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03-09-2009, 03:14 PM | #1 |
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Mazda to compete in Targa Tasmania with Turbocharged RX-8 SP
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03-09-2009, 04:10 PM | #2 |
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So basically building the car that SHOULD be on showroom floors.
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03-09-2009, 04:18 PM | #3 |
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Not really. Rotaries are pretty reliable until you add forced induction. The apex seals vulnerability to detonation is the ultimate reason why your earlier turbo 13b's have so many engine problems. And with only 275hp, you'd still be calling it slow. Not worth it for the customer or Mazda, IMO.
Even though it would be awesome... |
03-09-2009, 04:25 PM | #4 | |
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03-09-2009, 11:59 PM | #5 | |
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03-10-2009, 12:17 AM | #6 |
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just leave the RX8 the way it is, naturally aspirated, to keep the rotary "spirit" alive. MZR 2.3 turbo for the RX7 though!
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03-10-2009, 12:30 AM | #7 |
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03-10-2009, 12:43 AM | #8 |
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I have an FD, and it's a great car, but I'll likely sell it in the fall. Reason being, I can never feel completely comfortable driving it. Only has 34k miles (original) and has no problems, but it's hard to get the thought out of my head that it could grenade at any time. It's hugely fast, nimble, smooth, makes a great noise, beautiful, and it's comfortable. But I'd rather drive something even not quite as fast or pretty if I could hammer on it without fear.
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03-10-2009, 01:18 AM | #9 | |
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03-10-2009, 01:21 AM | #10 |
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275bhp isn't squat for a turbo RX-8. That's a very conservative tune.
That said, if they had this turbo option and the Mazdaspeed front bumper they could have convinced many more potential buyers who were on the fence. |
03-10-2009, 01:30 AM | #11 | |
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2. get rid of the precat in the downpipe, it clogs up and causes excess heat 3. eliminate the AST or replace the stock plastic one with an aluminum one 4. upgrade radiator and intercooler 5. better yet go with a V-mount intercooler/radiator setup 6. upgrade oil coolers 7. run a vented hood 8. replace all old rubber hoses and couplers, the heat causes them to become brittle and crack 9. ceramic coat or wrap "hot parts" 10. put a turbo blanket on the turbine housing on your turbo 11. have Steve Kan or another wicked Rotary Tuner give you a rock solid tune 12. run water/methanol injection purely as an detonation supressant there you go, reliable FD u can hammer on, again and again, at the track or on the street Oh yah, read howard coleman's stickys in the Auxillary Injection forum on RX7club.com http://www.rx7club.com/forumdisplay.php?f=173 |
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03-10-2009, 01:37 AM | #12 | |
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The stock RX-8 is fine for real driving enthusiasts who like cars that reward skill. But for the rest of the people who need power to feel fast the RX-8 doesn't fill the pallet. A 275bhp is a pretty conservative tune, but that's plenty of power for the RX-8 especially when the roads get technical. The engineers probably didn't want to take away from the cars neutral balance. |
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03-10-2009, 02:34 AM | #13 | |
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A Z06 with a Pfadt coilovers, Pfadt swaybars, Brembo BBK, CCWs, and Michelin PS2s couldn't make me smile the same way an RX8 with Swift springs, Koni yellows, ProgressTech swaybars, RacingBrake rotors, Enkei RPF1 and Falken Azenis RT-615s could. It feels like an extension of your own body. So much driver feedback. I'm swooning...i used to be spoiled by brute horsepower and torque like the Viper. But after driving some MX5/Miata, RX7s, RX8s... *sigh* I'm now spoiled by light weight stiff chassis, excellent weight distribution, quick, nimble, driver feedback rich steering, wicked suspension layouts... it really isn't all about horsepower, it's not everything, for me at least. not anymore. I'm officially a Mazda whore, i hope Mazda never stops making sports cars. Mazda sports cars are like Ballet Dancers around a track, a Viper is like a Football player around a track. Last edited by DeeBoy; 03-10-2009 at 02:40 AM. |
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03-10-2009, 09:07 AM | #14 | |
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Agree, but if the balance and communication is there it never hurts to have alittle more power, especially if it is well integrated and throughout the revband. That is why I said this is how it should be sold, a low pressure turbo and the extra HP and Torque would not overwhelm what is a well balanced chassis. If the gas milage was not so poor (I drive allot of miles for work) there would be an RX-8 parked in my driveway right now, I hope the update to DI helps solve some of the fule consumption issues. I would take a NA/DI RX-8, with about 270hp and 25mpg on the highway it would be perfect. |
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03-10-2009, 09:32 AM | #15 |
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03-10-2009, 09:47 AM | #16 |
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Awesome. Hope the car does well.
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03-10-2009, 09:54 AM | #17 |
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The 30% increase in torque would make that car so much fun. That seems to be the real gain, no the 47 HP.
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03-10-2009, 10:01 AM | #18 |
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Here's a full article on the car courtesy of Gomez on RX8club:
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03-10-2009, 10:12 AM | #19 | |
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Even though, IMO, the FD shape is classic and beautiful, I also really like the RX-8 design as well. The more I see it on the road, the more I like it. I like that the rear seats will fit two adults with their legs still intact. I would love to see more power. I would love to see a turbo or 3-rotor RX-8 or a MX-8 with the 2.3 DISI turbo. I wouldn't mind seeing a MX-8 with the 360HP V6 TT eco-boost engine either. |
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03-10-2009, 01:00 PM | #20 | |
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That is probably the absolute most absolute rock-solid reliable build you can do (been lurking rx7club for like 6 years, heh), but I've met several guys with setups like that who still wound up replacing an engine. God, if it were easier I would just RENESIS swap an FD. |
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03-10-2009, 09:43 PM | #21 |
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03-10-2009, 11:20 PM | #22 | |||||
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I have a real water temp gauge on the car, and all is well on the water temps, but if I even see close to dangerous this summer, I'll do the radiator. The intercooler - well, you can't do much on the FD modwise before you run into danger. Some people follow the rule, pick three from among intake, IC, downpipe, midpipe, and muffler. Some say its more like two... Quote:
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Also, beyond the reliability question, there is a personal one as well - wife and I are going to try and start a family this year, and I own The FD, and a 91 miata I turbo'd, which I DD. Wife has the WRX wagon. I'll probably need to get something I can fit a baby seat in, and the turbo miata isn't worth enough money to bother selling. But I guess I'll see whether I fall in love with the FD over the summer. I bought it in the fall last year and didn't drive it all that much, as I got down to installing the DP and AST, and gauges pretty fast. Then I put it away for the winter. Wasn't going to let it see salt and ice and crap. |
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03-11-2009, 12:07 AM | #23 | |||||
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In all fairness, I grabbed the prop on the Sub once in the summer, and it burned the heck out of me too. Quote:
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I have a Greddy pop-off (pressure relief) valve, not to be confused with the BOV function. Basically it bleeds off pressure above a set psi. I think it's a great idea if implemented as a last resort to protect against boost spikes, as long as the spikes are reasonably under control. Shouldn't be used as a band-aid. I have all aluminum IC piping though. I suppose you could mount it to the bottom side of a Greddy aluminum intake elbow in your otherwise stock configuration. http://www.thezstore.com/page/TZS/PROD/10-2131 http://www.rx7store.net/product_p/greddyelbow.htm Quote:
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03-11-2009, 12:28 AM | #24 | |
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Piston rings typically sit below the piston face, so therefore somewhat shielded from the effects of detonation. Apex seals hang 'out in the open'. That's why you can take a bit of knocking on a piston engine; not so much on a rotary. http://static.howstuffworks.com/gif/...gine-rotor.jpg http://en.wikipedia.org/wiki/File:47mm_piston_rings.jpg Non-turbo rotaries have been known to last over 200k miles; some succumb to carbon deposits that makes a seal stick 'open', causing loss in compression. The seals on a rotor sit over leaf springs, which allows the seals to keep consistent contact with the housing face. If too much carbon builds up, the seals can become 'stuck'. That's why rotaries not only love to be revved, it's suggested that you do so to help keep carbon deposits from building up. Driving a rotary like a grandma can be just as bad as beating on it. |
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03-11-2009, 02:51 AM | #25 | |
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(straight, bishes) And yeah, I can live with a lower HP car that handles well and feels communicative. I test drove a Honda Fit the other day, and as cheap and economy-focused as it is, it still was a fun little thing to thrash around in. |
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