What rpm do sea water pumps need to be spun?
#1
Registered
Thread Starter
Join Date: May 2016
Posts: 209
Likes: 0
Received 0 Likes
on
0 Posts
What rpm do sea water pumps need to be spun?
MERCRUISER SEA WATER PUMP 46-807151A9 BILLET ALUMINUM HSG AND SERPENTINE PULLEY | eBay
That style Merc pump? Thinking of driving with 4 rib AC pulley, I can math the pulley sizes and engine rpm to figure out what it would be spinning but dont know what "normal" is
That style Merc pump? Thinking of driving with 4 rib AC pulley, I can math the pulley sizes and engine rpm to figure out what it would be spinning but dont know what "normal" is
#4
Registered
Seems that all raw pumps take about the same size pulley, which is smaller than the crank pulley that drives them. Which means they are spun a lil faster than crank rpm. Then there is the direct drive type which, obviously runs at crank rpm. Some alpha vert shafts run a little slower than crankshaft rpm and they are the smallest pumps with least vanes that feed v8 engines. So a pulley the size of the crank pulley would be the upper limit in diameter. I wouldn't go much smaller than what the oem people use. Might spin it too fast.
#5
Registered
Thread Starter
Join Date: May 2016
Posts: 209
Likes: 0
Received 0 Likes
on
0 Posts
****. Looked like a simple deal not hard to screw up. Should I take it apart when I get them and use real bearings? I liked the bolt on pulley (I could have another diameter made if I needed to change ratios) and the 5 thru bolts for the housing gave me an easy place to mount the face to a bracket to bolt to engine block. Ordered the two when I was typing the original post :/ Anything else equivalent?
#7
Registered
Thread Starter
Join Date: May 2016
Posts: 209
Likes: 0
Received 0 Likes
on
0 Posts
#8
Registered
Thread Starter
Join Date: May 2016
Posts: 209
Likes: 0
Received 0 Likes
on
0 Posts
Or are you meaning this? MerCruiser Sea Water Pump/Pulley Serpentine Belt, Replaces 46-807151A9 - EMP | eBay
#9
Registered
iTrader: (1)
Or are you meaning this? MerCruiser Sea Water Pump/Pulley Serpentine Belt, Replaces 46-807151A9 - EMP eBay
Genuine Mercury & Mercruiser parts. Sea Water Pump