31SS Speed and Fuel Burn
 

I have been looking at a used 31SS with 502 MPIs.
What can I expect for Cruse, Max Speed, and fuel
burn on these engines?

Re: 31SS Speed and Fuel Burn
 

I had a 99 31 with 502 mpi's and it ran right around 78 mph with low fuel and trimmed out.
Not sure on gph,but it wasn't too bad......very nice boat!

Re: 31SS Speed and Fuel Burn
 

Thanks,

That is good speed! I want a range of 200 miles.
As I remember Jay Ross tole me that the 502's got
1.5 MPG which for me that will be good enough.

Re: 31SS Speed and Fuel Burn
 

I'm in a 31 Formula w/ 502's. I willing to bet that 78 on speedo is closer to 72-73 on GPS. (that is what mine does) The fuel burn is in the correct range, but that depends on how hard you run it.

Re: 31SS Speed and Fuel Burn
 

I had a 98 31ss with 502 MPI's, labbed props and the most i ever saw was 71 on GPS. I had an Arch on my boat also, so, maybe a few more pounds.

Also, I took a run from Ft. Lauderdale to Key West, about 190 miles, I think I cruised about 50 mph and my gas burn was a gallon per mile.

Re: 31SS Speed and Fuel Burn
 

my guess is you will burn all the fuel you put in it.....just buy it and start paying the arabs! :D

Re: 31SS Speed and Fuel Burn
 

Oh I will burn the fuel. When I had my 28SS I put
about 250 hours a year on it. My main reason for the
fuel burn question is that most of my long runs are
150 miles, and I don't want to stop for fuel.

How are your engines coming?

Re: 31SS Speed and Fuel Burn
 

Real slow Kaamas are on the dyno now mine are next, the 31's carry 150 gallons of fuel you can run 150 miles easy. :p