Outlaw 29 7.4/310HP Fuel Usage

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05-31-2006, 01:16 PM

#11

Dock Holiday

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Re: Outlaw 29 7.4/310HP Fuel Usage

For reference here are actual numbers off the labtop from this last weekend.

Merc 500 EFI's - 36 Baja - Full Fuel - 4 People - 90 Degrees

Engine RPM****Gallons Per Hour

850 Idle********2.36
1534**********3.27
2148**********7.97
2533**********12.36
3034**********16.53
3155**********17.07
3217**********18.92
3244**********19.56
3555**********20.56
3737**********22.96
3780**********24.58
4246**********27.31
4408**********29.73
4551**********33.03
4795**********34.35
4890**********35.36
5054**********37.06
5215**********38.38
5299**********39.12
5416**********40.24

Please note that this is per engine, X 2 for twins!

My Sweet Spot is around 3500 RPM's.

1 mile per gallon is about average. I don't think you will ever see 1.7 to 2 MPG.

Hope this helps

Last edited by Dock Holiday; 05-31-2006 at 05:38 PM.

05-31-2006, 01:50 PM

#12

BajaRunner

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Re: Outlaw 29 7.4/310HP Fuel Usage

Quote:

Originally Posted by Dock Holiday

For reference here are actual numbers off the labtop from this last weekend.

Merc 500 EFI's - 36 Baja - Full Fuel - 4 People - 90 Degrees

Engine RPM Gallons Per Hour

850 Idle 2.36
1534 3.27
2148 7.97
2533 12.36
3034 16.53
3155 17.07
3217 18.92
3244 19.56
3555 20.56
3737 22.96
3780 24.58
4246 27.31
4408 29.73
4551 33.03
4795 34.35
4890 35.36
5054 37.06
5215 38.38
5299 39.12
5416 40.24

Please note that this is per engine, X 2 for twins!

My Sweet Spot is around 3500 RPM's.

1 mile per gallon is about average. I don't think you will ever see 1.7 to 2 MPG.

Hope this helps

interesting dock. i wonder how much worse i get since im running carbs, or if there isnt much diffence.

what kind of speeds were you seeing with 4 people and full fuel?

I had 10 people, a full tank, 3 coolers and a generator and was running 71-72

05-31-2006, 02:05 PM

#13

Dock Holiday

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Re: Outlaw 29 7.4/310HP Fuel Usage

Quote:

Originally Posted by BajaRunner

10 PEOPLE???????????????

3 Coolers????????????????

Generator????????????????

Get rid of the above and you have an 80 MPH boat!

We saw 76 on the GPS Saturday testing. I have not mentioned this, but the reason we were testing is I had a distributor bolt loose on the port engine, timing got way out of whack and I burnt a lot of valves. Had to rebuild the top end on that engine and I just got her back together last Thursday night around midnight.

As for EFI vs Carb I have no clue? They should be pretty close to one another I would think.

05-31-2006, 07:52 PM

#14

SANLEONKID

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Re: Outlaw 29 7.4/310HP Fuel Usage

Quote:

Originally Posted by oklaoutlaw

i THINK IF YOU ARE WORRIED ABOUT FUEL STICK WITH A SINGLE.

I'm a CFO for a hospital and its just a VERY BAAAAADDD habit..... I QUESTION EVERYTHING. I am just curious of what these things run. I had a 27 Regal with 260hp/LT1's and they sucked the gas. Hoping in the past 12 year s tat the milage is getting a bit better.

05-31-2006, 08:00 PM

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BajaRunner

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Re: Outlaw 29 7.4/310HP Fuel Usage

Quote:

Originally Posted by SANLEONKID

Id say it would be real similiar.

05-31-2006, 08:02 PM

#16

Dock Holiday

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Re: Outlaw 29 7.4/310HP Fuel Usage

The one big problem I would have running 30 MPH down the lake is the ride. I'm not even on plane good at that speed.

The faster my boat runs, the better the ride. It is just no fun and you are not on top of the waves/wake at those speeds.

I cruise at around 3500 RPM between 50 to 55 MPH, but 65 to 70 is MUCH better!

I would agree with the boat test you posted above. That would be pretty accurate.

06-04-2006, 05:53 PM

#17

JasonSmith

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Re: Outlaw 29 7.4/310HP Fuel Usage

Quote:

Originally Posted by BajaRunner

I would think you would get a lot better than that. those are fuel injected right?

Yea, they are injected. I think that my memory is cloudy because I took that trip I mentioned on a Sunday so I had a Friday & Saturday of boating in front of that.
I had to verify it with my Wife, but she said we only burned a little over a 1/4 tank for that run. Either way it is what it is. I could care less about mileage. They put fuel gauges in boats & trucks. When they get close to reading "E" I buy more fuel untill they read "F".
I then get my CC statement & say "oh F"!

So to re-clarify the origonal question. I don't nkow how much gas I "use" in per miles to the gallon basis. I know that a typical weekend on Table Rock I burn about 75-100 gallons of gas.