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Featured Replies

that will be a god send to someone great find.:bow::duffer:

 

dan.:cool:

  • Author
that will be a god send to someone great find.:bow::duffer:

 

dan.:cool:

 

yes, it does make you "understand" the bay a lot more, helpfull for finding vav/boost leaks,

 

and also when removing some of the non required bits like AIV & FPRV etc

Thats excellent. Should be really helpfull to some.

 

 

I had a bit of a play with it, to show how it can be simplified, like I have done to my own Z :

 

attachment.php?attachmentid=50262&stc=1&d=1252152853

tt_vacuum_diagram_modified.jpg

Edited by Yowser


the only thing i can see different is the boost sensor is on the other side but worth keeping for future reference.:duffer:

 

dan.:cool:

  • Author

heres mine, even simpler! :)

 

AIV, FPRV, EGR, carbon canister, recircs deleted

 

tt_vacuum_diagram.jpg

 

 

there is another vacuum tho that apears to be missing off the initial diagram,

 

theres one on the drivers side, towards the back.

heres mine, even simpler! :)

 

AIV, FPRV, EGR, carbon canister, recircs deleted

 

tt_vacuum_diagram.jpg

 

 

there is another vacuum tho that apears to be missing off the initial diagram,

 

theres one on the drivers side, towards the back.

 

Same as mine but you ditched your recirc valves and blocked the pipes up ? Why ?

its not a good idea, when you shut off the excess boost pressure is sent through the Turbine blades causing them to decelerate - which reduces turbo life and increases lag between gear changes.

Edited by Yowser

Excellent! This will come in very handy for checking for boost leaks!!! :D :duffer:

Z.bmp

  • Author

legrath,

 

i experimented with them before, kept the re-circs in, but just removed the return hose from them (pipe that goes from the recirc to the air filter intake)

 

they sounded like mini HKS SSQV :)

 

 

when i did my NA to TT conversion, it was quite a nightmare getting the intercooler pipes back in, its so tight down there, along with the oil cooler there etc, was easier just to remove & block them off to get them in.

 

and thats with the air-con rad removed aswel!

 

am aware of the compressor stall issue, but Nissan make several cars without re-circs so think its just more over-engineering they did :rolleyes:

 

(PS i know thats a whole different debate so lets try not to hijack the thread :wack: )

i have 1 forge dump valve fitted to my z and i have a standard recirc on the other side with standard set up, could this cause a problem? and also is there goin to be any benefit from blockin off the return hose on the recirc?

cheers

lew

Put both the original ones back in and there is no benefit from blocking off the retrun hose.

 

Z32 have you plumbed the return in, before or after the AFM?

  • Author
Put both the original ones back in and there is no benefit from blocking off the retrun hose.

 

Z32 have you plumbed the return in, before or after the AFM?

 

 

i have removed them completly at the mo, and just blocked off the holes

(on the IC pipe, and the hole on the rubber T piece which the AFM goes to)

 

 

 

when i had the re-circs on "HKS mode" i just had the recirc plugged into the metal IC pipe,

 

then the rubber return hose removed from the rubber T piece which the AFM goes to, and blocked up

 

(obv still had the vacc pipe on the top aswel)

 

the air isnt re-curculated back thro, as the return pipe is removed, so the air is just vented out through the re-circ sorta, which makes it sound like a dv

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