Buy a genuine mercury quicksilver or aftermarket part. The boat comes with a 502 mag mpi i dont know if it is ho or not and also has an after market exhaust and procharger. Mecruiser parts select engine size 4 cylinder, 6 cylinder inline, v6, v8 small block,v8 big block,race sterndrives. The motor sounded and ran fine, all gauges were good during whole operation. Unfollow mercruiser 502 mpi to stop getting updates on your ebay feed. I have a 1996 mercruiser 502, question at cold crank it. The previous owner was meticulous with the upkeep of everything so even though im not expecting anything bad, im planning on doing compression tests in the next week or 2 to verify things are still ok inside. Cam, lifters, roller rockers with screw in studs added, valve upgrades, ecm reprogramming, exhaust, and minor head work are the most common things ive seen. I have the 2bbl intake set up and i am sure going to a 4bbl will help. I know most of you will recommend doing an engine swap, but im lookin for some additional bolt on power. I am looking for some suggestions on a cam for a 2000 502 mag mpi i did some mild porting to the heads and intake i also will be using cmi headers. A combination of highflow aluminum ovalport cylinder heads with 2.
Aluminum with brass insertshigh rise see note cast iron 4 bolt main bearing caps forged aluminum. What can i do to increase the performance on my mercruiser. The units run on pump gas and have an integrated intercooler for maximum power and engine protection. Our high performance outboards spring from a heritage of uncompromising breakthroughs. We will rebuild your 502 mpi into a 540ci efi with mercury 525efi fuel injection unit. Procharger makes superchargers for both carbureted and fuel injected mercruiser v8s. Exchange your 502 mpi for a rebuilt 540 ci efi marine engine with a scat rotating assembly and dart heads putting out over 675 hp. The cmi 454502 etop header kit is a true plug and play system.
My question is, what kind of hp increases can i expect to see. Twin mercruiser 502, this is just the way these engine came out of the boat in the picture and the boat ran 47 mph. Maximize your ride with mercury racing parts and accessories. Inspect the condition and the tension of the belts. Tuning chip optimized for better drivability and fuel economy. The drive is an 07 bravo iii and was put on new last november someone stole my last one, the motor is an 03 mercruiser 5. If you want to upgrade a mercruiser 350 mag mpi, youll spend. We are working hard to ship as quickly as possible, while ensuring the safety of our associates. Questions about 502 mag mpi upgrades my engines have 500 hours on them and are 100% stock with just emi thunder exhausts added. The billet aluminum flow command is designed specifically for stock or modified 454502 efi systems. According to procharger you get a reliable 155horsepower gain on a stock mercruiser 502 mpi.
I am in no way unhappy with the current performance. Sometimes a lot of power, but if youre off by a few degrees and get detonation your engine will not live long. Vi gm 454 v8 19982000 0l002006 thru 0l6746 big block v8 inboard engines oem and direct replacement parts catalogs. Cmis 454502 etop headers are a direct mercruiser replacement for your 454502 engine. Vesselview mobile provides mercury marine smartcraft engine owners with. Mercury racing performance marine and automotive engines. There are several people with lots of history in successful 502 mpi upgrades. Whipple breathes more power into 350 mag mpi boating. From towing to drag racing, the 502 ho big block crate engine has power on tap.
Questions about 502 mag mpi upgrades baja boat owners. Mercruiser v8 engine repowers hitech marine have carried out hundreds mercruiser engine repowers over the last 20 plus years with new, remanufactured and reconditioned mercruiser engines and drives. There is no need to purchase additional custom tails. From engine data to vessel system information, mercury vesselview the. What can i do to increase the performance on my mercruiser 7. You might try disconnecting the throttle cable to confirm the that cable adjustment is or isnt the problem. Supercharging systems vortech superchargers marine. Also can i turn up the rpms without damage to my out drive. Mercruiser 502 mpi to 540 efi 675hp engine upgrade with. Whipple can take your 300 hp 350 mag efi and tune it to produce more power and torque than a comparable 502 mpi without adding the weight of a big block. Manuals and user guides for mercruiser 350 mag mpi. Userfriendly features like the new maintenance center at the top front of the engine help both consumers and techs. Thermostat housing and hoses for mercruiser 454502 mpi.
Mercruiser v8 engine repowers hi tech marinehi tech marine. Download vesselview mobile and enjoy it on your iphone, ipad, and ipod touch. Mercruiser petrol engine parts parts for the highest quality mercruiser petrol engine parts parts look no further than europes number one marine part supplier. If so, the ss super sport tuning kit for your mercruiser magnum. Clean the flame arrestor, iac muffler mpi engines, and the crankcase ventilation hoses. These upgrades are well documented and are widely available from reliable and reputable engine builders. Hardin marine just introduced the mercruiser 454502 efi systems application to its line of high performance flow command adjustable fuel flow modifiers.
Mercury outboard, mercruiser parts, alpha, bravo, sterndrives, inboard engines, optimax, verado, marine engine parts, propellers, sierra parts super discounted, free. Mercury racing props are designed to maximize performance and handling in any application. Mercury 540 ci595 hp upgrade from 500 efi mercury 540 ci635 hp upgrade from 500 hp mercury 540 ci595 hp upgrade from 502 mpi. Mercruiser 350 mag mpi user manual 150 pages gasoline engines. Mercruiser 502 mpi to 540 mpi 550hp engine upgrade highlights.
We have 3 mercruiser 350 mag mpi manuals available for free pdf download. Click the button below to add the 502 mercruiser mcm 502 mag mpi twin to your wish list. Mercruiser 350 mag mpi specifications sterndrive information. Cmi headers offer more water jacketed protection than your stock exhaust can provide. Parts catalog mercruiser big block v8 inboard engines. This includes fully preparing for longterm cold weather storage. Mercruiser 502 mpi to 540 mpi 550hp engine upgrade w 2. Mercruiser 502 mpi to 540 efi 675hp engine upgrade highlights.
We have the knowledge, experience and track record to give the best price and right advice for all your mercruiser engine requirements. Am i approaching this at the right angle so to speak. The reliable and complete hp500 efi supercharger system. However, it is non adjustable and is controlled by the ecm. I doubt the shift adjustment has anything to do with the engine stalling while shifting. I have a 1996 mercruiser 502, question at cold crank it has 60 psi oil pressure, but after it warms up its drops back answered by a verified marine mechanic.
Mercruiser 502 specs gone outdoors your adventure awaits. The idle speed should be 600rpm in gear in the water. Block is square and parallel decked and align honed. The flow command allows modification of the fuel flow rate to properly tune the air flow ratio.
Race or pleasure we have a high performance sterndrive for you. Done correctly you can add timing and fuel to an engine management system and make more power safely. Pushes the boat to 5254 mph depending on water conditions. Mercruiser efimpi supercharger kits marine procharger. Purchase a new mercury mercruiser gas or inboard engine installed in 2016 through 2020 model year boats and get five years of limited coverage.
Vi gm 502 v8 find your engine drill down to the horsepower, liters or outdrive model, serial number range and component section to get an online inventory of original and aftermarket mercruiser boat parts. Do you want quicker acceleration, faster planing, and increased performance of up to 15 hp. These meticulously built 540 engines are sure to satisfy your horsepower cravings. Step by step how to instructions for winterizing a mercruiser 5. Why wont my iphone xr connect after the last update.
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