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View Full Version : Gas Usage 310 HP vs 385 HP


georgea0731
06-06-2006, 10:13 PM
Anyone know how much different the GPH or some measurement between the basic engine and the LQ9?
Please email amonette516@comcast.net
Thanks

rodltg2
06-06-2006, 10:25 PM
i dont know thwe differecne but the lq9 is a hog...

MarkP
06-06-2006, 10:40 PM
I would bet itís a big difference.. I think thatís the one ďoptionĒ that would stop me from buying a boat..

Donít want it.. Donít need it..

SteveO
06-06-2006, 10:58 PM
Rod, what kind of GPH did you get out of your LQ??

erkoehler
06-06-2006, 11:03 PM
The only thing that worries me about the LQ 9 is the premium fuel "requirement".

6ballsisall
06-07-2006, 12:42 AM
Many a people run their LQ9 on mid grade.

Somewhere on here MYMC had a breakdown of the GPH by each motor. I was shocked how little of difference there was in the enginges. Obviously the little ones used less but when looking at peak HP GPH rating and the powerband each motor has to run for Slalom and footing speeds the value of the MCX and LQ9 started looking really good.

jpattigr
06-07-2006, 12:54 AM
I have a LQ9 and it is not bad on fuel unless you put the hammer down when cruising. Last spring boated for a week on lake Powell and my boat was within 10% or so what a 18' Larson with 150 Ficht DI OB and a Tahoe 18' foot IO used everyday. If you cruise at 30 to 34 mph the burn rate is good, WOT and the engine is thirsty.

erkoehler
06-07-2006, 12:56 AM
Have you ever run 87 or 89 octane? Or is it 100% 93?

NORTHERN LIGHTS
06-07-2006, 06:26 AM
i dont know thwe differecne but the lq9 is a hog...
With good throttle work the lq9 is about 10% greater consumption. That is a VERY rough estimate. As someone mentioned, at wot that engine will eat you up( and your wallet). I've said it before and i'll say it again, there really is no need for that engine. Yes, i have one, but my choice would have been the 350hp. The friggin premium fuel makes your backside pucker every time you insert the nozzel.(no pun intended).
Now when I say there is no need i mean there is no need in a ps 197. Larger boats could easily justify that increase in horsepower.
If you have a choice(i.e. your ordering a boat) I think the 350 hp is more than adequate. Plus the 8-9k option for the price of the engine is sick. My tt came with the lq9. When i bought the boat(it will be one year june 17th) it had every option including the lq9.
Yeah, it sucks putting premium in but that's life.
No- I only run premium. some people switch every third tank. I don't think it's worth the 15$ savings every third tank to have your engine start knockin.
My thoughts as an lq9er...

rodltg2
06-07-2006, 11:42 AM
not only is the premium expensive but its not always available at marinas. although i didnt really bother me as much since i primarly used the boat on a private lake. however on a houseboat trip for a week , i had to carry octane booster.
the gas consumption seemed like a huge difference to me compared to my previous and current boat. i was always worrying about frying the fuel pump so it seemd like i was filling it up constantly. if the boat is used on a private site i think its no big deal, but on public lakes where its fun to race around, it gonna hurt your wallet..

Leroy
06-07-2006, 11:46 AM
I would also bet the mileage you get is very dependent on your driving style.

rodltg2
06-07-2006, 11:47 AM
I would also bet the mileage you get is very dependent on your driving style.


indeed, but when you have that much power, its hard to hold back..

NORTHERN LIGHTS
06-07-2006, 12:01 PM
indeed, but when you have that much power, its hard to hold back..
thats the thing--with so much power you tend to ram that throttle just for the "effect" of being thrown into your seat. the kicker is your probably only going 100 yards or so and it just cost you 2$!!!

jpattigr
06-07-2006, 12:08 PM
I always run the good stuff, and I have found that most marinas are selling at least mid grade on the docks.
I am like NL and bought my boat as a 1 year old, I would not have paid the huge uptick for the motor but have enjoyed owning the boat for the last 3 1/2 years with no issues.

MYMC
06-07-2006, 12:55 PM
Fuel consumption differences between the engines is negligible...unless you are running at or close to WOT.

6ballsisall
06-07-2006, 01:00 PM
Fuel consumption differences between the engines is negligible...unless you are running at or close to WOT.

With that being said you'll never hear my say, "WOW I have to much power! :D "

gene dobies
06-07-2006, 01:01 PM
Hey, if you're ordering, go with the L18, 450HP, only uses 89 octane.

6ballsisall
06-07-2006, 01:12 PM
Hey, if you're ordering, go with the L18, 450HP, only uses 89 octane.

ICBW but I got the feeling that option wont be around for much longer at all..... ;)

MYMC
06-07-2006, 02:29 PM
ICBW but I got the feeling that option wont be around for much longer at all..... ;)
True and it will be a sad day...there is no substitute for cubic inches!

6ballsisall
06-07-2006, 04:35 PM
True and it will be a sad day...there is no substitute for cubic inches!

Whats the saying: "There's no replacement for displacement" :D

So when is MC going to offer the offshore race motor for our boats. You know the ones used in the loud arse cigarette boats? 700hp beasts. That would be fun in a 197 :D

MYMC, you got mail ;)

skipete
06-20-2006, 10:45 PM
I have Rods old boat, it burns (lq9) 2.7 gals per hour, personally, I think this is way below the norm, and it runs like a bat out of hell. I demo'd a 197 with a 350hp motor,and was way dissapointed with the power. The 197 is a large hull, it needs the extra power. The only problem is the 21 gallon tank, which really only holds 19, thats why Rod was always filling up.
If anyone else has charted their fuel consumption, I would like to hear what the 310 and 350 hp's burn.

6ballsisall
06-20-2006, 10:52 PM
I have Rods old boat, it burns (lq9) 2.7 gals per hour, personally, I think this is way below the norm, and it runs like a bat out of hell. I demo'd a 197 with a 350hp motor,and was way dissapointed with the power. The 197 is a large hull, it needs the extra power. The only problem is the 21 gallon tank, which really only holds 19, thats why Rod was always filling up.
If anyone else has charted their fuel consumption, I would like to hear what the 310 and 350 hp's burn.


Wow if thats right I am sad now. I guarantee my MCX burns more than that with modest skiing use.

Hoff1
06-21-2006, 07:50 AM
It's all relative to your speed and ballast. I burned up 17 gallons in under 3 hours before. Had much weight in the boat though.

skipete
06-21-2006, 10:51 PM
I have a fuel dock on my lake, and have to track gallonage usage, to pay my portion of the fuel bill. 3 tanks now all at 2.7 to 2.8 per hour. I was very impressed. Keep in mind, this is wakeboarding and slalom probably 50/50, with the speed runs after every set. Love the power.
Thanks Rod!