Is there anyway to for the Apex Seals to stop deteriorating?
>>13867363
Using pistons
>>13867363
liquidpiston
>>13867363
Is there any way to stop piston rings from deteriorating?
>>13867398
no but you can slow it down so much they'll last ~2 million miles
Yes, but not without changing the seal, housing and port geometry.
Pre mix helps, so does changing oil and spark plugs. Rev it up every once and a while, make sure it warms up and cools down, so forth. If you have an FC using three window bearings should help.
>>13867363
Adding 2-stroke fuel to your gas tank.
>>13867419
>piston rings last long all the time
>but only when i'm hating rotary
>>13867363
Premix.
They just need to be properly lubricated. Mazda's OMP solution is a half-assed one at best that's really just to keep morons from fucking it up. Ideally, 2-stroke oil would be intruced high up in the intake manifold, aerosolised and mingle with the fuel on the way down where it coats the inside of the chamber with oil far better than a drip-feed of crankcase oil.
It's a popular mod to replace the standard oil metering system with one that uses a seperate 2-stroke tank for precisely this reason.
N/A rotaries can and do last to 200k miles, quite happily. Same as any engine, so long as you look after them, they'll run.
Most people forget the 13B-series in the RX8 was the final evolution of an engine introduced in 1973.... and it needed 1973 levels of care and attention.
>>13867485
not sure what you're trying to say but it sounds like you're stuck in the 70s, kinda like rotary technology
>>13867508
>not sure what you're trying
well isn't that ironic
>>13867502
Most people also forget doritos require considerably more maintenance than piston engines for no tangible benefits.
>>13867513
awww are you getting upset because someone doesn't like your favourite engine
>>13867551
Changing the oil and filter with reasonable regularity is not 'consdereably more maintenance'.
You're supposed to keep an eye on your oil level no matter what car you drive anyway.
>>13867562
The SR16 in the Sunny I used to drive got oil changes every 50k and never drank a drop
>>13867573
>therfore doritos are bad
Also, you're a shitstain for changing your oil every 50k.
Also, you're full of shit.
Also, cocks.
Most modern, especially the turbo ones, burn more oil than my RX-7 or RX-8.
The idea of a rotary makes people angry for some reason.
>>13867579
yeah, therefore doritos are bad.
complete waste of time, glad mazda abandoned them instead of going bankrupt
>>13867363
The problem is that the owners don't realize they need to use the correct Doritos for the climate and conditions the car will encounter. I'm a Mazda master tech and I see this problem far too often.
Living in a warm climate such as Southern California or Texas, you need to run Cool Ranch Doritos. Stock Doritos will burn the apex seals within 50k miles in climates like this.
For people in climates which experience the wrath of all 4 seasons, I recommend the "North of I-80" Doritos, aka Nacho Cheese. They hold up to warm summers and cold winters quite well. The apex seals on these Doritos will easily last 150k miles as long as you pre-mix with Mountain Dew.
North of the border in CanadaLand and Alaska, we use the special "Spicy Nacho Cheese" Doritos. They are great for cold starts on the coldest of mornings.
>>13867632
I like you.
Any doritomen have any experience with aluminum rotaries?
>>13867551
>considerably more maintenance
Like what?
Please explain
>>13867669
rebuilds
>>13867591
>Most modern, especially the turbo ones, burn more oil than my RX-7 or RX-8
This is true. Many newer engines burn lots of oil, though rotary engines do it by design.
Many of the "problems" with rotary engines are found in many piston engines. Like reliability, tons of piston engines that shit themselves, and more things to go wrong and replace. You might not be rebuilding the engine as often but there are lots of more things you need to replace. People complain about mpgs, which is bad for a 1.3l but compared to many V8s it's fine. Modern V8s do better but they have much taller gearing. And before anyone says V8s make a lot more power, they did not in the 80s.
It will be interesting to see a new rotary, that isn't using updated 60s technology. There are lots of areas of improvement in the rotary engine, I'm confident Mazda can create an engine that meets modern standards. Also Mazda please make a rotary bike
>>13867677
?
That's not maintenance
Rebuilds are easy
They are not more frequent than piston engines
>>13867677
Not maintenance, and if we are including rebuilds we should include everything that goes wrong with piston engines. Dropping valves, blowing head gaskets, top end rebuilds, replacing seals, and so forth. Even if you aren't doing a rebuild that adds up.
>>13867697
>that adds up.
so does 2 stroke oil and 15mpg
>>13867705
That I can agree with you. Rebuilds are not maintenance, unless you are working on race engines.
How many people here have actually pulled a dorito out of their RX-7 or RX-8?
I know rotaries are actually quite simple by design and far less complicated to rebuilt than a piston engine. But if you have to do a rebuild on an RX-7 full of A/C equipment and all that bullshit, how long does it take between popping the hood and having the engine on the workbench ready to pull apart?
>>13867720
Fixing everything that the exhaust melts probably isn't maintenance either but there we go.
I suppose all the blown rx8s for sale were just lacking a couple of oil changes
>>13867753
I've done several rebuilds on NA and turbo FCs.
I can have an engine out in about and hour and a half.
>>13867757
>exhaust melts
Wut. Never heard of exhaust melting things.
>>13867757
What the fuck are you on about now
>>13867772
That's not too bad. Have you been around for an RX-8 rebuild? Is it significantly worse?
>>13867813
I've poked around an almost empty engine bay. Rx8 is more time consuming. I wouldn't say it's more difficult though. Just more things to move out of your way.
>>13867757
> rotary engines don't deal as well with stupid or uninformed owners as well as piston engines
this isn't really a big deal unless you're an idiot
>>13867826
I figured that just because it's newer and the engine bay has to be more tight. But if you can still get the engine out in less than 3hrs in your own garage, that's not too bad.
People don't realize how few moving parts are in a rotary compared to a piston engine. An afternoon project once every 80k+ miles or whatever isn't the end of the world.
Doritos are cool. I really want Mazda to put some effort into a new one that is a bit more respected and accepted than they have been.
>>13867852
>look how clever I am by owning an inferior engine
>b-but I'm s-still cleverer than you
nice coping method my man :^)
>>13867859
I DD'd my FC for 7 years and got above 200k miles. Was still running when I sold it. I never used premix.
Had good compression too.
>>13867865
i don't even own a rotary, i can just read and I've noticed that all the stuff about rotaries being so hard to keep running almost entirely comes from people who don't own them
>>13867421
>Changing spark plugs helps the apex seals last longer
The shit I read on /o/
>>13867865
nothing about it is inferior. it's just that you're too lazy to handle it. i mean if that's just your lifestyle go for it, i'm not one to judge. not everyone is capable of being competent at life you know?
>>13867865
> inferior engine
> needs dozens of times more moving parts to move a car
lel piston kuks
>>13867885
>forget the fact it's not very good, just look at all the missing parts!
top rotard lmao
>>13867897
>lol headgasket
>lol valveseats
>lol piston rings
>lol olo lo lo lol ol ol
>>13867906
>will suck dicks for apex seals
>>13867883
Clean plugs are less likely to be a source of preignition, chucklefuck
>>13867920
And get a cleaner burn leading to less carbon build up
>>13867916
>will suck dick for headgasket but too busy gargling balls for valvesprings and connecting rods, gruglrugrlugrlgurlug
>>13867926
aah yes, I change my conrods every 10k whether they need it or not
>>13867916
>>13867926
You can still drive home even on halve of one rotor.
>>13867949
useful feature :^)
>>13867363
You'll sooner learn how to prevent the heat death of the universe.
Or does the EM drive technically put a foot in the right direction for solving that.
>>13867363
Sure.
Tighter tolerances, heat rejecting coatings on the housings, better cooling, all allowing for less tension (weaker spring) behind the apex seals.
Given this is what's similar that went into the Skyactiv piston engines (piston ring friction counts for as much as 27% of friction losses in a piston engine), sometime similar might be done with the next rotary from Mazda.
>>13867419
really? piston rings on all the bikes ive owned need replacing like every 30 hours
shut the fuck up
dont mind me just leaving this here
http://gmauthority.com/blog/2015/10/c7-corvette-z06-and-c6-427-owners-file-class-action-lawsuit-against-general-motors/
>>13869149
So is over-tuning a truck engine for a sports car worse than de-tuning a race engine for the street?
>>13867916
Someone please post that image.
>>13867363
Ceramic seals
>>13867916
Apex seals aren't expensive though
>>13869194
Yes
>>13867632
Top Kek
Put a smile on my face.
What is an apex seal? My Google broke.
>>13869560
the seal on each apex of the rotor
>>13869560
A piece of metal that sits in the corner of each rotor and acts as a seal between the "combustion chambers"
Because of the shape of the housing the apex seals are pushed in and out in and out in and out. As you can imagine this causes a good amount of wear over time
>>13869560
It's like a piston ring but 1000x shittier
>>13867632
>>13869583
>Because of the shape of the housing
That's not why. It's because of heat expansion on the metals.
>>13869223
>>13869060
Were they MX bikes?
Some bikes are meant to last long and some are meant to go fast. I've ridden my thumper over 100 hours this year alone, and it hasn't needed new pistons, rings, valves, crank, bearings, or anything else really.
>>13867632
Can someone screen cap this pls? My phone can't get it all in one capture.
>>13870140
I got that post and OP
>>13870140
What phone?
>>13870154
>>13870223
>tfw I didn't screegrab the responses with (You) before mobile went and switched everything up
Nobody will ever believe me now.
>>13867363
Is there anyway to stop people from aging?
>>13867446
This.. 500ml to every full tank.
>>13867363
Nope. Its the price of rice.
>>13867363
making them out of unobtainium.
>>13871309
Is there any proof that those additives work?
I mean actual testing in a lab.
The people that use that stuff tend to be people who do all the regular maintenance and who have some reliability mods. So it can be a case of just those things making them last longer.
I've seen plenty of FDs with 125k+ miles between a rebuild that don't use that stuff.
>>13872962
>Is there any proof that those additives work?
NO. Lubricating oil specifically designed to be mixed dilute in gasoline for the sole purpose of lubricating metal parts that rely entirely on the injected fuel for lubrication doesn't work.
>Don't forget to pre-mix!
Why does this picture exist?
>>13867678
RX8s MPGs were similar to the S2k. People complaining about MPGs in a sports car are kind of retarded and normie-tier anyway.
>>13869421
Neither are headgaskets.
>>13873241
Doritosgate
http://knowyourmeme.com/memes/events/doritosgate
>>13873761
I had 2 Rx8's.
12-13mpg around town commuting to work.
I get 15 on the same exact fucking routes with a 7.0 500hp V8.
I want to believe, but nah. They aren't worth it.
>>13867678
>It will be interesting to see a new rotary, that isn't using updated 60s technology. There are lots of areas of improvement in the rotary engine, I'm confident Mazda can create an engine that meets modern standards. Also Mazda please make a rotary bike
A Suzuki or Yamaha partnership with Mazda to make bike engines would be fucking rad.
But the Skyactiv-R probably is an extension of the 16x which was an extension of the Renesis which is an extension of the 13b.
I don't think there is anything that revolutionary.
Rotors were the same, just a little larger.
Intermediate and end housings are largely the same except there is a split center exhaust port so there's less heat there which was a problem with Renesis.
The direct injection isn't really direct injection. Rotaries already gain efficiency from a stratified charge that makes DI pretty useless. They just moved the spray in the chamber and sped it up to control the amount of fuel better.
The most major change is new side housing design that's thinner and lighter, and that hopefully isn't going to bring reliability issues.
I don't think you need something revolutionary, though. Just an improvement on the Renesis II and mild turbo should be plenty reliable.
I would like if they added a third spark plug and played with the combustion chamber shape (sounds like they might given some things they were talking about at some recent conferences), or laser ignition. I'd consider those more revolutionary changes I guess?
I'd imagine they're going to do something to greatly reduce apex seal friction and improve their durability(If there was less friction, seals could be shorter, and there is less leverage for them to snap against), but they went and made the outer housing thinner which I'd imagine would mean more warping and not less.
>>13873846
Uhhh I got about 20-22mpg in my FD driving to work and it was street ported.
Single digits when I was driving it hard.
I don't get how the RX8s can be so bad. I thought it's supposed to be more efficient?
Does the side ports and emissions shit hurt it that much, or what?
is this dohreetoe a good idea? do they really overheat as easily as I hear? what is life?
http://miami.craigslist.org/pbc/cto/5303972688.html
>>13874099
triangle a shit
>>13874110
thanks.... that's all I needed
>>13874099
Would buy. That's damn clean
>>13874099
I DD'd one for 7 years with no overheat.
Not sure where you're getting your info from.
The cooling system is like any other car
>>13874099
There is a temp gauge, you know.
Just make sure it's working.
>>13874099
>http://miami.craigslist.org/pbc/cto/5303972688.html
That's not a real Turbo 2. It's not even turbod. So I'm not sure that 3500 is worth.
Looks damn clean though. Polish up the lights and it'd be gorgeous.
The gold with black wheels looks fucking awesome.
>>13874099
n/a rotaries are pretty solid when treated properly
>>13873846
>12-13mpg around town commuting to work
flooring it everywhere bro? should get 15mpg ez driving like a sane person
>with the homogeneous charge compression ignition (HCCI) expected for the second-generation SkyActiv 2 technology due in 2020. Like diesel engines, HCCI relies on extra-high compression to ignite fuel,eliminating the need for spark plugs altogether and reducing consumption and emissions significantly.
>Fujiwara declined to officially confirm the move to compression ignition, but his wry smile response hinted this suggestion isn't far off the mark.
I think this is complete bullshit, but posting it anyway.
>>13875288
sounds just like LiquidPiston™ technology
>>13873241
That's awesome, saved.
More grounded stuff.
>You will have to wait until 2017 to find out what will power this car
said a Mazda executive.
>That’s our rotary’s 50th anniversary year.
...
>The SkyActiv-R's biggest gain will likely revolve around the way it burns fuel, with Mazda developing unique methods for analysing and measuring the combustion process.
>Fujiwara explained that regular piston engines can be analysed with standard techniques, but the lack of such tools for rotary engines has hampered their efficiency in the past.
This was said before, that before they didn't have computed aided design to help analyze the way combustion happens and applies torque against the rotor at all sorts of RPMs.
The engineering behind timing the spark plugs on previous rotary was very rudimentary. They said they now have new simulations to solve those engineering problems specifically for the Rotary.
>Previous rotary engines have also been compromised by the need to locate the spark plug outside the combustion chamber to allow the rotor to sweep past, but Fujiwara confirms this has been solved for the SkyActiv-R.
I know a considerable amount about Rotaries, but I'm not sure what this means?
Does he mean how they're recessed a little bit so apex seals slide past them?
I'm guessing new flush spark plugs or the spark plugs are now on the rotors themselves?... That would definitely help with a more complete burn for more power and lower emissions.
No, it can't be on the rotors, since changing them would be a fucking nightmare.
I heard from Mazda engineers at a conference a year ago that they were completely redoing the gas and oil seals that hadn't been changed since the 70s as well. They said those were a very large part of the past engines problems.
Sounds like the new Skyactiv-R will be more of a revolution than simply an evolution of the past. Doesn't seem like a single thing about it will be the same except maybe intake ports.
>>13875382
More stuff, but this is stuff that's probably BS.
>A source close to Mazda says that to address the 13B's thirst, lack of mid-range torque and excessive oil consumption, the company is currently testing a new hybrid turbo rotary engine, which is still referred to as the ‘16X’ and boasts a twin-800cc rotor set-up, but is expected to generate more than 335kW(450hp).
>a source close to Mazda says
>450hp
kek
>What's more, unlike the MX-5, it will drive its rear wheels via rear transaxle. As with all proper supercars, this means the transmission — most probably a dual-clutch configuration — will be integrated into the rear axle to improve weight distribution.
This actually seems super likely, given how much further back the rear wheel is on the concept. The FD had a lot of overhang with the cat there, 20gal fuel tank, and so on, which gave it it's 50:50 weight distribution.
There is no way the new car will be 50:50 without the transmission in the back, but a manual option seems absolutely assured as well, which makes this sound like bullshit.
>We've also heard Mazda engineers are working on a two-stage turbo system incorporating an “electric turbo assist” function that engages at low rpm, and a standard exhaust-driven turbo that cuts in at higher revs.
>The former will be a capacitor-powered e-turbocharger, making it a hybrid powertrain of sorts, using similar technology to the capacitor-based regenerative braking system in the Mazda6
>“Engineers will employ a capacitor [a unit that stores power and discharges it on demand] to beef up the rotary’s ‘instability’ at low rpm, and when boost pressure rises, a standard turbocharger will engage to keep the flow of power coming,” said our source.
Who is the faggot from /o/ with the boner for hybrid turbos claiming to be this source and spreading this bullshit?
I told you why that technology is unfeasible for a rotary: It will make too much backpressure.
>>13875411
Continuation of stuff from the BS source guy
>Thanks to generous amounts of aluminum and “several carbon-fibre parts” engineers are now experimenting with, the production coupe – which is expected to be up to 200mm shorter than the rangy concept – is due to land with a kerb weight of less than 1400kg, which should produce Porsche 911-style power-to-weight and performance levels.
Carbon fiber usage seems likely to me. Mazda needs experience with it to continue to make lighter, stiffer, and safer cars.
I really wish they'd do the whole A and C pillars plus the roof as a carbon fiber piece. Would look sick, stiffen it, and lower the center of gravity. Fuck I want to look at some carbon fiber A pillars all day in that driver seat. But seems more likely that it'll just be used for some spots in the chassis plus the splitter, skirts, rear diffuser, and maybe wheels.
>1400kg
They said lighter than a Cayman that is 1310k.
This car is 5-15% smaller than a Cayman, so how the fuck can it be close to 1400kg? Rofl.
It's not much larger than the 2300lb MX-5 and it has like a 50lb lighter engine.
Again, more of why this "source close to Mazda" seems like bullshit even if they make good guesses.
>Now that the new ND MX-5 is in showrooms, Mazda is believed to have reassigned engineering and design staff from the roadster to the new RX coupe.
I mean... yeah, probably?
>>13875382
I really hope so. Link?
>>13875411
I heard about the e-turbo assist thing years ago.
>It will make too much backpressure.
How would this happen if the turbo (compressor and turbine) are being nearly instantly accelerated by high amp electric motor? If it's a turbo engine, how little backpressure do you expect it to have?
>>13875411
450 seems doable
>>13875458
>How would this happen if the turbo (compressor and turbine) are being nearly instantly accelerated by high amp electric motor? If it's a turbo engine, how little backpressure do you expect it to have?
Because instead of a wastegate it draws on the turbo to generate electricity at high RPM to fill the caps to discharge at lower RPM and between shifts.
That's how a system like that would work. It wouldn't get enough energy from just regenerative braking to spool the turbo at lower exhaust pressures.
The draw on the compressor shaft at higher RPM to generate electricity creates a ton of backpressure which is very bad for a rotary.
McLaren is currently working on it to have in an actual car, and that's how it works. That's the only way it makes sense to work. But it creates far more exhaust backpressure when you slow down the turbine by drawing against it.
I don't see Mazda betting on a new, complicated system that could create new reliability issues.
A variable geometry turbo would make far more sense and be much simpler and not require so much R&D.
>>13875481
450 would put it at a similar power to weight ratio of the GT-R Nismo and greater than the NSX.
I imagine it'd be a $90k car then which I don't think Mazda would build. Not to mention concerns over warranty.
Leave that to aftermarket.
>>13875456
http://www.motoring.com.au/news/2015/sports/mazda/new-mazda-rx-secrets-revealed-100186 and http://www.carsguide.com.au/car-news/mazda-skyactiv-r-rotary-could-use-compression-ignition-36576
>>13875382
I think one of the most interesting takes is they sound more dedicated now to having something by 2017.
2 weeks ago, what they said was that they don't want to put a timeline on it as they aren't positive that the remaining problems can be engineered out within 2 years.
I'm guessing Mazda has allocated more toward making sure they can meet that deadline given all the hype around the world. They don't want more NSX vaporware.
>>13875509
harnessing pressure to regen the caps at a controlled rate is once thing but
>Because instead of a wastegate
No, wastegates arent going anywhere trust me, think a bit longer about what you're imagining, and you'll get why you still need a wastegate
>>13874294
yea I thought thatd be the case I just wasn't sure if there was a way of telling without them saying so or seeing the engine bay. can you turbo a non turbo rx7 pretty easily or is na a pretty cool/diff option you can still squeeze power out of and it could be a unique build
>>13874136
thanks for the input guys
>>13874282
>>13874478
>>13873846
Lean to drive better. I have one right now and i get 16-17 on a tank that's ALL city driving. Mixed i get 18-19.
you can help by running pre-mix.
>>13875543
No? You really don't need a waste gate with such a system.
The draw from the dynamo slows the compressor down so it never makes too much boost instead of needing a wastegate. There is no waste air to get rid of.
You're thinking of generating power off the excess air. That's silly and less efficient and less useful. You just attach a dynamo to the compressor. Look at how the McLaren system does it as well as the new Audi R18.
The downside is that adding so much resistance to the compressor is like having size too large bearings in the turbo and such. It is harder for exhaust to pass through when it's spinning slower which adds a lot more backpressure.
It's like blowing on a pinwheel. Before it's spun up, the handle of it bends back like plowing against a piece of paper. Once it's spun up, the air you blow easily slides through it.
Putting a dynamo on the compressor forces it to spin slower than is ever optimal whenever it's in energy generating mode.
With piston engines that's not a problem since one thing they really do better is force out exhaust gasses.
>>13875554
>can you turbo a non turbo rx7 pretty easily or is na a pretty cool/diff option you can still squeeze power out of and it could be a unique build
NA is plenty of fun to start with.
The non Turbo FCs don't have a powerful enough drive train to handle much more power and you will have to swap that out.
>>13875558
I had 17 RX-8s, only managed to get 4MPG all highway. My EMD SD90MAC gets 17MPG on the exact same fucking route.
>>13875578
shut up
>>13875579
>The draw from the dynamo slows the compressor down so it never makes too much boost instead of needing a wastegate. There is no waste air to get rid of.
You'll need a WG for full throttle operation, as 450hp or whatever it makes worth of exhaust can't be effectively conveyed through the turbine scroll, much less one with an impeded turbine. The 'dynamo' cannot always provide resistance (which when used as boost control would mean murder to exhaust flow through the scroll).
One could argue that wasting resistor loads could eat up the excess energy generated by controlling boost by slowing the turbine and aside from that being a ridiculous implementation, it still doesn't solve the problem of extremely restricted exhaust flow at full output and perhaps torching turbine wheel
>>13875580
The rotary gods smile down on me fagot, can you say the same?
>>13875642
>no bread
>no sale
>>13875628
Yeah, in such case, in 450hp (like I said, I seriously doubt it'll be 450hp. 320-350 is more likely), you'd still need one since you'll end up charging the caps to full and not want to have too much back pressure when you can use a wastegate instead.
Or you know, VGT to open up the vanes and just let the exhaust right through...
But like I said, I think using that system on rotary is a bad idea and there are better ideas. I think that "source close to Mazda" is bullshit.
Mazda isn't even using that system in their racing currently. If they were, I might believe it more.
>>13875597
i know a bunch of guys that do it, everyone says it helps.
>>13875580
>EMD SD90MAC
Those things are monsters.
> foamerfag detected
I swear I don't l...like trains, I just know train things.
>>13867859
>An afternoon project
Let's be honest though, it will usually end up taking longer than just an afternoon. It would be pretty inconvenient needing to spend an entire full weekend fixing it, maybe even two if you take breaks. For those who don't have the tools, time, or space to just rip an engine out, that inconvenience becomes a big issue.
>>13875579
>The non Turbo FCs don't have a powerful enough drive train to handle much more power and you will have to swap that out.
It can take stock powers or more just fine. Aaron Cake was running a n/a drive train all the way to around 400whp, then he swapped it out. I think he blew a transmission. After 300whp it is a time bomb, but it should hold pretty well before that.
>>13875432
>>13875411
1400kg doesn't seem right at all. Goal is lighter than a Cayman, it's smaller than a Cayman, has a lighter engine than a Cayman, will have a more stripped interior, and use carbon fiber and aluminum. I would bet 1300kg at the very most.
450hp is not going to happen either, unless they make it like a 90k car. The old one was priced around a Corvette and 968 (90s entry level Porsche like the Cayman). In Japan, they were even cheaper. There were some in Japan that cost under 3 million yen even, which is 25k usd. At 450hp and 2800lbs it has the same power to weight as a GTR and NSX. I would expect closer to 350hp.
The transmission thing sounds unlikely, considering I highly doubt it will be sold without a manual transmission. 50:50 weight distribution should be easy to achieve, FRS and Miata are 50:50 as well. So was the Rx8 and all the old Rx7s. Shouldn't be an issue.
Electric turbocharger sounds unlikely, it is a very advanced technology only used in F1 cars right now. Of course it is very possible, but we haven't even seen it in super cars yet. If Mazda brought this to any car, it would be a game changer.
HCCI sounds likely for future Mazda cars, but not the rotary.
>>13875914
Like I said, those particular things sound like BS and were from "source close to Mazda" and not actual Mazda engineers like some of the others.
>>13867606
Lmao ur wrong tho
>>13867363
What IF we charged the housing and dorito and effectively turn them into magnets. Then make the rotor tips similar polarity as the housing to create magnetic seals of repelling force to separate shit.
>>13876125
In order for magnets to seperate shit, the shit you're seperating has to be magnetic too. Good luck passing emissions when you have tiny magnetic metal bits in solution in your fuel.
>>13875382
>Previous rotary engines have also been compromised by the need to locate the spark plug outside the combustion chamber to allow the rotor to sweep past, but Fujiwara confirms this has been solved for the SkyActiv-R.
Maybe they fit on pistons that are located where the spark plugs normally are, and they slide the spark plug into the combustion chamber when they fire.
>>13876404
>add pistons to rotary
>this kills the dorito
>>13867502
This my GSL-SE went 217k and then a coolant seal went still had compression
>>13867398
I know rite!?! Some pistons rings have only lasted 2 miles plus on semi trucks. #stopthehorror
>>13867363
Get off the boost. Seriously. Boost goes in, seals go out. You'll think I'm a wanker for saying "less power=better", but the N/A 13Bs from the FC are fucking bulletproof.
>>13875642
That's actually pretty close to what I get on my FC as well. Full tank will get me anywhere between 200-300km depending on how much of a lead foot I have that week.
>>13867720
>unless you're not a pussy
fix'd
>>13867659
You mean all of them?
>>13867780
It melts cats and mufflers shit comes out at like 2k degrees
>>13873883
The emissions standards kill those cars
>>13867363
What are the apex seals made of?
>>13876404
Haha. Maybe. More moving parts and point of failure, though.
It could mean laser ignition. But it's still ideal to have something not recessed because a bit of combustion gasses roll back through that gap.
>>13877850
Ceramic or aluminum+carbon.
>>13867551
This. NA rotaries have lolnotorque. Ever look at the specs on an RX-8? Ouch.
Super cool car and looks sweet, but that's where it ends. It's expected to have more maintenance for higher performance cars, but RX-8s don't have that, so...
Had a guy in HS that always talked about his FB RX-7. He used to brag about how fast it was, but any time we'd ask him to see the car he'd say, "my dad and i are fixing it." I ahve no doubt he had one, because the motherfucker was never running, haha
>>13878274
159 lb-ft for a 2.6l isn't that bad. It's roughly the same that most 2.5l non-DI engines had at the time.
An NA 1.6x with the new features would probably have closer to 230lb-ft of torque.
>He used to brag about how fast it was, but any time we'd ask him to see the car he'd say, "my dad and i are fixing it."
Yeah whatever. A rebuild and swap on the FB only takes a weekend. They were just lazy and incompetent.
>>13878307
159lbft is the same as the 2 litre Clio at the time.
A 1.6 would be lucky to hit 200lbft.
And unless they do something radical like liquid piston it won't meet emissions.
>>13878315
They are changing a lot. Read what their engineers have said?
If there was no possibility of meeting the 130 g/km emissions, they wouldn't even be trying. Do you think you're smarter than the 50 engineers working on it and that they're all hopeless idiots, really?
10 years ago, lots of cars had around 250 g/km of emissions.
Before the Renesis came out, people said meeting those emissions was impossible as well, and they changed far lower things to meet them than the 16x is changing.
There's really not anything super complicated about meeting the emissions. You make fuel burn more cleanly which also increases torque.
>>13878430
>There's really not anything super complicated about meeting the emissions. You make fuel burn more cleanly which also increases torque.
Except this is a rotary engine. Its what mazda engineers fuck around with in their spare time. The 16X was a fucking dog when they first tested it almost a decade ago and was shelved. What sort of magical miracle they have come up with remains to be seen.
And I doubt DI is going to be the savior. Fuck, all the carboning problems that regular piston engines have with DI, I wonder if it would be even worse on a rotary.
>>13878274
>relatively low powered, high revving engines dont lots of torque
nice observation
>>13878430
>There's really not anything super complicated about meeting the emissions. You make fuel burn more cleanly which also increases torque.
oh wow looks like you've cracked it, why don't you email mazda asap
>Read what their engineers have said?
they have said nothing substantial or specific, just vague statements of intent or desire.
i remember when a bmw engineering boss said they'd never use turbos...
you know nothing of what they are doing or what breakthrough they have achieved, but you are speaking with the confidence as if you have seen the engine running and performing as it should.
>>13867363
it's a damn shame I won't be able to afford the god machine they have coming out until 5 years down the line. I was very impressed with their showing at the tokyo auto show.
>>13867446
This. Seriously. I know it sounds nutty but its true.
>>13875810
I'd just like to mention that Aaron cake is fucking awesome.
>>13878437
>Except this is a rotary engine. Its what mazda engineers fuck around with in their spare time. The 16X was a fucking dog when they first tested it almost a decade ago and was shelved. What sort of magical miracle they have come up with remains to be seen.
Mazda and their engineershas met all their promises so far the past 5 years. Why would they lie this time?
You're just cynical and hate nice things.
>>13878769
they haven't made any promises
>>13875642
>>13870140
>>13870154
here is a non bullshit version
>>13878769
>The 16X was a fucking dog when they first tested it almost a decade ago and was shelved.
I'm dying to hear the 'story' behind this one.What breed of dog did it transform into etc etc
>>13879226
Sweet, saved.
