Turbo upgrade options
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1990 B3 2.0 80 quattro.
1992 C4 2.8 Avant quattro
1994 MTM RS2.
1998 B5 TDI quattro Sport.
2000 B5 TQS. -
This is the oil feed from my GT3071, removed due to corrosion of the fittings.
The hex fittings are 9/16 AF (approx 14.3mm)
Female thread minor ID is 0.387” which should make it 4AN.
HTH
John

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Thank you very much!! And the water lines could you tell me too? 0.387" in mm, how much would it be? Excuse me.
Regarding Vidar's turbos, I was evaluating them but due to customs issues, I didn't buy it, I appreciate the offer, I think he's a great professional, it's a shame that he's not closer.Comment
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Doesn’t really matter though, the minor internal diameter inch dimension of the female fitting just tells you what size AN fitting it is.
I don’t know what came with your turbo. You may need the 2 bolt flange to AN adapters..
https://www.speedingparts.co.uk/i/gu...ight-size.html
It’s more than 10 years since I installed my turbo so the info is not fresh in my head but I can maybe get the braided hose OD sizes later if that will help.Last edited by newsh; 18 May 2024, 11:30.Comment
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This will give you an idea of what you need.
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With my turbo came the turbo and the restrictor for the oil, the idea is to make custom hoses, in the case of 034 it does not put diameters or anything, but I wanted to know approximately the diameters of the hoses so as not to put them very narrow and that I did not refrigerate or grease less than necessary. Thank you and best regardsComment
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