02-14-2017, 07:41 AM | #89 | |
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02-14-2017, 08:44 AM | #91 | |
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02-14-2017, 09:33 AM | #92 |
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Just because it is of "closed deck design" does not mean it is a "closed deck block".
WOW, lol, well played BMW marketing and legal team! |
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02-14-2017, 09:42 AM | #93 |
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I notice that there is a heavy bias of opinion... those with an M2 seem to be much more likely to be in the N55B30T0 is closed deck, while those without an M2 seem much more likely to be in the open deck camp.
I am of the IDGAF camp. If I do tune my M2, it won't likely be to much more than 400hp, which I am pretty confident the N55B30T0 can take whatever the deck. Can we agree that there is nothing else to say until someone has a photo of the N55B30T0 with the top off? All the stock photos or CAD images of the "N55" don't mean much. |
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02-14-2017, 09:45 AM | #94 | |
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02-14-2017, 09:54 AM | #95 | |
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///M is art ↔ Artemis
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02-14-2017, 10:21 AM | #96 | |
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02-14-2017, 10:25 AM | #97 | ||
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The marketing materials all said Michelin SS as well as M mirrors are an M car feature. I believe they also said twin turbo instead of " Twin power turbo" ( which actually means single turbo ). Why don't you try and sue over the tires or how you didn't get M mirrors first and see how that goes. |
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02-14-2017, 10:28 AM | #98 |
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02-14-2017, 10:35 AM | #100 | |
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Artemis, I wasn't judging you. I just thought it was hilarious that everyone was still having the debate while the front page says it's solved. I know you didn't make the front page title. |
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02-14-2017, 11:09 AM | #101 |
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That's exactly how I understood your message as soon as I read it + I agreed with the point you had made. That's also why I quoted it.
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02-14-2017, 11:58 AM | #103 | |
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The S55B30T0 engine (M3/M4) and B58 engine (M140i, M240i, 340i, 440i and 740i/Li + future) both have a 'closed deck' design and feature LDS-coated aluminium cylinder liners. LDS (Lichtbogendrahtspritzen = twin wire arc spray process) permits a thinner/lighter cylinder wall (small when compared to the typical iron sleeve). The decreased thickness allows for greater thermal transfer and consistency, all while allowing extra cooling channels (part of the water jacket) between cylinder bores so the engine can be tuned "hotter" since the cooling properties are greater. The M2 and X4 M40i engine both share the N55B30T0 engine. That engine does not sport LDS-coated aluminium cylinder liners, but features moulder cylinder liners made from cast iron. Pistons were adopted from the S55B30T0 engine (M3/M4). Adaptations were necessary on the first piston ring, the plain rectangular compression ring. This had to be adapted as regards the material pairing to a liner made of grey cast iron. As pointed out in post #1 of this thread, back in October 2015, 'closed deck' was mentioned in several M2 marketing materials, but in the course of February 2016, the 'closed deck' reference was removed from some (but apparently not all) M2 marketing materials. So what did/do the X4 M40i marketing materials say ? Well, same story: back in October 2015 'closed deck' was mentioned, but in the course of February 2016 removal of the 'closed deck' reference from some (but apparently not all) X4 M40i marketing materials.
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02-14-2017, 12:48 PM | #104 |
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she’s home! '22 M4 Comp xDrive
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02-14-2017, 12:52 PM | #105 | |
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02-14-2017, 01:31 PM | #106 | |||
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02-14-2017, 01:46 PM | #107 |
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02-14-2017, 02:14 PM | #108 |
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So I thought ordering a M2 head gasket might end the drama but instead it looks like it might add fuel to the fire
According to the cross reference the M2 and M4 are different parts but they sure look the same. So maybe the S55 is an open-deck 2' F87 M2 M2 Cylinder Head Attached Parts http://www.realoem.com/bmw/enUS/show...diagId=11_4450 4' F82 M4 M4 GTS Cylinder Head Attached Parts http://www.realoem.com/bmw/enUS/show...diagId=11_5591 2' F22 M240i Cylinder Head/Mounting parts http://www.realoem.com/bmw/enUS/show...diagId=11_6448 Though in the end looks like it doesn't prove anything one way or another Last edited by omasou; 02-14-2017 at 02:25 PM.. |
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02-14-2017, 02:38 PM | #110 |
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