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AQ 151A with 280 outdrive

P

popeye_69

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"Hi: I am in the process of p

"Hi: I am in the process of putting the above unit together. I am new to VP so I am in need of some advise. First flapper in exhaust bellowes or not. Pros & con. I have the option of either using raw water pump in outdrive or pump that runs off counter shaft of engine, any preference?"
 
"1) Definitely, use the fl

"1) Definitely, use the flapper. Not doing so can make raw water reach the cylinders and hydrolock and/or seize your engine.

2) What "raw water pump in the outdrive" are you talking about? Unlike Mercruisers, Volvo Penta does not have raw water pumps installed in the outdrives. The only raw water pump in an AQ151 is the small pump with two copper pipes located by the alternator."
 
I've had 100's of AQ s

I've had 100's of AQ series drives apart and never have seen a raw water pump. Where have they been hiding them?
 
Hi; Thanks alot. I guess what

Hi; Thanks alot. I guess what I should have asked is it better to pick up water thru out drive or thru hull. Thanks again
 
"In my opinion, sucking water

"In my opinion, sucking water through-hull can cause more problems than benefits. I have found picking water through the outdrive is very reliable and seldom causes problem except perhaps for the dreaded raw water hose connector becoming corroded or the lower o-ring in the pick-up tube becoming defective or being wrongly installed."
 
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