Gareth Posted March 3, 2008 Share Posted March 3, 2008 What you're looking at is the new BMW V8 engine with two turbochargers, direct fuel injection (and no, this is not a diesel engine), and a direct fire ignition system. Now that is car porn! As you can see, the turbochargers are mounted between the cylinder banks, and are controlled by conventional wastegates (contrary to newest Porsche designs, the turbos also have fixed geometry). This position is said to reduce weight because of less piping needed to feed the turbos. To comply with the newest smog standards, the catalytic converters were located just behind the turbos. I'm curious how they are going to deal with the heat insulation - it's not going to be an easy task with two screaming hot turbos lying just below the hood and two downpipes routed just in front of the firewall. The engine is said to be capable of producing 400HP with a crapload of torque. Like the previous twin turbo inline six, the turbos are tuned for smoothness and a flat torque curve rather than all-out high RPM power, like the NA M engines. It will be available in the new X6, and after its release other models (think 5, 6, 7, X5 etc.) will also receive it. There's some bad news, too: an aquaintance of mine spoke to a BMW engineer about the twin turbo six and asked if it had any potential for serious power upgrades, and, sadly, the answer was NO. The reasoning behind this is that the engine is made to handle exactly what it came with from the factory, which means it won't be able to handle much more than 300HP (400HP in case of the new V8). Thankfully, more and more tuners are modifying the twin turbo sixes to power levels upwards of 400HP, so there might be something in these engines after all. But still, in terms of bottom end strength for dollar, nothing beats 2JZs and other motors like that... But please, don't start a typical "what's better" discussion, I think it would be more useful to look what the future of car engine looks like... As always with BMW, it looks promising to me. Quote Link to comment Share on other sites More sharing options...
G.I.jonas Posted March 3, 2008 Share Posted March 3, 2008 I dont like the design personally,newer not always better. Quote Link to comment Share on other sites More sharing options...
TrumpetRhapsody Posted March 3, 2008 Share Posted March 3, 2008 I think this is the route that most car manufacturers are starting to go. Less overengineering to save on costs. This is great for the average car buyer, since it helps to lower costs, but for the tuner it's not so great. I also think having the exhaust on top is a fantastic idea. Just from a dynamics standpoint, heat rises, so having it on top should help with heat soak somewhat. Plus it would be pretty sweet to have your exhaust coming out the hood. The ITB with velocity stacks look, but backward! Quote Link to comment Share on other sites More sharing options...
G.I.jonas Posted March 3, 2008 Share Posted March 3, 2008 Good call on that,screw the down pipes-juse make some short "up pipes" that stick up through the cowl. Quote Link to comment Share on other sites More sharing options...
m4xwellmurd3r Posted March 3, 2008 Share Posted March 3, 2008 so that would be the equivilant of us making the turbo mount to the intake AND exhaust manifolds, with the TB in front of the turbo... on our Z's HOLY CRAP....there would be 0 piping at all. the downside is no IC. but that would be crazy. intake and exhaust manifolds only, no piping at all. I guess one way would be to have a small IC integrated into the intake manifold, with a scoop on top to blow air through it, but i doubt it would be effective. Quote Link to comment Share on other sites More sharing options...
G.I.jonas Posted March 4, 2008 Share Posted March 4, 2008 Look at the pics better-it is intercooled. Quote Link to comment Share on other sites More sharing options...
73DatsunZ Posted March 4, 2008 Share Posted March 4, 2008 Nice nice, I am liking it. I wonder which model its going to go in. Quote Link to comment Share on other sites More sharing options...
340ZXTTAZ Posted March 4, 2008 Share Posted March 4, 2008 are you sure that its not diesel? I don't see any valves on the first pics and just a giant injector just like a diesel would? Quote Link to comment Share on other sites More sharing options...
G.I.jonas Posted March 4, 2008 Share Posted March 4, 2008 I don't see any valves on the first pics and just a giant injector just like a diesel would? Are you saying Deisels dont have valves?? im lost here. Quote Link to comment Share on other sites More sharing options...
Pete84 Posted March 4, 2008 Share Posted March 4, 2008 Looks like those intercoolers are plumbed for liquid cooling. I wonder if they created a thermal boundary layer to keep those turbos from cooking everything else. Give it a few years, and all the wiring will otherise be toast. Think Z32TT, but worse. Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted March 4, 2008 Share Posted March 4, 2008 Direct injection gas, not diesel. Very cool, doubt BMW would not think of heat barriers etc... Evan Quote Link to comment Share on other sites More sharing options...
firm Posted March 4, 2008 Share Posted March 4, 2008 When you refer to the TT i6, you are talking about the motor out of the 335/135i, right? From the reading that I've done on it it seems to actually be a pretty impressive motor. I admit that my reading hasn't been extensive or anything, just lurking on the forums and learning what I can when I have nothing better to do.. But from what I've learned all that needs to be done is a tune and it makes close to 400whp with no bolt-ons whatsoever. I would think that if that's true then it would seem to me that if the car was modified to breathe a bit better and then tuned that 450+whp wouldn't be out of the question without spending a lot of money on modifications. Feel free to ignore this post, I'm mainly using this thread to learn a bit more and hope that the potential replies can help me with this. Right now I'm just going off of a little bit of knowledge and a bare-bones history with modifying cars. Quote Link to comment Share on other sites More sharing options...
KillerBjt Posted March 4, 2008 Share Posted March 4, 2008 Btw this isnt really a new idea, Audi has been doing it for over 4 years..... well other than the turbos over the intake. Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted March 5, 2008 Share Posted March 5, 2008 WHY direct injection?!?! the fuel needs to atomize with the air for a better combustion and efficiency! Why do formula one engines have stand off injectors BEFORE the velocity stacks?! not for awe factor! Just sounds like a stupid idea Quote Link to comment Share on other sites More sharing options...
zero Posted March 5, 2008 Share Posted March 5, 2008 Why do formula one engines have stand off injectors BEFORE the velocity stacks?! not for awe factor! Just sounds like a stupid idea No, this is why. 5.7 Fuel systems 5.7.1 The pressure of the fuel supplied to the injectors may not exceed 100 bar. Sensors must be fitted which directly measure the pressure of the fuel supplied to the injectors, these signals must be supplied to the FIA data logger. 5.7.2 Only one fuel injector per cylinder is permitted which must inject directly into the side or the top of the inlet port. Quote Link to comment Share on other sites More sharing options...
DemonZ Posted March 5, 2008 Share Posted March 5, 2008 That looks like an impressive motor. It sure will be interesting how they'll contain the heat. Also I'm not doubting what your BMW friend said, but I'm guessing that there is a healthy headroom in the design of the ttL6 for manufacturing reasons. If tolerances are on the razor's edge, it would open them up to a lot of warranty work. Wishful thinking on my part I guess... Quote Link to comment Share on other sites More sharing options...
boodlefoof Posted March 5, 2008 Share Posted March 5, 2008 I wonder how much weight they figure that they save? With the turbos mounted above the engine though, you're placing all of the weight that there is pretty high up. Quote Link to comment Share on other sites More sharing options...
rudypoochris Posted March 5, 2008 Share Posted March 5, 2008 I also do not understand why one wouldn't go for a single turbo setup at that point. I think the turbos up top is probably more for clearance than anything else, but that is a guess. Quote Link to comment Share on other sites More sharing options...
fhptom Posted March 5, 2008 Share Posted March 5, 2008 That engine barely made it a third of the way through the ROLEX 24. My friend works with the guys who one the Koni championship last year and they got one of the new V8s to run in the 24hr race. Automatic Racing I believe he said they spun a bearing or something small like that then parked the car before it got any worse. Quote Link to comment Share on other sites More sharing options...
G.I.jonas Posted March 5, 2008 Share Posted March 5, 2008 Look at the second pic,yeah it looks like an impressive setup-but has anyone else noticed how the manifold is designed in such a way that exhaust has to double back at nearly a 90 degree angle? this is not optimal(not a huge deal either but..).It seems to me they could have gone single turbo with the manifold runners shooting exactly straight into a turbo which would eliminate that problem as well as other problems.....IMO. Quote Link to comment Share on other sites More sharing options...
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