Question about S2 Intake Tracts

[((A.V.))mk-1]

Greatings,

I have a bit of a situation, and would like some input. for my CQ -> S2 build I am using a 3b cross member, with ABY intercooler. I ordered the 3b kit from a stateside supplier. to find neither the turbo to IC inlet nor the cross member to inlet tube fit. I sent back the kit, and did some more research.

The stateside supplier sent me the following photo of the difference between their S2 3b and ABY kit. and somthing looks a miss... I cannot understand why the ABY kit (top) has two holes for what looks like a diverter valve.



Additionally, the bottom two silicone hoses are meant to fit a 3b, there is no way this can be correct as the 3b cross member curves upward, making that s curved pipe no where near fitting. You can see that the curved "S" pipe clearly belongs to the ABY s2 kit as shown here in the roose motorsports stock photo for ABY S2.

http://roosemotorsport.co.uk/index.php?main_page=index&cPath=1_59_84

Let me know what you think, if I am crazy, or just confused...

I beleive Roose Motorsports has what I need, although the pound being superior to the USD in exchange I would like to make damn sure before ordering.


Thanks for the support,

Josh C.

[UrS4boy]

B3 S2 3B intake tract vs C3 200 20VT 3B intake tract

Did you make sure that you are talking S2 3B and not 200 20VT 3B? Different chassis (B3 vs C3) so hoses can/will be different.

3B (and ABY and ADU):



200 20VT 3B:

[((A.V.))mk-1]

Thanks for the photos, I was clear I was not talking about that. As that is the reason this all started, I have a michilian man hose from a 200 20vt, which is too short to work for the 3b/s2 application. I wonder why that top schematic says aby/3b when the cross members are clearly differnt between the two.

aby is top/ 3b is bottom (both s2 application.




As an aside... what is item 25 in the top diagram?

[UrS4boy]

As an aside... what is item 25 in the top diagram?

I put those diagrams together for ths sole purpose of discussing boost leak testing. They are not meant to be 100% accurate.

One of the Item 25s shows here:

[((A.V.))mk-1]

Gotcha. Are the 200vt and s2 3b turbo inlets vastly different? Just trying to eliminate variables here...

[UrS4boy]

Gotcha. Are the 200vt and s2 3b turbo inlets vastly different? Just trying to eliminate variables here...

They should be the same. They both used the K24-7000 turbos, also used on the AAN and ABYs.

200 20VT Michelin Man "pressure hose" (item 19 the 2nd diagram) = 035145720A (also used on the KH, NC, etc. 10V turbo engines and the S2 3B.

Item 15 Michelin Man pressure hose in the first diagram = 035145720A (same as the 3B 200 20VT as above)

Note: ABY equivalent is 034145746AL (RS2 is 034145746BB)

Item 25 in the first diagram is PN 034145683G = pressure pipe. Exclusive to the S2 3B

Druckrohr: https://trshop.audi.de/konakart/Sele...UBE&model=0001

[((A.V.))mk-1]

Ok, this is making sense now, as I can see how the michilan hose would fit my s2 3b with the addition of the pressure pipe. Thank you very much for all the help. I still have no idea how the hoses this state side supplier can constitute as a kit. There still has to be some confusion somewhere.

[((A.V.))mk-1]

As this is what it is supposed to emulate, as you can see it's nowhere near.

[UrS4boy]

Not to flog a dead horse but I still don't know if the 3B you are using is from a 200 20VT available in the US in 1991 or an imported S2 3B from Europe.

The reason I bring this up again is while we have established that the two Michelin Man pressure hoses are the same in the two applications, we have not discussed the piping *AFTER* the Michelin Man, between the Michelin Man and the throttle body.

If you look at the two diagrams again, you will see that for the S2 3B you need items 16, 26 and 25. For the 200 20VT 3B, those three parts are replaced by a single part, Item 20 in the 200 20VT 3B diagram. That *could* be your issue.

Here is an RR (like a 3B) in a late run quattro coupe (say 1991) showing the long style intake pipe:

[((A.V.))mk-1]

Thanks for asking, I am using a 200vt 3b. I believe that is my issue. There fore, to remedy this I should buy the "Pressure Pipe" and coupler so I can run the michilan man hose. This still doesnt explain why in the world they offer two hoses that have diverter valve accepting pieces in a single kit.

I can see how the long style intake tube you have pictured there would allow me to run the michilan man hose as well. So as I see it I have two options...

1) buy the "pressure pipe" and coupler and run my OE MM hose
2) source a long pipe and rune my OE MM hose.

Either way, nothing in the kit they sent will do me any good for my application.

Please correct me if you see a mistake in my logic. It is pretty obvious by now you have a great deal more experience than me.

[UrS4boy]

Thanks for asking, I am using a 200vt 3b. I believe that is my issue. There fore, to remedy this I should buy the "Pressure Pipe" and coupler so I can run the michilan man hose.

Okay. You have a 3B from a 1991 200 20VT. Makes sense if you are in the US since the US did not get any S2 3Bs (or any S2s for that matter). That said, I am confused why you don't already have the longer Item 20 Micheline Man-to-throttle body (area) pipe (in the middle of this diagram):

[UrS4boy]

Interesting diagram showing the longer 034145683D 200 20VT pressure pipe (Item 37 in this diagram):

[((A.V.))mk-1]

URS4, Thanks for all your help on this. I ended up returning the silicone kit. and building fabricating my own "Pressure Pipe" PN 034145683G. So that I can run the 200vt MM hose.

Thanks again!

[UrS4boy]

URS4, Thanks for all your help on this. I ended up returning the silicone kit. and building fabricating my own "Pressure Pipe" PN 034145683G. So that I can run the 200vt MM hose. Thanks again!

No problem. I try to help where I can, using the resources that I have access to or created. Good luck with your project.