In this video I show how to remove an inboard boat engine from the boat. I go over all the nuts and bolts and wires that need to be removed, as well as throt. The 3L has a cracked block. I picked up the boat being told it had a 4.3L so my idea was to swap parts to the engine I have and get it back up and running and flip it. Once I got it home I found out it was the 3L. So that's when I got the idea of doing the swap, but it sounds like a lot of money and time to perform it. I want to swap my 4.3L V6 carb Merc out for something like a 5.7 or an offshore 355 Merc w/ Bravo 1 outdrive. I am very serious about doing a swap like this in my boat. I have the space and weight capacity in my boat available to allow this swap. I am looking for tips on this swap. Hello Guys, Are there any straight forward upgrades to increase the power of a standard Mercruiser 3 litre? I have a new prop to install for the start of the season but was wondering if anyone can advise me on easy power gains (apart from the obvious, buying a bigger boat). 4.3L Alpha 4V 225 Crankshaft Horsepower WOW! A V-6 that makes more power than a 5.0L V-8. Replaces 4.3L - and 5.0L-powered runabouts while delivering V-6 fuel economy. Part number 865108R89 HP / kW @ flywheel 225 / 168.
Steve McAlister wrote:Mercruiser 3l Swap
: I opted for the 4.3 on my 19. Weight of the engine was a consideration plus:I opted for the 7.4L on my 22. Weight of the engine was a considerable
gain, plus the fuel economy of the 7.4L was a biggie (consumption that is).
Get real people! It's a Boat!!! If I wanted fuel economy when I
purchased my most recent internal combustion engine, I would have bought a
GEO. People buy boats to have fun (last time I checked). Nothing is
worse than realizing your brand new boat is underpowered. Also, is gas
mileage REALLY that big of a concern? The difference between the 4.3 and
5.7 would be irrelevant in terms of weight and economy (or lack of...).
Yeah, I'm sure the 4.3 would suit the boat fine, but then why not just get
that much more of a good thing.
Go 350!
I've never heard of a fellow boater complaining about having 'too much' power.
------------------------------------------------------------------------
Andrew G. Bayley
agba...@mtu.edu
Michigan Technological University; Electrical Engineering
TRW VSSI Competitive Analysis - Inflatable Restraints
1969 Yamaha AT1-M 175cc (ready to donate to Smithsonian)
1977 Datsun 280Z28
1983 Ford Ranger 2.3L Turbo (soon)
1985 Toyota 4WD SR5 Wagon 1.45L 24.6 @ 64 mph
------------------------------------------------------------------------
------------------------------------------------------------------------
Andrew G. Bayley
agba...@mtu.edu
Michigan Technological University; Electrical Engineering
TRW VSSI Competitive Analysis - Inflatable Restraints
1969 Yamaha AT1-M 175cc (ready to donate to Smithsonian)
1977 Datsun 280Z28
1983 Ford Ranger 2.3L Turbo (soon)
1985 Toyota 4WD SR5 Wagon 1.45L 24.6 @ 64 mph
------------------------------------------------------------------------
Steve McAlister wrote:
: I opted for the 4.3 on my 19. Weight of the engine was a consideration plus:
Mercruiser 3l Swap Engine
I opted for the 7.4L on my 22. Weight of the engine was a considerable
gain, plus the fuel economy of the 7.4L was a biggie (consumption that is).
Get real people! It's a Boat!!! If I wanted fuel economy when I
purchased my most recent internal combustion engine, I would have bought a
GEO. People buy boats to have fun (last time I checked). Nothing is
worse than realizing your brand new boat is underpowered. Also, is gas
mileage REALLY that big of a concern? The difference between the 4.3 and
5.7 would be irrelevant in terms of weight and economy (or lack of...).
Yeah, I'm sure the 4.3 would suit the boat fine, but then why not just get
that much more of a good thing.
Go 350!
I've never heard of a fellow boater complaining about having 'too much' power.
Mercruiser 3l Swap Engines
------------------------------------------------------------------------
Andrew G. Bayley
agba...@mtu.edu
Michigan Technological University; Electrical Engineering
TRW VSSI Competitive Analysis - Inflatable Restraints
1969 Yamaha AT1-M 175cc (ready to donate to Smithsonian)
1977 Datsun 280Z28
1983 Ford Ranger 2.3L Turbo (soon)
1985 Toyota 4WD SR5 Wagon 1.45L 24.6 @ 64 mph
------------------------------------------------------------------------
