SX/SXi/SXi Pro sj pump to sx hull

Love the graphics on it! Its also nearly impossible to tell that it was a 300sx. Great job!
thanks, and yep its an old sx 750 hull, just waiting for a new coil to turn up from your side of the pond then its start up time !!! should have more pics up at the weekend of the final engine bay arrangment, its that close i can smell the fumes already !!
 
cooling.JPG

alright kids, quick update, had major problems with the electrical side of things, like CDI and stator blew at the same time !!, new ones found and fitted just need to get the zorst and fuel hoses on and its actually done ! test next weekend at a local lake. fingers crossed all will be ok. by the way, is this the right way to do the cooling lines ????
 
There are a lot of different ways to run cooling the way yours looks to be run i'd be worried but can't see where all of your lines are going. The tech section has a good amount of information on cooling set ups. I usually run parallel cooling on my modified boats over standard but it's all preference. Need more info on how you have your cooling lines from your pump to your manifold and if you are running a parallel system to your pipe as well.
 
By the way awesome work on your sx!! I've been doing the same to my SXI but haven't been able to work on it but maybe a week a year. Your ski makes me want to get mine close enough to me to finish it.
 
Also are you still using the stock thru hull cooling line and or bilge line because the kawasaki stock cooling line tips are to small and need to be drilled out or cut for more flow, they work fine for a stock boat running single cooling but anything else and they are to restrictive
 
hi coldwater, thanks for the comments, get that sx done !! yes im using the stock cooling lines but i cut the ends off, its a single line in to the mani. i will get this posted to the tec section
 

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
Your cooling lines are not right. If it runs good, then okay I guess, but it's not "right".

Your second line from the head goes to the pipe. Then the 2 lines out of the pipe T and go to a restrictor, then to the stinger. This is not right. Your restricting the flow of water through your pipe. You are going to run the pipe a lot hotter than necessary. Also, by restricting the flow out of the pipe, you are pressurizing the water in the head pipe, increasing the amount of water injected into the pipe (negates the flow control, and increases heat, your worse off than not having flow control). Lastly, all of this extra heated water goes to your stinger, putting very hot water into the rest of your exhaust. You have to run the system cooler so you do not over heat your waterbox and other exhaust system components.

Your stinger should be fed from the head. A cool line from the head gives cool water to the stinger. The stinger is past the expansion chamber, the water is injected to cool the exhaust, but doesn't effect the pipe performance much, so you should run your cold water to the stinger.

Change it to run like this...
- On the far left, remove one of the lines from one of the pissers, put the flow control valve on that line, and connect that to the stinger. Now you have unrestricted flow from the head to the 1st pisser, and your stinger still has flow control, but now the stinger gets once heated water (instead of twice by the pipe).
- Remove the line connected to the 'in' side of the flow control valve, and connect that to the second pisser.

With the set up I just suggested...
you have your front fitting on your head A) feeding the stinger via flow control and B) pissing
You will have your back fitting on your head feeding the pipe then pissing unrestricted.

This will reduce the temp of your pipe, remove the "twice heated" water going to the stinger, better dissipating heat, allowing you to run leaner. It will also remove the pressure injecting water into your pipe, perhaps improving performance there as well.
 
same thing I was thinking looking at it, overheating the pipe, I'd really suggest running dual cooling. Cutting the ends off the thru hull line was def the right thing to do but drilling/tapping your pump, mani and running a second thru hull line or using the bilge line for dual cooling is the way to go especially with the dual cooling lines off the head.
 
The 3rd and 4th diagrams in this thread are the best way to set it up http://www.x-h2o.com/threads/1667-B-pipe-cooling-routing-water-lines but if you use the diagram in the 3rd post I would restrict the line going overboard off the head to keep your pipe from overheating basically tune your cooling to get the temps you need. These are all dual cooling set ups as well so you would need a second line from your pump or swap out the single stock for 1/2in line, there is a laundry list of options howewver running the single stock cooling from the pump to a dual off the head I've always had overheating issues I would recommend that if you are running a stock line single from the pump you run a single off the head similar to the stock cooling setup on the 650/750/800 kawasakis.You can also cruise the pwctoday threads they have a lot of good write ups on dual cooling options as well as the 1/2in single route which is really easy I did it on my X-2.

Vumad's way sounds like it will work well to I had to read through it 4 times but I see what he is saying now and his would be the easiest and sounds like it would work perfectly for you with the single stock line from the pump
 

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
View attachment 213169

alright kids, quick update, had major problems with the electrical side of things, like CDI and stator blew at the same time !!, new ones found and fitted just need to get the zorst and fuel hoses on and its actually done ! test next weekend at a local lake. fingers crossed all will be ok. by the way, is this the right way to do the cooling lines ????

Your cooling lines are not right. If it runs good, then okay I guess, but it's not "right".

Your second line from the head goes to the pipe. Then the 2 lines out of the pipe T and go to a restrictor, then to the stinger. This is not right. Your restricting the flow of water through your pipe. You are going to run the pipe a lot hotter than necessary. Also, by restricting the flow out of the pipe, you are pressurizing the water in the head pipe, increasing the amount of water injected into the pipe (negates the flow control, and increases heat, your worse off than not having flow control). Lastly, all of this extra heated water goes to your stinger, putting very hot water into the rest of your exhaust. You have to run the system cooler so you do not over heat your waterbox and other exhaust system components.

Your stinger should be fed from the head. A cool line from the head gives cool water to the stinger. The stinger is past the expansion chamber, the water is injected to cool the exhaust, but doesn't effect the pipe performance much, so you should run your cold water to the stinger.

Change it to run like this...
- On the far left, remove one of the lines from one of the pissers, put the flow control valve on that line, and connect that to the stinger. Now you have unrestricted flow from the head to the 1st pisser, and your stinger still has flow control, but now the stinger gets once heated water (instead of twice by the pipe).
- Remove the line connected to the 'in' side of the flow control valve, and connect that to the second pisser.

With the set up I just suggested...
you have your front fitting on your head A) feeding the stinger via flow control and B) pissing
You will have your back fitting on your head feeding the pipe then pissing unrestricted.

This will reduce the temp of your pipe, remove the "twice heated" water going to the stinger, better dissipating heat, allowing you to run leaner. It will also remove the pressure injecting water into your pipe, perhaps improving performance there as well.

The 3rd and 4th diagrams in this thread are the best way to set it up http://www.x-h2o.com/threads/1667-B-pipe-cooling-routing-water-lines but if you use the diagram in the 3rd post I would restrict the line going overboard off the head to keep your pipe from overheating basically tune your cooling to get the temps you need. These are all dual cooling set ups as well so you would need a second line from your pump or swap out the single stock for 1/2in line, there is a laundry list of options howewver running the single stock cooling from the pump to a dual off the head I've always had overheating issues I would recommend that if you are running a stock line single from the pump you run a single off the head similar to the stock cooling setup on the 650/750/800 kawasakis.You can also cruise the pwctoday threads they have a lot of good write ups on dual cooling options as well as the 1/2in single route which is really easy I did it on my X-2.

Vumad's way sounds like it will work well to I had to read through it 4 times but I see what he is saying now and his would be the easiest and sounds like it would work perfectly for you with the single stock line from the pump

Very hard to explain cooling in text. Picture worth 1000 words, yadda yadda, read the above quotes... see below attached image.

Cooling image for backflip765.png

Very simple fix.

Edit: If you do end up setting up true dual cooling, that is 2 lines from the pump, you run it exactly as the image in this post, you just have 2 lines from the pump going to 2 fittings on the exhaust manifold (one on each side). Everything else stays the same.
 
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thats amazing, thank you so so much for your help boys, its very much appreciated, after i read it the frist time i thought "nah, never gonna work" now i've seen the pic, the light bulb came back on "oh yeah ! " lol
 

Vumad

Super Hero, with a cape!
Location
St. Pete, FL
View attachment 213889View attachment 213890
got it all together and got the beast started after 5 mins faffing about, currently in bed on a respirator, water test next week !!!

It's still wrong.

attachment.php


Run it how you think is best. I pretty sure that is not best.

Think about it. Why do you have 2 pissers fed by a single cooling line? You don't get any more flow that way. People don't run extra pissers because it looks cool. There's no function to that routing.
 
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Vumad

Super Hero, with a cape!
Location
St. Pete, FL
That's not a b- pipe.

Why would that matter? Most wet pipe work the same. 650 westcoast or B-pipe, you still run 2 cooling lines. The stinger is fed by the single cooled water (engine only) using the flow restricter and the double cooled water (engine then pipe) goes out unrestricted.

If it's not right, please be more specific.
 
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ride report !!!!!

well after a few teething problems with the battery/leads etc I finally got it in the water today, runs really well with loads more bottom end than the last one, blipping the throttle lifts it out the water, really strong pickup, even in white water ! carbs need setting up properly tho, running a bit rich atm, but...............
the way it rides is awesome ! nice and flat without being to nose up, feels a lot lighter than the last one and fak me it dose steer quick ! most of which comes from the back end, rather than waiting for the front to turn first, it pushes the back round, feel loads more connected to the front with real good stability, carves and turns a treat, to say im chuffed is a bit of an understatement !!!
 
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