A question about TWINS
10-02-2014 | 11:17 PM
#24
Neno the mind boggler
Joined: Sep 2001
Posts: 13,080
Likes: 320
From: toledo oh
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
__________________
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! )
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
#25
Charter Member # 55
Joined: Oct 2000
Posts: 20,252
Likes: 2,499
From: Omaha/LOTO
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 | 04:57 AM
#26
Registered
Joined: Oct 2004
Posts: 2,670
Likes: 651
From: Clayton NJ
, go with the biggest boat you can.
10-03-2014 | 08:49 AM
#30
Registered
Joined: Feb 2005
Posts: 4,400
Likes: 25
From: Michigan
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.
