Mercruiser 330 454 bravo 1 upgraded to mercruiser 425 specs. With todays advanced computer technology adapting to the marine market, the whipple supercharger system allows maximum performance to be obtained from a stock engine. Its very important to properly identify which 454 engine model you have. Buy new alternator fits mercruiser marine stern drive 454 mag mpi 5. Mercruiser 454 question checkmate community boating forums. The manifold above is known as the center riser manifold. Recently, my starboard engine has had an intermittent stalling problem at idle.
To start viewing messages, select the forum that you want to visit from the selection below. Click on the part number to check pricing or place an order. Manifolds free delivery possible on eligible purchases. Dont need to go crazy with it just want a little more and dont know where to start. Carbureted at get details about the carbureted superchargers and where to buy the procharger parts for the mercruiser. Based on the same 454cubicinch big block chevy, general motors marine engine division set up the motor specifically for use in boats. New and used items, cars, real estate, jobs, services, vacation rentals and more virtually anywhere in ontario. They may even be able to send you a dyno chart on that engine build. The 454 ho big block is chevy performances most economical alternative crate engine to rebuilding see images, dyno specs, installation info and more.
Motor is stock accept for i added the 454 mag fuel injection, i. It actually got on plane much easier even with the bigger prop. Mercruiser oil filters boat engine parts for sale ebay. Mercruiser plus series 357 magnum bravo engine 325 hp 714. If it does not shift you have a problem in lower shift cable or in the upper unit. The future of performance boating for your stock or modified mercury efi engine. Ppt provides 454 engine information to help you when you buy mercrusier parts from. Mercruiser 19931997 454 magnum mpi stage 1 kit mefi 1 vbelt. Mercruiser 454 magnum mpi models the 454 mpi came in 2 different hp versions being the 330hp model which was known as the 7.
We use cookies to give you the best possible experience on our website. Power tips for a 454 mpi archive checkmate community. The 454502 magnum flat lifter camshaft has 224224 duration. Maximum revolutions per minute is 4,200 to 4,600 rpm. Mercruiser engines are made for the marine market by mercury marine. It starts fine, runs fine, power is normal, and generally shows no problems. Mecruiser parts select engine size discounted instock. Sterndrive engines 454 magnum mpi v8 mercruiser 454 mag mpi specifications 2012 modelcontact us for latest model information propshaft horsepower. Replacing or repowering your mercruiser 454 or 502 marine. Pulled the cylinder heads mercruiser 454 lots of pics.
The engine weighs 65 percent less and has much better resistance to corrosion. He is wanting to step it up a bit maybe around the 450hp range. I replaced the carb on my mercruiser 454 magnum and it still pops in th intake manifold answered by a verified marine mechanic. Mercruiser exhaust manifolds for 1983 and newer big block chevy 454 330 7. My question is, what kind of hp increases can i expect to see. This is a stunning offshore power boat, so it handles inland waters easily and delivers a thrilling ride. Mercruiser 454 engines for sale enter your email address to receive alerts when we have new listings available for mercruiser 454 engines for sale. I am probably a little out of line here because i am a jet boat guy but. In a stage 1 upgrade on a mercruiser 350 mag hpi, whipple increases output by 20 hp and torque. Its not available everywhere, so i have been using 15w40 with a bottle of stp added to each engine. To put it in perspective going from a 300hp 350 to the 310hp 454 my chapparal picked up 4mph just due to the fact i could run a larger prop and still get on plane due to the extra torque even though both engines made same hp. Mercruiser plastic carburetor flame engine top cover 7.
If this is your first visit, be sure to check out the faq by clicking the link above. I replaced the carb on my mercruiser 454 magnum and it. The blocks are made more precise than ever and consume less fuel, run more smoothly and they are quiet. Stp oil treatment contains the zinc antiwear agent zddp. We were wondering if a marine 454 like a mercruiser 454 can be swapped into a car. Heres a little background and direction that will hopefully help you with your repower project.
The 496 magnum ho mpi v8 2012 modelcontact us for latest model information this engine is super slick. We mated both engines to a mercruiser bravo 1 outdrive. Mercruiser carbureted supercharger kits marine procharger. This is a video of my rebuilt mercruiser 454 being started on the test bench. Mercruiser 454 question engine technical discussion. Mercruiser 454 magnum mpi vs mercruiser l29 454 marine. Efi complete tbi fuel injection kit stock chevy 454 7. Buy mercruiser boat engines and motors and get the best deals. The tbi and the ecm are remanufactured the rest of the parts new fuel pump new small cap distributor except the upgrade large cap distributor is a remanufactured with new ignition module and pickup coil the adaptor plate is a custom cnc machined plate that is pocketed to draw off all 4 holes barrels on your intake manifold. And they make cheap cameras to hook to an iphone like they use for toilets.
We have a 454 mercruiser magnum engine on the boat down at lake powell and it wont start. Mercruiser 46807151a8 sea water pump failure youtube. I was having a discussion or debate with a friend of mine regarding the marine 454 big block engines e. If so, the ss super sport tuning kit for your mercruiser magnum mpi engine is what you need. And lastly how can i increase the horsepower of my stock engine without having to add a blower or supercharger. Would it be possible to basicly turn my 454 into a 454 mag by buying new parts or is the magnum a different block all together. I know most of you will recommend doing an engine swap, but im lookin for some additional bolt on power. Its a 1986 mercruiser mie 340 454 with a 4bbl quadrajet. With this drivetrain, the 350 magnum weighs 3 pounds less than the 7. Mercruiser 454 rh reverse rotation engine firing order. If so, the ss super sport tuning kit for your mercruiser magnum. Yet the weightperhorsepower ratio for each engine is fairly close. Because general motors was not a boat maker, but a motor and automobile maker, their marine engines division often sold parts to companies specializing in setting up marine engines such such as mercruiser.
Mecruiser parts select engine size 4 cylinder, 6 cylinder inline, v6, v8 small block,v8 big block,race sterndrives. I milled the heads off the 3 pesky exhaust manifold bolts and was able to remove both manifolds. My 1988 us marine 454s have a sticker on the valve cover saying to use 25w40. Do you want quicker acceleration, faster planing, and increased performance of up to 15 hp.
We are consistently faced with the questions of whether the 7. Do you want quicker acceleration, faster planing, and increased performance of. Most will tell you to pull the engine and drop a 5. Buy mercruiser oil filters boat engine parts and get the best deals. No superchargers i think who has the proven combination. Borrowing tomorrows technology for today, whipples marine intercoolers are made of cupronickel, which is.
Had to rebuild the motor its a original 330 hp bravo 1 its now a. Here is a picture of the bolt with the head milled right off shiny thing to the right of the spark plug hole, and also a picture of one o. Mercury mercruiser recommends leaving the drain system open while transporting the boat or while performing other maintenance to ensure that all water is drained. Both oif these engine models are easy to recognize by the large bread box style intake plenum mounted directly on top of the engine. Am i approaching this at the right angle so to speak. Alternators free delivery possible on eligible purchases. Plans partnerships developers digital sales ios app android. Find mercruiser 454 in canada visit kijiji classifieds to buy, sell, or trade almost anything.
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