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01-21-2012, 02:34 PM | #23 | |||
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There is real world empirical data and tear down inspection, your standards are not reasonable and not needed, also no one here is speaking with absolute certainty on anything, but we certainly aren't simply speculating without data to back it up.
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01-21-2012, 02:38 PM | #24 | |
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01-21-2012, 02:50 PM | #26 | |
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As far as stock vs ESS we are comparing 350 units vs tens of thousands and are all the NA cars that failed really stock? Don't know, no one does, but out of tens of thousands of M3's sold, there has been a minimal amount failures vs. the # sold, and some of those failures happened with very little miles.
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16 F82 M4 DCT - ZCP - JB4 - 556WHP / 570WTQ
08 E92 M3 DCT - Bolt Ons - 60-130MPH 10.71s - 11.88 @ 118MPH - 377WHP ESS VT2-625 SC 60-130MPH 6.80s - 11.30 @ 129.3 MPH 586WHP / 379WTQ ESS VT3-750 - 60-130MPH 6.14s - 10.81 @ 135.13 MPH 690WHP/463WTQ Shift-S3ctor E92 M3 - 1/2 Mile Trap Speed WR - 174.13 MPH Last edited by DLSJ5; 01-21-2012 at 03:02 PM.. |
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01-21-2012, 02:58 PM | #27 |
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I've already had an engine die, not fun. But two things we can agree on, there are no certainties, and yes you have a far better chance for reliability and longevity if you leave your car stock.
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16 F82 M4 DCT - ZCP - JB4 - 556WHP / 570WTQ
08 E92 M3 DCT - Bolt Ons - 60-130MPH 10.71s - 11.88 @ 118MPH - 377WHP ESS VT2-625 SC 60-130MPH 6.80s - 11.30 @ 129.3 MPH 586WHP / 379WTQ ESS VT3-750 - 60-130MPH 6.14s - 10.81 @ 135.13 MPH 690WHP/463WTQ Shift-S3ctor E92 M3 - 1/2 Mile Trap Speed WR - 174.13 MPH Last edited by DLSJ5; 01-21-2012 at 03:06 PM.. |
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01-21-2012, 03:16 PM | #28 | |
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Think of it like the lottery not everybody end up with the winning numbers,in this case a bad engine. AA has only one documented case of an engine failure with a strapped AA's sc on,that's not bad. On the other hand what I find troubling about AA,is the fact that they tried to mislead,misinform the forum...I mean if you have nothing to hide,why do that? Last edited by US///M3; 01-21-2012 at 03:33 PM.. |
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01-21-2012, 03:52 PM | #29 | |
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Not sure on the AA thing, haven't been reading it closely enough, it's a tough situation for both parties, from what I have read, it does seem to have plenty of conjecture and knee jerk reactions you can get in those type of threads.
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01-21-2012, 04:13 PM | #31 | |
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When I clicked on the video I was hoping for some facts and figures, like stress loads, bearing clearances, states of lubrication occurring within on the bearings and their method of correcting these issues. The video had no factual or useful information in it at all. Anyone who knows anything at all about engines knows that the video was a joke and didn't reveal anything. And furthermore, if the rod had seized onto the crankshaft the big end would have been extremely discoloured from the heat and it would mot have still been perfectly straight like that. To me it looks like the big end was simply unbolted from the crank after the failure! |
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01-21-2012, 04:16 PM | #32 | |
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If the crank bearings were bad ,wouldn't all of them show excessive and uneven wear? |
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01-21-2012, 04:18 PM | #33 |
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that motor lacked oil with bearings looking like that or at some point lacked oil and was run hard and it was just a matter of time before it let it let go .
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01-21-2012, 04:37 PM | #34 | |
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01-21-2012, 05:26 PM | #35 | |
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Further I find it hard to believe that a car/engine that has been tracked for it's performance and seen track time would not be operated responsible with the very basic eye on oil level and proper warming from cold starts to normal running / performance run exposure. I think this has just been a engine mod gone bad ... for the video presenter to use the term "failures with some of those engines" is just not justifiable and puts the fear into people that are not as experienced about those issues as some of us here have. A further incorrect example is when the video presenter points out the bearing shell sliding radially and axial in the rod bearing retainer. The shell bearings are manufactured with anti-rotation notches at the half joint that lock the bearing shell into the rod bearing retainer. The anti-rotation notch most likely broke off and that is why he could slide the shell radially and axially. In fact when he shows us the same retainer and bearing shell from the opposite bank he could not slide the shell in the same as before since the anti-rotation notch was obviously in tact. Yes indeed the video is a joke since it does not present anything about the failure other then well organized engine parts on a table.
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01-21-2012, 05:34 PM | #36 | ||
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You are right about the engine parts though, they sure were laid out nice |
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