You add a new dump line (5/8"ID) hose and put it on the fitting on the thermostat housing that fed the headers. In these systems water is pumped from the jet drive through a gate valve to a tee fitting under the front of the engine. Use 5/8"ID hose. In the first system example I just discussed, there are two water inlets and two water outlets. On again, off again, I kept on falling; Would I ever catch on, my motivation was stalling. Your motor will have to warm up before the thermostat opens up to allow water to cool your engine. Opening the dump valve reduces the flow of water to the headers by dumping more water overboard.
On the original dump line that had the gate valve, get rid of the valve and put it aside. If you don’t see a stream, turn off the engine immediately and fix the water pump before restarting it. First, you take the water line that feeds the headers off of the thermostat housing and put it aside for a minute. Check the manual to find out where your intakes are located and whether they have built-in attachments for a garden hose.
When I was talking about the pump I was referring to the jet pump where the impeller is located. Give it some time. And 1 water line hook up on the rear.Each header has 3 water lines to it. Problems usually start when there is too much water reaching the headers. This set up does not work well in reality. 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. Excessive water pressure is usually not an issue with these stock set ups. 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 pump would normally be. I have a 21 foot Hawaiian jet boat. Hooking up a hose to your Sea-Doo watercraft vehicle is an important step in flushing out the engine. Any time you take your Sea-Doo out into salt water, you'll want to flush the engine out afterwards with fresh water to prevent the salt water from collecting and damaging the engine.
You add a new dump line (5/8"ID) hose and put it on the fitting on the thermostat housing that fed the headers. In these systems water is pumped from the jet drive through a gate valve to a tee fitting under the front of the engine. Use 5/8"ID hose. In the first system example I just discussed, there are two water inlets and two water outlets. On again, off again, I kept on falling; Would I ever catch on, my motivation was stalling. Your motor will have to warm up before the thermostat opens up to allow water to cool your engine. Opening the dump valve reduces the flow of water to the headers by dumping more water overboard.
On the original dump line that had the gate valve, get rid of the valve and put it aside. If you don’t see a stream, turn off the engine immediately and fix the water pump before restarting it. First, you take the water line that feeds the headers off of the thermostat housing and put it aside for a minute. Check the manual to find out where your intakes are located and whether they have built-in attachments for a garden hose.
When I was talking about the pump I was referring to the jet pump where the impeller is located. Give it some time. And 1 water line hook up on the rear.Each header has 3 water lines to it. Problems usually start when there is too much water reaching the headers. This set up does not work well in reality. 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. Excessive water pressure is usually not an issue with these stock set ups. 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 pump would normally be. I have a 21 foot Hawaiian jet boat. Hooking up a hose to your Sea-Doo watercraft vehicle is an important step in flushing out the engine. Any time you take your Sea-Doo out into salt water, you'll want to flush the engine out afterwards with fresh water to prevent the salt water from collecting and damaging the engine.
You add a new dump line (5/8"ID) hose and put it on the fitting on the thermostat housing that fed the headers. In these systems water is pumped from the jet drive through a gate valve to a tee fitting under the front of the engine. Use 5/8"ID hose. In the first system example I just discussed, there are two water inlets and two water outlets. On again, off again, I kept on falling; Would I ever catch on, my motivation was stalling. Your motor will have to warm up before the thermostat opens up to allow water to cool your engine. Opening the dump valve reduces the flow of water to the headers by dumping more water overboard.
On the original dump line that had the gate valve, get rid of the valve and put it aside. If you don’t see a stream, turn off the engine immediately and fix the water pump before restarting it. First, you take the water line that feeds the headers off of the thermostat housing and put it aside for a minute. Check the manual to find out where your intakes are located and whether they have built-in attachments for a garden hose.
When I was talking about the pump I was referring to the jet pump where the impeller is located. Give it some time. And 1 water line hook up on the rear.Each header has 3 water lines to it. Problems usually start when there is too much water reaching the headers. This set up does not work well in reality. 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. Excessive water pressure is usually not an issue with these stock set ups. 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 pump would normally be. I have a 21 foot Hawaiian jet boat. Hooking up a hose to your Sea-Doo watercraft vehicle is an important step in flushing out the engine. Any time you take your Sea-Doo out into salt water, you'll want to flush the engine out afterwards with fresh water to prevent the salt water from collecting and damaging the engine.
You add a new dump line (5/8"ID) hose and put it on the fitting on the thermostat housing that fed the headers. In these systems water is pumped from the jet drive through a gate valve to a tee fitting under the front of the engine. Use 5/8"ID hose. In the first system example I just discussed, there are two water inlets and two water outlets. On again, off again, I kept on falling; Would I ever catch on, my motivation was stalling. Your motor will have to warm up before the thermostat opens up to allow water to cool your engine. Opening the dump valve reduces the flow of water to the headers by dumping more water overboard.
On the original dump line that had the gate valve, get rid of the valve and put it aside. If you don’t see a stream, turn off the engine immediately and fix the water pump before restarting it. First, you take the water line that feeds the headers off of the thermostat housing and put it aside for a minute. Check the manual to find out where your intakes are located and whether they have built-in attachments for a garden hose.
When I was talking about the pump I was referring to the jet pump where the impeller is located. Give it some time. And 1 water line hook up on the rear.Each header has 3 water lines to it. Problems usually start when there is too much water reaching the headers. This set up does not work well in reality. 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. Excessive water pressure is usually not an issue with these stock set ups. 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 pump would normally be. I have a 21 foot Hawaiian jet boat. Hooking up a hose to your Sea-Doo watercraft vehicle is an important step in flushing out the engine. Any time you take your Sea-Doo out into salt water, you'll want to flush the engine out afterwards with fresh water to prevent the salt water from collecting and damaging the engine.
The problem is that this set up puts far too much water to the header tee valve and excessive water in the headers puts water in the oil. If you are using the electronic water control valve, you will need a cold water source for the headers. To control excessive header water the jet boater will install a header water control valve somewhere in front of the header tee.
Open the valve that will allow water to flow from the water hose. If you wish to start the motor out of the water you must run water thru the block. If this is your situation, then install a pressure relief valve system on your jet drive water feed in addition to what I have just discussed in the set up above. If you still have too much pressure then install a pressure relief system that reduces the pressure before water enters the engine. "I bought a 1973 30 ft pontoon with inboard 350 Mercruiser. So far so good. If you are running a blue printed jet drive in the higher RPM ranges at higher speeds, with a lot of power, then you are likely to have excessive pressure in the block. The great thing about jet boats is that the engine RPM's should remain the same throughout the life of the boat, regardless of age, loading, water conditions, towing, whatever. Water hose hook up. You must dump at least as much water out of the engine as you put into it. Once your engine is on, run the boat for 5-10 minutes to flush it out, then turn off the engine before turning off the water. 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. (and you still maintain full volume.) Once in the exhaust logs, water is preheated and routed to the front of the block where the water pump would normally be located. PERFORMANCE JET Sells the Banderlog header control valve for this application.Add a bypass thermostat to this set up and you have solved the problem of engine temperature, coolant pressure and proper header function. They work great.Now, for you Ford guys, good news.
You add a new dump line (5/8"ID) hose and put it on the fitting on the thermostat housing that fed the headers. In these systems water is pumped from the jet drive through a gate valve to a tee fitting under the front of the engine. Use 5/8"ID hose. In the first system example I just discussed, there are two water inlets and two water outlets. On again, off again, I kept on falling; Would I ever catch on, my motivation was stalling. Your motor will have to warm up before the thermostat opens up to allow water to cool your engine. Opening the dump valve reduces the flow of water to the headers by dumping more water overboard.
On the original dump line that had the gate valve, get rid of the valve and put it aside. If you don’t see a stream, turn off the engine immediately and fix the water pump before restarting it. First, you take the water line that feeds the headers off of the thermostat housing and put it aside for a minute. Check the manual to find out where your intakes are located and whether they have built-in attachments for a garden hose.
When I was talking about the pump I was referring to the jet pump where the impeller is located. Give it some time. And 1 water line hook up on the rear.Each header has 3 water lines to it. Problems usually start when there is too much water reaching the headers. This set up does not work well in reality. 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. Excessive water pressure is usually not an issue with these stock set ups. 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 pump would normally be. I have a 21 foot Hawaiian jet boat. Hooking up a hose to your Sea-Doo watercraft vehicle is an important step in flushing out the engine. Any time you take your Sea-Doo out into salt water, you'll want to flush the engine out afterwards with fresh water to prevent the salt water from collecting and damaging the engine.
