coolant line routing questions.

[Ryanlilly]

So I removed my front cooler on my edge for my drop and roll, I'm using a VE tunnel with their rear cooler. So my question is with the front cooler removed how do I run my coolant lines correctly?

I was looking at it tonight and it seems to me that if I turn my thermostat hosing 180 degrees and hook it to my left running board cooler. Then the line underneath the head stays the same. Then the 1 inch hose off the water pump I can tie my overflow bottle into that, then go from there to the brake caliper and into the right edge cooler?

Is this correct or am I all screwed up? If anyone has pictures that would be awesome.

 

[markis24]

Basic Diagram might make it easier to look at as a whole.

 

[boxster7614]

I ended up cuting down my front cooler due to my drop and roll, it was hiting my jackshaft. I spliced it and rewelding it so coolant could only flow one way through the front cooler (now there is only one in and one out instead of 3). I like to have the added cooling and I had plenty of clearance to run the front cooler. I also was swaping my 700 motor and putting in my UBR900 which I felt needed the added cooling.

This is how I ran my 700 set up before I put my modified front cooler back in. I pulled my thermostat; I never run them in any of my mountain sleds. I bought a plug for the fitting that goes under the head since it is not needed and just plugged it off. That leaves only one way for the coolant to flow out of the top of the motor. Coolant should flow from the top of the head (thermostat housing) into the break housing and then progress through the right running board back to the rear cooler, progress down the left running board, into the coolant bottle, through the water pump, throught the motor and again leave through the top of the motor. I bought some heater line and ran it from the left side cooler board (clutch side) and zip tied it behind the clutch. I used one of the other hoses that had bends in it to mimic the way the coolant line runs up the brake side to go up behind the clutch and spliced it in. I then ran it between the air box and gas tank. (make sure it’s not rubbing on clutch) Since the coolant hoses change diameter, I cut one of the hoses and spliced it into the new heater hose with a barbed coupler and some clamps. The other end goes into the coolant bottle. Now you just have one simple cooling circuit.

This is the only pic I have of the cooling line before I went to my new setup. but it shows where I ran the heater hose between the tank. But all the lines are kind of tucked out the way in the pic but I think you can get an Idea. the end that is tucked under the steering post went straight forward into the coolant bottle. (note you can also see my modified cooler with only one fitting sticking through)

 

[boxster7614]

I was just looking at some of your other build pics and it looks like polaris changed the way they ran the thermostat loop. Yours has that skinny little hose that goes from the water pump to the back of the head. On the newer sleds starting with the 2003 vertical escape they ran the thermostat loop through the front cooler. That is what I bypassed on mine. Sorry if Im confusing you.


And get some updated pics of that sled already!!!! I thought you were planing on running a turbo?

 

[Ryanlilly]

So what is the purpose of the small diameter hose that also comes from the water pump and goes to the underside of the head?

 

[boxster7614]

You posted while I was typing, that is your thermostat loop. If you want to pull your thermosat just plug both ends off.

 

[Ryanlilly]

I was just looking at some of your other build pics and it looks like polaris changed the way they ran the thermostat loop. Yours has that skinny little hose that goes from the water pump to the back of the head. On the newer sleds starting with the 2003 vertical escape they ran the thermostat loop through the front cooler. That is what I bypassed on mine. Sorry if Im confusing you.


And get some updated pics of that sled already!!!! I thought you were planing on running a turbo?

Yea I've been slacking on the pics, just been busy working and trying to find time to work on the sled. 12 hour work days are not helping.... I'll try to get some up soon. And yes still running a turbo.

 

[Ryanlilly]

here are some pics

 

[Ryanlilly]

Is there any harm in switching how the coolant? I want to go from the thermostat down the clutch side edge cooler then from the brake cooler to the coolant bottle to the water pump.

Thanks guys!