New silicone hose? Like from the WWW.SILICONEINTAKES.COM site or?
88 650sx troubleshooting
- Thread starter KIDbilly
- Start date
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Silicone hose or OEM hose will be fine, even a piece of radiator hose will work , you want it one piece if possible to eliminate as many potential leak points as possible , post that Aquamuff up for sale when you take it off some fool will probably take it off your hands.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
ake a screwdriver and remove that cap, it's just a plastic cap that pushes on there , then you can adjust it all you want , I always start at 2 turns out on the high and low speed and adjust in from there, it is easier to adjust from rich to lean than vice versa .
Got the ski out on the water this weekend it ran great! Thank you all for the help!
Still figuring out the aquamuff situation as the ski is already really loud. I do not want it to be any louder. If fact it would be great to make it quieter. Almost need ear plugs when riding it.
Still figuring out the aquamuff situation as the ski is already really loud. I do not want it to be any louder. If fact it would be great to make it quieter. Almost need ear plugs when riding it.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
What kind of waterbox does the ski have in it , does it have the correct amount of water going into the waterbox ?
I looked back through your photos and noticed you have a line coming straight off the head going to the pisser , it also looks like it's going to an Aluminum pisser outlet .
The stock one is plastic going into rubber and the line is fairly small as is the outlet on the pisser , it does not divert that much water , the aluminum ones have a much larger outlet hole and diverts a lot of water ., you are running a much larger line to it and diverting a lot more water.
That will work great if it has dual cooling but if it has single cooling you are diverting a lot of water away from the waterbox which will make it much louder , check and see if there are two lines going into the exhaust manifold or just one , if it's just one you might consider replumbing this thing to put some water back into the exhaust somewhere to quieten it down a bit .
If it were me I would take that line from the head to the pisser off, put a pipe plug in the head where the nipple is at , then get a tee and tee into the line that runs from the back of the pipe to the pipe stinger , that will put most of that water back into the waterbox , as is you are dumping half the water out the pisser, I would also consider tapping the hole in the pisser and restricting it with some kind of jet or driving something into the hole and drill it out to a smaller size, anything that will restrict the water flow will work .
There are several options here , find a metal tee thick enough that you can drill and tap the leg of the tee going to the pisser, then install a jet in that leg of the tee and hook it all up, you could also drill and tap the pisser itself on the part you hook the hose up to and put a jet in it , also Seadoo makes fittings for it's tuned pipes that have a much smaller hole internally you could possibly put one of those in somewhere , regardless of how you do it just remember that on a single line cooling system the more water you put out the pisser line the louder it is going to get , no way around it .
To me it looks like someone installed that bypass , dumped half the water out the side then realized hey , this thing is way too loud so the installed the AQUAMUFF which as I said earlier does very little in the way of quieting down the ski , at most it will knock it down a few decibels .
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It looks like it is a Mariner water box.
Yes, do restrictions on that pisser, looks like maybe 3/8" diameter hole.
So there is one line going into the bottom of the exhaust manifold (Silver), then there are two lines in the start of the exhaust bend (black), not sure what is is called. But in the black bend there is one directly from the head, and then one exiting the back to the thin end of the exhaust expansion chamber.
Yes, do restrictions on that pisser, looks like maybe 3/8" diameter hole.
So there is one line going into the bottom of the exhaust manifold (Silver), then there are two lines in the start of the exhaust bend (black), not sure what is is called. But in the black bend there is one directly from the head, and then one exiting the back to the thin end of the exhaust expansion chamber.
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WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Yes that is single cooling , the Mariner waterbox is going to be louder regardless but you are correct , the way they have that water routed it's going to be obnoxiously loud , the one exiting the pipe going to the thin end of the pipe is the one I am talking about putting the tee in for the pisser , the one exiting the head going to the pisser , remove it and cap it off on top the head .
There are a zillion ways to restrict water flow to the pisser , I listed a few but quite simply anything that will fit inside of the hose and has a smaller diameter hole in it will work , a small brass fitting , a piece of pipe , etc , look in the pipe fitting and specialty bins at Lowes, Home depot or any decent hardware store and you will probably find something that will work , carry a pice of hose with you to check for fit , just shove it in the hose end and hook the hose to the pisser , no drilling, no tapping .
All you want that pisser to do on single cooling is indicate that the cooling system is flowing water , as is I bet that thing has a massive stream of water flowing out of it.
There are a zillion ways to restrict water flow to the pisser , I listed a few but quite simply anything that will fit inside of the hose and has a smaller diameter hole in it will work , a small brass fitting , a piece of pipe , etc , look in the pipe fitting and specialty bins at Lowes, Home depot or any decent hardware store and you will probably find something that will work , carry a pice of hose with you to check for fit , just shove it in the hose end and hook the hose to the pisser , no drilling, no tapping .
All you want that pisser to do on single cooling is indicate that the cooling system is flowing water , as is I bet that thing has a massive stream of water flowing out of it.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Try that forst and LMK how it goes , if it still doesn't quieten it down to your satisfaction I may have a stock waterbox in a ski somewhere we can work a trade out on , anytime I build anything I put rear exhaust on it so even with an aftermarket waterbox it isn't that loud.
My 650SX doesn't even have a waterbox, I am running two inline resonators and rear exhaust with a lot of water going into the resonators , it's still not that loud .
My 650SX doesn't even have a waterbox, I am running two inline resonators and rear exhaust with a lot of water going into the resonators , it's still not that loud .
Not pretty, but enough for testing. Does that appear to be like what you explained? I tee off the one line coming from the back of the exhaust plentium. Then capped that other line coming off the head with a bolt.
Awesome, I will keep you posted on that once I get it back in the water. See if it quiets down at all. The straight exhaust mods do seem ideal and a cool project.
Awesome, I will keep you posted on that once I get it back in the water. See if it quiets down at all. The straight exhaust mods do seem ideal and a cool project.
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WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
That should be a lot less noisy , maybe you can ditch the earplugs now lol .
As to running for awhile and shutting off. I would check the fuel tank, clunks, lines in and out of the tank, shut off (if it has one) for dirt or sediment. I would replace the fuel filter if you already haven't done it. Sometimes a filter will have dirt in it and when the ski is sitting the dirt will settle to the bottom of the filter. So the ski will start up and run for awhile. As you ride the dirt gets stirred up and plugs the filter cutting of the fuel flow.
Myself
manic mechanic
- Location
- Twin Lakes AR
For muting down the exhaust.........https://www.x-h2o.com/threads/550sx-to-750-all-or-nothing-build.208950/page-2#post-2142045
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WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Cool idea
Myself
manic mechanic
- Location
- Twin Lakes AR
.......and it works!
Sheesh, just a little bit of work! Looks like a sweet project. I am not sure exactly from that thread what is quieting the exhaust besides making is a rear exist. Is that the main point?
Myself
manic mechanic
- Location
- Twin Lakes AR
The aluminum mesh rolled up in little rolls and shoved into the waterbox.
Try this link.. https://www.x-h2o.com/threads/550sx-to-750-all-or-nothing-build.208950/post-2142045
that should take you right to the post about it.
Try this link.. https://www.x-h2o.com/threads/550sx-to-750-all-or-nothing-build.208950/post-2142045
that should take you right to the post about it.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
I have
If I remember right those Mariner boxes are made just like the stockers and use the aluminum elbows, if so he can do as you suggest , the PJS box I have has curved aluminm tubing and ditched the stock elbows so it's no go on that one , you would never get it in there .
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- Location
- Riverside, CA
I have an 88' 650sx which I do not have much history on, but the ski has ran recently and it ran great. However, it has some starting/idle issues and the bigger issue is about after 20 minutes or so (it varies each time) the ski will stop running out in the water.
- PJS exhaust manifold and exhaust pipe
- Cylinder head
- Ride plate and potentially aftermarket pump.
and if your engine restarts after it has a chance to cool down after a few
hours, then you should perform an ac voltage test on the stators ignition
coil.
Your ski is a good example of a limited 650 product that dealers sold back
in the late 80's. All the major companies were selling BN44's.
Bill M.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
A little late to the party Bill , did you at least bring drinks ?