The Eaton TVS1320 blower's nose bearing wears and its front seal weeps oil straight into your intake. We rebuild the snout — bearing and seal — at your home, for a fraction of what a replacement supercharger costs.
The Eaton TVS1320 supercharger on the 2012–2017 3.0T spins at enormous speed, and all of that load runs through the nose-drive bearing at the front of the unit. Over years and kilometres that bearing wears, and you hear it: the supercharger's familiar whine changes pitch, gets coarser, or varies with load in a way it never used to. With the belt off, the wear is literally hand-detectable — play in the pulley that shouldn't exist.
The front seal lives right behind that bearing, and as the bearing develops play, the seal starts weeping the supercharger's internal oil — directly into your intake tract. The engine burns it, which is the oil smell and the increasingly rough idle. The blower is also slowly losing the very oil that lubricates its internals, so the problem feeds itself.
Dealers typically quote a complete supercharger for this, because they don't rebuild — they replace. But the failure is in the snout: bearing and seal. A proper rebuild with quality bearings and a new seal restores the unit completely, the whine returns to its normal note, and the rest of the supercharger — rotors, housing — carries on, because nothing was wrong with it in the first place.
If your Audi is doing any of these, this is the likely cause:
A worn nose bearing only loosens, and the seal behind it only leaks more. Let it go far enough and the bearing can fail outright — at which point you're shopping for a complete supercharger, the exact outcome a snout rebuild exists to prevent. Meanwhile the engine is steadily ingesting blower oil, fouling the intake and adding to carbon buildup. The pitch change is the early warning; act on it while it's still a rebuild.
Yes — the blower unbolts from the top of the engine and the rebuild happens on a bench right there: press out the worn bearing, fit the new bearing and seal, refill the nose-drive oil, reinstall. No hoist, no shop machinery beyond what we bring.
Because dealers don't rebuild superchargers — they replace them, and a new TVS1320 plus installation is how quotes reach $3,500–4,500 and beyond. The actual failure is a bearing and a seal in the snout. We quote one flat price for the complete rebuild before starting, and you keep your original blower.
The belt-off test settles it: with the drive belt removed, a worn nose bearing shows detectable play at the pulley, and turning it by hand often feels rough. We confirm that before quoting — if your noise turns out to be an idler or the belt itself, that's a much smaller fix and we'll tell you so.
Only positively. A tight new bearing means the rotors spin true, the new seal stops oil bleeding into your intake, and boost delivery returns to factory behaviour. Nothing about a snout rebuild changes the supercharger's character — it restores it.
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