Guy Shepherd wrote:
My brother has just bought a Glastron GT150 with a Johnson 85hp V4 (2
stroke) outboard (circa 1975-1978) and whilst he is very pleased with
the combination, the fuel consumption seems a little startling.

Anyone have any idea what the approximate fuel consumption ought to be
on this engine at full throttle? I guess it would be better at more
moderate throttle settings, but where's the fun in that!?

Are the modern equivalents of this engine much better in terms of fuel
consumption?

Cheers

Guy

8-9 Gallons per hour is about right at WOT. Figure 6 gph in mixed use
cruising/skiing starting/stopping.

At partial settings, that engine is quite good on fuel... it is a
de-tuned (smaller carbs) and slightly smaller displacement (92.6 vs 99.6
CID... from memory...) version of the 115/135/140 hp V-4's. The 85's
also seem to run better/longer at idle speeds w/o loading up the plugs.

Rob