H2O Pump Change Frequency

[mgerle]

How often do you guys change your water pumps?<br />ie: I've got an '81 Merc Black Max, only 500 hrs since rebuild, never changed the h20<br /> pump, only plugged it off once....<br />Q.Could not changing it often on a high output engine cook the top end of the motor, head gasket etc...?<br /> I'm thinking since I'm on my second head gasket leak in 5 yrs, there is connection to my seeing water dripping at high speed... I love you guys<br />marc in calgary ab.canada

 

[JB]

Re: H2O Pump Change Frequency

Howdy, Marcus.<br /><br />Though many last longer without failure, the water pump impeller should be changed routinely. Some sources say annually, some each 2 years.<br /><br />Because they are rubber and age whether used or not, engine hours don't matter.<br /><br />If an aged impeller starts to come apart and plugs parts of your water jacket you have serious trouble.<br /><br />Good luck.

 

[dick]

Re: H2O Pump Change Frequency

marcus who have a high pressure /low volume type pump , for those type I would change it every year,perferrably in the spring when you run it up for the first time that year then you know the pump is good for the year.