gallons per hour on chrysler 318's

circle hook

Petty Officer 1st Class
Joined
Dec 6, 2007
Messages
271
hello i have a "1972" 32 foot 320 luhrs with twin chrysler 318's, and was wondering if anyone had even a close idea on how many gallons per hour she burns at 1,000 rpm, 2,000 rpm, and 3,000 rpm. Thanks Bob
 

HT32BSX115

Supreme Mariner
Joined
Dec 8, 2005
Messages
10,083
Re: gallons per hour on chrysler 318's

hello i have a "1972" 32 foot 320 luhrs with twin chrysler 318's, and was wondering if anyone had even a close idea on how many gallons per hour she burns at 1,000 rpm, 2,000 rpm, and 3,000 rpm. Thanks Bob


Howdy,


There is simply no way to know what the engine would burn at those RPM's becuause there's noway to know what your throttle position(and subsequently the throttle plate position) or what the load on the engine is

The best way to determine it would be to conduct an experiment using measured amounts of fuel or,

Another way would be to install a fuel flow gage on the boat like the Lowrance model below.

Lowrance EP 60R Fuel Flow Sensor - LOWRANCE | Marine Electronics

6-5026837.jpg



I have the one above on my boat.


Regards,


Rick
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: gallons per hour on chrysler 318's

If you already own the boat you should have some idea of its fuel consumption. Fill the tank(s) run it 3000 rpm for an hour and then refuel. You would have your answer for 3000 rpm. And since you own the boat, it really doesn't matter they burn because you are stuck with what you have. If you plan to make some long trips where frequent fueling is needed, then you really need a fuel flow monitor so you can have an idea what the fuel burn rate is at any given rpm/speed.
 

circle hook

Petty Officer 1st Class
Joined
Dec 6, 2007
Messages
271
Re: gallons per hour on chrysler 318's

you guys are right I am going to buy a dual flow scan setup I have a single on another boat and it is accurate to within 1% my issue right now is that just buying this larger boat and I need hoses, belts, battries, and so on I was only wondering in the ruff what the fuel consumption was at different rpm's I know all boats are different and wind & tide are different, and the number of people on board are different and the list goes on. but my basic question was only if anyone had a fuff idea that's all thanks Bob
 
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