how to hook up water to a jet boat

Once again, Oldsmobiles are especially vulnerable to this problem. Bypass thermostat and header feed. On these systems the water comes from the jet to the front of the motor, splits at the tee and enters the block where the water … No problem. If not, you’ll need a set of motor muffs. I also like to use 3/4"ID hose or -12 hose from the jet drive to the water tee at the front of the engine, especially if you run an oil cooler. Now we have two inlets and two dumps on the system. After you run it for a while it should begin to come out. Take that gate valve that you put aside from the original dump line and install it between the 90 degree fitting and the header tee. I installed a tee so I could hook up a water hose. If you wish to start the motor out of the water you must run water thru the block. Photo credit: Jobe Thrill.Avoid the wipeouts to discover the fun. It will overheat and destroy the engine. water hose hook up « on: June 01, 2011, 06:05:18 PM » I would like to run my boat so I can trouble shoot some probelms but I want to make sure Iam not going to cause any more problems to my boat, in the picture below is that the correct spot to hook up the hose and if …

wikiHow's Flushing a boat motor by running it out of water is a routine To run your boat motor out of water, start by attaching a hose to your motor’s water intake so you can flush in water, which will avoid damaging the engine.

Problems usually start when there is too much water reaching the headers. There is a better way to go on the Ford engine application, as I will explain later.Once the engine temperature issue has been addressed, the next step is to deal with the possibility of high coolant pressures in the block.

Once the hose is attached, turn on the water faucet. Give it some time.

Use 5/8"ID hose. In most cases I see, the issue of high water pressure in the engine block really becomes a problem when the jet boat is set up with water injected headers. The problem arises with the factory design to get the water back out of the engine.In most factory set ups, one water line exits the thermostat housing and feeds the header tee valve. I noticed it coming out of the drain hole at the bottom of the pump bowl when I pulled it out of the water. Mondello likes to see 12-14psi in the cooling system of the Olds engine.

The motor's impeller pump circulates the fresh water through the cooling system and out the water exhaust port along with harmful salt and silt. Coolant is leaking out of the fresh water intake. [2] X Research source Most manufacturers’ recommendations for flushing or running a motor out of water are similar. If you really can’t stand to see another ad again, then please We use cookies to make wikiHow great. This set up works pretty well except for the fact that the cold water runs through the engine so quickly that the engine temperature usually runs too cold.

You add a new dump line (5/8"ID) hose and put it on the fitting on the thermostat housing that fed the headers.

On the water lines that go to the headers there are 2 hose hook ups on the front of them. The gate valve is supposed to help adjust water pressure to the headers.

Excessive water pressure is usually not an issue with these stock set ups.

Over the years there has been a lot of heated debate on how to deal with this issue of high coolant pressure, but to me, the solution is really very simple. Just bolt one of these kits on, and your cooling issues are solved. With very large cams the water should shut down to the headers at 2000RPM. Where is the water going? I spliced into the hose that runs from the jet to the engine.

When running it water it takes its cooling supply of water thru a small hole in the jet … The improper adjustment may also cause extreme swings in engine water temperature from idle (very hot) to wide open throttle (very cold), which is not a good thing. On the original dump line that had the gate valve, get rid of the valve and put it aside. I have a love for water and a love for sport, Tubing, wakeboarding and others of sort. Yo Guys.

Header water should shut off completely below 1500RPM if the header control tee is working properly. The solution to this system is to use a bypass thermostat kit on the engine to regulate engine temperature.

You may disagree but I feel that all jet boat engines are performance engines.To deal with this cold water temperature issue, the factory folks installed a gate valve close to where the water exits the jet (for cooling).

Yet one true love still holds my heart, Kneeboarding is how I got my first start. boats.com is part of the Boats Group Network.What Type is Right for You? Flushing a boat motor can be accomplished hooking a garden hose to a flushing device which directs fresh water into the motor's cooling system intake. PERFORMANCE JET can set you up with everything that you need, or you do it yourself, but remember, don't skimp. That's what I use for my boat, but I only hook mine up when I want to run it on the trailer! The average jet drive can build pressures in excess of 150psi and the engine cooling system is designed for no more than a maximum of 22-25psi.

Note manifold pressure relief valve. PERFORMANCE JET sells our own pressure relief kit for $149. By using our site, you agree to our I have the water on and it does not come out where it is supposed to. Take one of these plugs out and install a 90 degree hose fitting and connect your header line to this fitting.

You must dump at least as much water out of the engine as you put into it. Water hose hook up. "I bought a 1973 30 ft pontoon with inboard 350 Mercruiser.

Then, pull the gear shift to neutral and start the engine. This kit is sold in this site's  In my opinion, these are the basic solutions for most engine cooling problems for the average jet boat. The other water line on the thermostat housing routs to the transom of the boat, through a gate valve, then dumps overboard through a transom dump fitting.

Remember your jet boat is supposed to be a pleasure boat.