90's 15 hp mercury Need Hp mods

[Six four]

Guy What kinda mods can be done to a 15 mercury to get better preformance. I need it to appear stock.

[Six four]

anyone got any quick tips

[hydroplay]

Play with the timing, stock carb jet is probably too rich, plug water outlet from powerhed into exhaust pipe area.

[AZOutlaw]

plug water outlet from powerhed into exhaust pipe area.

Bingo! :D

Also Bunker Hill has worked on the Merc 15's and may have some "other" tips

[Six four]

would this water outlet be under the powerhead?

[Seagull 170]

What does blocking the leg water outlet achieve?

Because when I've had them block accidently (not on a Merc) I burnt the paint on the leg didn't do the swivel rubbers a lot of good & melted around the top seal of a plastic bodied water pump.

[AZOutlaw]

There is a water outlet in the tower housing that needs to be plugged. Not associated with water pump for powerhead at all. Motor always needs water...tuner pipe doesn't.

[AZOutlaw]

tons of info I don't have to explain is in this thread...http://www.hydroracer.net/forums/showthread.php?t=17331&highlight=plugging+water+outlet+Merc

[Seagull 170]

Thanks Outlaw that answered my question, so removing the cooling on the tuner makes is seem shorter to the exhaust pulses raising the "powerband" by 100+ revs.