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  1. #1
    Registered
    My Boats:
    252SS sold it, want 400SS
    Join Date
    Jan 2012
    Location
    Saint Charles, IL
    Posts
    42

    400SS ILMOR 725 numbers

    400SS Ilmor MV10 725 Prop Hering 17 X 23 X 16 6BLD turning out

    RPM MPH GPH MPG RANGE
    AVG AVG

    800 4.5 5.4 0.83 179
    1000 5.8 7.8 0.74 159
    1500 8.1 10.0 0.81 174
    2000 9.2 18.0 0.51 109
    2500 14.2 24.0 0.59 127
    3000 19.4 27.6 0.70 151
    3500 35.1 38.4 0.91 196
    4000 42.4 54.0 0.78 168
    4500 51.4 76.0 0.68 145
    5000 57.0 88.0 0.65 139
    5500 62.6 100.0 0.63 134
    6000 66.9 109.0 0.61 131
    6300 69.9 115.6 0.60 130

  2. #2
    Diamond Member #001 Charter Member C_Spray's Avatar
    My Boats:
    Formula 382 w/600 Innovations; 28 Batboat w/Ilmor 725 Indy
    Join Date
    Oct 2000
    Location
    Upper Chesapeake Bay!
    Posts
    4,717
    .91 mpg at 3500 in an 18,000 lb boat is pretty impressive. 69.9 mph is even MORE impressive! Your boat?
    Retired! Boating full-time now.

  3. #3
    Registered jeff32's Avatar
    My Boats:
    boatless for now...
    Join Date
    Jun 2004
    Location
    St-Hyacinthe, quebec, canada
    Posts
    4,945
    Impressive positive numbers!!! WOT gallon per hour also !!!!

  4. #4
    Registered Formula311-SR1's Avatar
    My Boats:
    1989 Formula 311
    Join Date
    Sep 2003
    Location
    Fox Lake, Illinois
    Posts
    378
    Wow!
    Very impressive

  5. #5
    Registered
    My Boats:
    Ilmor
    Join Date
    Oct 2011
    Location
    Plymouth, MI
    Posts
    13
    Quote Originally Posted by C_Spray View Post
    .91 mpg at 3500 in an 18,000 lb boat is pretty impressive. 69.9 mph is even MORE impressive! Your boat?
    Chuck, on the day of the Boating Magazine test the boat was actually closer to 21,000 lbs (fully loaded tanks). And we did break 70 that day with similar fuel burn figures!

    Here's the article from that day: http://www.boatingmag.com/engines/st...lock-offerings
    Last edited by IlmorGirl; 03-12-2012 at 02:12 PM.

  6. #6
    Registered
    My Boats:
    252SS sold it, want 400SS
    Join Date
    Jan 2012
    Location
    Saint Charles, IL
    Posts
    42
    Not my boat, I have been in contact with the factory on all numbers for Power options, doing my HW so I know which power plant I am going to choose when I order a new 400SS. Waiting on second set of numbers for th D6-400 have them for the G6 props just waiting for the G7 numbers when the weather breaks and Formula has time. The numbers above were the average not the highs and lows. But regardless 70mph and not too far off the 525 numbers for GPH and MPG for RPM comparision. Merc 525EFI @ 5kRPM 56.7mph, 75gph, .76mpg, @ 3500RPM 39.6mph, 43.2gph, .92mpg

    Would love to have those engines in my 400 but looking for distance cruiser not go fast. so far the D6-400 is 50mph should go 53/54with G7?

  7. #7
    Registered aquaforce's Avatar
    My Boats:
    Three Birds !!! 242SS, 242LS and 357 SR1 Stroked
    Join Date
    Aug 2005
    Location
    Stockbridge, Ga.
    Posts
    926
    Quote Originally Posted by IlmorGirl View Post
    Chuck, on the day of the Boating Magazine test the boat was actually closer to 21,000 lbs (fully loaded tanks). And we did break 70 that day with similar fuel burn figures!

    Here's the article from that day: http://www.boatingmag.com/engines/st...lock-offerings


    Is that your pic, sitting on the boat in the article?

  8. #8
    Registered aquaforce's Avatar
    My Boats:
    Three Birds !!! 242SS, 242LS and 357 SR1 Stroked
    Join Date
    Aug 2005
    Location
    Stockbridge, Ga.
    Posts
    926
    Quote Originally Posted by F3504x4ps View Post
    Not my boat, I have been in contact with the factory on all numbers for Power options, doing my HW so I know which power plant I am going to choose when I order a new 400SS. Waiting on second set of numbers for th D6-400 have them for the G6 props just waiting for the G7 numbers when the weather breaks and Formula has time. The numbers above were the average not the highs and lows. But regardless 70mph and not too far off the 525 numbers for GPH and MPG for RPM comparision. Merc 525EFI @ 5kRPM 56.7mph, 75gph, .76mpg, @ 3500RPM 39.6mph, 43.2gph, .92mpg

    Would love to have those engines in my 400 but looking for distance cruiser not go fast. so far the D6-400 is 50mph should go 53/54with G7?


    Those Diesel numbers in the 300 mile range is very interesting to me too. We are back and forth on the fence between a 382 and 400 but the long range is a premium feature for the 400 as much as the speed is for the 382. Then to complicate the mix throw in the Ilmor's.

  9. #9
    Diamond Member #001 Charter Member C_Spray's Avatar
    My Boats:
    Formula 382 w/600 Innovations; 28 Batboat w/Ilmor 725 Indy
    Join Date
    Oct 2000
    Location
    Upper Chesapeake Bay!
    Posts
    4,717
    The Ilmors are an incredible package, but really are more suited to the 382. If you haven't ridden on a diesel 400SS, you're in for a treat. The torque of the diesels is amazing. Easily the fastest SS option to 40 mph and incredible fuel mileage. The Volvo Penta package is well-proven, and doesn't smell or sound like diesels. I'm going for the diesel package when I order my 400.
    Retired! Boating full-time now.

  10. #10
    Registered aquaforce's Avatar
    My Boats:
    Three Birds !!! 242SS, 242LS and 357 SR1 Stroked
    Join Date
    Aug 2005
    Location
    Stockbridge, Ga.
    Posts
    926
    No I haven't ridden on a diesel 400 SS yet. I'm looking for an opportunity to get that feel.

    I rode the 382 with 700NXT and liked it. We require a generator and buying used there aren't that many boats to choose from much less find with the genny. Several 700NXT in the poker series are out there but none with a genny.

    We wonder how much the shower is key for over-nighting. That is where the scales seem tipped to the 400.

    Both are great boats.


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