To start, i have a highwing.

I want to make a custom water-cooled system to keep the engines cooler. My question is as followed:
1. Does it matter where i drill the hole on the bottom of the boat?
2. How high in the back(transon) area should i have the outlet going?
3. What size tubing should i use, i would like it for cooling, and for water shooting pretty far back..

Any other tips or suggestments would be awesome.
Thanks!

i want to do aht same thing

Anyone?
I know someone has to know this stuff!!

Make a bracket to hold a piece of copper tubing on the transom. Make sure the tubing is behind the prop, so the prop wash will push water in to it. Also make certain the tubing is cut on a 45 degree angle. Wrap more copper tubing around the case of the engine. If you wish, you may also make/solder in brush cooling lines. Make an outlet somewhere on the body so that it is above the water level while the boat is not moving. Then use nitro fuel tubing to connect everything together.

Getting the water to shoot back far depends on how fast your boat is.

Ryan

Aquarium tubing is better. It has a larger ID to move more water. and the inside is slicker for less resistance to the water flow.

Check on towerhobbies.com for the water pick up for the traxxas villains, then 5/32 aluminum tubing in 36" lengths, there are instructions on offshorelectrics.com on how to do all of this.

Then fill the tubbing with sand or salt and crimp both ends once it is filled, then wrap the tubing into a coil around something the same size as your motors.

then once you have your coils cut off the crimp on each end and figure out a way to get the salt out i found that rotating it and taping it at the same time worked best. What ever you do dont try to flush it out with water learned that the hard way.

And for a water exit you can do it really cheap by just cutting a hole in the hole that a water line will run throughand just have the line stick out of the hull.

Or you can buy a custom water exit at towerhobbies.

Hope This helps,
-Matt

i dont mean to be rude or take sides or anything but you really should flush out the water cooling system, especally if you run your boat in salt water. its basiclly like an outboard motor if u dont flush it it starts to sease up. the same goes for rc's if it aint flushed it will cause blockage which will slowen the speed of the water travveling through the tubes.

Speed kills, no one is arguing the point of flushing out the cooling system.

another thing the props are about an inch from the transom

Either go with a rudder placed begind the prop that has a built in water pick up. Or just place a water pickup at the transom.

Ryan