What years did Mercury make/use them and what was the difference from previous version(8.2 415HP)


Anyone got photos?

Thanks

2010 to current the Mercruiser 8.2 --- HO 430 hp is a emission control CATALYST engine.. You need a G3 based scan tool to scan it and for any recal updates of the PCM 09 and up a OEM Merc dealer is the only one that can perform that. . You are not missing out owning this stock app period. There is nothing beefy internally of the build either. I had them apart in the past because of failures.

Another example of this engine is --- Really junk cheap chit fuel rails prob the lowest quality I have ever seen for any marine app. Many issues in the past including they blew up. IMO they will never make it past 500 hours without huge major issues. The early ones with the 6 cat total cat sub strakes ( 3 per side ) was one of the worst engineer designs I have ever seen, Vertical mounted positioned cats --- 6 total cats made no sense whats so ever.

Around 2013 year models or SOON after ? the cats went thru a huge design changed to 1 cat per side and horizontal mounted.with completely all new exhaust design as well. They have gotten better year after year fixing the issues one after another but I would never want to own one period.

Also the same common issues with the GEN 3 cool fuel system took place as well, I want to say up till 2016 or so that end got better as well. Like I said there is nothing special about this engine internally actually pretty weak and nothing that would offer a solid foundation if you ask me. .Again I would pass on this engine even at half the price.

^^^ Pathetic.^^^ My old 496 & 502 engines were beasts, in fact one reason I owned them was I could depend on them for a fun day of boating. Not the fastest by any means but I rarely if ever missed a day on the water which is what these engines should be all about. Terrible that a base engine that should be a workhorse suffers these issues, criminal almost.

I have had both the old 502 mpi and 496 Ho in boats. The 502's for me were much more reliable. Change the drive fluid, oil, AND CAP AND ROTOR yearly and you are good to go. I did Impeller every other year. 496 just seemed to have gremlins. I will say nothing got the Fuel Millage the 496 got. This was in a 24/7 go fast. Same boat the 496 got 15% better economy at cruise. But it did like the SHOP.

Chris

volvo penta has the least catalyst related failures -- Mercruiser had some 02 issues trying to keep them dry and some cat failures - then the 8.2 L CAT has had issues actually from the start --- poor exhaust design and so forth. . They get ironed out but seems something else pops up for the 8,2 small issues or even few bigger issues here and there.. .

Volvo and Merc both use a cat that is made here in the USA - they are the metal cat cores aka Bricks. Indmar uses a ceramic cat core aka bricks. The ceramic core is less forgiving. But indmar still has it down. They Indmar entered the emission control / cat engines in 2006 even before the EPA mandated law came into effect .

Indmar used that to leverage for marketing their engines in Malibu boats exclusively. Since many wake boats have persons 3 to 6 ft behind the boat for wake surfing and other crazy stuff - the marketing and timing was very smart on Indmars and malibu s part.

They marketed one of the many examples --- " Emission are alot cleaner behind our boats and engines " --- This was perfect for the wake board boat end user and they bought into that.. Extremely smart to do the cat emission before it was required by law.

Indmar did alot of testing to bring all that to market but all the Marine OEMs knew it was coming and waited to the deadline. EC mandated by CARB and the EPA. Indmar they brought to market in 2006 before CARB --- California in 2008 and the rest of the USA in 2010

Plus an emission control / cat engine gives a new boat owner a longer factory warranty. even spark plugs are included in that EC warranty. 3 years / 480 hours which ever comes first.

EC = EMISSION CONTROL aka CATALYST ENGINES

I use an 8.2 Mag Ho without cat but Whipple stage 2 software and CMI Plugandplay headers!
This engine runs now 5 years without any trouble and only 2-3 KmH slower than an 525 EFI that was before in the boat!
The 525 was in before and the 8.2 comes for them.The 8.2 needs much lower gas and no transom dirt at all!
Maybe it was best option to get rid of the Catalyst systen and use without.
Michael

I agree Michael, I did the same thing with my Sonic. Ran great, very reliable and no issues.

And this engine is perfect to make an 520 Racing copy!!!

the 8.2 has rocker arm failure as well. It is listed under per engine serial numbers. There is a SB about it thats not that old. Visit your local Merc dealer for the engine serial numbers which they fall under. to see if your 8.2 is on that list.

The injectors take a special service for testing and cleaning so watch out there whomever does that. I know first hand because I get them in and have to perform all of that correctly. Again it is not the standard uniform cleaning and testing procedures for these exact injectors.

Also the fuel rails are the cheapest things I ever seen period. A balance hose that has a liner internally is going to cause issues down the road. And keep in mind the balance hose is a rubber hose inwhich fuel will degrade it is due time. Its 12 inches long and is a specific hose to help with damping. The cost is 76 bucks for it currently.

Sorry I am not a fan especially for any CURRENT big block that is not making at least bare min 1 hp per cube in this current market. Take the emission control and all that related stuff completely off and really there is nothing new tech about the engine nor the build. Still 30 year old tech for a current marketed engine. Ilmor and Volvo completely know this as well.

IMO thats a paper weight at only 380 hp and 430 hp ---- hell half the weight for all these LS based engines will smoke that stock big block engine. I am talking about the black side engine here. Actually this black side EC 8.2 is all put together in house by MERC.

Actually all their engines are and have been for a while now -- assembled in house. NO more GM based longblocks coming into their doors. Kind of think they might regret that. Just my own opinion