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07-17-2012, 04:55 PM | #67 | |
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Either way, just turning them down is easier, cheaper, and creates no failure points. And lighter
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07-17-2012, 05:18 PM | #68 | |
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The reason mg was used was to save weight. Not due to similar expansion. Mg is lighter than Al and relatively strong(not as strong as Al). The N52 engine is not suitable for high hp applications. Thats pretty much a known given. The engine was developed using BMW's "Green" program. If it were as strong as the N54/55 units it would have been used in the 135's, 335is and 1M. A M car would certainly sport a lighter weight engine if any. They use N54's because they're stronger. Its that simple. You didnt address my question regarding the 4g plant. Im curious to know what you mean. Whats a Mg piston head? You cant forge Mg. |
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07-17-2012, 05:20 PM | #69 | |
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07-17-2012, 05:22 PM | #70 |
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Yes they are:
5.0 Litre V10 engine, 90 degree bank angle, 507*hp (378*kW) @ 7750rpm/520*N·m (384*lb·ft) torque @ 6100rpm Cast aluminum block with bed plate design split at the crankshaft axis. Cast aluminum heads with four valves per cylinder and CNC machined ports and combustion chambers. Valves are actuated through non-rotating inverted bucked cam followers. Oil-cooled, forged aluminum pistons from Mahle Motorsport
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07-17-2012, 05:24 PM | #71 |
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07-17-2012, 05:26 PM | #72 | |
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... the n54 is Alu/iron
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07-17-2012, 05:33 PM | #73 | |
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http://www.bmw128i.com/specifications/ Much closer to 50/50 distribution? Really, less than 1% is much closer? You're losing credibilty here. You'll also take the 128's brakes? Wow! OK then. |
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07-17-2012, 05:35 PM | #74 |
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07-17-2012, 05:38 PM | #75 |
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07-17-2012, 05:39 PM | #76 | |
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But yes, I think that the 128 brakes relative to the power and weight of the 128 are a superior setup to the 135 brakes, relative to the power and weight of the 135.
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07-17-2012, 05:45 PM | #77 |
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Back on 128i chat topic #2:
Lighter flywheel from JB racing, sold by TC kline racing: http://www.tcklineracing.com/webdocs...Details637.cfm have people had lighter flywheels in other cars??? Did you like it?
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is |
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07-17-2012, 05:46 PM | #78 | ||
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07-17-2012, 05:47 PM | #79 |
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in an alternate universe, maybe the german 1er forums, do you think there is some 135i owner wishing he had a 125i?? I mean 95% of all e82 there come with m-sport bumpers... and he constantly gets comments "Nice 120d" :P
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128i Sport 6MT converted to Euro 130i spec, 3.73 diff, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: //M front arm, M3 rack, e36M lip Wishlist: Coils, n55 mnts, headers, LSD, e60 finn diff "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is |
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07-17-2012, 05:52 PM | #80 |
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coda- If some of you guys wouldnt constantly say the 128 is 'vastly' more reliable than the 135 then I wouldnt be here. But it always has be brought up by one dope in particular. Dont dish it if ya cant take it.
Not to mention all the others that joined in to have their say. Likewise I return the favor. |
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07-17-2012, 06:04 PM | #82 | ||
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07-17-2012, 06:04 PM | #83 |
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Easy, my reply was not directed at you (just an observation in general). I drive a 128 and would prefer this stay on topic. We invite the 135 owners to comment when we make the 'reliability' statement.
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07-17-2012, 06:31 PM | #84 |
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In the two and a half years that I've been on these boards, I've seen literally dozens upon dozens of threads documenting significant reliability issues with the 135i. I don't think I've ever seen a single instance of a 128i breaking down. Now, I'm not saying that every 135i is a ticking time bomb, but that the 128i is generally more reliable than the 135i is not a figment of anyone's imagination. Don't see what the big deal is in saying so.
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07-17-2012, 06:32 PM | #85 | |
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Needs more faces lol |
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07-17-2012, 06:37 PM | #86 | ||
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Diamond shaped as in they taper into the middle The big point here is all the internals (cylinder walls, everything) are made of aluminium.. The mg just WRAPS around it all On the aubject of o2 sims, they don't wearout, theyre a metal tube Not forged, billet cnc'd You'll see whether or not the n52 can take decent power soon enough. There is absolutely NO solid proof of anyone trying and failing yet And i can't find anything on it being a 100% green engine.. Yeah they have all their 'green' tech in it, but it was designed for total performance. Fuel efficieny via light weight and response, valvetronic is both for power and efficiency for example. Highway it uses 7/100 sure, (litres) but cane it on the track and it's more like 35/100 lol |
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07-17-2012, 07:10 PM | #87 | |
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"The N52 is a aluminium/magnesium composite block engine. It is designed to be lightweight and for sub 200kw this is a good tradeoff. Increasing the stress on the engine with forced induction is not a good idea. Its the "Camry" of BMW engines and designed to be economical and meet euro standards. If you want to beef up the N52 then you should try and find ways to mitigate the fuel efficiency devices i.e. DISA. If you want to experiment, try and force the 2nd DISA actuator to be open at all times (3rd stage of the manifold). This should allow the maximum volume of air in the manifold be available at much lower rpms. Might not make the peak hp any higher but might give more power down low. Remember this quote? It was was reply to a thread you started some time ago. You didnt learn then and not now it seems. An engine block itself is a most important piece in holding everything together. Mg doesnt have the strength to do that. You should try and google aluminum cylinder walls. Street high perf engines dont have Al cyl liners. They have cast iron liners. The N54/55 have cast iron liners. Maybe you can google why the 1M didnt use the mag block. If its strong enough to handle the boost and lighter it would be insane not to use it in the newest M car. Maybe theres a google funtion to answer your question about why there hasnt been a F/I N52 engine on the road in so many years of production? I'll tell you why, it wont handle it. Keep dreaming with your head in the sand for the magic hp bullet for your car. Last edited by NYC6; 07-17-2012 at 07:25 PM.. |
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07-17-2012, 07:29 PM | #88 |
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Ya know, 1addicts should be called 135addicts. As the original post says. No love for the 128. I am sure that there are a number of reasons why. This section is the only section in the entire forum where 128 owners get to play and chat. I'll add mine later. But please stay on topic, don't bash the 135 cuz then they get mad and come in our sandbox and kick the sand around. Stay on topic.
My 128 is awesome, Non RFT, BMW PE and the M3 sway bar and it's almost as fun to drive as my 318 Ti.. |
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