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front turbo actuator rod adjustment
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09-17-2013, 09:32 AM | #1 |
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front turbo actuator rod adjustment
Hey guys,
Is it possible to access and adjust the front turbo actuator rod? The rear one is easy to reach, unfortunately, it is the front one that is giving me a rattle issue on deceleration.. I did some research but I can't find any good information. So how would I proceed to access it? from the bottom or the top? what all needs to be removed? I really hope there is a way to do it without taking the turbo off the car... |
09-17-2013, 09:40 AM | #2 | |
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09-17-2013, 11:30 AM | #3 |
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Yes, there is a way to do it. But you have to remove many components for access, and it's about a 6 hour job. JamesM3M5 made a detailed thread about it, and a few of us did it following that thread. It's a serious PITA.
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09-17-2013, 10:19 PM | #5 | |
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or going in from underneath the car, remove downpipes, take the c-clip of the wastegate arm , pop the actuator rod off so i can turn it to adjust it, then replace it on the wastegate arm? |
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09-17-2013, 10:32 PM | #6 |
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In order to effectively adjust the actuators you really need the downpipes off. At that point the rear unit is very easy to adjust. The front unit I'd recommend trying to use washers under the actuator mount at the bolt locations to get the correct adjustment. Accessing the mounting bolts is much easier.
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09-17-2013, 10:58 PM | #7 | |
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Thanks! Last edited by waikiki35; 09-17-2013 at 11:45 PM.. |
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09-18-2013, 08:50 AM | #8 | |
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Rob |
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09-18-2013, 04:44 PM | #9 |
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Thanks for your help man. whenever I get time , I will work on it and repost back on here to let you guys know if this method worked..
I'm still kind of confused when you say from the front... front standing on top of the engine, front laying underneath the car? I just got this car and haven't wrenchend on it yet..( where my confusion comes from) I'll keep y'all posted! |
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09-18-2013, 04:47 PM | #10 | |
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Good luck, Rob |
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09-18-2013, 05:14 PM | #12 |
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http://www.e90post.com/forums/showthread.php?t=715052
I did it on my own car, and we've done it on other 335s as well. Cliff notes: Remove water pump and thermostat, have small 1/4" drive tools and nice 10mm wrench, and Mityvac or other vacuum pump WITH gauge. It can be done without removal of the exhaust/DPs. It is not easy, and it took me about 5 hours start to finish including refilling and bleeding coolant system.
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09-18-2013, 05:53 PM | #13 |
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Hey Rob, or anyone for that matter, what diameter washer will fit the arm? I'll have my car on the lift for a downpipe install Saturday so going prepared will be nice!
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09-18-2013, 07:05 PM | #14 | |
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Rob, Do I just pull on the front intake tube to get it off the turbo and just push it back on there somehow? if so is there any oring or gasket I have to replace? |
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09-18-2013, 07:23 PM | #15 |
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You can definitely adjust the front rod with the turbo on the car, but like others have said, it isn't easy. The best way to make any adjustments is to remove the downpipes so you can accurately see how tight/loose the wastegate flapper is when adjusting. Otherwise, it's kind of a guessing game.
On a side note, the C-clip on the front turbo is a cunt. You CAN get it off, make adjustments to the rod, and put it back on -- but it sucks. It's even worse if you have an '07-early '08 car that has the tiny C-clips. I've lost a few of them myself. I like Rob's washer/shim idea better. You might be able to do that without removing the water pump. The intake tube is in the way, though. Remove that, and I think you might be able to get to the 3 nuts that hold the actuator to it's bracket. Or you could maybe even shim the bracket itself.
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09-18-2013, 07:28 PM | #16 | |
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It's held onto the turbo with a bolt, and there are a few other bolts that secure it to the head. I don't think it's required to replace that seal, but it wouldn't be a bad idea while it's apart.
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09-18-2013, 07:31 PM | #17 | |
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09-18-2013, 07:39 PM | #18 |
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It's really just so you can physically spin the flapper to check for resistance/adjustment. You want it to be snug with some resistance, but you should still be able to spin it with your fingers. If you can't spin it at all by hand, it's too tight. I usually use 9 in. hg of vacuum and adjust as needed with the procedure above.
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09-18-2013, 07:43 PM | #19 | |
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alright got it. thanks for your help man. hopefully i can jack the car up soon and see how i can put all these advices in practice! |
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09-18-2013, 09:41 PM | #20 | |
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09-19-2013, 12:11 AM | #21 |
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09-19-2013, 01:36 PM | #22 | |
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