Gph ,150hp johnson ocean runner

[KEYWESTEXPRESS]

Is there any way i can determine how many gal/hr i burn on my 1997 twin johnson 150hp ocean runners if i run 3500 rpm's, without installing a flow meter.

 

[boobie]

Re: Gph ,150hp johnson ocean runner

They will burn approx 15 gal/hr at WOT though.

 

[Chinewalker]

Re: Gph ,150hp johnson ocean runner

That's 15 gallons per hour EACH at wide open throttle...

 

[Chris1956]

Re: Gph ,150hp johnson ocean runner

I burn about 20-24 gal/30 miles (1.2- 1.5 MPG) on my single '98 150HPV6 Johnny Oceanrunner, while on a fishing trip at 3200-3500RPM. 21 foot Seaswirl.

What kind of boat do you have?

 

[Fl_Richard]

Re: Gph ,150hp johnson ocean runner

Is there any way i can determine how many gal/hr i burn on my 1997 twin johnson 150hp ocean runners if i run 3500 rpm's, without installing a flow meter.

Ive got twin 1995 150s with flowscan gauges on a Wellcraft 238 Coastal. They get .8 to 1.8 KMPG (never seen 2.0) At WOT I burn 32GPH @ 5800RPM and 42KPH and at 3500RPM about 20GPH - 3700 is my sweet spot and I get about 22GPH there at 34KPH. (About 1.5kmpg)

This is all in the Gulf with ideal conditions. Nasty chop will kill the mileage.

 

[metriccrescentwrench]

Re: Gph ,150hp johnson ocean runner

3700 is my sweet spot and I get about 22GPH there at 34KPH. (About 1.5kmpg)

And that's more influenced by your hull than by the engine(s). Someone with identical engines on a different hull would have different results.

 

[Fl_Richard]

Re: Gph ,150hp johnson ocean runner

Yup!