Heavy Duty WGFV N75

[Rusty]

ETA on some 3 port action Bo?

[Ross]

+1 more wanted here when you get more Bo

[Jamo]

You do know you can order these direct if he hasn't got any

http://www.s2forum.com/forum/showpost.php?p=435626&postcount=51

http://www.s2forum.com/forum/showthread.php?t=38379

[Henkjan]

I found out the long way that it is better to read than to just look at the pictures (the ones in the 1st post)... I installed the new N75 (3 port, straight swap from OEM) and the car did not run OK, a short bit of boost, and then nothing, fault code on high pressue. so OEM valve back in and all was normal. (as usual with my S2, I spent most of the time having to remove all sorts of other parts to recover fallen bolts) I also noticed that the open path of the valve appeared different that the OEM. so then I re-read this threah and found that I had missed clear advise... twice

The port on the valves are labelled. One the 3 port valve with oem fitment port 2 connects to the lower part of the waste gate, port 3 connects to the turbo and port 1 connects to the air return MAF hose.

Ahh ok, So you need to connect all the 3 bronze hose connectors to the valve. And don't use the exhaust one i supplied with it.

Then remove your current WGFV and see which one of the 3 ports doesn't allow any pressure to go through it when you blow in them. (its the longest one that connects to the MAF - Trubo hose) replace the new valve the same way. So check it for which connection blocks air and connect that to the MAF - Turbo hose. Then the other too the same as the other valve.

so, to help all others who read the Donald Duck rather than Harry Mulisch, adjusted the pic for the 3port valve:


[edit: uploaded better pic, read the remainder of the thread to see why]

[Sonic]

Hmm, that pic is different to how i have mine:

[Jamo]

That does not look right Sonic

[Sonic]

Cheers Jamo.

Does anyone definitively have the correct way it should be?

[Jamo]

It's as henkjan says, the port on the side is the exhaust port, this is the one you have connected to the turbo but it should actually be connected to the maf hose.

See here http://www.frightprops.com/support-pneumatics-solenoids

[Sonic]

So "air in" is the line that goes to the turbo?

Just trying to imagine the flow of air and how it all works!

Basically i need to swap the MAF and turbo connections.

Cheers

[Jamo]

Thats it

air in = turbo line
air out = wastegate
exhaust = maf hose

[Henkjan]

in the drawing I posted, the numbers correspond to the numbers on the actual valve, the position of the connections is different. on the valve port 3 is the one in the middle (on the same side of the valve as the label is, the port facing the camera in this photo), 1 and 2 are on the sides of the valve


so when I look at the numbers on the valve, this:

looks correct to me

[Henkjan]

Basically i need to swap the MAF and turbo connections.

no, that's how I initially installed it, and that was wrong

[Sonic]

no, that's how I initially installed it, and that was wrong

Cheers, no change required then

[Henkjan]

Cheers, no change required then

well, I would personally fasten the hose that goes to the turbo a bit better

[Sonic]

well, I would personally fasten the hose that goes to the turbo a bit better

Already done, and all ports sealed with PTFE