U-type (high riser) •New C-type instrument panel •Dual station Y harness •Dipstick for opposite side •Air venting device for cooling water tank Accessories Texts and illustrations are not binding. Spare Part Yanmar Original Yanmar Aftermarket Oil Filter 119305-35151 REC 119305-35151 Fuel Filter 104500-55710 REC 104500-55710 Air Filter 128270-12540 Primary Fuel Filter REC 1140639 Primary Filter Element REC 3581078 Belt (alternator) 25132-003000 REC 25132-003000 Belt (w pump) 104511-78780 104511-78780E Engine Moun. Torque; V-Drive Transmissions; 1. 344 pages CHAPTER ONE / GENERAL INFORMATION Manual organization / Notes, cautions and warnings / Torque specifications / Engine operation / Fasteners / Lubricants / Gasket sealant / Galvanic corrosion / Protection from galvanic corrosion / Propellers CHAPTER TWO / TOOLS AND TECHNIQUES Safety first / Basic hand tools / Test equipment / Service hints. a 4" exhaust hose connection is standard. Gasoline Inboard Models. This item MERCURY OEM Mercruiser V8 454 7. DOWNLOAD MerCruiser Engine Repair & Sterndrive Manuals 1978-2007 A download MerCruiser repair manual [or owner's service manual], generally in pdf format, is an instructional booklet supplied by the manufacture to maintain or repair the MerCruiser to factory specifications. 2L MAG DTS Engine with 2 inch Risers Mercury MSRP $23,777. 2L | Mercury Marine Skip to main content. Compare prices of 2008 2015 and other comparable products. I would imagine your engine will be the same. 00 Hi-Torque Big Block Exhaust Manifolds System feature state of the art design with single wall internal casting that is enclosed in a press formed aluminum jacket creating a fully water cooled manifold. Before we look at each of these big players, let's make sure everyone's on the same page and understands. Mercruiser Exhaust Systems. Marineengineparts. Rear risers included Merc 260 V8 (sbc 350) Rear rise dump 400 for pair obo Pickup preferred Delivery may be available for a fee. 1985 mercruiser 3. MERCURY MERCRUISER MARINE ENGINES GM V6 262 CID (4. i don't think that flat tappet engine is going to turn 5500 reliable. Closed Cooled Models Full‑Loop. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Mercruiser Exhaust Systems. 0 Manifold to Head Gasket 1968-1982 Factory gasket that goes between the head and manifold. I assume therefore that I dont have a cracked block, warped head or bad head gasket. 359 exhaust; duration intake 292/ exhaust 298 - no overlap spec. mercruiser exhaust resonator kit. All V-6 and V-8 engines require two manifolds. 2 Data Engine Speed (rpm) 800 1200 1600 2000 2400 2800 3200 3600 4000 4200 ––– 270 hp ––– 320 hp ––– 350 hp Displacement litres (cu. Augment performance potential potential of your Mercruiser 377 MAG MPI 6. The sterndrive should be removed for service every season. 2L 300/350 ECT has been purpose-built to fulfill the needs of sterndrive and inboard boaters. 3/4″npt fitting is used on front of pipe for thermostat housing that have (4) 1″ hoses water to go to exhaust manifolds if needed click on (ADD BUNG). 3-Liter with 4" Mangnum 7 Risers. Distor-tion of the top of the metal nut or using a nylon patch on the threads in the middle of the hex flat causes that interface. 4L LX Magnum Alpha Bravo Ski EFI MPI. 0L marine engines. All V-6 and V-8 engines require two manifolds. 1GXi, Crusader Captain’s Choice 8. Transmission Fluid Cooler exposed to during storage). 3 liter, so the first in the sequence is 7 ft/lbs. We also carry risers, gaskets and manifolds. Funny though, they want you to put the riser on the manifold, then bolt the whole deal to the cylinder head! That will work if you have 3 arms and have been doing some serious weight training. Mercury® MerCruiser® 6. For the best experience on our site, be sure to turn on Javascript in your browser. 17500 series Exhaust Manifold Cooling Sets: All the gaskets needed to rebuild the water-cooled exhaust manifold, exhaust elbow, and exhaust riser (other than the exhaust manifold-to-cylinder head gaskets). 2L TDI Inboard, Sterndrive 2015 The 4. Mercruiser V8 Exhaust Manifolds 3 Risers W Elbows Port And Starboard 89011a 8. Dana Marine Flow Torque exhaust systems are the highest quality performance exhaust on the market. 14A high-displacement footprint allows the V-8s to work smarter – not harder – with lower max rpm to ensure longer engine life. DRAWING #17. This MerCruiser 5. Introducing the Official Marine Power EnPac Engine. Pop Quiz: The owner of a 30' powerboat hops aboard his boat one day to go for a cruise, but his inboard V-8 engine is slow to start. 00 Hi-Torque Big Block Exhaust Manifolds System feature state of the art design with single wall internal casting that is enclosed in a press formed aluminum jacket creating a fully water cooled manifold. Most stern drive engines found in today’s recreational power boats are either MerCruiser or Volvo Penta; here’s what you need to know about each brand, and stern drives in general. Some merchandise may be limited in supply or available only by special order. CHOICE #3 GLM Aluminum Manifolds with Stainless Risers. replace sea water pump mercruiser stern drive. I assume therefore that I dont have a cracked block, warped head or bad head gasket. We stock almost all Mercruiser exhaust components. This system features a single o2 sensor bung provision on one of the exhaust risers. com, the official website for Hot Rod Magazine. Inspecting Exhaust Manifolds And Risers Keeping a wary eye on raw-water cooled manifolds and risers can prevent the premature death of your engine. What are the torque specs for a mercruiser 454 exhaust manifold to head bolts and riser to manifold bolts ? dont know but a merck dealer can tell you But b/4 you do clean the bolt holes out and run a tap in them then put anti seige on the bolts very easy to snap off replace bolts for a nice pro job. Start these by hand to avoid cross threading. how to install 5 7l mercruiser shift interrupter. mercruiser seacore mpi for sale. Manufactured from high-temperature composite exhaust material. 27 Mercruiser V8 Small Block Port Manifold 77234A2 , 77234A7, 77234A2. How to Install New Exhaust Manifolds and Risers on a Boat Engine March 29, 2016 November 29, 2016 - by Woody Changing exhaust manifolds on a boat engine is a simple job provided you feel comfortable working with a critical component of a marine engine. what you have here is a new volvo penta exhaust manifold 3" riser extension part number 3853621 there are various reasons for riser extensions and volvo make actual extended risers too so you will have to make sure your application is correct and also when installing risers and extensions usually you need to replace the manifolds too as the. 2 will need to be geared and/or propped lower to take advantage of the different torque curve. By clicking close you agree to use the site as is. Please Email us at Sterndrives. 3L) 1998, this Service Manual has detailed illustrations as well as step by step instructions,It is 100 percents complete and intact. Can anyone point me in the right direction? BTW - My boat has done 280hrs always in salt water since 2011, one riser was holed where it goes into the rubber boot. Problematical Mercruiser Ford 302 (888) I would also inspect the exhaust manifolds and risers very carefully. Mercruiser Exhaust Manifold Torqueing Sequence am I supposed to torque the bolts to a spec? thanks for your help, Rodger. wholesalemarine. The V8 engine gets 260 horsepower, displacement of 305 cubic inches, normal aspiration, generates 4,600 to 5,000 revolutions per minute, has a bore of 3. 135 hp: 10. I am about to replace my Exhaust manifolds and risers on my twin 5. Mercury MerCruiser 4. 25ft/lbs as well. mercruiser 140 overheating. 7 remanufactured engine fits 1987-1995 applications with standard rotation and a center bolt valve covers. Today we took apart the exhaust riser to inspect them before the Boating season of any rust. Exhaust, Log Manifolds, Risers. Marine Boat Parts. 7-litre engine with two-unit throttle body fuel injection. You only have a small surface between the exhaust and the water, so you need that to seal. Is the heavier weight of the volvo justified by it´s cutting edge technology?or is the mercruiser and it´s lighter weight the right choice?. GM offered the 502 big block engine was in their Performance Parts catalog, available as multiple crate motors with horse power ratings between 338 hp (252 kW) to 600 hp (447 kW), and torque of 470 lb·ft (637 N·m) to 567 lb·ft (769 N·m). 17500 series Exhaust Manifold Cooling Sets: All the gaskets needed to rebuild the water-cooled exhaust manifold, exhaust elbow, and exhaust riser (other than the exhaust manifold-to-cylinder head gaskets). 2L with Dyno-Boost power tuner. This complete genuine MerCruiser (6. A manifold will typically cost about $400. Buy 7 Get 50% off. wikiHow is a "wiki," similar to Wikipedia, which means that many of our articles are co-written by multiple authors. You may have to wiggle the riser to get the holes lined up. 0 mercruiser engine parts exhaust manifold, water pump, distributor, carb, wiring, engine mounts, starter, etc. mercruiser high-output alternator. This article has also been viewed 164,233 times. Plus they are hollow so transmit heat at a different rate.