N20 Wastegate rattle :(

mallorca328 · 02-19-2019, 12:05 PM

Is there actually any way to fix it?

sspade · 02-19-2019, 12:10 PM

Post of video/sound clip of what you are referring to, please.

Aldor27 · 02-19-2019, 01:41 PM

pretty sure Ive heard something like wastegate rattle on my n26 228i.

Big.Al · 02-19-2019, 02:50 PM

Same I got waste gate rattle especially when shutting off the car sounds like a fart can

D041987 · 02-19-2019, 03:02 PM

According to BMW they build the turbos to have some wastegate play as soon as engine is off or just turning on (cold). Lot's of owners complained about it and even with a turbo swap, it was good for less than 1K and rattle returned. Now, if you have wastegate play and rattle when you rev the engine after it is fully warmed up than that is an issue. You can always manually adjust the arm a full turn or half a turn in to take the slack out and make the turbo last longer if tight on cash. But you will need a new turbo sooner than later.

sspade · 02-19-2019, 03:20 PM

Quote:

Originally Posted by D041987

According to BMW they build the turbos to have some wastegate play as soon as engine is off or just turning on (cold). Lot's of owners complained about it and even with a turbo swap, it was good for less than 1K and rattle returned. Now, if you have wastegate play and rattle when you rev the engine after it is fully warmed up than that is an issue. You can always manually adjust the arm a full turn or half a turn in to take the slack out and make the turbo last longer if tight on cash. But you will need a new turbo sooner than later.

Why would he need a new turbo and not just a new wastegate assembly.

Please explain.

mallorca328 · 02-20-2019, 02:56 AM

Quote:

Originally Posted by D041987

You can always manually adjust the arm a full turn or half a turn in to take the slack out and make the turbo last longer if tight on cash. But you will need a new turbo sooner than later.

This turbo isnt even one year old.

sspade · 02-20-2019, 07:13 AM

Quote:

Originally Posted by mallorca328

Quote:

Originally Posted by D041987

You can always manually adjust the arm a full turn or half a turn in to take the slack out and make the turbo last longer if tight on cash. But you will need a new turbo sooner than later.

This turbo isnt even one year old.

There is no reason to swap entire Turbo assembly for a waste-gate rattle. You would swap the waste gate first.

Don't believe me everything you read on the internet!

7iM3less · 02-26-2019, 02:26 PM

Quote:

Originally Posted by D041987

According to BMW they build the turbos to have some wastegate play as soon as engine is off or just turning on (cold). Lot's of owners complained about it and even with a turbo swap, it was good for less than 1K and rattle returned. Now, if you have wastegate play and rattle when you rev the engine after it is fully warmed up than that is an issue. You can always manually adjust the arm a full turn or half a turn in to take the slack out and make the turbo last longer if tight on cash. But you will need a new turbo sooner than later.

Pretty sure over-tightening the actuator arm will also call up an engine light from what the dealer told me.

(In my case) the dealer said actuator couldn't be replaced without the entire turbo so they replaced my turbo on warranty.

D041987 · 03-04-2019, 02:44 PM

Quote:

Originally Posted by sspade

Why would he need a new turbo and not just a new wastegate assembly.

Please explain.

The wastegate is not actually rattling it is the flapper that is on the inside of the turbo hot (Downpipe) side that is flapping around. This is due to the machined bushing that the arm sits on and moves back and forth. You are required to press fit that bushing/sleeve out if you want to remove or replace the entire flapper arm which requires a turbo removal! Now you can probably have the turbo refreshed and rebuilt by the shop for around $300-400. But since you already have it all off, might as well upgrade to the MHI or Another turbo.... But your call. Personally I would not go with a OEM replacement. I would get it rebuilt, as the shop will put a bushing and arm that is made of better quality and will probably not rattle like the OEM ones do in a few K. BUT OP is under warranty. Go complain to dealership and get BMWNA involved and have them send their tech down to the dealership and do not pick your car up till your turbo is replaced!

This video explains it better: https://www.bing.com/videos/search?q...0&&FORM=VRDGAR

mallorca328 · 03-16-2019, 06:43 AM

Quote:

Originally Posted by D041987

The wastegate is not actually rattling it is the flapper that is on the inside of the turbo hot (Downpipe) side that is flapping around. This is due to the machined bushing that the arm sits on and moves back and forth. You are required to press fit that bushing/sleeve out if you want to remove or replace the entire flapper arm which requires a turbo removal! Now you can probably have the turbo refreshed and rebuilt by the shop for around $300-400. But since you already have it all off, might as well upgrade to the MHI or Another turbo.... But your call. Personally I would not go with a OEM replacement. I would get it rebuilt, as the shop will put a bushing and arm that is made of better quality and will probably not rattle like the OEM ones do in a few K. BUT OP is under warranty. Go complain to dealership and get BMWNA involved and have them send their tech down to the dealership and do not pick your car up till your turbo is replaced!

This video explains it better: https://www.bing.com/videos/search?q...0&&FORM=VRDGAR

Mine is the electronic, not pneumatic

kobluna · 03-21-2019, 06:05 AM

Quote:

Originally Posted by mallorca328

Mine is the electronic, not pneumatic

Should not matter though. It still got actuator arm and valve itself. I too have electric actuator and got some rattling. But when I try to move the valve axle by hand I feel only very little play in it. So I'm not sure if it's this problem. I would say it's fine and something else is rattling. Do you feel any play on your wastegate axle if trying to move it by hand? Only try with cold engine of course.

RMachuca3d · 08-14-2020, 05:23 PM

Would this be considered excessive play?

sqwinny · 08-16-2020, 12:56 AM

Seems standard to me. Same on my ewg n20. No issues

Skarniqo · 01-02-2023, 08:24 PM

Quote:

Originally Posted by D041987

According to BMW they build the turbos to have some wastegate play as soon as engine is off or just turning on (cold). Lot's of owners complained about it and even with a turbo swap, it was good for less than 1K and rattle returned. Now, if you have wastegate play and rattle when you rev the engine after it is fully warmed up than that is an issue. You can always manually adjust the arm a full turn or half a turn in to take the slack out and make the turbo last longer if tight on cash. But you will need a new turbo sooner than later.

have you done this yourself, i want to tighten it but not sure if itll mess it up

02-19-2019, 12:05 PM	#1
mallorca328 Private First Class 47 Rep 102 Posts Drives: F30 328i Join Date: Aug 2018 Location: Spain iTrader: (0) Garage List 2012 F30 328i [0.00]	N20 Wastegate rattle :( Is there actually any way to fix it?
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02-19-2019, 12:10 PM	#2
sspade Major General 2465 Rep 5,457 Posts Drives: F30 Join Date: Oct 2017 Location: Stevenson, WA iTrader: (3) Garage List 2016 BMW 320i [7.87] 2014 BMW 328i [6.83]	Post of video/sound clip of what you are referring to, please.
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02-19-2019, 01:41 PM	#3
Aldor27 Second Lieutenant 87 Rep 281 Posts Drives: 2016 EB 340i Join Date: Feb 2018 Location: Napa Valley iTrader: (1) Garage List 2016 BMW 340i [0.00]	pretty sure Ive heard something like wastegate rattle on my n26 228i.
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02-19-2019, 02:50 PM	#4
Big.Al Instagram @F82_Al 33 Rep 143 Posts Drives: 2017 F82 M4 Join Date: Nov 2016 Location: Bay Area iTrader: (0)	Same I got waste gate rattle especially when shutting off the car sounds like a fart can __________________ Insta @f82_al
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02-19-2019, 03:02 PM	#5
D041987 Big Turbo Boys N Girls 327 Rep 579 Posts Drives: 2012 328I 6speed Join Date: Apr 2016 Location: Lynnwood, WA iTrader: (0)	According to BMW they build the turbos to have some wastegate play as soon as engine is off or just turning on (cold). Lot's of owners complained about it and even with a turbo swap, it was good for less than 1K and rattle returned. Now, if you have wastegate play and rattle when you rev the engine after it is fully warmed up than that is an issue. You can always manually adjust the arm a full turn or half a turn in to take the slack out and make the turbo last longer if tight on cash. But you will need a new turbo sooner than later. __________________ 2012 F30: G25-660 Bottom Mount Mani+ DP+ Intake, CSF FMIC, VRSF CP, Walbro 450 LPFP, PR Injection with AIC 4, S63TU Injectors, Tuned with BM3, ZF Race 4 Puck and Non SSA Pressure plate, Catless, 3.5" Quad Muffler, Custom Valved Bilstein B8 + H&R SS. Max 456 WHP - 452 WTRQ. Currently tuned down to 434 WHP and 362 WTRQ to save the rods.
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08-14-2020, 05:23 PM	#13
RMachuca3d Captain 724 Rep 943 Posts Drives: F30 328i Msport Join Date: Aug 2018 Location: WA iTrader: (2) Garage List 2015 BMW 328i Mspor ... [0.00]	Would this be considered excessive play?
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08-16-2020, 12:56 AM	#14
sqwinny Major 473 Rep 1,058 Posts Drives: 2013 6MT 328i M Sport Join Date: Mar 2019 Location: Miami iTrader: (3)	Seems standard to me. Same on my ewg n20. No issues __________________ MY13: TTE400 Stage 2 turbo. e80 tune by Navardi Tuned. 380 whp/360 wheel torque stock block
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