Dual cooling help.

[thesquier]

So ive perused sone threads but most are about the factory pipe and not a riva pipe im trying to add the second pisser off the side and this is how i have the lines hooked up. Is this the best way? I will place a finger on the lines that head out to the pisser.

 

[thesquier]

 

[JT_Freeride]

You want both head pisseres to go over board and the line from the top of the pipe should have a tee to the stinger and that tee goes over board.

 

[JT_Freeride]

If you have single cooling from the pump then it's the rear head line goes to the bottom of the pipe. Stinger line stays the same

 

[Tyler Zane]

This is how I like to run mine. One line for engine and one line for exhaust.

Pic is courtesy of Superjet Geoff

 

[thesquier]

Only issue is the riva pipe doesnt allow the block to fill with water through the manifold. So i have to leave one head elbow as water in. Unless im missing something completly

 

[thesquier]

Best pic i have of the manifold. But if you zoom in you can see there is not any access to the block and only one fitting. Then that would have to be used to fill the pipe water jacket then it comes out the top into the head. Then out the other sode to the stinger

 

[Vumad]

This is how I like to run mine. One line for engine and one line for exhaust.

Pic is courtesy of Superjet Geoff

This is parallel cooling.

 

[thesquier]

Heres a pic of the top of the manifold showing the waterline setup to get water to the pipe from the manifold

 

[thesquier]

 

[Vumad]

So ive perused sone threads but most are about the factory pipe and not a riva pipe im trying to add the second pisser off the side and this is how i have the lines hooked up. Is this the best way? I will place a finger on the lines that head out to the pisser.

Dual cooling and singkle cooling are pretty much the exact same, except 2 lines go to the manifold, and 2 lines come off the head.

Similar to a b pipe
-2 lines in from the pump.
-1 line off the head goes to a pisser, i like the rear cylinder as it is hotter.
- the other line off the head has a tee (this tee is optional, but allows you to restrict pipe pressure while maintaining cylinder temp)
- one side of the tee goes to a pisser
- one side goes to the head pipe
The line off the head pipe goes to a tee (this tee is optional, but will run your waterbox dryer), flow control goes here
- one side goes to the stinger
- one side goes to a pisser

Move tees and flow control as necessary to control temps.

 

[Vumad]

Best pic i have of the manifold. But if you zoom in you can see there is not any access to the block and only one fitting. Then that would have to be used to fill the pipe water jacket then it comes out the top into the head. Then out the other sode to the stinger

If you only have one fitting on the manifold and dont want to add another, then run parallel cooling. See post 5.

All head pipes have 2 fittings on them. The water goes from the manifold to the motor, then from the motor via a line to the head pipe. Even if a manifold does have an open water jacket, the gasket blocks it.

 

[Vumad]

Heres a pic of the top of the manifold showing the waterline setup to get water to the pipe from the manifold

View attachment 279237

How many fittings do you have on your manifold, on your pipe and on your head. And does the manifold have an open water jackert where it bolts to the motor.

 

[thesquier]

Ok so it sounds like i messed up my terminoligy. Anyways all i want is to run it a bit colder. Somehow as it gets a bit hot nothing dangerous but hotter than before the pipe was added.

So i should isolate the pipe from the engine water?

Can i tap the block sonewhere to fill from the
bottom instead of the top?


Is the fact that theres no water in the manifold to block area gonna fubar stuff?

 

[thesquier]

Ok so. Manifold has one fitting on the bottom(water from pump) then on top there is a fitting (hooked to the lower pipe fitting) then there is the fitting at the top of the pipe.

The head has two fittings.

The manifokd is blocked off to the block where it mounts to the cylinders.

 

[Vumad]

Ok so it sounds like i messed up my terminoligy. Anyways all i want is to run it a bit colder. Somehow as it gets a bit hot nothing dangerous but hotter than before the pipe was added.

So i should isolate the pipe from the engine water?

Can i tap the block sonewhere to fill from the
bottom instead of the top?


Is the fact that theres no water in the manifold to block area gonna fubar stuff?

How many total fittings are on the manifold
how many total fittings are on the pipe
how many total fittings are on the head
does your manifold have an exposed waterjacket where it bolts to the motor ( if unsure, post a picture of manifold)

I suspect the answers are 3, 2, 2, yes, but ppease verify

 

[thesquier]

Oh and then the fitting for the stinger on the pipe so three including that.

2,3,2

 

[Vumad]

Oh and then the fitting for the stinger on the pipe so three including that.

2,3,2

Does your exhaust manifold look like this. Bolt holes and cooling jacket holes.

l

 

[thesquier]

Honestly now i cant remember. Youve got me second guessing my self. I didnt remember seeing any. And of course the only pic i have is horrible

 

[Vumad]

Honestly now i cant remember. Youve got me second guessing my self. I didnt remember seeing any. And of course the only pic i have is horrible

It should have an open jacket. Thats how the motors are cooled. Water flows from the manifold and into the cylinder, then out the head. I am trying to verify because you seem to be describing that it does not have this, which would be odd. I understand your pipe is installed and it will be a lot of work to uninstall it.

So do this...

Remove your cooling line from the through hull fitting, leave it connected to the pipe on the bottom, you are going to hook your hose up to this line.
remove the hose on the top of the manifold that connects to the pipe. Put a 12 mm bolt in the line and secure with a zip tie. This will block up the top fitting
Take the hose connected to the head from the pipe and hang it off the side of the boat. Leave the one hooked to the pisser hooked to the pisser.

Flow water. The water should go in the bottom fitting, fill up the motor and exit out of the 2 lines on the head. If such is the case, your current setup is incorrect. If water does not make it to the cylinder, then your manifold for some reasom doesnt have an open cooling jacket and youve done all you can do.