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I can mesure later evening when i get home, i have one spare.
1990 2.2 20VT Audi Coupe Quattro
*Hx35/k26, MaxxECU, Wagner EM/IC *RS2 Recaro *4pot-Brembo *3" turboback *Treser *Koni/H&R
1990 Audi 200 20v Avant 2.2 20VT *7 Seater *Full electric gizmos
Don't worry you dont have to sell your wife.
Anyways pictures go 5 first are modded rs2 dp and then 3 pictures are aby dp.
For what is worth i didnt do "IT" to rs2 dp other than v-band it.
Inner dimensions from center are defo bigger on rs2, but i thought best is not to cut it up yet.
If you want i can sell you that rs2 downpipe.
1990 2.2 20VT Audi Coupe Quattro
*Hx35/k26, MaxxECU, Wagner EM/IC *RS2 Recaro *4pot-Brembo *3" turboback *Treser *Koni/H&R
1990 Audi 200 20v Avant 2.2 20VT *7 Seater *Full electric gizmos
Can you confirm that RS2 downpipe inner diameter at turbo flange is 58 mm , whereas AAN downpipe inner diameter at turbo flange is 56 mm? I am asking as i do intend to use the cast flange of the downpipe from my AAN while changing size of downpipe for a couple of reasons - it takes away heat from turbo , and being the same material as the hotside , expands equally as the housing so no loose nuts every 1000 km. And I am not after the last HP from the RS2 setup anyway.
From the info I have been given and the part number on the cast section (857 253 171 D) that part number appears only to be that of the top cast section. ABY and RS2 have the same numbers from what I have seen.
The complete DP ABY and RS2 have different numbers. All the same cast section diameters.
The change takes place after the end of the cast section.
I have not proved this 100% I am 99.9% sure of what I am saying and I will in the future be able to confirm my findings.
The cast flange section is defo the same from aby to rs2, measuring at 56.5 mm when I swapped downpipes. I remember this as it's same diameter as my turbine wheel exducer. Obviously there will be a tolerance and a bit of carbon deposit to take into account.
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