dmax cooling flow.... simon......

[malibu795]

as per discussion last night in the chat room here you go simon
the pipe my finger is on is the coolant recirc line

this is the turbo coolant supply line

this is you coolant for your cabin heater

this is turbo coolant return/discharge

looking at the water pump through the suction inlet pipe

looking at the w/p throuhg the re-circulation inlet hole

the other two is the discharger pipe from the water pump to the oil cooler and that connects to the intermediate/back plate

coolant path is form pump
to oil cooler
to back plate
to cylinder walls
to heads
to y-pipe
the cabin heater supply is tapped into upstream of the t-stats
the turbo coolant line is tapped in to the re-circulation line

that make sense simon? :baby:
the only thing that is regulated is the main upper radiator hose going to the radiator. there are hole ~1/8" in the steel of the t-stats nothing else is regulated

 

[duratothemax]

you have the turbo coolant supply and turbo coolant return backwards If im not mistaken.

 

[malibu795]

you have the turbo coolant supply and turbo coolant return backwards

prove it

 

[duratothemax]

because that brass thing with the nipple on it on the upper metal radiator hose? thats a mini thermostat for the turbo coolant circulation circuit. The turbo doesnt get any coolant flow until 135 degrees or something, when that mini t-stat opens.


I might be all wrong tho...

 

[malibu795]

mine is a straight shot and completely open from the factory

 

[NelsonDiesel]

Turbocharger Bypass Valve (6.6L Diesel Engine)
The turbocharger bypass valve is a temperature control valve. The valve is located in the turbocharger coolant inlet hose at the water outlet tube.

The purpose of the valve is to close the coolant flow through the turbocharger. Closing off the coolant flow through the turbocharger avoids turbocharger overcooling.

4th pic

 

[malibu795]

i can understand it being regulated.

also you are still backwards on the coolant flow.

 

[duratothemax]

also you are still backwards on the coolant flow.

prove it

 

[sweetdiesel]

mine is a straight shot and completely open from the factory

Adam Thankyou for the info If you pull the brass plug off it does have a spring and regulator like stewie and ben posted,Some people gut them
myself i just put a 3/8s bung a couple inches away and removed and plugged the brass thingy

Now as far as my concern last night the 1" or so pipe that goes directly to the bottom of the t-stat housing is or is not regulated by the T stats?
as far as I can tell it is NOT i pulled the t stats again today and can stick my finger thru to the 1/2" or so pipe that comes off the housing

lastnight Im sure we where on the same page just reading different:hug:

 

[sweetdiesel]

My question was regardless of the motor Does the coolant flow constant to the heater core?

 

[ripmf666]

Cooling System Description and Operation

Link boys read up http://www.duramaxdiesels.com/forum/showthread.php?t=6441

 

[malibu795]

prove it

were is the pressure to drive the coolant form the return line into the turbo? the the is regulated at ~13X* and the t-state set at 180-190*

the flow/pressure is generated in the re-circulation tube and the regualter/bypass vlv is the discharge. the regualtor senses the coolant temp coming from the turbo NOT going to the turbo. and if it get too cold it close and shut the flow through the turbo.

 

[duratothemax]

Bu here is your answer

The turbocharger bypass valve is a temperature control valve. The valve is located in the turbocharger coolant inlet hose at the water outlet tube.The purpose of the valve is to close the coolant flow through the turbocharger. Closing off the coolant flow through the turbocharger avoids turbocharger overcooling.

 

[malibu795]

so how do you get coolant flow in reverse on the upper radiator line?

 

[NelsonDiesel]

ben, malibizzle is on his game today.....

explanation shortly

 

[NelsonDiesel]

per GM

 

[NelsonDiesel]

gm has it poorly worded throughout....

I looked through Service information and found a step by step how to pull something... and it tells you, now pull this, then this and it shows pics of these items. The way the pics are and the way it is described - that is how the coolant flows.

 

[sweetdiesel]

thanks stewie that exactly what i was thingking on the heater hose line and that just confirmed it

Adam you where correct on the flow yu da man

 

[malibu795]

the pipe that my finger is on greg you marked backwards it flows from below the t-stats to the water pump since it dumps out on the suction side of the pump

 

[sweetdiesel]

the pipe that my finger is on greg you marked backwards it flows from below the t-stats to the water pump since it dumps out on the suction side of the pump

prove it.....just kidding Adam:rofl:
ok then that changes everything