adding e/m raw water pump,questions.

[kellydee]

Looks like I have to switch to an engine mounted raw water pump.I know you use a block-off plate at the transom but,do you remove the impeller from the outdrive or the whole water pump housing ?What about the hose from the bellhousing to transom assembly?

 

[Don S]

Re: adding e/m raw water pump,questions.

http://www.boatfix.com/merc/Install/gas/86017211.pdf

Go to the above link and start on page 63, I think it will answer your questions.

 

[kellydee]

Re: adding e/m raw water pump,questions.

Thanks Don. Jerry

 

[kellydee]

Re: adding e/m raw water pump,questions.

Should I use a thru-hull with a built-in strainer that goes on the under side or a straight open-hole thru-hull with an inboard strainer or both?I notice most some of the high quality seacocks seal against the inside of the hull.mine is not a good sealing surface (rough,not flat).Are there usually gaskets for this ,or do I sand flat and use 4200?have'nt been to the store to look,just looked online.Are there usually gaskets on the underside of the thru-hull(outside of boat)? Jerry

 

[Don S]

Re: adding e/m raw water pump,questions.

Look at page 16 of that manual I linked you to earlier.

 

[kellydee]

Re: adding e/m raw water pump,questions.

Look at page 16 of that manual I linked you to earlier.

OK Don,I checked that out but,what about a seacock,shouldn't I have one in there in case of...?Also wanted to make sure those thru-hulls with the slots in the pics were satisfactory for closed cooling or if I need extra filtration for that?