www.iFourWinns.com

Its time to bite the bullet. My impeller supply is down to one spare, with none available. Im switching over to a crank mounted raw water pump. (Sherwood P1050) Any tips of suggestion for this project? It seems fairly straight forward, I just don't want to overlook something. Some questions I have are:

1) Best location for scoop/thru hull? Directly underneath pump or towards the transom? I dont want to have any water flow issues.

2) I have been told to just pull the old impeller in the outdrive and let the shaft spin. Any problems with this? I don't believe any actual "cooling" takes place in the drive other than the water it is in.

Thanks

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-Todd

1993 Vista 245
351 CID, OMC King Cobra

I recall there was someone over on iboats.com doing this too but I don't recall what the outcome was. One thing I was thinking of is that most boats have a cooler for the power steering in line with the raw water intake hose. Since with a crank pump you are not pulling water up from the transom through your normal water intake hose, you'd have to find a way to route the cooling water from the impeller through that cooler on the way to the thermo housing. Many OMCs had the P/S cooler on the rear of the engine, but some (Big Block Ford) did not.

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II

Hmmmm, didnt think of that. Thanks for the info. I posted the same question over there and didn't get any responses. I honestly have no clue if mine has the power steering cooler or not, will definitely check on that.

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-Todd

1993 Vista 245
351 CID, OMC King Cobra

No doubt its very interesting and informative page and good information here about water pumps .I am also interested in to collect new ways to repair these water pumps .This is the basic reason of my registration here .This forum was full with a lot of different topics .

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