Help! Cooling lines 701 61x

[Linus]

This is my first crack at putting a ski together.. I have a 94 SN superjet with a 1996 701 61x, with a Factory B Pipe. It is set up for dual cooling, but I am not sure as how to set up the water lines. Just want to make sure I have them routed correctly. Any input or if someone has a diagram that would be great.

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[Fro Diesel]

I run both lines from the pump the the manifold. Bottom of headpipe to pto cyl head. Mag cyl head to pissers with restrictor for right engine temp. Top of bpipe to a "t" then to a flow control valve to dry out the chamber stinger and in between that the center of the "t" goes to the 2nd pisser. Also put a restrictor in right after the top of bpipe headpipe to keep pressure up in the headpipe.

 

[Linus]

I run both lines from the pump the the manifold. Bottom of headpipe to pto cyl head. Mag cyl head to pissers with restrictor for right engine temp. Top of bpipe to a "t" then to a flow control valve to dry out the chamber stinger and in between that the center of the "t" goes to the 2nd pisser. Also put a restrictor in right after the top of bpipe headpipe to keep pressure up in the headpipe.

My cylinder head only has the stock water fitting. Wasn't tapped for a second. But the mani is tapped both sides. Do I need to tap and thread the other cylinder head? Or can I run just the stock one?

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[Tyler Zane]

If the ski only has one cooling line from the pump then Tee the line into the exhaust manifold (since its already dual tapped). If it has dual then run each line individually to the exhaust manifold.

After that just run the single head outlet to the bottom of the head pipe. The top line from the head pipe can be Tee'ed off to a pisser and the stinger /w a restrictor or flow control valve.

Pretty straight forward, don't go tapping a stock head for dual outlet lines. It wasn't engineered to properly cool that way. On a side note you are going to have to run the little line from the head overboard too. Its there to release air pockets that can build up on that side of the head.

 

[jpswift1]

I know this is an old thread, but why shouldn't you tap a stock head for dual cooling? I've seen people do it, and it seems like it'd be better than just the stock single cooling set up.

 

[Big Kahuna]

You can.

 

[mikidymac]

There isn't a need for dual cooling on a stock ski or with just a pipe unless your lake water is really warm.

 

[jpswift1]

You can.

I just got done tapping my stock head and it worked great. Now my dual cooling setup is all done. With my milled stock head (for around 165-170PSI I believe), the pisser was shooting out water that was a little warmer than I would have liked, so now this will be fixed. I also tapped my Factory B pipe manifold with a second elbow so I'll have two water lines coming in.

 

[wydopen]

I asked this in a separate thread but didn’t get an answer. I’ll ask again while this is at the top..anybody ran dual cooling on a stock pipe? Would do it for clogging purposes..my sons 550 with single cooling has already clogged once. Where we ride there’s lots of kelp and when the waves are big sand/pieces of shell in the water..not sure the best place to tap the manifold since there’s a thicker spot where the original is..

 

[mikidymac]

Not sure about the dual cooling but we would run these on our skis when we used to ride the surf in Santa Barbara nad Avila and never had any issues.


We would check them every so often during the day and keep and eye on the pissers.

 

[wydopen]

Not sure about the dual cooling but we would run these on our skis when we used to ride the surf in Santa Barbara nad Avila and never had any issues.
View attachment 406612

We would check them every so often during the day and keep and eye on the pissers.

usually clogs in the fitting off the pump..Guess I could do two in from the pump and T into one..

 

[kevbo]

Ride in cleaner water!

 

[mthomps]

Ride in cleaner water!

Right?
Its simple wydopen. Sell your house, change careers, uproot the family, and whatever. Having clogging problems on a ski is silly when there's so many clean bodies of water all over the world

 

[wydopen]

Ride in cleaner water!

Good waves > “clean water”

I’ve never had a problem but I’ve always ran dual cooling. Only time I’ve ever clogged was trying to launch in 15ft shorebreak on the biggest day in 30years..was so much sand in the water it completely clogged both lines..that’s why I want to put it
On my sons ski with stock pipe..couple rides ago he got a little piece of kelp that went perfectly into inlet on pump which cut our ride short in perfect waves 2miles from where we launched..Would like to avoid that again..