Were the two props of the same design, diameter, material, brand, etc...
If your making 4400 now a 21 of the same design and everything should be at
4700.
Did you have to buy the 23 or did the dealer swap it for the 21?
If it was not the right prop to begin with the dealer should have swapped
for free.

Fuel economy should be between 3 and 4 mpg running at 3000 to 4000 rpms.


--
Tony
my boats and cars at http://t.thomas.home.mchsi.com

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"seeray28" wrote in message
...
well I put the 23 pitch prop on , the tach only went to 4400 with only 2
people in it. Thats maybe 325 pounds of people, the fuel milage was still
crappy and the engine sounded like it was lugging. so now Im back with the
21 pitch prop. Does anyone know if there is a 22 pitch prop available?

"seeray28" wrote in message
...
Hey all I just purchased a '05 Bayliner 175 with the Merc 135 engine. I
have
a few questions about the warranty.

The engine doesnt like to idle in gear when it cold after warmp its
fine,
Should I just let it run for a few minutes to warm up or is there an
adjustment at the choke that I can do, if I do make an adjustment will
this
screw with the warranty.?
( the only thing Im worried about on the warranty is the outdrive and
the
electrical items on the engine)

When the throttle is at 3/4 and the boat planed out the revs are at 4500
rpm. can I put a 23 pitch prop on with out messing with the outdrive
warranty?

Last but not least. This boat has a 21 gallon fuel tank. at 3k rpm its
burning about 5 gallons an hour. does this sound about normal? if so are
there any acceptable safe ways of carrying an extra 5 gallons on gas so
that
I can extend my drive time.
All in all this is a great little boat. decent speed good handling nice
ride, its just a wee bit spartan ( no radio yet and not much in ways of
storage) . But its nice to know that when we head down the river we stand
a
95 percent chance of heading back up under our own power

thanks for any and all replies
Steve