Cooling system exit port

[Mash13]

How much flow do you guys/girls get through your cooling system? mine seems a bit dribbley, and I have checked for blockages and its clear.

anyone get a torrent or just a dribble

[Steven Vaccaro]

You should be more than a dribble. Did you check for blockages inside the water jacket?

[engineerjoe]

the first thing I did when I got my SV was open up all the cooling fittings by drilling them out and modifying the waterjacket to get more surface area on the motor. i get a nice steady stream ~12-18" out the side of the hull.

[ice329]

A good three to 6 inch stream in the right hand turns and a little less on the straights. With the stock pickup. There are lots of threads if you can find them. Check the tubing for to tight of turns which cause sort of a kink and check the exit port again and see if there is anything in there. Check there is a seal on the bottom of the rudder, make sure the pick up hole is open. Check the fittings on the esc plates, sometimes there is a glue in them blocking flow, last recheck the water jacket make sure its open on both sides. G/L

[Fruity]

Mash,
Water pick up's in the rudders is something I never seem to be able to get a good flow out of, and I always modify them, see the pics, my SV and a Gas Cat, both modified and both always stay cool with a nice stream out the side of the boat.

I drill the plug out of the bottom of the rudder and epoxy a piece of tube in the bottom, be careful on the size you drill as the SV rudder is quite thin, then get the tube from the LHS and cut a small piece with an angle to create a positive pressure area and feed your system.

On the SV I have left the old hole open, on the Gas Cat it is epoxied over, this area is under pressure from the oncmoing water so I don't think you loose much pressure from this hole anyway.

Cheers...Tim.

[Mash13]

cheers guys, I noticed today that it had started to flow a lot better as I had blasted it with compressed air.

[scooterP]

I did the same thing that Fruity did except I didn't leave as much of the tube exposed. Only a couple of mm's. This has been the best thing so far to increase the flow of the water. I wasn't looking for a 2 foot stream, just a steady flow. It seemed to help things quite a bit. I think the only other thing that I would change would be to split the cooling to dedicated motor and dedicated esc cooling.

[MLJones8]

Mash,
Water pick up's in the rudders is something I never seem to be able to get a good flow out of, and I always modify them, see the pics, my SV and a Gas Cat, both modified and both always stay cool with a nice stream out the side of the boat.

I drill the plug out of the bottom of the rudder and epoxy a piece of tube in the bottom, be careful on the size you drill as the SV rudder is quite thin, then get the tube from the LHS and cut a small piece with an angle to create a positive pressure area and feed your system.

On the SV I have left the old hole open, on the Gas Cat it is epoxied over, this area is under pressure from the oncmoing water so I don't think you loose much pressure from this hole anyway.

Cheers...Tim.

Tim,

I like this idea the best out of all the modified water pick up's. My SV has only been ran a hand full of times and I feel I need a better water pick up.

Is the plug very thick? I'm debating on if I need to visit a buddies house to use his table press, or if I feel confident drilling a perfectly vertical hole through the bottom of the rudder.

Lastly, since your post was a little over the year ago, do you have any regrets?