you forget about semi peripharel port where they combine peripharel port and the side ports these are the ports the drag guys use to make over 1250 rwhp and runs 6 sec in the 1/4 mile
and he is putting down 1000hp in all 3 of his cars... I believe the miata with 26b is up to 1250 or 1300, FD is right around 1200 and the rx8 is 1100... all have 26b engines all tuned for different race limitations.
ok just checked the current figures for the cars... RX8 is 812bhp and the RX7 is 537bhp. all 4 rotar the rx7 is a NA build but they are building it up for a turbo setup.. building it all up first then the turbo(s) will be the last thing put on and yes the mx5 is 1200bhp but it seems he is no longer using it at competition drift level
Missing my 8. More smiles per mile than any car I've ever driven. Did so much canyon digging in that car I'm still smiling 5 years later. Did three cross country trips in it, twice to Florida and once up to Niagara Falls by way of Michigan and always drove non stop gas-n-go. After 35-40 hours of being on the road without sleep, I'd be hallucinating some of the most random stuff but I'd still wish there was more road to go
This video was really interesting. I haven't really looked into rotary's N/A tuning so this was new stuff for me. The tuning methods seemed somewhat similar to 2-stroke engine tuning.
I learned alot from this vid. I've always been a V8 guy but I also love RX2's because one of my mates had one monster port / fuel injected Having a ride in in made me feel like I was on my CR250.. Great little cars !
I have had both rotaries and pistons since I started driving. I hate piston engines, they're like having a girlfriend with no tits and short hair. Fucking lame.
You dont want a rotary. They could hang with piston engines in the late 80's early 90's but after that they were garbage. With today's performance of piston engines there's literally no reason to own a rotary. They are weaker than a 4cyl, they eat gas worse than a V8, and have the reliability of a Ferrari. Rich kid fan boy's who are trying to be 'different' are the only people who think rotaries are worth a damn anymore.
That last white FD really sounded like the 787b. Very, very nice. Is too bad wankel haven't been researched as much as the conventional engine, so we might have had more of them.
The p-port RX7 at the end has a different engine to Mazda's R26B. In the RX7, the rotors have a 180° timing difference, so each pair of rotors has their intake, compression, power and exhaust strokes simultaneously. The Mazda R26B had rotors at 90°, so at any given time each rotor would be performing a different stroke. Mazda's setup decreases the instantaneous torque application when a combustion stroke starts, making their engine 'smoother' due to increased power stroke overlap and less likely to fail due to lower stresses on the eccentric shaft and transmission (or transaxle for the R26B).
Awesome video. Rotary love. I learned a lot about all the ports. Now I'm imagining a rotary with variable port geometry, just like VVT for cars. I know it's possible, but would it be worth the cost.
cool to see that this is not just an other video explaining how a rotatory works, thank you for trying something new. i have a lot of faith and respect for you, keep the good work. (sorry for bad english)
At 1:00, this video is wrong. Porting the rotary does NOT have "basically the same effect as porting piston engine heads". Porting the rotary is far more akin to changing the piston engine camshaft. You are altering exhaust and intake event timing and increasing flow. Though generally not adding huge amounts of CFM, it is more about the timing change unless we are talking about radical ports like peripheral. But porting a piston engine cylinder head does not change intake/exhaust event timing at all, only adding airflow. Confusingly the commentary then continues with correct information saying rotary porting changes intake and exhaust timing. One can also argue at 1:48 that it's not really easy to upgrade stock ports to other types. Oh sure, the actual grinding of the port is fine for someone with experience, but to access those ports means complete engine disassembly. The video also seems to insinuate that only 12As used stock ports at 1:42. Stopped watching after that.
Aaron, I did not say that the rotary porting is the same and only similar to the porting the heads. Listen carefully, I said that it is the same as the head porting, variable valve timing and big cams altogether!
I quote from the video and captions "Engine porting of the Wankel engine has basically the same effect as porting piston engine heads.". The next sentence is "What it does is it changes the intake stroke duration". Which insinuates that porting piston cylinder heads changes the intake stroke duration. It may just be an error in translation but the end result is confusing. I also just noticed that this video doesn't cover rotary exhaust porting at all, which is just as important as intake porting. In bridge porting you also claim that it pushes the rev limit to 8,000 revs at 4:43. Porting has nothing to do with the rev limit of the engine. That is set by mechanical balance as well as whether the engine can be controlled adequately at those speeds. Every rotary up until the S5 RX-7 had an 8K upper redline from the factory. Which was upped to 9K for the S5, then 10K for the RX-8. I just don't like rotary misinformation spread because there certainly is enough of it already.
I stand by my view it is a self-contradictory statement. But perhaps unintentional and just a consequence of translation to English. I keep watching more of the video though. At 6:48, you claim peripheral ported engines cannot idle below 2,000 RPM. Totally untrue.
Hey aaron, Love the Cosmo restoration so far. Good to see you pick yourself up from the robbery and continue working on the car. Keep up the good work.
The last Rx7 that you showed on the video is pure sound, 4 rotor. I wish thy were able by regulation to bring engines like that. Just bring up the unlimited rules of good old times. Keep the safety for pilots but let the rest unlimited...
I own possibly the cleanest ‘05 RX8 in all of Ohio and I REALLY want to Port it with the extended port. I need the BRAAP BRAAP BRAAP in my life! I plan on swapping the stock exhaust and the air intake anyways.
A J port is like a bigger eyebrow that you'd have with a bridge port similar to the pic at 4:37, so it's more aggressive than a Bridge Port allowing for higher RPM, its called a J port because of how close it gets to the water jacket. A Monster port is what's shown at 5:28. It's known as a Monster port because the sheer size of the two heavily modified ports. Monster port engines are known for their short life spans.
you're getting better and better in you're pronatination. keep up the progress! maybe it's an idea that when you have a bridge port. there will be a different manifold mounted where a valve is placed which opened only at a certain RPM. so it will have the peak power. but still be driveable and decent fuel economy?
I'm surprised you didn't mention that the rotary engine was designed and conceived by German engineer Felix Wankel. Wankel received his first patent for the engine in 1929!
Interesting video, I just learned a little more about rotary engine. Actually I'm a fan of it, The sad part is: in my country is a strange and hard to work engine. Anyway, interesting video. Greetings from El Salvador
it was always explained to me that port work on a rotary is the same idea as a cam swap in a piston motor in terms of changing the power band of the motor.
this video was really educational for me, you could do these videos more often since they're pretty fun as well! and mate you're going to reach that 1 million subscriber mark one day :P
yoooo hahaha you used my footage that's sick haha. All I had was headers and a straight pipe to a 3A Racing muffler back then.That was before I blew the coolant seal. But I am going to rebuild with a port and a turbo.
For sure you did some great research, this is amazing! I did not know about those details, probably hidden over the Web, and you found, I guess, most of what you could find. *applause*
I would like to know what a rotary engine failure looks like, or exactly what you mean by "short engine life" of a peripheral ported rotary engine. Specifically, what parts fail and how?
Apex cracks or just fails out of rotor and damages stator( housing) and sideplates. As far as I know, after stator damage you would need to replace it. Or maybe it`s possible to repair it by welding and CNC milling but after it would require recovery of nitride surface. Rotarys are cool, but extremely expensive. Full repair set (before apex crack) of seals, apexes and bolts cost around US$1300. How much would cost repair in case of apex failure is scary to even imagine. If u`re on relatively low budget I`d recommend to stay with piston engines. Wanna lightweightness? Turbo`ed 1.6l can pretty easily achive 300whp. Or if you dont want to mess with turbo check Ford`s Duratek - 2.0l, great aftermarket support and weight of assembled block in range of 130 kg. With ITBs and agressive cams you would get same HP numbers as with ported rotary, and the same 1.5k-2k RPM idle. But it would cost much less to maintain. Or rover K-series 1.8l @ 120kg, Toyota 2zz-ge also very light (both engines was used in Lotus, and those guys love small weight numbers)
El KukS actually with modern apex as long as the failure isn't due to over-revving what usually happens is the apex seal warps causing loss of compression or the water jacket seal fails letting coolant into the engine. You can easily keep maintenance costs down by replacing the seals yourself it's quite easy to do
It's a myth, or misinformation if you'd like to call it that. Peripheral ported engines do not have short life attributed to the peripheral ports. They simply tend to have a shorter life because they are usually built as race engines and run hard to constant high RPMs to take advantage of the porting. All Mazda rotarys until the RX-8 had peripheral exhaust ports. Also way less people have first hand experience with peripheral port engines so they tend to just repeat rumors, assumptions and myths.
Just want to mention that extended ports do not give the famous rough idle. It would still be fairly smooth. Half bridge and full bridge ports are the first ports that give the rough idle
@@apismellifera1000 the renesis doesn't respond well to turbocharging because of it's high compression and the fact that it's literally made to be an n/a motor, not because it's a piece of shit.
Awesome video visio 👌 That 26B is straight jizz! Check out the video of the extended port RX7 with the massive turbo on our channel. That thing was mental to drive!!
damn bro nice video rewiew of one of the Best engine ever the rotary engine sounds so damn loud But the only problem was the reliability but as always good video ;-)
I get it now. The PP is the most power that can be developed in a NA rotary, the amazing sound, highest fuel consumption, higher revs, poor driveability and low lifespan which means the closest to having the engine at its highest before it will blow up. I wish there could be some technological improvement in the rotary where that could be problem could be solved.
Abdul Jabbar Al Hayyan Go for it bro! You'd love it, just make sure you do proper mods to it. Please don't cheap out on mods, buy a proper exhaust system. Aftermarket mid pipes to 3 inches, 3 inch muffler, and exhaust tips, and get a cold air intake. I whole heartily recommend AEM, they are expensive but 100% worth it. Nothing like owning a rotary that actually has airflow. With those mods your RX8 will have "gills" and breathe. You will definitely rep the benefits, my friend! 🙌
Abdul Jabbar Al Hayyan By the way, headers will be a pretty good upgrade as well. But it isn't needed right away, I would definitely recommend a Aftermarket midpipe. High flow muffler like magnaflow works great too! Midpipes go for like $250 on Amazon. 👌
