retiredff
Well-known member
I have a 92 9.9 Merc short shaft on a 1448 alum jon, no bulky decks or anything that added excessive weight. Just normal gear. With 2 180 lb adults I can only get 4300 RPM, I can't remember the RPM with just me but it is between 4.4 & 4.7K. The manual says normal WOT RPM is 5000-6000. I have the gas tank installed up front and I have a clear fuel filter installed after the bulb and at WOT there is very little fuel in it.
Do I need the 2nd fuel filter?
What size fuel line should I use for a 16' run?
Am I fuel starving the motor?
Overall, the motor seems to run fine, the RPM is just low.
Any suggestions on why the low RPM? At WOT my gps speed w/2 adults is 11-12, just me it's 17-18. The prop is standard for that model 3 blade 9x9, I found a 9 1/4 x 9 replacement, would it help changing the pitch?
Any Info appreciated.
If everything sounds normal, my only option is a 20 or 25 HP motor. I normally fish large lakes and @ 11 mph, it takes awhile to get anywhere. The boat is rated at 25 HP.
Tony
Do I need the 2nd fuel filter?
What size fuel line should I use for a 16' run?
Am I fuel starving the motor?
Overall, the motor seems to run fine, the RPM is just low.
Any suggestions on why the low RPM? At WOT my gps speed w/2 adults is 11-12, just me it's 17-18. The prop is standard for that model 3 blade 9x9, I found a 9 1/4 x 9 replacement, would it help changing the pitch?
Any Info appreciated.
If everything sounds normal, my only option is a 20 or 25 HP motor. I normally fish large lakes and @ 11 mph, it takes awhile to get anywhere. The boat is rated at 25 HP.
Tony