V6 vs. V8

Stinger

Cadet
Joined
Feb 13, 2003
Messages
9
I am looking at buying a 190 Ebbtide runabout that weighs 2600lbs. It comes standard with a 4.3 190hp Mercruiser. I can upgrade to a 5.0 v-8 220 hp for an extra $750. Seems like a good deal. If the V-8 is the way to go, how would it compare to a 4.3 EFI 220hp. Is there a big difference in gas consumption between the 4.3 EFI and the V-8 carb. Would the extra torque of the V-8 be worth the extra gas money? The primary use of the boat would be for skiing. Any suggestions will be much appreciated.
 

dick

Chief Petty Officer
Joined
Oct 4, 2001
Messages
433
Re: V6 vs. V8

It's hard for some people to belive this but the bigger engine will work less harder and probbly use the same or less fuel because of this , If you got the cash upgrade, you'll be kicking yourself later if you don't.
 
D

DJ

Guest
Re: V6 vs. V8

Stinger,<br /><br />Both powerplants you are considering have good reputations. The V-6 220 and the V-8 220 will perform very similar. The V-8 MAY have a little more low end grunt.<br /><br />The V-6 has some advantages because it is EFI. It features fiddle free starts (no choke) and may be a bit more fuel efficient throughout the powerband.<br /><br />The V-8 will PROBABLY offer a better resale value. The V-8 also lends itself better to potential modifications for increased performance, down the road, if you please.<br /><br />Maintenance costs for both will be similar. The carb'd V-8 may be easier for the average marine tech. to understand and work on.<br /><br />The outdrives are identical other than, I BELIEVE, gear ratio.<br /><br />If it were me, I'd go V-8. You'll get your $750.00 back at resale time.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,958
Re: V6 vs. V8

There's No Replacement for Displacement..!!!<br /><br />If you buy the V8, You Might be Happy....<br />If you buy the V6, You'll Never Know.....<br /><br />I've Never Heard Anybody Complain about Too Much Power...!!
 

Boatist

Rear Admiral
Joined
Apr 22, 2002
Messages
4,552
Re: V6 vs. V8

Stinger<br />Looks like I am only one on side of V6 4.3 EFI 220HP. The 4.3L will be 1 MPH faster use at least 24% less fuel and start up better and for me EFI adds value for resale too.<br /><br />Here way I figure, 5.0L has 16 percent more displacement and since to get to run right have to keep the same air fuel ratio so that means 16 percent more fuel there. 5.0L has two more clinders that 33% more friction from pistions, bearings valves, cam ect. The 5.0L also weights 81 LB more. The carbrator will use more fuel than the EFI also. I figure speed to be 43 MPH with 3600 LB of weight. Boat 2600LB two guys 400LB to Gals 300LB Fuel 200LB Gear 100LB add 81 for the V8. Just one guy no gear low fuel 49 MPH. This speed is for a Semi V or modified V boat. Both engines produce the same HP at the same RPMs so V8 works just as hard as the V6.<br /><br />The EFI will use less fuel also. With a carburetor not near as efficent at cutting back fuel when do not need it, this is because if lean out at wrong time you will burn valves. The EFI is able to lean out at times extra fuel not needed. Also with EFI when you get to the lake you turn the key and back off the trailer, no chokeing and waiting for it to warm enough to back off. EFI will adjust for tempature, and Elevation also where carb will not.<br /><br />Both engines produce the same HP but should get a little better hole shot with the V8. Both use the same outdrive with same gear ratio and same prop.<br /><br />If you really want the V8 at least go with the 5.0L MPI 260HP unless you plan to do all your own work and are affraid of the EFI (MPI). Think how your old carbureted / choked cars ran before you got EFI.<br /><br />Just my different opinion.
 

flashback

Captain
Joined
Jun 28, 2002
Messages
3,965
Re: V6 vs. V8

Boatist has a strong case for the v6, and with the price of fuel going up everyday, that v6 may be the way to go. as a matter of fact, I think he sold me on it.........good luck..........
 

johnkc

Petty Officer 1st Class
Joined
Dec 12, 2001
Messages
388
Re: V6 vs. V8

over the years i have seen a few boats in the 19' range that were available with v-6 or v-8.the v-8 made them run real bow high and actually slower out of the hole .test ride before you buy the v-8 if you are leaning that way,
 

magster65

Commander
Joined
Sep 1, 2002
Messages
2,573
Re: V6 vs. V8

Strong case boatist, I agree with what you say however... maybe I'm just old school but I like simplicity on my boats. Electronics are better for engine control but near impossible to repair or even diagnose for the average boater. This equals higher maintenance costs. A choke can be set-up to work properly during short warm ups if that's what you prefer (I do). I'd bet the economy and performance are very similar so I'd buy the carb'd V-8 for the simplicity and the sound as well, V-6's sound horrible and V-8's are the best sounding engines ever made. <br /><br />Just my opinion.
 

Boatist

Rear Admiral
Joined
Apr 22, 2002
Messages
4,552
Re: V6 vs. V8

Magster65<br />I agree you should buy the V8 with the Carb because that what you know and want. I on the other hand belive in EFI. I have always done my own auto work but in the old days was always working on my cars, 57 Chev, 74 Chev vega, 74 chev Blazer, 86 chev nova. Then I got a 92 EFI Geo Prizm and was worried I may not be able to fix myself. I always buy the factory manual also. I change the oil and filter and have had one check engine light. I checked the manual and found that with a jumper wire could read out code. I took a paper clip and jumpered two pin and it flashed the check engine light 9 times paused and flashed it 5 times then repeated. Looked in book for 95 code and it said oxgen sensor dirty or bad. I pulled it out cleaned and it connector and put back in and never failed again. With the book very easy fix. I do not know if marine engines do the same but I will bet the computer running the EFI will trap error codes to tell you what is wrong if it has problems. That 86 nova I worked a month trying to find a warm up problem. It had about 25 vaccum hoses and valves for all the smog gear finnaly found a bad hose. I now have two other EFI cars but only other problem I have had is my sons car had to adjust the throttle position sensor to increase idle speed as was dieing with the air condition on in traffic. Fuel mileage of all three EFI cars over 30. I should also say I have worked in computer field since 1967 and also have taken many electronics classes on my own. Also built my own CB, 2 Meter ham radio, 27 inch TV and lots of test equipment so I like electronics.<br /><br />As far as fuel mileage When I bought my 1980 Crestliner 21 foot alumimum boat I ask the dealer at the boat show if he had any fuel mileage spec for difference engines and he did not but since all the factory rep were there he said would have then check. When I returned to buy the second week of the boat show he had info the 4 cylinder was slowest and use the least fuel, the straight 6 was a little faster and used more fuel and the V8 was fastest and used the most fuel. The spec I was looking at was best fuel mileage at crusing speed. I bought the 4 Clyinder so my top speed is 38MPH. Where we camp at I made friends with two couples that seem to alway show up when we are there. My boat is a 21 foot aluminum runabout but these two couples both have 19 foot Starcraft Islanders, a cuddy cabin. Both have radars and kicker motors and fish locker so boats very much the same, but one has a v6 mercruser and the other a V8 with a merc outdrive . Many times we team up to run up the coast about 24.8 miles to a place we all like to fish. When we go that far offshore you always start with a full tank and when you get back always fill up for next day. While we may not go exact same distance but close to same distance. I mean when we reach fishing area and start drifting may find a hot spot and go back over it a couple of times or if it is dead move a little ways and try a different spot so each may travel and little different distance. When we get back my depth finder will usually say have traveled 60 to 65 miles. When we fill up I need 15 to 16 gallons, The V6 group will need about 18 gallons and the V8 guy about 22 gallons. This is traveling as a group up and back on the buddy system for saftey and fun at a speed around 25 to 28. Average Summer swells 4 to 6 feet and 8 to 12 second apart. There boats do catch more wind than mine and I know this because when drifting without kickers running they will pass me up slowly. Also both there boats have many more rivots than mine. When my 140 HP OMC stringer must be replaced, my next motor will be a EFI and most likely a V6 Vovo dual prop. Can not get EFI in 4 cylinder.
 

Doug Durako

Chief Petty Officer
Joined
Nov 17, 2002
Messages
519
Re: V6 vs. V8

Stinger---are you a slalom skier? Will you be pulling tubes?<br /><br />Test drive the boat with your normal load of people and ski behind it. That's really the only way to know if the v6 is going to drown you on the hole shot.<br /><br />I agree with earlier reply---go with v8 and EFI if you are always going to have a load of people who want to ski. Hitting the throttle and pulling up skiers all day long is a lot different than gently cruising.<br /><br />Pretty cold in your part of the country right now but I wouldn't buy a boat without a thorough on-water test.
 

charleswmoore

Petty Officer 2nd Class
Joined
Oct 30, 2002
Messages
105
Re: V6 vs. V8

I had a like decision between a small block and a big block. I felt the big block would have made the same speed with lower RPM but then I looked at my usage. Yes I wanted the bottom end power to plow over a following sea and I liked the idea of having unlimited power at the helm. With a little more thought I had to look at the way the boat was to be used day to day and decided to go with the 5.7 lter with fuel injection. Also I added duo prop to the mix and ended up with a boat that has good botom end power and also the trolling speed was slow enough to bounce that bucktail off the bottom without going in and out of gear all day. In making this decision I feel I sacrificed quite a bit of speed but for a bay / offshore boat speed was something I couldn't have anyway.<br />If slow speed trolling is unimportant go for the <br />power and spring for an additional 1200.00 and add<br />EFI you won't be sorry. Also just as a side note get the Bravo Three or Volvo and forget those d____ dog clutches.
 

magster65

Commander
Joined
Sep 1, 2002
Messages
2,573
Re: V6 vs. V8

Boatist, You have lots of figures there and seem to want to argue about engine set-ups, forget it, I've stated my choice, I like simplicity when I'm on the ocean... when you're heading fishing it's a good thing the V-6 and V-8 gang back off the throttle so you can keep up. They are probably cruising at less than thier optimum so you won't be embarrassed showing up 10 minutes behind them. You should pay for the extra gas they burn. ah hahaha funny eh? Just jokin' around. You have more mechanical aptitude than your average boater, trust me, I've seen them at the launch ramp. I understand why you bought the boat you did.
 

Boatist

Rear Admiral
Joined
Apr 22, 2002
Messages
4,552
Re: V6 vs. V8

Magster<br />We could all run faster if we wanted to but the seas in summer are usually around 4 feet every 10 sec or 6 foot every 9 seconds out of the Nothwest at 7AM. Since we are headed Northwest in light aluminum boats directly into the swells and we are all in our 50's so no one wants to pound it too hard to save a few minutes. I agree everyone buying a boat should gather information and pick what is best for them. It is a lot more fun if you get the boat you like. Did not mean to argue just to give a different opinion.<br />Take care and Enjoy the Water.
 

magster65

Commander
Joined
Sep 1, 2002
Messages
2,573
Re: V6 vs. V8

Boatist, sorry, nor did I. On another topic, where is it that you like to fish? I'm starting another thread in 'fishing' with a map of our 'hangout'. I may put another with a map of my home-port in 'boat questions'... check it out. :)
 

conimicut1

Seaman Apprentice
Joined
Sep 18, 2002
Messages
46
Re: V6 vs. V8

I'm surprsied in this day and age the still use carbs. I have one on my 80's boat. They are simple, but you are buying new. I couldn'r see spending all that cash on an old technology. I can't make any comment on v8 or v6 but get some form of fuel injection, it will pay for itself on gas savings alone and perform better. Use the gas savings to pay a mechanic when it goes bad, if it ever does!
 

Stinger

Cadet
Joined
Feb 13, 2003
Messages
9
Re: V6 vs. V8

ddboater,<br /><br />I am a slalom skiier. I'm 6'2" and 220lbs, so I need something with a good hole shot. My current boat, 16.5ft Four Winns, 135 i/o , just pulls me through the water, not ontop of it like water skiing requires. According to my wife, the next boat I buy has to last me at least ten years, so she suggested I get what I want now because it won't happen in the future if the next boat I buy is underpowered. I'd be happy with a v6 if it can pull me out of the hole effortlessly. I think I'll take your advice and test drive one in the spring.
 

Boatist

Rear Admiral
Joined
Apr 22, 2002
Messages
4,552
Re: V6 vs. V8

Magster<br />We fish along the California coast from San Francisco north. The place we go most is Bodega Bay where the movie Brids was filmed, about 50 miles North of San Francisco. We camp there and Fish up North weather permitting. We go as far as Salt Point, but also fish Timber cove, Fort Ross, and Jenner. Up until last year we also went west 26 miles ofshore to Cordell Banks but only when seas less than 3 feet and more than 10 seconds apart. Due to change in fishing regulation can no longer fish Cordell Banks for Rock fish. Also so on nice day go south as far as 20 miles. Problem with this area is when the wind comes up in afternoon have to fight the Swells and Chop all the way back.
 

Doug Durako

Chief Petty Officer
Joined
Nov 17, 2002
Messages
519
Re: V6 vs. V8

Stinger---I am about your size. My wife and two kids also slalom, and wakeboard, and tube.<br /><br />As our kids grew up, we found we were pushing our old Cobalt with the 6-cyl. pretty hard (it was about 50hp less than what you are looking at).<br /><br />We ran it a good 12 years, but I could have used the extra HP many times when extra people were in the boat. On a calm day, I like to ski at 36 to 38 mph and the new boat does that with ease, fully loaded. <br /><br />One of the responses above mentions the dual-prop drives. Might be worth the time to test one of those also---but that's about a $2K upgrade.<br /><br />Good luck! Hope spring breaks soon here in snowbound Illinois!
 
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