SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: BowtieGuy454 on September 14, 2012, 12:22:31 PM
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So I am new to jet boats and I am trying to better understand my boat. Can anyone explain the path of water in my cooling system? Bbc with glenwood logs and nicson snails.
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use the little search feature. theres plenty of info on this topic. O0
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Usually, from the jet to a tee, to the logs, out of the logs to the front of the engine (water pump plates) and out the t-stat housing on the manifold to the snails, and out the exhaust
Daniel
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Ok my motor never heats up. Barley even registers on the temp gauge. Every time I go out I close the gate valve a little more. My piping is correct up to going back to the snails. The snails are just plugged. Should I keep closing down the gate till I hit 140-160 or just leave it alone... If it ain't broke don't fix it.
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Usually, from the jet to a tee, to the logs, out of the logs to the front of the engine (water pump plates) and out the t-stat housing on the manifold to the snails, and out the exhaust
Daniel
Thanks Daniel
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Ok my motor never heats up. Barley even registers on the temp gauge. Every time I go out I close the gate valve a little more. My piping is correct up to going back to the snails. The snails are just plugged. Should I keep closing down the gate till I hit 140-160 or just leave it alone... If it ain't broke don't fix it.
does your gauge or sender work and properly grounded (some people use sealant on the thread and it doesnt make contact to work properly)? take the wire off the sender and ground it, the gauge should do a full sweep.
usually if you preheat thru the logs you should be at least in the 100's by the time it goes thru the block and out the thermostat housing after you've been running a while. are you sure the snails are plugged? water coming out of the exhaust? take the hose off of the snail and hook a regular hose up to the snail and see if you have water coming out of the back of the boat.
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Mine runs ~140* at cruise
Daniel
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If you were plugged you would over heat.
Open the gate and run cold. Mess up with the gate and the damage will be heat related. Hot pockets are possible when closing down the gate.
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Ran this weekend with the gate all the way open and it even warmed up a bit. Thanks for all the info. The snails are not plugged just didn't see they had 2 bungs and the fittings made it look like the lines were coming from the logs.