Mercrusier 5.0 Horsepower Rating

[kev_79]

All,<br /><br />I have just purchased a 95 bayliner 2050 SS that has a 5.0 mercruiser. I can't find the hp rating on it anywhere. I'm probably not looking in the right place. The previous owner said he thought it was 205, but I thought that was a little low for a V-8 of this model. I had a 78 5.0 with 4 bbl and it was 228 hp. This is the 2bbl, so that could be correct. I thought I had heard that the 5.0 with 2bbl was 220 hp, but that may be newer models.<br /><br />Let me know where I can find it and if this is a rated hp for this motor/year model.<br /><br />Thanks,<br />Kevin

 

[tommays]

Re: Mercrusier 5.0 Horsepower Rating

kev<br />there should be id numbers for everything right on top of the motor you need that motor # to get a corrrect answere<br /><br />tommays

 

[rabidfish]

Re: Mercrusier 5.0 Horsepower Rating

propshaft HP:<br /><br />5.0L ( 2bbl - 190hp )<br />5.0LX ( 4 bbl - 205hp )<br /><br />The newer models do have better HP<br />Your 78 was not rated at the prop...

 

[kev_79]

Re: Mercrusier 5.0 Horsepower Rating

So, you are saying that a 95 4bbl has 205 hp?<br /><br />I thought the 4.3 4bbl had more than that.

 

[wvit100]

Re: Mercrusier 5.0 Horsepower Rating

My '95 4bbl 5.7 was rated a 235 hp at the prop.

 

[wvit100]

Re: Mercrusier 5.0 Horsepower Rating

The 4.3 4bbl says 180 hp at the prop

 

[wvit100]

Re: Mercrusier 5.0 Horsepower Rating

That was wrong, the 4.3 4 bbl wasn't listed. The 4.3 2 bbl was listed as 180 hp.

 

[RatFish]

Re: Mercrusier 5.0 Horsepower Rating

I'll add to the confusion:<br /><br />2004, 5.0L 2bbl, 220HP

 

[kev_79]

Re: Mercrusier 5.0 Horsepower Rating

I guess I was wondering if my 95 was same as the 04 @ 220 hp.<br /><br />To be honest, I haven't looked under the cover to verify I have a 2bbl. I bought it last Saturday and left it in my dad's garage.<br /><br />There's just something about having 220 hp vs. 205 hp that makes you feel better. <br /><br />I guess it doesn't really matter how much I have b/c I'm only going as fast as it will take me!<br /><br />Ratfish, what kind of boat do you have and how fast can you go with the 5.0

 

[RatFish]

Re: Mercrusier 5.0 Horsepower Rating

kev_79, <br /><br />Remember this...<br /><br />Torque - Gets you moving.<br /><br />HP - Keeps you moving.<br /><br />I do a lot of water sports and usually have a full compliment of passengers. IMHO, Torque is the name of the game. You want lots of it with a flat curve across the RPM range. <br /><br />I have a 2004 Bayliner 205 (20'4") with the 5.0L mentioned above. With a stock 19P aluminum prop I hit 53 on the speedo (No GPS). I had about a half tank of gas, minimal gear and one other person on board. I was going with the wind and tide on a tidal river. Trim was set for maximum speed.

 

[John_S]

Re: Mercrusier 5.0 Horsepower Rating

My Merc service manual confirm Rabidfish's numbers. The latter, post '97, use vortec heads and do have higher hp.

 

[kev_79]

Re: Mercrusier 5.0 Horsepower Rating

What's different about vortec heads? Roller rockers or a different head all together?

 

[John_S]

Re: Mercrusier 5.0 Horsepower Rating

Different head with improved combustion chamber and taller intake ports (requires a specific vortec intake manifold). Used on most mercruiser engines, starting around 1997/1998. Do a web search, lots of info.

 

[rabidfish]

Re: Mercrusier 5.0 Horsepower Rating

It's true, the Vortec 4.3L make more HP than that 5.0L<br /><br />It's also true that the 5.0MPI ( vortec ) makes as much as the old 5.7L ( 260hp ) 'Course... The new 5.7MPI make 300, etc, etc, etc...<br /><br />Who wants one shipped to them... anyone???<br />Just email your credit card number...

 

[O.P.]

Re: Mercrusier 5.0 Horsepower Rating

Just purchased an upgrade engine for my 84 Chaparral. Had a Merc 5.0 with 4bbl that said 228hp on cover, upgrading to a 5.7 4bbl with 300hp. This should really wake this boat up.