SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: TBAG111 on March 26, 2015, 01:45:04 PM
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Any suggestions please....
Just had my motor completely rebuilt due to water being in the oil. Now that it is all back together and going through the break in process I am still gett way too much water coming out of my headers. I have a BBC 468 with water injected Bassett headers. I bought and swapped out the Bassett T-valve and seems to not be doing the trick... is there something I am missing? My next move is to put in a shut off valve before the T-valve so I dont have to replace my motor again due to way too much water.
Thanks in advance
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You should not have any water under 1500 rpm. Where is you water inlet set? When I ran water I had a t valve and a manual valve.
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Do you have a pressure regulator at the pump to control water pressure going to the motor?
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Maybe snap a few pics of your setup so we can get a better idea of what you're working with.
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TBAG; If you are plumbed like the Bassett diagram asks for then you probably have a restriction in your dump line. You should have a least a 1/2" inside diameter on all fittings, gate valve and thru hull. Not all fittings are equal, many times I have had to swap fittings and thru hulls or drill them out. You can never have enough capacity on the dump line, your gate valve should be able to adjust right amount of water to hdrs. Hope this helps.
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I need to know a few things.
Is there a balance valve?
What size is the dump line fitting?
Are you running a thermostat?
At what point do your headers start to mist?
What camshaft are you running?
Do your header primary tubes have weep holes?
What headers?
What temperatures do you see while you're running.
GT
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I run two gate valves one coming out of the pump and one before the Basset T. plus a bypass valve. Never had a problem
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Uh oh... I feel a gate valve debate coming on... Lol
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Uh oh... I feel a gate valve debate coming on... Lol
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Almost as bad as Ford vs Chevy. ;D
TBAG- are you getting any more water in the oil? Or is it just too much at the headers?
Just to make sure, does the new T-valve have the ball and spring? Did you buy it new or used?
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http://www.jetboatperformance.net/Jet-Boat-Inlet-Pressure-Bypass-kit-jbpprbp.htm (http://www.jetboatperformance.net/Jet-Boat-Inlet-Pressure-Bypass-kit-jbpprbp.htm) This might make your life easy.
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Sounds like tbag needs to answer gts questions so we can figure this out...
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We had nothing but problems with the Bassett tee. So we went too 12v electric gate valve with a control valve and a pressure switch hook the the pedal that you can control whatever rpm u want them to open. They make kits but u can buy better parts for cheaper if u buy the pieces separately. Ps don't buy the plastic gate valve they break! Spend the couple extra bucks to get the brass
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We had nothing but problems with the Bassett tee. So we went too 12v electric gate valve with a control valve and a pressure switch hook the the pedal that you can control whatever rpm u want them to open. They make kits but u can buy better parts for cheaper if u buy the pieces separately. Ps don't buy the plastic gate valve they break! Spend the couple extra bucks to get the brass
That would be a solenoid valve (not a gate).
GT
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Pedal
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Your are correct gt it is. I Did not realize that I didn't say that.
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Almost as bad as Ford vs Chevy. ;D
TBAG- are you getting any more water in the oil? Or is it just too much at the headers?
Just to make sure, does the new T-valve have the ball and spring? Did you buy it new or used?
Brand new t valve and just too much water at the headers. New to boats still and wil check my lines tonight. Don't think there is a gate valve in my system at all. Will post pics tonight
'96 Carrera Eclipse "Boobie Bouncer"
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I think you know where I stand on this.
I hope you find a solution quickly.
Good question here was is there water in oil or too much from headers?
If its in your oil or high block pressure theres a few ways
A gate valve is cheap just make sure your outlet is huge GT can explain how to set it
I have chosen to restrict the pressure (but not water flow thats two variables) before it enters my block by using a Regulator set @12 psi. The excess pressure and some water goes out of a dump line the 12psi pressure and water flow through the block.
Its an option it worked for me just a suggestion hope you get it solved
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Brand new t valve and just too much water at the headers. New to boats still and wil check my lines tonight. Don't think there is a gate valve in my system at all. Will post pics tonight
'96 Carrera Eclipse "Boobie Bouncer"
Have you ran the boat in water or just on the trailer with the hose? If on the water, how was the motor temp?
Either way, was there water coming out of the dump line? like canuck said, maybe a dump line restriction(valve closed, debris in line, line too small) ?
If everything is good, you may just need a bypass system or a control valve to the headers like what's been mentioned.
Every boat runs different even though they're basically the same. ::)
If you answer GT's questions, he'll probably be able to tell you what, where the problem is, how to fix it, where to get the best price on the parts… etc. He's like a mechanical encyclopedia. ;D
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Just bought a 18' Hallett 460 with a Berkeley pump and there is no valve from the pump to engine inlet. Is the valve at the pump a must? Not trying to thread jack...I think it's relative to the thread. Thnx
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Do you have over transom headers? I didnt look at your pic yet?
I thing alot of logs dont have em.
You sure theres no valve at all? Check water line off the pump u want one so you can use it as a shutoff valve if anything
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Just bought a 18' Hallett 460 with a Berkeley pump and there is no valve from the pump to engine inlet. Is the valve at the pump a must? Not trying to thread jack...I think it's relative to the thread. Thnx
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gate valve between pump and motor gives you the ability to shut the water off should that hose burst. otherwise....water pours into boat with little option to control it. so, while not "required", its a BIG safety feature. you should be able to make it to shore with no water going to engine(even if it overheats)....but not if your boat sinks....
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Over transom headers...just curios about my set up. I understand the safety feature. I saw the valve on the Berkeley videos so I figured it was useful. Just wanted to see what the general impression is. Thnx.
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Some people use that valve to regulate engine cooling.
And should anything happen....can be used to shut off water from pump. Others have setups where gate is wide open and cooling is regulated by other configurations. I'd say safety first....and just so happens can be used to regulate cooling (some may not prefer that method of cooling...fyi )
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I went to power wash down pump to cool down motor and manifolds. 4.0 west marine pump. Works great, no ore too much pressure, no more reversion with over transom pipes.
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I went to power wash down pump to cool down motor and manifolds. 4.0 west marine pump. Works great, no ore too much pressure, no more reversion with over transom pipes.
huh?
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is the Bassett t valve new or used
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If you cant back down your exhaust cooling enough to get your mist at 1500 imagine how much water pressure is inside your block.
You can put a pressure gauge on the manifold or whatever you wanna do to reduce the pressure but anything you buy will be cheaper than motor work