Water Housing Merc 650 ?problems

1964 MERC 650 60 HP START SERIAL 167993

I WAS REPLACING THE WATER IMPELLER , EVERYTHING WAS GOING FINE UNTIL I WAS ALMOST DONE. I WAS TIGHTEN NUTS 1/4 AND 5/8 ON HOUSING FROM A KIT A BOUGHT /Water Pump Kit (Upper)18-3517 Upper Pump Housing Mercury 46-96148A5/ AND I TIGHTENED THE NUTS 1/4 , 5/8 TO 30LBS. , 40LBS PER TWO DIFFERENT MANUALS WITH TORQUE WRENCH AND THE PLASTIC HOUSING SPLIT ON THE 5/8 NUT IN FRONT.

IT MASH THE FRONT OF HOUSING AND SPLIT TOO. I CAN GET THAT REPLACED EASY.

MY QUESTION IS DIFFERENT TORQUE SPEC FOR THESE HOUSING THEN THE OLD MERCURY PART?

IS MY NEW TORQUE WRENCH BAD, I HAVE USED IT SEVERAL TIMES -NEVER SET THAT HIGH WITH NO PROBLEMS.

DOSE ANYONE HAVE ANY INSIGHT IN MY PROBLEM ?

Re: Water Housing Merc 650 ?problems

Water pump bolts 1/4"==30 inch lbs and 5/16"==40 inch lbs.
KEY WORD IS INCH

Re: Water Housing Merc 650 ?problems

thank you , i was being dumb 2.5 foot pounds/ 3.33333 foot pounds is where i should set the torque wrench too. i never convert inch pounds to foot pounds.

he is site to convert inch pounds to foot pounds so any newbies don't make the same mistake i did:
http://www.srtorque.com/torqcon/tcip.html