Hey everyone i am new to the Forum. I am rebuilding my grandpas 1973 Challenger. He was the Origional owner of it. He took the motor out like 10 years ago and now i am finally rebuilding it. I have fully rebuild motor and was wondering how to Plumb the water system. I know there is one inlet off the Jet that would give the boat water. I also have a dump that goes out the back of the boat. I am running Bassets. Does anyone have a Diagram on how to hook this up. The way he had it i do not think is correct by looking at pictures. If anyone could help me out i would appreciate it THANK YOU!!!

Thanks... I'm stoked for this thing to be done.. It has cost me way more then I though it would... Guess I should of know that..

Ohh Please dont tell me that.. I am pretty sure its fine tho. Ill for sure check into it.

Oh no here we go again.
start here:
http://www.jetboatperformance.biz/pages/FAQ.html

and do a search here tons of info.

I actually found that before i posted this. My grandpa had it set up completly diffrent thats what made me question things. He had it where both the bassets hooked came out of the Thermostat. One inlets on the block was hooked up to water off the JET and the other side of the block was a DUMP out the back. So i was just confused on why he had it like this. Could very well be he had it incorrect but i do remember the boat running.

I have a Thermostat 160* with a by-pass in the Thermostat housing to solve the Eng temp issue and no gate valves to solve water pressure issue the Reason = ( Gate valves may cause excess PRESSURE into block Or over transom headers if "Leaned out" to achieve proper TEMP in block, your restricting the flow on the exit to keep the water slow enough to keep at a warm temp.)

On over the transom headers one line goes from your Themostat housing and feeds your Header PRESSURE TEE which some have a gate valve to control inlet water PRESSURE because you want a fine mist off the Headers.   

One line goes to a gate valve and then overboard If you Lean out the gate valve your putting more water PRESSURE to the Header TEE because it cant dump overboard and it may end up with water in your oil and vise versa if its open too far too much water dumps overboard & you blue your Headers

I have a 12 psi Regulator with built in Relief valve off of the pump Jet drive "Water Feed" to not allow excess water PRESSURE into my block (the water dumps overboard if relief lifts I had to install a new outlet)

The water that feeds my wet stacks is supplied now from the Thermostat housing ( You could use from port on the intake manifold water crossover) that runs to the hose that goes to the gate valve on the Header TEE to control flow to the wet stacks without interupting water flow exiting the engine.  This gate valve is not disrupting "PRESSURE".  Adjust this gate till you get a fine mist from your Headers they don't need a bunch of water

The new route of the water exiting my engine is now from each fitting off of the Thermostat housing.  One fitting exits the block and dumps overboad the other feeds the wet stacks.