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Thread: How much Fuel are you burning?
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07-27-2020, 10:59 AM #1Senior Member
- Join Date
- Jun 2016
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- 288
How much Fuel are you burning?
So... I have my Max Pretty well sorted. I am very happy with my wave. We run 1250's in the Rear, and 910's in the Midlockers. That with a couple of my larger friends on surf side produces a fantastic wave around 10 mph for me, 10.2-3 for our daughter and we run 10.4mph on the right side wave. We typically go out for about 2hrs a session. What is catching me off guard is my Fuel Consumption. Everyday I am putting in around 25-30 gallons of Gas in the boat to replace what I used before. The cost is starting to be...Noticeable to say the least, as well as the Material Handling of the gas. For sure we are plowing a bunch of water, but I am wondering if there better way to achieve a big wave, and gain back some efficiency? My Rpms with a 2419 prop range between 3800 - 4200rpm. I would love to get that in the 34-3500 range, but when ever we dump ballast, we dump "wave."
Anything I should be considering?2019 MAX
2015 Mobius LSV Surf Edition (SOLD)
2001 Supra Sunsport SSV- SOLD
2017 Ram 2500 Crew Cummins 6.7L
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07-27-2020, 11:25 AM #2Senior Member
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- Nov 2019
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- 165
Yes I was prepared for heavy fuel consumption but it’s even more that I would have guessed. Considering the 4000-5000 lbs of extra ballast and the constant starting and stopping that wake surfing entails it makes sense. I would say I use 15-20 gallons per use which is usually 3-4 hours run time.
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07-27-2020, 12:35 PM #3
The raptors are really good on gas too. That consumption sounds a bit high, I see 2-3 gallons per hour with 50% of that time wakeboarding at 22mph or surfing at 11mph.
Sent from my iPhone using Tapatalk2021 Supra SA 400
2018 Supra SA 400 (SOLD)
Michigan
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07-27-2020, 01:14 PM #4Senior Member
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- Jun 2016
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- 288
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07-28-2020, 10:24 AM #5
How much Fuel are you burning?
3500# plus 500# lead, 3 crew 11.2mph surf
1750# plus 500# lead, 3 crew 22.5mph wakeboarding
Acme 2775 prop, 3500-3600 rpm surf 4000 rpm WB.
I got 24 hours this season and only used 60 gallons so far.
Typical lake day consists of 4-5 hours.
First 60-90 min is wakeboarding.
Second 60-90 min is surfing
Appx an hour cruising near idle to 5-6 mph for a breeze effect
4-5 hours cruising and sand bar.
Sent from my iPhone using TapatalkLast edited by larry_arizona; 07-28-2020 at 10:32 AM.
2021 Supra SA 400
2018 Supra SA 400 (SOLD)
Michigan
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07-28-2020, 10:56 AM #6
boat 'gas mileage' is a tough thing to pin down. as larry's post above there are way too many variables to stick a number to it.
last year we ran the z3 for 6 hours straight surfing, never shut it off. 8 guys swapping one after the other. used 38 gallons. most will say on a non surf-gate(think malibu) you will burn 5gph as an average(gated boats will burn more). we found towing a tube or pulling waterskiers would burn more. wakeboarding a tad less as we never ran the ballast full full.
all this push to surf tabs and equally weighting a boat should burn more fuel than listing as you're hauling around an extra 1500+lbs of water. it'll have an effect on it.
and apparently they boat in mumbai as well'06 Supra Launch 20SSV-gone but never forgotten
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07-28-2020, 11:46 AM #7Member
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- Jun 2018
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- 52
We will leaving the dock about 9am come back about 6/7pm usually atleast 7/10 people, coolers and 3600 of ballast and lead, we will be surfing probably 70% of the time stop and hangout or swim the rest we will burn about 30/40 gallons on said day and have the oj945 prop
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07-28-2020, 01:31 PM #8
I've never seen a DD including mine get less than 5gph so I imagine the surf boats consume more. Only reason I know is for calculating the fuel needed for the day as the gas gauge didn't provide any help.
1998 Mobius
310 HP PCM
SOLD
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08-03-2020, 11:47 PM #9Junior Member
- Join Date
- Jul 2020
- Location
- Tin Top, TX
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- 24
Mine is going through 4-5 GPH with small crew & mostly wakeboarding w/o ballast.
2017 Moomba Craz
Raptor 400
Surf Edition
2012 GMC Sierra 1500 SLT Z71
5.3L V8
Rough Country 3.5” Suspension Lift
Helwig Springs
1999 Moomba Outback (sold)
Gone but not forgotten.