Raw water pump/5.7 Merc with serpentine belt

[Thornton69]

Upgraded my engine and need some help with mounting the raw water pump. Original engine had v-belts and the newer one has a serpentine. Came across a link once before but cannot for the life of me find it again on the parts required to mount it. If memory serves me well, it should be mounted on the lower starboard side. It is a '97 Vortec with mechanical fuel pump. I will need a 4 bolt pulley, mounting bracket, belt and additional idler if required. My pump was redone last season and I have an additional rebuild kit for it so not sure if I would be better off getting it mounted or just switching over to one driven directly to the end of the crank. Also, there has never been any kind of strainer on this system and am contemplating adding one. Any help and recommendations would be appreciated.

 

[Bob & Sue]

Here's a thread I started a couple years ago fighting a belt squeal with the brackets you'll need maybe it will help. There are 3 different configurations depending on what idlers and pumps are used for routing the belt my belt is 106".

http://clubsearay.com/showthread.ph...queal-mercruiser-5-7l-350-solved-after-months

 

[Thornton69]

Thanks for your reply Bob. I did a search using your part numbers hoping to get an idea of what position the pump would be sitting in but was unable to come up with anything. Would you happen to have a pic of where yours sits or possibly a link to one? My old engine had a dedicated v-belt driving it. The bracket on the pump appears that it may work but am worried it is too low and will not leave enough belt contact to crank with the serpentine set up. Thanks again.

 

[Bt Doctur]

MCM Alpha Models

Part Number

(Belt Route Diagram) Description

V6 and V8 305/350 cid with plastic P/S pulley. 57-861758A 1 (A)-Replacement Belt/Pulley Kit. Contains 5-3/4 in. (146 mm) pulley and longer belt.
V6 with plastic P/S pulley and Closed Cooling. 57-861759A 1 (Note 1) (B)-Replacement Belt/Pulley Kit. Contains 5-3/4 in. (146 mm) pulley and longer belt.
V8 305/350 cid with plastic P/S pulley and Closed Cooling. 57-861049A 2 (Note 1) (C)-Replacement Belt/Pulley Kit. Contains 5-3/4 in. (146 mm) pulley and longer belt.
V6 with metal 5-3/4 in. (146 mm) P/S pulley. 807901A 6 (Note 1) (B)-Order this Belt Kit if a Closed Cooling Kit is going to be installed on the engine.
V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley. 807901A 5 (Note 1) (C)-Order this Belt Kit if a Closed Cooling Kit is going to be installed on the engine.
V6 and V8 305/350 cid with metal 5-3/4 in. (146 mm) P/S pulley. 807901A 4 (D)-Order this Belt Kit if P/S pump and hoses are going to be removed on second engine in dual engine boat.

 

[Thornton69]

Thanks Bt... Amazing what a difference the correct key words in a search makes. That was a big help.