Page 68 Jet Boat. I have a 454 BBC using a 1981 Berkeley jet pump drive. This system does not provide the same degree of protection for your engine as a FULL (Block and Manifold) closed cooling system, but is generally easier to install, less expensive, and may be the only option available if your engine's pump capacity, electronic control system, or other factors prevent a FULL system from being safely installed on a particular engine or boat. I have the regular jetboat plumbing. Welcome to Jetboaters.net! Deck Height: 9.8" 650 hp; Fits: 454 CID through 540 CID engines. Marine Plumbing Boaters Marine Supply has a huge selection of affordable Boating Products like Marine Plumbing Equipment & Parts, Marine Plumbing Systems, Boat Pumps, Marine Blowers, Boat Siphoning Equipment, Bilge Pumps, Marine Toilets, Plumbing Parts, Head Parts, Marine Heads, from Flojet, Jabsco, Raritan, Rule. ... S/B Chevy LS1 Jet Boat. Also, if you are local to SuperDave, just bring the boat over there and he will help you out. I have rebuilt this and would like to know the correct water hose plumbing configuration. We have members with boats from all the major manufacturers including Yamaha, Seadoo, Scarab and Chaparral. Please consider Signing Up so that you can enjoy all the features and offers on the forum. bulbbbc/dom jet powerd nordic the water exits therm like what the other guy said, make sure the by pass goes overboard like he said be fore it enters motor,or blown head gaskets will most likley occur,for headers on my bbc /dom jet from the t/stadt outlet one goes o/b plumb the other to a a ball valve,then to a tee. It is designed to release the chemical energy stored in the fuel, converting it into mechanical work that can then be put to a useful purpose. He's got good deals, but be careful that stuff adds up real quick! Jet Boat cooling « on: March 18, 2012, 04:58:37 PM » I am an experienced engine builder, but I just inherited a 1978 Nordic jet boat. Can anyone point me to a diagram of hose routing for a cooling system with logs and snails?Brandon In the old days, many marine engine cooling systems were of the âraw-waterâ variety, meaning simply that they relied on pumping whatever water the boat was floating in through the engine and pumping it out the exhaust systemâsalt water, polluted water, algae-infested water, whatever was available. These headers are designed to be a replacement for Mercury, ... a single o2 sensor bung provision on one of the exhaust risers..The system features both fresh water and closed cooling plumbing options. Discuss maintenance, engines, pumps and related topics. These thermostat kits use water tees with 1/2" NPT threads. Keeps engine temperature between 140 & 160 degrees. On most modern era marine inboard 4 cycle engines the marine specific thermostat housing is a large unit and more like a manifold with ins and outs, and is where the raw water supply is made available to the engine's cooling system. Oil cooler plumbing. Thu Apr 23, 2015 8:07 pm. Locate boat cooling system in stock and ready for shipping right now. Since our boats have an open vs. closed loop cooling system, there is a potential of flooding the engine through the exhaust if there is not a positive exhaust pressure pushing out and preventing water from entering there. Half Kit cools engine only. Having a problem with your boat this is a good place to ask. Connolly Marine in Lake Havasu City carries a wide variety of parts for your cooling system. Take advantage of our experience and knowledge and contact us today for all your needs. Here in our boat plumbing catalog you will find thousands of genuine new and replacement boat parts. Need a little advise. We carry a variety of performance jet boat parts and pumps, marine engine parts, and marine exhaust systems and silencers, including all the accessories like billet aluminum hardware, BBC mounting kits, gauges, SS fittings, and flame arrestors. Includes thermostat housing, 2 Tee fittings, a 160 degree thermostat, valve, seat, & spring. The temperature will cycle up to 30 degrees within this range, due to cold water entering the system once the thermostat opens. In early applications, the Chevy inlet blocks and the Old water pump cover plates were tapped with 3/8" NPT pipe thread. Very cool, but nobody on the East coast knows anything about them. According to the old man I bought it off its .030 over, 9.5:1 compression, 292 cam, stock oil pan. Direct fit to the Berkeley models 12JC and 12JG with 3/8" NPT water inlet, but can be used on other models as well as long as they have a 3/8"NPT water inlet on the inside of the boat. Stainless steel bypass thermostat kits for Chevy and Olds. Going to have to take another look at my pressure relief valve and make sure it's working. Jet boating community on the web. Sea-Doo closed loop vs. open loop cooling comparison is perhaps one of the most interesting basis for discussion in the world of watercrafts. Hard to beat prices on boat cooling system and similar listings. This system in not designed for raw water cooling. Here is an overview of a typical on-board water system. Refer to page 4-1 for the cooling system flushing proce- These post-operation procedures are dure. Re: 460 ford runs cold I checked out the website and found the article on jet boat cooling. However, he may be reverse cooling the block - this is a way to help avoid detonation on high compression motors w/ pump gas - kind of a little ⦠Jet Boat Water Plumbing ; You have to register before you can post: click the register link above to proceed. Apparently my problem is common. We are delighted you have found your way to the best Jet Boaters Forum on the internet! Not recommended for supercharged or turbocharged engines, or sandy conditions. Tanks In addition to the normal problems mine is plumbed wrong because it does not go through the exhaust manifolds for pre heat, and I ⦠Performance Jet wrote:Bae 557, Yours is another variation of a water system set up, it will work but I would question the -6 dump lines out of the engine.Small exit lines will make your engine run hotter and increase engine pressure, even with the relief valve. In fact, pipes are rarely used at all on boats, replaced by easier-to-handle flexible hose or tubing. AT last a cooling system solution for adapting the popular GM LS engine into any Jet Boat or application with an external water pump source. Try to visualize how the system will route and measure accordingly and buy extra hose. When using the bypass thermostat kit for the Chevy and Olds motors, you may need to enlarge the fitting size on the water inlet plates and blocks. I think I have a about 1200 into my plumbing setup. I have had 5 boats and this is my first jet boat. We carry all the boat plumbing parts you need to keep your systems operating at 100%. Boat plumbing is a lot easier for the do-it yourselfer than plumbing at home, mainly because it doesn't involve rigid pipes running inside solid walls. I want to continue to run a water pump as I did with the non supercharged motor but the trouble I am having is with the thermostat hole on the inlet manifold faces forwards rather than upwards like a traditional manifold and there is a lack of room. Or, at the very least youâre keeping up with the times, because starting with the 2014 model year, Scarab is back in a jet boat incarnation. Also running Bassetts OT water injected headers without Ts. The water intake for your engineâs cooling system is located forward of the propeller on the lower unit housing. Housing is 4 inches long x 3-1/8" wide x 3" tall. Designed for use on cold water source cooling systems. We offer rule bilge pumps, Jabsco marine toilet systems, faucets, washdowns and hundreds of miles of boat hoses and hose fittings. But if, on the other hand, Scarab makes you think of hot little jet boats with sizzling graphics and a 1503 Rotax 4-TEC jet-drive, youâre young and hip. Is the water fed from the jet pump.. to each exhaust at 1 of the 2 front water ports? It is basically an argument between Sea-Doo fans on one hand and the owners of WaveRunner and Jet Ski watercrafts on the other side.. Sea-Doo manufactures personal watercraft (PWC) with the closed-loop cooling system while the other two ⦠It will keep engine temperature between 160 and 190 degrees which is the most desirable temperature range obtained. Most items ship the same day This system allows removal of the Automotive engine mounted water circulation pump and provides both water inlet/outlet and temperature control through the integrated thermostat assembly. Look for some cast-in grating or perhaps a screwed-in plastic screen. Whatever you do, plan ahead. System engineered to work with Fluidamper balancer #212-620121. Plumbing, Toilet, Vent Parts For Sale 8 COOLING SSTEMS Cooling System Basics 1.0 Cooling System Basics In its simplest form an internal combustion engine is an energy conversion device. These can become clogged up with marine growth fairly quickly, especially if the lower leg of your engine does not come out of the water completely when youâre not using your boat. The boat was set up for a big-block Chevy, and I have installed a stout small block in it's place. Big Block Chevy Half System Closed Cooling Kit Up To 650HP - Copper / Bras. While there are numerous universal OEM closed cooling kits, this is not one of those. Right now I do not understand the exact nature of your system and plumbing, but I will try to describe the way most inboard engines I have seen work. This thermostat system is designed for use on cold water source cooling systems. jet boat cooling water plumbing You have to register before you can post: click the register link above to proceed. Oil cooler plumbing. PERATION POST-OPERATION 1) After putting the Jet Boat on the trailer, flush cooling system on each CHECKS engine to prevent the cooling sys- tem from clogging up with salt, POST-OPERATION CHECKS sand, or dirt. Jet Drive Water Pressure Relief Kit The kit from Pack-A-Jet will come with a brass pressure relief valve with 1/2" npt bypass outlet and a stainless steel extension tube for easy installation. I have just put a 350 Chevy in my jet boat running a Weiand 671 supercharger and am trying to work out a suitable cooling system. I've spent the past 3 days reading up on how a jet boat is supposed to be plumbed the correct way which brings me to this: I got a 455 Olds in my 73. Plumbing & Fittings Ball Valves Bulkhead Fitting Engine Flushing Kits Hose Hose ... we recently worked with performance jet boat expert Greg Shoemaker to improve the design of our grates. To start viewing messages, select the â¦