repower

Hi all! I purchased a project Sundeck 240 with a low-compression 5.0 MPI motor over the summer but am now facing a difficult decision on which engine to install into the boat. After teardown, I discovered the 5.0 ran lean and "tuliped" an intake valve in the problem cylinder. The bottom end and...

Dear all, Please note that I am repowering my '93 290 DA from the old twin 4.3 LXH (205hp) with Alpha One GenII to the new 4.5 MPI (250hp) with Alpha one using the same drives and transom assembly (overhauled in the past and in immaculate condition). The propellers however will have to change...

I just purchased 2 new engines for me 290 SLX. I had steering issues and it turns out the only way to permanently fix the problem is remove both engines, replace the transom assemblies and put everything back together. Because it is the same cost to Install new or old engines, I went ahead and...

I've got a sundancer with mercruiser 496's, 2009 model year. Which by the way, I heard was the last year they were made. Something in the lower unit let go this weekend with 550 hrs on one engine. I'm trying to figure out the easiest and best way to get it repaired. Mercury only sells long...

Hi purchased a 2007 SeaRay with Mercury 383 Repower by previous owner, unfortunately the unit uses excessive oil, end of year 2 of 3 year transferable warranty......I believe its ring seal and/or bad pistons used etc. Anybody had any experience with this? THanks Anybody have any similar issues

OK, here's the new thread. I'd like to keep it specific to our model years, and specific to your upgrades, refits, and repower help. The official thread has a bunch of interspersed topics on this, so I think over time, we can put together a cross reference instead of copying all those posts...

Well we're nearly complete with a complete refresh of our 2002 460 DA. Two new RECON Cummins 6CTAs, a new Onan 11.5 kW genset, stripped bottom and running gear with new barrier coat, bottom paint and propspeed, all new Raymarine electronics including the first eS128 on the East cost (possibly...

Hello, I just bought a 1994 220 Sea Ray with a 5.0LX Mercruiser Bravo 3 for $7,200 (has a new mercury kicker motor, Furuno Radar and is in good shape but needs some TLC) - which I thought would be cheap family fun for the summer. Turns out the engine is frozen due to lack of weatherization by...

Hi , my name is Tom and i am was just lucky enough to purcahse a 1997 370 sundancer that needs new engines. The former owner started to dismantle the old ones so really not even a good core between the two. The trannys seem ok. These were Generation 6 454 7.4 carb motors. My question is...

Good Day Team: I'm considering re-powering my 1998 Mercruiser 454 MPI Gen VI to a Mercruiser 496 375 HP. Need some pointers... I'm not interested in the new 8.2, just the 8.1. I just learned within the last week... (Defender sale) ...about a guy who did a rebuild on his two 454s last...