Wiking

How Nissan V6 cool ants run?

Next pics & text depict how our V6 is cooled [some details only for VG30E]. As still missing some pics, the explanation misses some details.

Compiling these pics was a long and time consuming process as I do not have explode engine, so it might contain errors. Those who have opened their engines, please comment, correct me. Plus idea what should the text & pic contain...

Waiting still from u for real high q pics... some have already promised. And thanks for the pics already received...

Thanks in advance.

Pump flow...




Pic 1. Engine Block flow
1. Water pump pressurized coolant flows from engine block into main channel.
2. Block main channel distributes around cylinders.
3. From cylinders flow continues to both heads
4. ...and out of cylinder heads.





Pic 2. Cool engine circulation
5. Coolant is directed into the lower intake passage.
6. From the intake assembly, the main coolant flow goes to the Temperature Sensor (Ts) assembly with three hose joints.
7. Also Cabin heater core gets it flow from intake right hand end.
Ts. Tri hose connection, free flow in any direction. Contains Engine temperature sensors, One for EGR, one for ECU.
8. Main hose to radiator. Some minor flow goes through here in all cases.
9. As engine is cold, thermostat bypass route lets coolant pass.
10. The thermostat housing direct flow via channels to the engine block. Waterpump vacuum sucks this coolant again for circulation.



Hot engine cooling:
R. Liquid flowing through Radiator is cooled.
11. Cooled liquid main return line.
12. Return line from Cabin heater core
13. Return line from Cold Idle bypass Valve



-22- ...someday ...missing still TB & Cold Idle bypass Valve circuit plus bleed valve circuit

See: http://www.cardomain.com/memberpage/748507/8

Have a cool day!

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maximaboi

iTrader: (1)

WOW. good work.

maximaboi

iTrader: (1)

Sticky

Vadim-93GXE

Thanks Walt. Very interesting. Where did you get these pictures from?

Wiking

Basically I drew them myself - some manual pics were 'at bottom' to get the outlines lookalike. Why I started this, was, because of the 'some' weird maxima heating problems discussed on this forum...

The adobe thing is straighforward; getting right details illustrated is just patience. But info of how the water flows, thats located nowhere. So I have no real info, basically the pics is a guessing how it could work. That is because no FS manual goes into detail...

That is why I am still asking input as I am now/still interested/have time to correct any errors. Also getting detailed pics on all angles of lower intake, thermostat housing and its attachements is imperative. (my engine is intact)

Note: The cardomain always crushes the pics to smithereens: poor quality is cardomain picture trademark.

Peripherals [=upper intake] pics and updated text is found at:

click: http://www.cardomain.com/memberpage/748507/8

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BTW! I think here sits the reason for horrible city mpg: heated intake. There is no place on earth with such heating as maxima air intake between cyl blocks. Just howling out why??? Why nissan goes spoiling the great car with *hot* intake air?

Next comes the inevitable q: Whattodo to get cool idle/low rpm -air into cylinders?


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