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PostPosted: Thu Oct 03, 2013 10:04 pm 
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Minnow

Joined: Thu Oct 03, 2013 9:45 pm
Posts: 11
I'm new to this site, have always loved Vista's. my first was a 93 245, then 01 258. now I have a regal 272. I'm in the process of upgrading to the 328 Vista
I have searched but have not found my answer. it has the 5.7 gsi-dp's. can someone give me real world fuel burning? I would like to know gph at cruising speed's as well as wot. I have seen many different answers around the web. four Winn used to have info on this but can not seem to find it anymore.

Thanks for any help.


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PostPosted: Fri Oct 04, 2013 6:04 am 
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268 Vista

Joined: Tue May 16, 2006 9:49 am
Posts: 4989
Location: West Michigan
grf_1000 wrote:
. four Winn used to have info on this but can not seem to find it anymore.

Thanks for any help.


Really ?? Scroll down to the 328 Vista section, disregard the "SX" drive typo on your engines, as FW did not offer the SX on the 1999. Only the DP.

http://www.fourwinns.com/upload/Documen ... s_1999.pdf

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PostPosted: Fri Oct 04, 2013 7:15 am 
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Sting Ray

Joined: Mon Jun 06, 2011 6:40 am
Posts: 68
yep, that's pretty much the gas usage we got on our trip this year....about 1 mile per gallon.

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PostPosted: Fri Oct 04, 2013 8:23 am 
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Joined: Wed May 27, 2009 1:43 pm
Posts: 759
Location: Lake St.Clair, Ontario, Canada
Agree, the 328 Four Winns fuel consumption specs are pretty realistic.

You likely know this, but keep in mind the posted numbers are close to the best case scenario for fuel consumption. A dirty bottom, rough lake conditions, engines requiring tuning, a heavy throttle hand or out of wack props will decrease those numbers.

Everything in decent working condition with calm lake conditions you probably can get close to the 1.3 MPG at best cruise speed.

Mike.

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PostPosted: Fri Oct 04, 2013 9:02 am 
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Shark

Joined: Tue Oct 21, 2008 8:36 pm
Posts: 140
Location: Middle TN
Decision brings up a good point that is often overlooked. I've noticed 6-8 mph difference after cleaning the bottom. We usually cruise around 3,000-3,500 rpm which gives me 25-30 mph on gps. I've never seen 45, I think 41mph is about tops, but we carry alot of extra gear. The numbers posted above are spot on. Overall, I think our fuel consumption is on par with other cruisers that we run with. You learn quickly that WOT punches the fuel budget in the mouth. It's a great boat, enjoy!!

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PostPosted: Fri Oct 04, 2013 9:58 pm 
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Minnow

Joined: Thu Oct 03, 2013 9:45 pm
Posts: 11
Thanks guys for the replies. it seems that the fuel consumption really isn't that more then my single screw big block on the regal I have now. well at cruising speeds. I guess i'll find out next spring. :lol:


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PostPosted: Sat Nov 09, 2013 9:18 am 
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Goldfish

Joined: Sun May 12, 2013 7:20 am
Posts: 34
Yes, I too average 1 mpg in my 2001 Vista 328. Acutually I am VERY impressed with my boat-- twin GSI duoprops at 280 HP each.
Simply put, I am delighted with the fuel consumption and range of this boat!
In fact, the boat prior to this (that I had from 1994 to this year) was a 1989SeaRay 268 Sundancer with a single 7.4L and Bravo 1 drive (carbureted of course) Dry weight was about half of the FW (at 6000 lb.) and it too got 1 mpg. Boat went like stink but boy did it use fuel!
I think the duo props and the FI motors are what do it--but then I specifically wanted a boat with FI motors because of that. Note that I am in salt water and had fresh bottom paint this year. I am also a bit over-propped as my top RPM is only about 4200 rpm--but that is with 2 people, a Zodiac tender, 3.3 HP kicker for it, full fuel and water, 2 Grp 31 AGM house batteries and lots of gear and luggage.


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PostPosted: Sat Nov 09, 2013 11:54 am 
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Joined: Sun Jul 22, 2012 5:10 pm
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Location: West Palm Beach, FL
7cstevan wrote:
... I am also a bit over-propped as my top RPM is only about 4200 rpm--but that is with 2 people, a Zodiac tender, 3.3 HP kicker for it, full fuel and water, 2 Grp 31 AGM house batteries and lots of gear and luggage.

Caution: Being Overpropped can lead to valve "Tuliping" (overheating and deformation in the valves due to excessive combustion heat and pressure). Here is a good article about it:
http://www.perfprotech.com/blog/articles/marine-engine-condition-2#

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PostPosted: Sat Nov 09, 2013 1:48 pm 
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Joined: Thu Jun 29, 2006 10:26 pm
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Location: Long Island NY
That's a very good point, Ray, the 2 main causes of engine failure in marine inboards are bad exhaust that allows water in the cylinders and over propping where the engine cannot reach its specified max RPM. That puts the engine under a lot of strain as if you were trying to pull a heavy trailer with too high of a gear ratio (like a 3.07:1 vs a 3:73:1 in a truck).
The thing with over-propping is its not an obvious problem, the engine won't overheat usually if the cooling system is functioning OK but the combustion chamber temps will be too high resulting in valve overheating.
One last thing is to make sure you use fuel of a high enough octane, even though they tell you that you can use 87 octane, keep in mind as engine accumulate carbon deposits (common in marine engines because they run rich and too cool often) that increases the octane needs of the engine. I run 93 in mine don't care about the cost and no problems with valves after all this time.

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PostPosted: Mon Nov 11, 2013 1:19 pm 
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Joined: Thu Jul 21, 2011 11:15 am
Posts: 456
Location: Lake Ontario
Just to confirm what others have said - at cruise speed (sweet spot for me is 3700-3800 rpm) I see 1.25 MPG, based on fuel flow meters. I've hit 45 MPH, but didn't have the fuel flow meters at that time.

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