03-30-2019, 11:57 PM | #89 | |
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Regular ewg turbo cannot hold or run 17+ psi to redline like the M2 turbo can on pump fuel. The m2 turbo is more efficient, plenty of logs out there showing this. It’s not a huge difference but it’s there. There is a reason why we have regular ewg maps and m2 specific maps from the likes of bm3 and mhd. Hybrid turbo vendors wouldn’t differentiate between a regular n55 ewg turbo and a m2 ewg turbo for core exchange. |
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ZeroEmissionZ17.50 |
03-31-2019, 12:00 AM | #90 | ||
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03-31-2019, 12:42 AM | #91 | |
Luxury at the redline :)
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Just for my own curiosity, you have anything you could link with more information on these enhancements because this is all news to me and I've been through the official technical training manual from front to back. |
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ZeroEmissionZ17.50 |
03-31-2019, 01:09 AM | #92 | |
Luxury at the redline :)
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Just because the same turbo is used the in M2 today, doesn't mean it wasn't once housed to the 335. This has been debated ad nauseam and confirmed before, as in the thread I linked before. For example, the part number you linked for the 235i turbo is also used in the X4 35i, which has the identical motor to the M2 (S55 pistons). Two different power outputs, same turbo. Also, all the N55 turbos are priced the same; if there was some sort of enhancement between each snail, wouldn't one assume the price would vary to reflect this difference. Not exact science but a little food for thought. . |
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ZeroEmissionZ17.50 |
03-31-2019, 02:19 AM | #93 | |
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I have access to a M135i , unfortunately not 235i or x40i. will it do ? |
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03-31-2019, 03:54 AM | #95 | |
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If you have time look over some logs comparing the 2 cars. You’ll see the difference in wgdc up top for a given boost/load level showing the difference in efficiency. This can also be seen on hybrid turbo cars where the M2 needs less boost to hit a given whp level compared to the other n55 iterations. |
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Poochie9107.50 |
03-31-2019, 06:58 PM | #96 |
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Have you though about affects on re-sale value of putting in a non-M2 block? I would have thought any $ savings on the re-build will be easily lost & then some when you eventually decide to sell.
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03-31-2019, 08:34 PM | #97 | |
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The biggest differences between the M2 and M235 N55s are the pistons, crank bearings, and that the M2 has a better oil pan, baffling, oil pump, and oil squirters. The M235 and M2 share the same forged crank, block, and S55 rods and rod bearings. |
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sea_m2c82.00 |
03-31-2019, 09:06 PM | #98 | |
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Also m235i and m2 doesn't use S55 rods and crank according to realoem. M2 and M235i both use the same N55 rods and crank. There is no block part number on realoem so I can't say if n55 and s55 have same block or not. I would assume they are different as the s55 is closed deck and n55 is open deck. M2 uses s55 rod bearings, on one crank (rear?) bearing from m235i and one (front?) from s55. I don't know which is front and which is rear, just that they are different. M235i doesn't uses any of that the same as s55. I guess I missed all of that when I created my differences list earlier. But, as discussed earlier, I guess realoem can be wrong. So take that however you want. I don't know what to make of it, myself. Last edited by Anthony1s; 03-31-2019 at 09:16 PM.. |
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04-03-2019, 05:43 PM | #100 | |
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You need to find someone who would know if this swap can be done reletivly painlessly or not, like find someone who has done swapped one N55 for another. Someone must have done something on a 335i or something? If not or you can't find out, then as painful as it is, just get rid of that car and move on with your life. |
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04-03-2019, 08:59 PM | #101 |
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Turbo is the same, manifold is different. Its been discussed and even measured.
For what it's worth, which is what I mentioned on another thread that OP started on this problem, most of the stuff can be easily swapped to an M135/M235 N55B30O0 engine other than the S55 piston heads/rings that the M2 N55B30T0 gets. You would essentially have an M235iR engine at that point which have shown to be very durable in long term tracking scenarios.
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04-03-2019, 11:47 PM | #102 | |
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Confused a little here, so if the S55 stuff cant be swapped, does this also mean that the n55 stock motor (m135i example) internals cant be put into an M2 block ???? Last edited by ZeroEmissionZ; 04-04-2019 at 03:36 AM.. |
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04-04-2019, 06:45 AM | #103 |
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thank you for this, would it be possible to add the n54 versions to this list as well been looking for info on the n54 versions everywhere.
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04-04-2019, 07:52 AM | #104 | |
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'14 F20 M135i EWG FBO:// INJEN INTAKE // PURE INLET// TURBOSMART BOV DUAL PORT // //CSF INTERCOOLER // ER CP // SNOW S2.5 METH KIT // B58TU HPFP // NGK 97506 // ER DP // TMSS MID PIPE //MPE // MPBBK // UR STRUT BRACE // BM3 CUSTOM JORDAN E85 TUNE // XHP STAGE 3 // |
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ZeroEmissionZ17.50 |
04-06-2019, 05:04 AM | #105 |
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im not sure if you guys understand what Im asking, would the pistons fit , are they interchangeable ? are the crank, rods, bearings also interchangeable ? "will they fit?"
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04-06-2019, 09:28 AM | #106 | |
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'14 F20 M135i EWG FBO:// INJEN INTAKE // PURE INLET// TURBOSMART BOV DUAL PORT // //CSF INTERCOOLER // ER CP // SNOW S2.5 METH KIT // B58TU HPFP // NGK 97506 // ER DP // TMSS MID PIPE //MPE // MPBBK // UR STRUT BRACE // BM3 CUSTOM JORDAN E85 TUNE // XHP STAGE 3 // |
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ZeroEmissionZ17.50 |
04-06-2019, 10:00 AM | #107 | ||
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Everything is on RealOEM.com and various other free online resources, you can look it up and answer the questions yourself for the most part. Every answer I've given you was from me looking it up, because I like to be helpful. I'm not some magical BMW encyclopedia that knows this off the top of my head. It takes time from me to look up. And seeing as you already bought the m135i engine before doing research to understand what you're getting into, doesn't seem like you learned a lesson from buying the M2 without fully evaluating the risks and possible scenarios that could happen. You could've (and should've) at the very least cross referenced both motors on RealOEM before purchasing it, and looked at ISTA+ (or whatever the name is) that has the M2 repair documentation and procedures in it. To me, it seems like you're being completely careless by not doing so, by tossing your money at things hoping it will work and not get you into an even bigger mess. Which hasn't worked out so far. |
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akkando5869.00 |
04-07-2019, 08:19 AM | #108 | |
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04-07-2019, 04:59 PM | #110 |
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The problem is that the M2 is still relatively new. Also BMW is being a bit shady with the marketing. They tried to convince consumers that the M2 version of the N55 is significantly different than the one used in 235i. Checking part numbers showed that they are closer than they want you to believe.
If I was in your situation I would keep searching for a crashed M2. Get the right engine, part out the rest (you should be able to recover some cost by selling intact airbags, seats, wheels, etc ...) Swapping alternative engines in new models is not easy/cheap. Last edited by mr_lab_rat; 04-09-2019 at 03:47 PM.. |
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