merc 115hp (1500) 1970

[joe williams]

i need proper cooling system routing for this eng. also if someone has a wiring schematic for the eng. on the water pump impeller rotation should they sweep to the rear of clockwise rotation or should they face to the front of rotation, i am not getting water to the eng,also where does the hose for the wep hole connect on the block.

 

[skier]

Re: merc 115hp (1500) 1970

The water pump veins should sweep behind the rotation. The tattle tale hole should connect to the lower part of the head I believe. I don't have mine at the house so I can't go look.<br /><br />Craig

 

[skier]

Re: merc 115hp (1500) 1970

One more thing. Your motor is a 150hp not a 115. At the prop you are getting about 130 - 135hp.

 

[joe williams]

Re: merc 115hp (1500) 1970

thanks merc140 now where is t/stat best i can tell is in the exhaust plate which shows to be on lower end of eng.

 

[joe williams]

Re: merc 115hp (1500) 1970

i broke my serial number 2931088 shows 1350 not 1500 which is a l6 135hp, sorry about wrong info in first post

 

[skier]

Re: merc 115hp (1500) 1970

Correct about a 1350 being a 135hp (About 121.5hp at the prop). If t/stat means thermostat? You motor doesn't have one. Thermostats were not used until the mid to late 80's. If you look, some outboards continue to pump water after the motor is shut down, those are the motors that have thermostats.<br /><br />I sure hope this helps.<br /><br />Craig

 

[joe williams]

Re: merc 115hp (1500) 1970

thanks for all your info. i removed the power head last night and found dirt dobbers in the weep hose tube stopping it up.heck of way to find the problem but i needed to do other things to it now i have it where i can see everything and learn as i go. going thru mid life started with road bikes 2 years ago now in boats, ain't life grand???????