A question about TWINS
10-02-2014, 10:48 PM
#21
Registered
i am getting about 1.4 mpg with my 330l with 454 mags.. I dont fill her up, I just keep a 1/4 fuel and add what I think I will burn based on a couple trips.. Ends up at or just above 1/2.
10-02-2014, 11:17 PM
#23
I've tracked nearly all the boats I've had religously on gps. Fill up, reset trip, track miles. These were tracked over entire seasons. I don't lay on the sticks but I do like to run 'em so these numbers reflect a nice broad range of operation. some recent examples
260 Chris Scorp w/twin mild 350's - 1.4 mpg
34 Scarab III w/ stock 454 mags - 1.3 mpg
38 Donzi ZX w/525 SC's - 1.12 mpg
moral of the story figure 1 mpg with a little reserve
260 Chris Scorp w/twin mild 350's - 1.4 mpg
34 Scarab III w/ stock 454 mags - 1.3 mpg
38 Donzi ZX w/525 SC's - 1.12 mpg
moral of the story figure 1 mpg with a little reserve
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Throttles- Cleveland Construction 377 Talon
08 OPA Class 1 National Champion
08 Class 1 Geico Triple Crown Champion
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10 OPA Class 1 National Champion ( happy now Ed! )
Throttles- Cleveland Construction 377 Talon
08 OPA Class 1 National Champion
08 Class 1 Geico Triple Crown Champion
08 OPA High Points Champion
10 OPA Class 1 National Champion ( happy now Ed! )
Last edited by glassdave; 10-02-2014 at 11:22 PM.
10-03-2014, 12:27 AM
#24
Charter Member # 55
Charter Member
My twin 502mpi's in my 32 AT get better mileage than my single 525SC did in my 28 Pantera.
502mpi's burn about 34gph at WOT. At 3500rpms, they burn about half that.
MPG will be determined by boat weight and hull efficiency.
502mpi's burn about 34gph at WOT. At 3500rpms, they burn about half that.
MPG will be determined by boat weight and hull efficiency.
10-03-2014, 08:49 AM
#29
OK so this is probably a very cut and dry question but, How much fuel do TWINS (502MAG) actually burn? Now this could be perceived as running wide open and that would be not too long, maybe a day. Basically in a nutshell, I found a smoking deal that is too hard to pass up on a '97 Baja 29 Outlaw with TWINS and low hours from the original owner. The main thing that scares me is the 146 gallon fuel tank and having to fill that sucker up. My boating consists of a few hours of cruising around, a few WOT bursts and the rest of the time, anchored and tied up with friends. This would be my first performance boat and do not want to bite off more than I can chew. I was originally looking at the 25-27' range with a single until I found this Outlaw at a smoking deal ($35k with 240hours in excellent condition). What are your thoughts?
As stated, the 502 EFI burns about 33-35 gph at wide open. They will burn about 18-20 at 3500 rpm. If the boat does 50 mph at 3500 rpm, you are getting 1.25 mpg. So, you could go 50 miles at a 3500 cruise and burn 40 gallons. The amount of WFO blasts will increase the fuel consumption.
10-03-2014, 09:00 AM
#30
Beak botr
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Figure you will average about 1mpg. Sometimes better and sometimes worse but averaged out with idle time and everything else if you go out for the day and run 100 miles you will burn about 100 gallons. Asking price seems pretty congruent with those around the Midwest. I wouldn't call it a steal but if everything checks out and you get into it for low $30's it seems like a decent value.
Good luck.
Good luck.
