Mallard Posted October 9, 2004 Report Share Posted October 9, 2004 http://www.mazdausa.com/MusaWeb/displayPage.action?pageParameter=mazdaSpeed6 Click the link and watch. I'm gonna have to get a test drive. Quote Link to comment Share on other sites More sharing options...
BIGGU Posted October 9, 2004 Report Share Posted October 9, 2004 than 6 looks like it will be one mean car Quote Link to comment Share on other sites More sharing options...
Conesmasher Posted October 9, 2004 Report Share Posted October 9, 2004 Looks pretty cool, direct injection is a bad ass feature. Quote Link to comment Share on other sites More sharing options...
Alex1647545498 Posted October 9, 2004 Report Share Posted October 9, 2004 Sounds good. Would like to see more info then they have on that site though. Quote Link to comment Share on other sites More sharing options...
smokin5s Posted October 9, 2004 Report Share Posted October 9, 2004 hmmmm I might consider it in '06 when it comes out... we'll see how the ol' GP is holding up then. Quote Link to comment Share on other sites More sharing options...
BiG BeN Posted October 9, 2004 Report Share Posted October 9, 2004 Originally posted by Cone Smasher: Looks pretty cool, direct injection is a bad ass feature. i don't get it...you mean as opposed to TBI? or is it on the other side of the valves or something? Quote Link to comment Share on other sites More sharing options...
Mallard Posted October 9, 2004 Author Report Share Posted October 9, 2004 Originally posted by BiG BeN: i don't get it...you mean as opposed to TBI? or is it on the other side of the valves or something?fuel is directly injected into the combustion chamber as opposed to inside the intake port. It's a good thing since you don't have to worry about detonation as much (you can inject the fuel any time you want.) and it helps effeciency. smile.gif Quote Link to comment Share on other sites More sharing options...
Orion Posted October 9, 2004 Report Share Posted October 9, 2004 wow. i may not be a subaru owner for long. Quote Link to comment Share on other sites More sharing options...
Brandon Posted October 9, 2004 Report Share Posted October 9, 2004 that is very interesting Quote Link to comment Share on other sites More sharing options...
Guest jpurdy2003 Posted October 9, 2004 Report Share Posted October 9, 2004 If this is limited production like the mazdaspeed protege, someone at Mazda needs to be slapped. Quote Link to comment Share on other sites More sharing options...
HotCarl Posted October 10, 2004 Report Share Posted October 10, 2004 NICE, i was surprised to see an AWD system. Mazda doesn't manufacture any other model as AWD do they? (beside's the MURANO) wasn't there an ugly rumor it was suppost to be TT? Quote Link to comment Share on other sites More sharing options...
Guest jpurdy2003 Posted October 10, 2004 Report Share Posted October 10, 2004 Originally posted by harry's94tsi: (beside's the MURANO) That's Nissan who makes the Murano. Quote Link to comment Share on other sites More sharing options...
controler Posted October 10, 2004 Report Share Posted October 10, 2004 Why does Mazda completely skip over the Rx8 when it would be easier to mod than the 6? Not to say the 6 doesn't look sweet or anything, and direct injection is a great progression expecially for gasoline turbo engines. Quote Link to comment Share on other sites More sharing options...
Nitrousbird Posted October 10, 2004 Report Share Posted October 10, 2004 Originally posted by controler: Why does Mazda completely skip over the Rx8 when it would be easier to mod than the 6? Not to say the 6 doesn't look sweet or anything, and direct injection is a great progression expecially for gasoline turbo engines.To get any power out of the rotary, they would have to go to forced induction. And their luck with forced induction hasn't exactly given the rotary a good name. Quote Link to comment Share on other sites More sharing options...
Berto Posted October 10, 2004 Report Share Posted October 10, 2004 Originally posted by Mallard: fuel is directly injected into the combustion chamber as opposed to inside the intake port. It's a good thing since you don't have to worry about detonation as much (you can inject the fuel any time you want.) and it helps effeciency. smile.gif doesn't it also keep temps down? maybe i'm thinking of something they implemented on race cars but from what i understand the fuel forms kind of a boundary layer on the walls of the combustion chamber... Quote Link to comment Share on other sites More sharing options...
Jeffrey Posted October 10, 2004 Report Share Posted October 10, 2004 I remember reading somewhere that a Turbo RX8 is in the works, something about a electronically assisted turbo. Quote Link to comment Share on other sites More sharing options...
Mallard Posted October 10, 2004 Author Report Share Posted October 10, 2004 Originally posted by harry's94tsi: NICE, i was surprised to see an AWD system. Mazda doesn't manufacture any other model as AWD do they??In Japan the 6 can come with AWD, that's where they sourced it from and why they had to use the 4 cyl. The RX8 is next on the list of Mazdaspeeds to come out. They have already had some test models given to magazines, but they only have the revised suspension, with the stock engine. I've heard a rumor of a s/c engine in the MS RX8 Originally posted by RX7dood: </font><blockquote>quote:</font><hr />Originally posted by Mallard: fuel is directly injected into the combustion chamber as opposed to inside the intake port. It's a good thing since you don't have to worry about detonation as much (you can inject the fuel any time you want.) and it helps effeciency. smile.gif doesn't it also keep temps down? maybe i'm thinking of something they implemented on race cars but from what i understand the fuel forms kind of a boundary layer on the walls of the combustion chamber...</font>I know nothing of this, it may or may not be true. The main advantage of DI is that you can run really high compression ratios because you don't have to worry about detonation. Compression ratio is directly linked with efficiency, so every little bit helps. The only thing to be afraid of is the amount of pressure a DI fuel rail requires. The diesels are around 27,000psi. I was driving one of these when the fuel rail came loose and sprayed the engine down pretty good with diesel. Not cool. Although if it makes production, the bugs will most likely be worked out, and hopefully all is good. [ 10. October 2004, 05:01 PM: Message edited by: Mallard ] Quote Link to comment Share on other sites More sharing options...
Mallard Posted October 10, 2004 Author Report Share Posted October 10, 2004 I also like that this engine is basically the same 4 cyl (minus the DI) that's in the Mazda3. And the MazdaSpeed 3 should be out in around a year or so. Hopefully this engine finds its way into some other vehicles. Quote Link to comment Share on other sites More sharing options...
SquirrelyNutsDSP Posted October 10, 2004 Report Share Posted October 10, 2004 Looks like a sweet contender in the awd turbo sedan market. I'd rock it. Quote Link to comment Share on other sites More sharing options...
BiG BeN Posted October 10, 2004 Report Share Posted October 10, 2004 i wonder if it will sound like a diesel with that injection. Quote Link to comment Share on other sites More sharing options...
controler Posted October 11, 2004 Report Share Posted October 11, 2004 To get any power out of the rotary, they would have to go to forced induction. And their luck with forced induction hasn't exactly given the rotary a good name. This is true, however the Mazdaspeed Protoege and 6 are both forced induction. Their track record with forced induction rotaries isn't the best, but if they put some more R&D into it, they could figure something out--its all about controlling heat. But I still think they should do a NA 3-rotor or something with larger displacement, even if that means different sized rotors. Quote Link to comment Share on other sites More sharing options...
rl Posted October 11, 2004 Report Share Posted October 11, 2004 Originally posted by BiG BeN: i wonder if it will sound like a diesel with that injection. No. Quote Link to comment Share on other sites More sharing options...
HotCarl Posted October 11, 2004 Report Share Posted October 11, 2004 Originally posted by The Anti-Role Model: That's Nissan who makes the Murano. im a dumbass and your right. If DI allow's you to run really high compression ratio's on an N/A motor, then what would it do in a boost application? If D/I can take care of detonation then what's stopping one from turning up the boost (save for stronger internal's)? Detonation is the number one enemy of boosted motor's, so could this be an answer? mallard, have you driven it yet? Quote Link to comment Share on other sites More sharing options...
Trouble Maker Posted October 11, 2004 Report Share Posted October 11, 2004 Originally posted by harry's94tsi: If DI allow's you to run really high compression ratio's on an N/A motor, then what would it do in a boost application? If D/I can take care of detonation then what's stopping one from turning up the boost (save for stronger internal's)? Detonation is the number one enemy of boosted motor's, so could this be an answer? mallard, have you driven it yet?Turning up the boost is just what is known as turning up dynamic compression of an engine. That 9.0:1 or 8.5:1 is just the static compression of your engine. So turning up the boost is the same thing as increasing the displacement and turning up the compression ratio. I'm very skeptical (read, I don't believe it one bit) that DI can 'eliminate' detonation. It's just the way any gaseous combustible will work when compressed. As you compress the mixture, it WILL get hotter, eventually reaching the combustion temperature before it is supposed to. The propensity of this process to pre-detonation will only be reduced allowing a combination (or even only one of); higher compression, more timing, and/or higher boost. It does this by two main effects. First, since the fuel is directly injected by high pressures, the mixture is more homogenous, creating a more efficient use of the fuel and air present. Air that isn’t used during a combustion process will create even more heat in the combustion chamber and a higher propensity to detonate. Secondly, DI uses the timing of the fuel injection to create an air ‘curtain’ around the combustion mixture, which makes an insulating barrier between the fuel/air mixture and the sides of the combustion chamber. This will mean that, theoretically the combustion process will not heat up the sides of the combustion chamber. Thereby eliminating theses pieces of metal to be a possible source of detonation, further eliminating the propensity of the combustion process to pre-detonate. If I’m remembering the article I read correctly, it does this by stopping the injector before the end of the ‘suck’ stroke and sucks air in. The way it comes in from the intake port causes it to ‘swirl’ around the sides of the combustion chamber. I’m not trying to start an argument, this is just what little I understand about the combustion process, pre-detonation, and DI. I just don’t see how the concept of pre-detonation can be totally eliminated for any gaseous combustible. If I’m wrong in any of this Mallard, please correct me. Quote Link to comment Share on other sites More sharing options...
Rally Red Evo Posted October 11, 2004 Report Share Posted October 11, 2004 Interesting. The Evo and STI have racing backgrounds, what does this have? Pricing anywhere? Quote Link to comment Share on other sites More sharing options...
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