I guess ours was a 160. That was back in 1976 so memory is a little off.
I still don't think your going to get over 2 miles to the gallon running
wide open and it may even be closer to 1.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com
"trainfan1" wrote in message
...
tony thomas wrote:
We used to have a GT150 w/ a Merc 115 and it would run about 42 mph wide
open (if I remember right). My guess is yours runs about 38 mph wide
open if that much. Given that - at 9 gallons per hour that would equate
to a little over 4 miles to the gallon. I really doubt it will get that
at wide open. Probably 2 miles per gallon if your lucky. Now it should
get 4 or better at about 3/4 throttle or less.

New engines do get better fuel economy. A new 90 (they don't make 85's
any more) will also have a lot more power as it is rated at the prop and
yours is rated at the powerhead.

If you really want some fun (I think that boat is rated for a 135) get a
1990's Evinrude 120 V4. That will wake it up.


I think the GT150 is only rated for 85 or 90 hp.

Checking classicglastron....

Yup 90 hp on the GT150, 120 hp on the GT160.

Rob