Quote:
Originally Posted by 1SerieStud
Welcome to the waste gate rattle club  The post you read was mine, and your description is dead on as what I experienced. What needs to happen is for the turbos to be removed and the waste gates needs to be re-calibrated. You're the second person to report this (to my knowledge).
Surprisingly this has not been a common issue since the original N54 engines from 2007/2008, but apparently the waste gates on the 1M's turbos are border-line out of spec so after some use they may start rattling.
It's a huge job involving the removal of the entire exhaust, bottom engine mount, and subframe in order for both turbos to come out - they have to be able to touch/rotate the waste gate flap during adjustment plus mount a tool that tests the adjustment by providing vacuum to the waste gates.
It takes them 2-3 days from beginning to end since they are constantly in contact with BMW NA every step of the way.
Here is my thread:
http://www.1addicts.com/forums/showthread.php?t=662661 |
Hmmm, interesting. Any idea why the wastegates are 'borderline out of spec' (is that the BMW tech's speak or are you coining the term?)
Sounds pretty involved work, one definitely wants to be bringing the car fully stock if this ever occurs.
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2011 BMW E82 1///M: AW, all options; Renntech, Akrapovic, Forge, P3, RevoZ CF bits, many mods
1988 BMW E30 M3: Hennarot, S14, stock
2018 Porsche 991.2 GT3: PtS, CXX, LWBS, PCCB
1998 Porsche 993 C4S: Zenith Blue, last aircooled widebody, Bilstein PSS10, Fister II + Fabspeed exhaust
2008 Audi B7 RS 4: Sprint Blue, Audi Exclusive Euro Bucket Interior, Premium+Titanium, many mods