08-03-2010, 12:18 PM #1
785 Triple pipe water cooling explanation
Can someone explain eaxactly whats going on in the triple pipes in relation to the water flow.. where it starts, what happens to it, does it get sprayed in? or just flows by pressure or? the speed of the ski? or engine rpms?
Does the water flow back n forth thur it or just 1 way? whats the 4 way valve for? does it devolop pressure or is it just way to exit the water all together? do bigger pissers have an effect on performance? like a 1/4 verses a 3/8?
what about the jetworks valve in or not?. do the exhaust valves work in conjunction with the water and flow pressure?
I get the idea of how they work with the pressure waves cramming the fuel mixture from the pipe into the cylinder.. but thats on the inside of the pipe. if your rpms are right, it all gets crammed back in the cylinder..
if not you just loose that part of the charge and loose horse power because of it.
thats why they are gas hogs.. whether ya use it or not, it goes right thru.lol
I hear you can shorten the pipes for higher rpms or tighten up the stingers to increase the heat in the pipe. shortened pipes shorten the time it takes for the presuure wave to return to the cylinder.
so that would mean the water would have less time to cool off also. it goes thru the system faster. although your generating way more heat too in the pipe because of the higher rpms. so things would even out i would think as far as temps go. my pipes are in the lows 100's or high 90's.. not hot at all..
But the inside flow I dont understand fully. Thanks for any insight..
Now that im thinking about all this. it is a handful.lol
08-03-2010, 12:34 PM #2
08-03-2010, 06:43 PM #3
well that clears things up.. thanks.. quit breaking your ski!!!!!! its summer! wait till fall on a cold october day, then break it.lol anyone else have anything to add?
08-04-2010, 03:52 PM #4
- Join Date
- Jul 2007
- Cedar Rapids,Iowa
08-04-2010, 09:55 PM #5
great thread dano. thx.. I believe I have the watcon routing already and the jet works valve.. bot those pipes are whole different subject I see.. it can get complicated. this year had that, he left,someone else did another designm then randys routing.. Randy knows his stuff!
06-17-2013, 01:03 PM #6
- Join Date
- Sep 2006
i know this has been beaten to a pulp, but i just want to make sure i get it right. With the Watcon water routing, the E marked spots in the diagram (water out from stingers) is unrestricted, however, my service manual says these are calibrated orifices and should not be changed. What is the reasoning behind taking them out? Thanks guys.
Last edited by slx1200; 06-17-2013 at 01:05 PM. Reason: spelling
06-17-2013, 01:34 PM #7
You don't need a restrictor on the outlet E of the pissers because the water is already restricted at the red water manifold at outlet A.
06-17-2013, 01:42 PM #8
- Join Date
- Sep 2006
and since my water manifold is stock on a 1999 this should already be there correct?
06-17-2013, 01:50 PM #9
Double check inside the barbs in the red water manifold. They should already have a small orifice in there. I didn't have to make any new orifices on mine.
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