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24 pitch prop, 5900 rpm, 51 mph with 150 xr6. If tachometer and speed (gps) are correct. You have alot of slip somewheres

Wow something doesnt seem right

Might want to post this in the 3.0 litre high perf section. Just a few guesses, low oil level in engine mounted oil tank, water in fuel sensor, low battery voltage. Usually one of those

Thanks for the input. Ill see how it goes with the trophy and look at some wot rpm then make the final prop decision

Im running a brucato acu right now. Just built the motor and have about 10 hrs on it. Its time to start playing with props now. Mine is also a 1997 promax. How many holes did you have plugged on your...

1994 209 with a 225 promax efi with hydraulic plate. Anyone have any luck running a 25 pitch trophy small hub. If so how many pvs plugs do you guys have removed. Been running a 24 pitch tempest and...

Think your trim system is slowly bleeding down?

No smartcraft gauges?

Ooo yea any leaks on this system means trouble. Premixing is probably best on a motor at this age

1) oil tank in boat is pressurized by engine crankcase pressures forcing oil to the engine oil tank. ANY air leak in the system or plugged oil filter will stop the tranfer of oil to the engine oil...

All xr6 motors were carb engines. The xri was the injected version.

The XR6 is a great motor. Bypassing the oil injection is a great idea.all i have to say is have the engine properly checked by a certified mercury tech before buying along with a test run. Then...

Ok thanks for the quick reply. I figured you would have mentioned it if i had too. Thanks again for sll the help

Got a 1997 merc promax 225 that you cut my front half. Am i supposed to do anything with my reed cages before assembling the engine or will they still clear the back of the slots?

Be careful. Some merc 4 strokes are not supposed to have primerbulbs.

Alright guys just an update. Made 2 quick runs last weekend and got 18 psi @ 6000 rpm. Never saw that in a long time. Temp stayed down and waterpressure stayed up. Scoops seem to have made the...

2 piece

Sounds like a good idea. I have an temp gun i can double check with. In you guys opinion what is the most accurate gauges i can run on this motor. Both w/p and temp are teleflex gauges right now but...

They also have a flat filter in the bottom of the oil tank that is a flat filter. Yes remove the screws. Good luck on the RUDE board. http://www.bassboatcentral.com/smileys/thumbsup2.gif

This gauge has been changed once before. At idle i can watch when my thermostats open (running the 143 stats) which is exactly half mark on guage. My temp goes up to the 3/4 mark with my pressure at...

On the oil tank in boat. Find the oil supply hose and remove the cap. The filter is on the bottom of the pickup tube

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Could be a lowerunit seal leaking ( high performance merc gear lube is dark green in color)

Cheap prices tend to scare me a bit. Premium plus alllll the way

You the man don. Ill let you guys know how it goes. Thanks alot