V6mpi vs. carb V8 question

[toddbrown]

Hello. I am buying another boat and need some engine advise. I had a 98 Bayliner 1850 with the 4.3 190hp. I am looking at a V8 for more power. I noticed that I can get the 4.3 MPI and get about 225hp or the 5.0 V8 carbed and get 220hp. What is the benefit of the V8 over the MPI V6? Is there more low end Torque for wakeboarding with the V8?

 

[gatorred]

Re: V6mpi vs. carb V8 question

mpi is fuel injection try fuel injection on v8 at the end 5 hp is all it is the car dealer told me <br />pulling is torque more torque with v8 it's posible to have same hp but dfferent torque rpm but mpg goes up alot with fuel injection to that's why it's in car's. a though

 

[craze1cars]

Re: V6mpi vs. carb V8 question

What?<br /><br />Here's a translation....maybe.<br /><br />WOT HP will be about the same, so I'd expect top speed to be similar. V8 will certainly have a bit more torque. But, the V6 will be a lighter motor which may offset some of that torque loss in terms of accelleration. And I'm quite sure a V6 with EFI will get MUCH better fuel mileage than a carb'd V8. I do believe the MPI V6 is more expensive to buy, but I could be wrong on that.<br /><br />Benefits of MPI V6, rock solid idle, consistent turnkey starting for anyone without pumping or giving it gas, no flooding, no gas fume odor, quieter, lower emissions, less fuel consumption, lighter weight, and I'd predict better resale value in a few years when carbs are finally put where they should be...history books.<br /><br />Benefits of carb 5.0 V8, a little more torque on the low end. Might be cheaper.<br /><br />If it were me making the choice, I'd buy the MPI V6 in a heartbeat...or jump up in size to a carb 5.7 or an MPI 5.0 if you really want a more noticable improvement over what you have.

 

[craze1cars]

Re: V6mpi vs. carb V8 question

I'll also add this. I have a friend at a local Glastron dealer that has a boatload (no pun intended!) of brand new 195's sitting on their lot with the 5.0 Volvo carb motor. They have been discounting these things more and more for over a year and simply cannot move them no matter what. He told me everyone who wants that boat makes them special order it with either the Volvo MPI V6, or the MPI 5.0. Not sure if that means anything, but makes me think my prediction of resale value may not be too far off....they can't even sell them new.

 

[watered down]

Re: V6mpi vs. carb V8 question

Just as a general concept...higher hp effects top end WOT, while it's the torgue that gives you more ummmmph out of the hole. So the V-8 would give you more torgue in general.<br /><br />That being said, the above advice is valid. IMHO there are more advantages having fuel injected over carbed. As stated above, many of the left overs I saw out here were carbed...although 2 dealers told me they order more carbed cause thats what they sell more of. <br /><br />I did not want the carb for reason cited above and held out until I found a deal on the GXI. Good luck

 

[KCook]

Re: V6mpi vs. carb V8 question

My preference is a Merc V8. But weight is a consideration. In a 185-190 class boat the lighter weight of the 4.3L might make it a better choice. Larger boats could handle the weight of the V8 more easily.<br /><br />Kelly Cook

 

[toddbrown]

Re: V6mpi vs. carb V8 question

Thanks! I do 90% water sports so I am just trying to get teh best engine fo rthis. I think I will go for the MPI V6 even though the V8 has more low end torque. COuld I get a good used 19 footer open bow for 20K with the MPI?

 

[KCook]

Re: V6mpi vs. carb V8 question

Yes, I would think that would be pretty easy to find. Prolly for well under $20k for that matter.<br /><br />Kelly

 

[JB]

Re: V6mpi vs. carb V8 question

Let's move this to the I/O Engine forum.