05-21-2019, 09:34 PM | #397 | |
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Did they fix it? i had the same on the 335i M Performance and google revealed a known rattle problem in 2014. A PUMA case indicated an HVAC tube loosening and banging under acceleration. i had to play a recording but they agreed to open it and found it. No issue with the proper repair in place. Obviously, the Canadian service center had never heard of the issue until i quoted them the PUMA case number. |
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05-21-2019, 09:55 PM | #398 | |
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05-21-2019, 10:34 PM | #399 |
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Toyota Supra is rated for 335hp, (crank vs wheel is still low) a shockingly low figure. Head Supra engineer told Doug DeMuro that more left for tuning. Given the lengthy post entries here, makes sense why Toyota did not even match the Z4. Toyota cannot design a 6 cylinder for squat, but could probably tell that it may have some issues under load.
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05-22-2019, 03:55 AM | #400 | |
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05-22-2019, 06:41 AM | #401 | |
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The rest though, yeah, I could see them selling a TRD kit to unlock some of that HP.... but the new M340i has nearly the same power as the Z4, and there's traditionally been MPPKs on the BMW side, so there may yet be another 30 HP in there already... imagine a Z4 or M340i making over 400 with full warranty? |
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05-22-2019, 07:35 AM | #402 | |
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a rare occurence with BMW, N55 never had such issues but, then again, it did not jump hp/torque as much as B58 dared do. Tells me Munich rushed to catch up to Merc and Audi while also catching up with their unreliability. the hardest think to do, engineering wise, is to increase both power and reliability, and nearly impossibly to do so while maintaining cost. 40 Hp is over 10 percent increase vs the N55. Seen in West Africa million km e3x naturally aspirated classics. The band and timing ensured that clutch could break first but rarely, if ever the engine. On these new engines a lot can fail fast before the AT or MT fails. BMW be ashamed to ever attempt catching up with Merc. The AMG reliability problems under load, even on the S class, is horrendous. Its as if BMW designed the B58 thinking "we got to catch up Mb in sales, lets give numbers, not even 1 percent of owners will tap 90 percent power, therefore acceptable risk = z ", part by part. Life cycle management? z+y+n= expected longevity. sure enough, they are moving to racing grade forged pistons with the TU1. The cost of warranty B58 must be higher than the program managers anticipated. i would rather have a reliable N55 than an over booosted one, esp the B58. Been watching these engine issues grow, and shop head techs quietly confirmed them as well in Canada. why it matters? because 6 months it is too cold to even try Sports+, except in British Columbia. The cold exposed numerous belt and chain issues, and cylinder as well (contraction too high). -30, -40C exposed this.. anything but 0W40 Liqui or Shell or Motul virtually guarantees a short engine life vs the prev gens. You get less thermal issues but more friction types. either case TU1, a new engine IMO, addresses the original 360-380 hp hasty design sin... Present'y am waiting for the TU1 for my next car, AND will likely buy the 6-7 year warranty. And will only run 0w40 Motul or Liqui Molly. Last edited by Musashi; 05-22-2019 at 07:57 AM.. |
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05-22-2019, 07:41 AM | #403 | ||
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05-22-2019, 10:24 AM | #405 |
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05-22-2019, 10:48 AM | #406 | |
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05-22-2019, 10:55 AM | #407 |
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05-22-2019, 11:00 AM | #408 | |
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05-22-2019, 04:27 PM | #409 | |
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https://www.autoevolution.com/news/b...ps-129912.html https://www.bmwblog.com/2018/10/31/b...88-horsepower/ these changes tell me that, considering the lengthy recall lists (just 100 recalls = millions $) BMW engineers in Munich scrambled realizing that the common sense worse scenario issues turned out the norm. Shredded turbos, fail chain, fail piston, fail bearings, fail cylinder all = full engine replacement. Each time BMW lovers floored it, they proved the cautionary folks right, and engineers wrong. They got power right, but not life cycle management (hey even Ferrari missed that this year in F1). The idea of reversing the chain and belt location to bring vibration to center of car mass, as well as - stupidly- keep it cleaner, turned out hubris as any troubleshooting now involved hoisting the engine. Solution? redesign that with 30 less moving parts in TU1. as if not enough, thermal issues plagued the engine deck, and even the less powerful N55 got hot enough to warm up overnight my garage at 0 Celsius. Solution? redesign the deck, crankshaft bearings AND pistons and cylinders, metallurgically better alloys, thicker walls in critical punch hole location (is it Honda in F1?) and thermal improvements with smarter cooling per stroke. suddenly, the engine can handle 350 bar... when did they actually do that for the N54 and N55? it has not happened actually. The B58 release coincided with MB swooping by BMW, Audi as well surpassing it in sales, etc. Cause and effect. either case , those that tuned up the B58 rapidly discovered issues that were almost unheard off on the prev gens. Smooth as butter, fast, but piss poor reliable. Hopefully BMW extends warranty to ALL B58 owners, not the least due to stringent EU and German consumer protection laws. But i have a feeling that they will do swaps quietly and they are trying to release the TU1 quietly as to not reveal the original B58 as a 2 year wonder... Last edited by Musashi; 05-22-2019 at 04:36 PM.. |
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05-22-2019, 09:58 PM | #410 | |
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05-23-2019, 05:43 AM | #411 |
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You sure about that? How in the world would they do the timing chain without removing it? I know the dealerships have methods of lowering the engine out the bottom relatively easily, but it still must be removed.. and that makes it much more expensive or just not doable by non-BMW-specialty shops.
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05-23-2019, 10:11 AM | #412 | |
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Why cant auto makers design a chain that actually lasts and doesnt fail! So seems like maybe 2015/2016 N55 might be more reliable vs. 2017/2018/2019 B58? |
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05-23-2019, 02:12 PM | #413 |
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Does anyone actually have some valid service intervals for B58, for example the aforementioned timing chain?
As said a post above, the engine does not need to be removed to service the timing chain. Just a rumor that spread when B58 was announced and the changes unveiled. |
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05-23-2019, 08:33 PM | #414 | |
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05-23-2019, 08:36 PM | #415 | ||
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05-23-2019, 08:39 PM | #416 | |
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This is also still a fairly new engine. This thread might be more meaningful in 3 years. |
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05-23-2019, 08:47 PM | #417 | ||
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05-23-2019, 08:48 PM | #418 | |||
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