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03-24-2014, 12:43 PM | #1 | |
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All DISA N52s - Future Issue
Problem:
It looks like BMW didn't really learn their lesson from the DISA failures of the M54. I've seen this rumored elsewhere, but this is pretty definitive proof. Quote:
Solution: Short term, anyone running a DISA unit from '06-'07( can just replace the unit. Safest bet would be something in the neighborhood of 6 year intervals, but frankly, I think this solution is expensive and has the nagging issue of not actually fixing the problem. It should also be noted, this design was never improved by BMW during the course of the N52. I just picked 06'-'07 as they are the oldest and most likely to fail first. Long term, I want German Auto Solutions(G.A.S.) to make use the same DISA upgrade lockdown kit that they make for the M54 DISA unit. It is a solid metal flap that will not degrade over time like the stock plastic unit, which will prevent it from going into the engine. I'm not aware of anyone having a failure after upgrading to that unit. To that end, it would be great if everyone would fire them an email using their contact page to express interest in having a part made: http://www.germanautosolutions.com/contact.php I doubt we are all going to get as lucky as the guy I quoted did. This is a very serious problem that can cause complete engine failure. Lets be proactive about it.
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03-24-2014, 01:32 PM | #3 |
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Will pretty much depend on the mileage on the car combined with the age and way of driving. I've seen BMW's with DISA running 200.000 kilometers or 125.000 miles without issues.
However, better safe than sorry. Preventing this could save tons of money. Good info stig!
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03-24-2014, 01:45 PM | #4 | ||
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Quote:
Either way, I'm interested in getting GAS to make a solution for us, not replacing the units with new ones that will eventually fail as well. Quote:
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03-24-2014, 02:41 PM | #5 |
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Definitely in for a sturdy replacement if the subsequent failure is a blown engine. What was the failure rate on the M54 like?
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03-24-2014, 02:49 PM | #6 | |
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Quote:
It is largely regarded as a non-issue now though thanks to the GAS kit, which is why I strongly want them to develope a kit for our cars. Especially seeing that many members are swapping manifolds from MY '06/'07 cars onto later production N52s. Would be a great time to lock it down while the manifold is already off.
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03-25-2014, 03:12 AM | #7 |
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I'm selling this pos screw it. My other car was reliable and was faster, and was still very nice inside!
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03-25-2014, 06:33 AM | #8 | |
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On a serious note, all cars have issues. The difference is whether to you know what they are or not. I'm all about planning ahead to avoid expensive problems. |
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03-25-2014, 01:07 PM | #9 | |
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I'm not losing any sleep over this anytime soon. |
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03-25-2014, 01:16 PM | #10 |
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+1. It doesn't seem widespread and St|g is doing good work informing us of these potential issues. I would rather know and have the option of taking preventative measures. I'm assuming this problem exists in the DISA in N51 cars?
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03-25-2014, 01:22 PM | #11 |
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Oh yay. Thanks for the PSA.
When I swapped manifolds I wiggled the DISA to check if it was stable. Should be good for abit
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03-25-2014, 01:25 PM | #12 | |
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Yes, should impact both equally.
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03-25-2014, 01:25 PM | #13 |
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As an update, German Auto Solutions is currently looking into it and purchased the DISA adjusters for upgrade evaluation.
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03-25-2014, 04:56 PM | #14 |
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You're right! Haha I just got frustrated for a moment there! On a serious note. Are you guys talking about the disa valve in the manifold swap? So the stock us spec n52 in the e82 don't have the valve issues in the stock manifold?
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03-25-2014, 04:57 PM | #15 |
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Yup, the valve/flap that broke off is the DISA actuator flap that controls the air flow that optimizes power. Stock manifolds on US spec 128i's won't have this issue.
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03-25-2014, 08:19 PM | #16 |
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Adding more moving parts that have a potential to break or break apart is inviting expensive problems. The beauty of the naturally aspirated six was its smoothness, sound, & reliability. Over time the addition of secondary systems adds weight and in long term decreases reliability.
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03-26-2014, 05:59 AM | #17 | |
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Quote:
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03-26-2014, 10:00 AM | #19 |
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03-26-2014, 10:14 AM | #20 | |
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Quote:
I just meant to get an engine that was not offered with it.
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03-26-2014, 10:41 AM | #21 |
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Generally agree, I bought one.
But engine reliability, particularly auxiliary systems, seems to be the one place where the Japanese thrash BMW. I'm baffled why BMW fails to fix known issues, like water pumps and VANOS bolts, for years. Now this. It took them quite a while on the HPFP. The Japanese may have problems, but they are all over them. Does BMW not understand basic principles of quality improvement? I'm really glad to have a CPO, with a total of six years of warranty on this kind of stuff. Hopefully, any weak/poorly installed parts will fail before then. |
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03-26-2014, 10:52 AM | #22 |
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