Blog messages with the tag 'mazda rx8':
The Mazda RX2, Mazda RX3, Mazda RX4, Mazda RX7 and now Mazda RX8 are all examples of effective rotary motor jeu cars. The New Mazda 16x Rotary Engine should even more popularize this offbeat combustion engine which features (as rotaries often have) a compact style with an exceptional power-to-excess weight ratio all in just 1.6 Liters.
Mazda is calling this new rotary engine the "extended-stroke rotary engine." As you may by now know, the 13B rotary motor has a displacement of just 1300cc, which is 1.three Liters. Even though the Mazda 16x has an engine displacement of 1600cc (800cc x two), which is 1.six Liters and however they've produced the 16x significantly larger than the 13B - it weighs less than a 13B. This is due to aluminum side housings, which Mazda states shouldn't scare us.
Mazda's aim right here is "larger thermal efficiency" - which fundamentally signifies, any auto powered by the Mazda 16x is likely to shift like stink. Mazda states this [thermal efficiency] will enhance torque at all motor speeds. (Rotary engines are notorious for acquiring low torque, specifically on the lower-conclude.)
They've also additional Direct Fuel Injection so you can anticipate the 16x to be significantly much more affordable compared to rotaries of the past. Harmful emissions will be drastically reduced as well and energy ought to be somewhat elevated in comparison to common multi-level fuel injected rotaries this sort of as the 13B. This ought to lean the fuel-air mixture out as properly and might enhance the rotaries nasty behavior of flooding every single time you move her down the street a block.
Mazda has done outstanding points with their light and sporty one.three Liter 13B - just envision what they can do with this new Mazda 16x! Better but, just imagine what you could do with this new Mazda 16x rotary engine! Regrettably, however, Mazda has but to announce a manufacturing car to carry the 16x. The closest we've gotten is the Mazda Taiki, a far-out prototype produced by Mazda under the "Nagare"(which is, Japanese for "flow" idea of layout.
So when will we see this new rotary motor in motion?
A lot of expected this new rotary motor to show up in the 2009 Mazda RX8, but when the cover was pulled off at the North American Global Vehicle Display in Detroit, we saw practically nothing but the Mazda 13B MSP Renesis motor beneath it is glimmering hood.
To remedy the question your guess is as good as mine.
The 2010 Mazda RX-eight is a great tiny powerhouse with an inexpensive price tag tag. In simple fact, U.S. News and Globe Report not too long ago ranked it as 1 of the 5 most cost-effective jeu automobiles for your dollars. So what about the motor of this beauty? The 2010 Mazda RX-8 has a rotary engine, which the technological innovation is referred to as RENESIS, and it is obtainable as either a 232-hp six-velocity handbook or 212-hp six-pace activity automatic transmission.
The RENESIS rotary engine is the up coming era of rotary engine that driven the RX-7, retaining the electrical power of the previous rotary design 13B-REW, holding onto all the electrical power of the RX-seven, although increasing fuel economic system and reducing emissions, even though the rotors weigh about 14% less than the ones used in the engine of the RX-7.
To start with, a temporary preview of the Mazda RX8. The high level of consideration is not only due to the car's admirable driving dynamics but, in component to the early studies of under-than-anticipated efficiency. To be far more particular: wheel horsepower measured on many chassis dynamometer runs resulted in values effectively beneath the anticipated 17%~twenty% drivetrain parasitic losses. And quarter mile runs of everywhere between .five and one.five seconds off of those produced by publications on allegedly pre-creation automobiles.
In link with the RX8's horsepower rating: the authentic marketing and advertising substance from Mazda North America (MNAO) advertised the 6 velocity handbook transmission RX8 at 247hp @ eight,500rpm. Assuming parasitic drivetrain loses in between 17%-twenty% -frequent for contemporary rear wheel generate autos, a stock RX8 ought to measure between 205~197 horsepower at the rear wheels (rwhp) -depending on elevation, barometric pressure, temperature and correction factors used. Instead, a stock RX8 chassis dyno operate displays benefits ranging anywhere from mid-high ~160 to ~185rwhp. This kind of readings would represent parasitic drivetrain loses in extra of twenty five%. To say that, it is unacceptable to expertise this kind of a high level of reduction through the drivetrain of a "sports car" with a carbon fiber drive shaft -among other things- is an understatement.
To additional consolidate doubts about the actual electricity output of the new Renesis, a number of proprietors have been unable to reproduce mid-lower 14 second quarter mile passes -as witnessed published by properly known U.S. automobile magazines. Reduced trap speeds ended up an additional hint in direction of the clear absence of electricity output.
Shortly following, numerous debates on on the internet fanatic forums and discussion boards turned into heated arguments as to what was leading to this sort of very poor "straight line overall performance." A lot of previous Miata proprietors remembered a prior "snafu" in Mazda's heritage, when the maker admittedly overstated the horsepower figures of their redesigned Mazda Miata.
Soon after a number of months, MNAO came ahead and explained that they had misrepresented the Renesis' electrical power output. The revised figure was now 238hp @ 8,500rpm nonetheless, in accordance to MNAO, this revision did not transform the beforehand reached monitor efficiency final results.
Speculations about the factors behind the sudden absence of electricity output were a lot of. Even so, there are currently two schools of assumed:
The 1st 1 supports the concept that the RX-8's motor management unit (ECU), in conjunction with the numerous "nanny" products -this kind of as ABS & TCS- do not let to acquire precise readings from a chassis dynamometer. To simplify, when the car is operate on a chassis dyno, only the pushed wheels are turning. The RX-8's ECU would detect an irregular driving situation and retard timing and utilize other safety measures to maintain either the "driver" or the "engine" -or each- from damage (study: skidding predicament, or a car going out of the road.)
The second a single believes that MNAO was compelled to re-engineer the software program that runs the engine conduite even before the initial batch of RX-8's attained U.S. shores, due to upcoming Federal emissions rules. I have go through of a single in particular, which needs catalytic converter lifespan of ~a hundred,000 miles.
The Mazda RX2, Mazda RX3, Mazda RX4, Mazda RX7 and now Mazda RX8 are all examples of profitable rotary engine sports autos. The New Mazda 16x Rotary Motor should further popularize this offbeat combustion motor which features (as rotaries usually have) a compact design and style with an outstanding electrical power-to-fat ratio all in just 1.six Liters.
Mazda is calling this new rotary motor the "extended-stroke rotary motor." As you could currently know, the 13B rotary motor has a displacement of just 1300cc, which is 1.3 Liters. Even though the Mazda 16x has an motor displacement of 1600cc (800cc x 2), which is 1.6 Liters and even though they've created the 16x considerably bigger than the 13B - it weighs much less than a 13B. This is due to aluminum side housings, which Mazda says shouldn't scare us.
Mazda's aim right here is "better thermal efficiency" - which fundamentally implies, any car powered by the Mazda 16x is going to shift like stink. Mazda says this [thermal effectiveness] will enhance torque at all engine speeds. (Rotary engines are notorious for obtaining lower torque, especially on the reduced-stop.)
They've also additional Direct Fuel Injection so you can count on the 16x to be considerably more affordable compared to rotaries of the prior. Dangerous emissions will be significantly diminished as nicely and electrical power really should be marginally enhanced compared to widespread multi-point fuel injected rotaries such as the 13B. This must lean the fuel-air mixture out as properly and could improve the rotaries nasty behavior of flooding every time you transfer her down the street a block.
Mazda has done incredible points with their light and sporty 1.3 Liter 13B - just envision what they can do with this new Mazda 16x! Better nevertheless, just visualize what you could do with this new Mazda 16x rotary motor! However, however, Mazda has but to announce a manufacturing car to carry the 16x. The closest we've gotten is the Mazda Taiki, a far-out prototype created by Mazda beneath the "Nagare"(which is, Japanese for "flow" notion of layout.
So when will we see this new rotary motor in motion?
A lot of expected this new rotary motor to seem in the 2009 Mazda RX8, but when the cover was pulled off at the North American International Vehicle Demonstrate in Detroit, we saw practically nothing but the Mazda 13B MSP Renesis motor beneath it's glimmering hood.
To answer the issue your guess is as good as mine.
I was pressured to commence looking at potential replacements for the stock Bridgestone Potenza RE040 (225/45/eighteen) somewhat soon after hitting 25,000 miles on them. I was challenging pressed by economic good reasons to uncover the most inexpensive possible tires that would offer you a comparable or higher tread life (greater was much better) and a good stage of performance on dry surfaces, as nicely as wet. I eradicated a number of candidates ahead of settling for the Sumitomo HTRs, specifically:
Fuzion ZRi: Funky searching tread pattern. In other words, all-show-no-go.
Yokohama AVS ES100: Pretty respectable evaluations general, but...heck! ended up over budget!
Dunlop SP Sport FM901: Had blended feelings about these, and some pointed to one more taste of Fuzion 'philosophy.'
Nitto NT555: These tires received great opinions total from the quarter mile crowd, which didn't quite say considerably about the tire ability to flip...so, discarded.
Sumitomo HTR Z II: Out of stock!
So following a temporary dialogue with a TireRack product sales guy, he encouraged the Sumitomo HTR+.
The 2010 Mazda RX-8 is a nice tiny powerhouse with an inexpensive price tag. In truth, U.S. Information and Planet Report just lately ranked it as 1 of the five most cost-effective sports activities cars for your funds. So what about the engine of this splendor? The 2010 Mazda RX-eight has a rotary motor, which the technological innovation is named RENESIS, and it is available as either a 232-hp 6-velocity handbook or 212-hp 6-pace sport automated transmission.
The RENESIS rotary motor is the following era of rotary engine that powered the RX-7, retaining the electrical power of the earlier rotary design 13B-REW, keeping onto all the electrical power of the RX-7, while growing fuel financial system and decreasing emissions, while the rotors weigh about 14% much less than the ones employed in the motor of the RX-7. The RENESIS motor also has its intake and exhaust ports in the side housings, which makes it possible for far better heat dissipation and a extended electrical power stroke.
RENESIS also jeu a 6 port induction technique, referred to as 6PI. Each and every rotor utilizes 3 of the ports, and each and every also uses a variable intake timing mechanism, which enables it to maximize compression effectiveness at each substantial and lower speeds. In addition, the RENESIS has two exhaust ports for each and every rotor. This enables a huge reduction in exhaust resistance.
Equally the automated and manual models have a 1.three liter, two rotor rotary motor, able of 159 lb-ft of torque at 5500 rpms and are capable of a displacement of 1308 cc and a compression ratio of ten.: one, getting confident you are going to get a great deal of electrical power for your dollar. The fuel economy is improved from the RX-seven as properly... this automobile averages 16 mpg in the city and 22-23 on the freeway (23 for the sport automatic, 22 for the manual transmission).
In conclusion, the motor of an RX-8 is a great piece of machinery, and if you get treatment of it, it will take care of you for many years to come.
Given that its start, the Mazda RX8 has been the issue of near scrutiny by enthusiasts. The high degree of attention is not only due to the car's admirable driving dynamics but, in component to the early reviews of below-than-expected performance. To be far more particular: wheel horsepower measured on numerous chassis dynamometer runs resulted in values properly below the anticipated 17%~20% drivetrain parasitic losses. And quarter mile runs of wherever between .five and 1.5 seconds off of those made by publications on allegedly pre-creation automobiles.
In link with the RX8's horsepower rating: the authentic marketing and advertising substance from Mazda North America (MNAO) advertised the six pace handbook transmission RX8 at 247hp @ 8,500rpm. Assuming parasitic drivetrain loses between 17%-twenty% -widespread for contemporary rear wheel generate cars, a stock RX8 must evaluate in between 205~197 horsepower at the rear wheels (rwhp) -dependent on elevation, barometric stress, temperature and punition aspects applied. Instead, a stock RX8 chassis dyno run displays results ranging anywhere from mid-substantial ~160 to ~185rwhp.