034 Race N75

[S2_Dave]

Does anybody know what the OEM p/n is for the 034 Race N75 valve? Or if it really is an aftermarket N75 valve, where one could be sourced from within Europe? I might want one quickly.

I'm sure it's already been on the forum, but I can't find it .

[terrybullwon]

I thought that this is just a 3B J valve for the 1.8T boys?

[S2_Dave]

I know they sometimes use S2 N75s to get more agressive boost without having a remap, but I thought the 034 "Race" was an uprated version for S2s. I'm sure I've read a thread about how much S2 N75s (and alternatives) can hold before they start to leak boost.

[terrybullwon]

Yeah i use a J valve in my golf along with a remap and a bleed valve sometimes

Found this refering to "race valve"

http://www.ecstuning.com/stage/n75-info.html

[S2_Dave]

So what's the best one to use on a high boost S2, given that there's a few reports on the forum that the stock one doesn't last long?

[terrybullwon]

Dave did you see my one

[S2_Dave]

That's a J (in there somewhere amongst all those expensive fixing) isn't it?

What sort of boost do you think you'll be pushing to hit 600bhp?

[terrybullwon]

That's a J (in there somewhere amongst all those expensive fixing) isn't it?

What sort of boost do you think you'll be pushing to hit 600bhp?

Depends on what cams i am going to use i think, today i got a email sugesting that my turbo with 2.2bar and these cams will make 700bhp

But i know tom had around 2.7 iirc so maybe some where there abouts

[UrS4boy]

Does anybody know what the OEM p/n is for the 034 Race N75 valve? Or if it really is an aftermarket N75 valve, where one could be sourced from within Europe? I might want one quickly. I'm sure it's already been on the forum, but I can't find it .

You might want to read this article:

http://forums.audiworld.com/s4s6/msgs/49283.phtml

If you check in ETKA ("Kate, the little red head girl") she will tell you that:

034 906 283 J = stock 3B (in 200 20v and S2)
034 906 283 H = stock AAN (UrS4 and UrS6)
034 906 283 K = S2 ABY and RS2 ADU

Reference ACOQ, 1989, MG 1, SG 33, Illustration 133-69, etc.

My guess is the "race" N75 = the K valve.

[S2_Dave]

I've already read that article and it was an informative read, but thanks for the link anyway .

There's other threads that suggest maybe "race" is just the K variant too, but nothing firm. I reckon I'll go with K if I have to and just see what happens.

[S2_Dave]

Oh, thanks for the full p/n!

[S2central.net]

'Race Valve' = Snake Oil

[Rusty]

OEM style N75 "race" valve, this is the fastest reacting valve with the higest boost capacity of the N75 valves we've tested. Also works well for universal application boost control like with our new Stage I and IIc ECU's. Also known as the "H" valve.

Based on the fact that the description mentions "H" I would take the logical step that it might be the "034 906 283 H" part number

[Donker]

I thought I'd be clever and try the H valve on my 3b. Turns out the valve has the socket for the cable the other way around as opposed to the old one I had, thus forcing me to put the connector very close to the manifold shield. Can't be a good thing.

[S2_Dave]

I've gone for "K" and will probably see it as a consumable item to be changed with oil.