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02-23-2009, 05:43 PM | #89 |
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02-23-2009, 06:56 PM | #90 |
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just exactly how would you tune a 128 engine to have 300 hp
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02-23-2009, 07:05 PM | #91 |
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there were a few discussions on the diff between the 190/200kw engines and the 160kw engines. most people seemed to think it was largely due to the differences in the intake manifold and an ecu change? but nothing was ever verified of course...
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02-24-2009, 06:22 AM | #92 | |
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the torque curve on the european n52 is much nicer +35lb.-ft. (235lb.-ft.) from 700-3000rpm the data is all on bmw's site just no verification on how much more performance you can get out of there performance parts Last edited by jbenington86; 02-24-2009 at 06:40 AM.. |
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05-17-2009, 01:30 AM | #94 | |
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Euro N52 speced engines from 2008 on differ in ECU only. Earlier engines (and possibly engines that go to US) had/have difference in intake manifold. I discussed it with BMW serviceman and at least for Euro, with software change 272HP is immediatelly reachable. In US, you should talk with some expert in BMW to confirm that intake manifold is same like on Euro 125i or X3 (I think it is so). Reaching 300HP doesn't require turbo at all in my country, as swaping cat/mid exhaust with straight tube and adding proper silencer do a lot (20 HP at least, more than 30HP on 135i) + intake will do the rest. Such engine is real N52 beast without turbos and touching vital engine parts. For bigger appetites, one should obviously start with 135i. |
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04-15-2010, 06:50 PM | #97 |
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04-16-2010, 03:14 AM | #98 |
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The 125i M Sport is listed on the UK site as 218 hp, while the 128i is listed on the US site as 230 hp. Small difference, but different just the same.
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04-16-2010, 11:19 AM | #99 |
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04-16-2010, 12:16 PM | #100 |
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Wow, you don't see much turbo cars over 100,000 miles? You must be blind then, or a complete fool. Also, what about people that think 280whp is still to slow? What are you gonna do with your "fully tuned" N52? In order for it to reach what I would consider fun it would need an actual build with a very balanced rotating assembly and a reworked valve-train to support 8,000+ rpm. Not to mention at that point putting iron sleeves and turbo-charging it would make it even better anyways. You can drive a turbo car very fast at a track, as long as the turbo is properly sized and you have the appropriate rubber to maintain traction in WOT conditions. Build two track cars, a 128i, and a 135i, and max them out in every way for racing while keeping their respective induction types (natural vs forced), still retaining the factory frame and suspension pickup points, and I bet the 135i will win every time, drag or track. They will basically be the same but with the 135i accelerating much quicker.
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04-16-2010, 01:50 PM | #101 |
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Call me skeptical, but I can't figure out why BMW would market the exact same car as the 125i in the UK, South Africa, and Australia and as the 128i in North America. The 0-60 times given are different (6.4s vs. 6.1s) and in both cases horsepower is listed as hp, not bhp. I'm not saying you're wrong - just that I'm not yet convinced. Got any more info on this?
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04-18-2010, 01:53 PM | #102 |
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04-18-2010, 07:17 PM | #104 |
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why wake up this thread after 1 year ? It is pointless. I'd love to get that 40 hp, but not happening. Just relax and save for a cayman s.
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06-09-2010, 12:59 PM | #105 | |
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The technology that goes into the N52 is fantastic. It is very impressive. Although I read the entire article and am truly impressed with the engine, the article does point out all the weight savings, power gains, friction gains etc... yet the engine only puts out 240 HP? If I were to read that article not knowing the power output of the N52, I would guess just by reading that is makes 300 HP at least. The honda K20 makes 200 HP from a 2 liter, why cant the N52 with far superior technology than the K20 make 300 HP from a 3 liter, inline 6 mind you, a better balanced engine than an inline 4. I just don't get it. Either detuned from the factory, or something isn't right.
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06-09-2010, 03:28 PM | #106 | |
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06-09-2010, 04:07 PM | #107 |
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I wouldnt mind something like either, I was just stating why arent they at that point now with all the crazy sophisticated lightweight engine technology BMW is using in the N52. I was using the K20Z3 engine as a comparison.
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06-30-2010, 04:25 AM | #109 |
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Has anyone toyed with the idea of a twin charger(1 turbo and 1 super charger) like the VW? I would love that.
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08-16-2010, 10:46 AM | #110 | |
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Cover the basics first;turbo kit (gt30r or gt35r), exhaust and a standalone ECU. Twin turbo's are possible, and you would use two smaller turbos to achieve a faster spool up, but that could prove to be a pain through corners, and you've just vastly increased your cost. Lightweight rods and pistons, stage 2 or 3 cams, titanium valves and retainers, upgraded springs and a lightweight flywheel and a stronger clutch would be your next step. This is all assuming that you are upgrading the tires, brakes, chassis and suspension to handle the increase in power appropriately. This engine has top end power in mind, something that a single larger turbo works very well with. Also, considering that this engine could be modified to support 9k+ RPM, a large turbo will really be able to shine as you'll be shifting into turbo with each gear on the straights. 300whp Supercharged 128i, it will be fast, but don't expect to be able to use all the power it gives down low. |
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