06-22-2018, 11:46 AM | #1 |
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n20/26 Timing chain Tensioner upgrade
Would Replacing to old timing chain tension the updated one prevent the timing chain problems on the pre 14s before they start?
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06-22-2018, 03:36 PM | #3 |
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If I were going that deep... I would DEFINITELY change the guides as well and most likely the chain too.
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06-22-2018, 03:36 PM | #4 |
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Probably, but as long as you catch it before your engine grenades, you're better off waiting until it's necessary and upgrading to new ones at that point. The issue is still fairly rare, and it's not too terribly likely you'll be affected.
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06-22-2018, 04:10 PM | #5 |
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06-22-2018, 06:26 PM | #6 |
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Interesting...
Appreciate the heads up. I say this loosely but "usually" the tensioner is located behind the timing cover. This is my first German car and all of my prior experience is with GM/Cadillac products, specifically the 3.6L global V6 that is also known to have chains stretch/guides break. Luckily, that engine is non interference so catastrophic damage is unlikely to occur (unlike the N20/N26). Considering the tensioners on our vehicles is easily replaced and cheap (~$60)... do you think it is a good preventative measure for those of us driving vehicles with the "older components" that are more prone to failure? Last edited by sspade; 06-22-2018 at 09:34 PM.. |
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06-23-2018, 08:36 AM | #8 |
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Is it something that can be done in the garage? I was under the impression a timing chain (tensioners too) job was a fairly involved process.
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06-23-2018, 08:58 AM | #9 |
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Replacing just the tensioner is a fairly easy job.
https://www.newtis.info/tisv2/a/en/f...shaft/HtiBPV3K |
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06-23-2018, 09:11 AM | #10 | |
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06-25-2018, 08:57 AM | #11 |
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The issue isn't so much of a tensioner issuer as it is the guide itself. The guide is made of a faulty material that degrades much quicker than expected. I'm at 89k with no issues on my 2013. Biggest solution to this is coding out auto stop/start.
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06-25-2018, 09:01 AM | #12 |
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Have fun with that install haha. Definitely doable but would take a day or two depending on experience: https://www.newtis.info/tisv2/a/en/f...shaft/HipcnQuO
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06-25-2018, 10:43 AM | #13 |
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Maybe, maybe not. Which broke first, the chain or the guide? The characteristic whine that presages the failure of the chain indicates that it's likely the chain that breaks first, taking the guide out when it does. What's in question in this thread is whether a bad chain tensioner might be the cause of the chain failure, and whether changing the tensioner might prevent that. If BMW knows they're not saying, but they did change the tensioner, didn't they?
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06-25-2018, 10:51 AM | #14 | |
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06-25-2018, 11:56 AM | #15 | ||
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06-25-2018, 12:01 PM | #16 | |
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06-25-2018, 12:33 PM | #17 |
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On the reverse side of the coin, the guides rarely break on the GM 3.6L I spoke of above. The chains literally stretch and jump timing. This motor is in just about all GM vehicles and product lines currently, no exaggeration. They have also "corrected the issue" like BMW on newer models. Luckily, the valves do not smash into the piston and destroy the engine (non interference).
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06-25-2018, 01:11 PM | #18 | |
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Article regarding the lawsuit against BMW that mentions the material used: https://www.carcomplaints.com/news/2...g-chains.shtml It's also evident based on a design AND material change in the most up to date timing chain guide. It sounds like multiple issues in the system and the AS/S is a huge catalyst for it.
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06-30-2018, 01:03 PM | #19 |
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Nice 89k miles already.....not bad....I will be keeping mine around 150k - 200k or longer of the interior and exterior is not bang up or look old or outdated....if you know what I mean😁
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06-30-2018, 01:09 PM | #20 | |
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I owe about $5k more this car than its worth. Im not ashamed to admit it, consider myself a realist even if it hurts a little Ive taken a bath on a car before. Not worth it unless you are truly loaded. Pick a car and enjoy the shit out of it. Like you said, as long as the body is ultra clean and you've taken care of the interior... should still be a sweet ride for years to come. |
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06-30-2018, 02:35 PM | #21 | |
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06-30-2018, 06:57 PM | #22 | |
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