Will this pump work for a water pump

[ejp]

I got this pump from a parts snowmobile. Will it work for a water pump???

[Micho523]

That depends... if it runs off a pulse from then engine, then yes.

[Doubledog]

One way to test....

Attach lines. Drop one in water, put the other (clean) line in your mouth and blow like making a fishy face (pulsing type of motion). You should see the water start flowing. If not, reverse the lines and try again. Thats how I had to do it in the past.

When I tapped my zen through the exhaust port, it pushed air v/s the intake carb is suction. The lines needed reversing and it took me a while to figure it out. A thought.

[zigzagracer]

Never run a line from exhaust on a gasoline engine to the pump or the tank. I don't care who it worked for or how long it worked. Its a bad idea. pick up plse from crankcase or intake only.

[yellow-hydro]

I belive this pump was used for pumping fuel ,
meaning it does not have the bypass valve.
as you may know, waterpumps used in RC boats(at least the ones I've seen) only pump water when the boat is idleing , once the boat gets up to speed and more water is getting forced into the lines from your water pickup tube,this added pressure will take over and bypass your pulse fed water pump. Just like as its not even there.
when you slow down the boat, there is no water getting forced up the waterpickup tube , now the pulse fed water pump will pump the water for ya.

it is not the case with the pump in your picture.
would it work? don't know..... one way to find out

[yellow-hydro]

the problem occurs when this diaphragm pump fails, clogs, stop pumping, raptures, your engine will get no water.

[ejp]

That can happen with any pump. What makes this one different??? It will bypass with no problem. I drill my spacer tonight and tried it out. It works awsome. I will try it on the water when I get my water line, pickup, and oulet. Thanks for the help guys.

[Doubledog]

Never run a line from exhaust on a gasoline engine to the pump or the tank. I don't care who it worked for or how long it worked. Its a bad idea. pick up plse from crankcase or intake only.

Agreed for sure.

The reason why I changed from the exhaust port to the intake was because the pump kept getting clogged up with oil/water goo. Especially after it sits for a few months without running. Some people swear by it though. Nipples, a tap & drill bit is all it takes to do the spacer & you don't have to tear the engine down to do it.

[zigzagracer]

Way back in the old days of preparing trimmer engines for boats, a trick to drill a pulse hole in the crankcase without pulling it apart was to seal off the intake and exhaust , (couple blocks of wood and a c-clamp) put an adapter in plug hole , hook an air hose to it and pump it with compressed air while drilling and tapping the hole. Chips don't get inside , they get blown out while performing the above operations.

[Burkey1000]

Have to agree not to tap the pipe, use the intake spacer, it safer, cleaner, and if you do mess it up it only 10 bucks, screw the cylinder up, 70 bucks, screw the pipe up, 100/150 bucks, not hard to do the math, and its clean and works a treat. better still dump the clutch and let the motor rev like it should lol, yeah you guessed it, im not a clutch type of guy lol. :)

[KV38guy]

I'm using the exact same pump for cooling (water) on my KV and it works perfect. I have a line tapped into the inake manifold? that runs to the top port on the pump. Kelly