Real Power Gains For Your Renesis Engine
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- เผยแพร่เมื่อ 21 มี.ค. 2018
- This is a short video which demonstrates the CNC exhaust porting that REC has developed for all Renesis engines. 50% off promo code within. For more CNC porting click here th-cam.com/users/edit?o=U&vide...
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this dude has a rotary tattoo, i trust him with my life
Dude knows what hes talking about, he's got a tattoo of a freaking rotor man.
When I saw that tattoo I knew guy was for real!!!
Facts!
@@jo-qp7mz i got that impression after a few minutes of listenig to him. Then i saw him, machining it without lubrication and wipeing away flakes. It's only aluminium, but it's still hard enough to scratcht itself, it might be easy to cut, but it's also very sensitive to heat and warps like crazy when it get's to hot. I wouldn't send my car's engine to him. He seems to know, what he is talking about, but i don't like his workstyle.
@@gehtdianschasau8372 it's cast iron... He is most likely machining without coolant for demonstration purposes only.
@@gehtdianschasau8372 the moment you said it was aluminium you and your argument lost any credibility.
I love that rotor tattoo! Magic spinning Doritos!!! You guys are geniuses and very précis, that is what makes it worth the money!
I'm planning on getting an RX-8 one day and adding a little pep in its step was relatively difficult for the Renesis, especially its side exhaust ports. This new exhaust porting sounds like the RX-8 can finally see some real power gains like the RX-7 and not worry about issues of heat, back pressure, and early engine death with modifying the exhaust. I'm thinking this will add about 15 or maybe 20 more horsepower than the stock setup
Thank you to your shop for doing the streetport and work on my turbo RX8 I hope to work with you all in future ;
I think that's my car, just had that done by them and then this is posted... awesome...
LOL because you are the only person who ran renesis irons through them right? Fuck outta here bubs hahaha
DrWoodStien they only do about 5 of these a month. I'd just about guarantee it was his engine
Better yet, where are the dyno charts? How'd the tuning go?
How much did the build wind up costing with the port?
Got any videos of your car running ?
are you going to Post A Video of Dyno Runs from a engine like this that you have ported ?
Very much needed
With this reduction of heat will it make the silicone coolant seal last any longer? Iv been through 3 motors due to that seal failure or thinning out
yep, carbon in rx8 exhaust port is a major issue.
Yeah. This is still on my shopping list. Some day.
I'm curious, for street use do you like the older RX-7 intake ports or the 6-port RX-8 intake ports better?
awesome video very interesting cheers
Could this porting pass the Euro 4 emisions
if yes this whould be awsome if no could it be possible when upgrading the exaust with more cat converters?
that Is epic !!!!!! once im ready to port my msp ill send the Irons to you . ill have the engine rebuilt here in Nz though !!!
I'm sure green brother or ppre would do something similar
I use my 6 Port RX-8 as my Daily for now. So my biggest concern is Gas Mileage. Will this Exhaust Porting affect that? Can i run the car with the stock tune?
Another brilliant video, well explained and showing clear experience. Your explanation of what part the carbon buildup plays is also of particular merit. I've heard of older rx8 engines failing for unclear reasons. Maybe some of those suffered a chunk of carbon belting around also. One question though, wouldn't the carbon piece simply breakup on impact with the rotor or seal?
You question and comments are excellent. In fact carbon is not just a killer in these engines but is THE killer in these engines. To directly answer your question. NO the carbon chunks that get caught up between rotor and side housings and rotor tips and rotor housings is catastrophic. The seals will get smashed time and time again. See it all the time
@@rx7specialties203 I run A set up on my 4 wheeler that keeps my spark plug from fouling. As it burns oil and would normally foul every 3 or 4 days without it. Also allows the use of the coldest spark plug rating on all of my vehicles.
@@rx7specialties203 THE killer in these engines is oil starvation
Wish I saw this before I just finished my rebuild - maybe after this track season! How does beautiful porting sound? Some videos would be awesome!
ConnorLug it makes me wonder as well . de sleving and that port must have a crisp sound and brilliant power Gains !!!!
I know this is old, but what kinda of reliability changes can we expect with this kind of CNC Exhuast port?
Love the tattoo, lol got a similar one.
Guess I know where I’m sending my engine
Have you any videos of the 4 port Renisis intake porting ?
Nice!!
Nice. Good work. I'm looking for torque specs and tightening procedure for the 18 block bolts for a 6 port 13b renesis engine. Thanks!
happy to help just email
after porting an RX8 , what would be the iron thickness at the thinest part of porting?
would there be metal brake down in that port?
Not at all
Why not chamfer the edges? Is it not needed?
is there a way to close the side exhaust port reliably and just use gsle housings instead?
I don’t think anyone can answer that question regarding reliability since it’s seldom been done as of yet, But I’d love to use REPU, rx4, rx5 or GSLSE housings without side ports as well (which also is unknown as far as being beneficial or not either)
ive only seen 2 ways of doing it on is a the puerto rican way of just fillin them with high temp jb weld but that doesnt expand with the metal and fails within a couple thousand miles and it seems that ric shaw just covers them up with the headers but idk how a pocket of hot exhaust gasses effect the side seals
From what I remember and read, oem rx-8 2mm apex seals arn't a fan of peripheral ports, unless you use hardened seals.
theres a bunch of shops that can cut the rotors to fit rx7 seals so that wont be a problem
Hallo. Is it necessary to port also the middle iron or I can do only the front and the rear Irons?
The exhaust ports are all restrictive...do both
Now if I were to boost mine would doing an intake port and exhaust port do anything or should I stick with exhaust port
Good question...in fact the intake port we offer does help more so in turbo application
Did you do this job only in the front and the rear iron or in all three? Did this effect the compression?
All 3. No effect on compression
I’m actually curious to see how long that iron will last? It shaved off a little too close for comfort on that water jacket. Whether or not will eventually cause cooling issues
a bit old thread. but if it did give way Id lay a bead and not toss the iron.
Is this useful for a 4 port too?
Are you guys able to add a third spark plug into the 13 housings as well similar to the 787b engine? That's something I'm very interested in doing to increase combustion efficiency with MSD and Brisk spark plugs and accurately control combustion timing with an ecu. The other thing I wanted to do was use the fd rotor housings with rx8 side housings that way I can keep a nice low loopy idle for better throttle response but increase exhaust flow at higher rpm. Can I also keep a racing beat street port or it would interfere with the exhaust port?
Also want to make the rx8 rotors compatible with use of ceramic seals once I get a tune with ethanol free gas.I then plan to set the engine a certain way patent it and make the fastest nurburgring lap for world recognition of the rotary.
That sound awesome! Tony Stark can be the lead engineer with Steve Rogers at the wheel!
How about you get a rx7 first or maybe a car... It's good to dream up a build but don't ask stupid questionsuntil you at least have parts of puzzle or like I said at first a car at least
2 rotor engine = 6 combustion chambers. 654cc displaced per each combustion chamber trough its 4 stroke Otto cycle.
654cc x 6 = 3924cc (3.9L) @ 1080° eccentric shaft rotation.
True displacement for 13B / 13B Renesis per its real Thermodynamic Cicle
No.
26lr 13b glenn East Coast rota misfits Australia do your research on eccentric shaft speed per revolution 😂
Once you have done the exhaust porting do you change the exhaust sleave . Or just remove it all together
Also curious
you can NOT remove that sleeve. it is there to protect against metal warping and cracking. i had a first gen 7 and when they rebuilt the engine they forgot to put the protection sleeves back into the thermal reactor and after 12k one of them cracked and sent coolant back into the engine and the exhaust. sux too cus i used to love driving that car.
Hello! I would like to buy an Rx-8 myself, but I feel like the engine life, and fuel consumption can be an issue.
Can the Rx-8 be used as a daily driver? Can this kind of porting aid fuel usage and improve engine life? Can Rx-8 be turbocharged without low compression rotors? How can you make more power without agressive porting? Thanks for your answer.
David
David you need to be committed to this relationship(relationship with car). First if you want a rx8 you can NOT expect good gas mileage and the engine life is 60,000-120,000 miles depends on if you maintain it correctly(example:shut down procedure and burning away the carbon after a start especially after a cold start).Second yes it can if its completely stock no bridge port(if you have a bridge port is significantly reduces drivability).Third no definitely not the fuel millage is worse(say you get 18 highway right now if you bridge port it you might get 12-15 mpg)and it depends on how you treat it but typically it reduces engine life.Forth it can but the reliability is iffy and you have a higher chance of premature apex seal failure.Fifth is simple street port or half bridge(if you want better drivability and mpg compared to a full bridge port go with street port).
@@Ben-rm9jx Don't bother w/ a bridge port on a Renesis engine, a good street port is the way to go. I'm talking about intake porting btw. For exhaust porting, what u saw in this video is prolly the best porting service available anywhere that I've seen.
Yes, the RX8 can totally be daily driven. The porting shown in this video will definitely improve engine life, but i dunno about fuel usage. And yes the RX8 can be turbocharged using the stock 10.0:1 compression rotors, however don't expect to go above 1 bar of boost. Slapping on a turbo will yield anywhere from 300-400hp usually.
@@Staf00plz my dad and I have decided to only do a very mild port job. At most extending the port by a few mm.
What if you only modified the exhaust port? What gain would that provide?
We do offer just exhaust porting. In fact its the number 1 recommended upgrade. Its not done solely for flow, it helps get the heat out also. Its more of a reliability mod then a performance mod
Is this not the same as street porting?
I live in Malaysia, gonna cost a fortune just for the shipping fee tbh 😂
I'm surprised Mazda allowed this design flaw to occur in regard to carbon build up.
MrStoneycool69 imagine if they done this port from the start !!!!!! the Hp will be up to the 300hp mark
It may not had passed emissions......
When you think about it, it shouldn't surprise you at all. The answers to fixing the rotary have been out there. From repositioning the spark plugs, chamber shapes, port shapes, etc. It's all about getting the engine to stop fighting itself. Excess carbon build up is a byproduct of poor combustion.
Yes, one of the drawbacks of the rotary engine.
@@hoost3056 Really? The solutions are there? Then why didn’t Mazda implement them?
Soooo this exhaust modification boosts the power and breathing of the rx8 engine? by how much approximately? Very interesting
Mazda focuses heavily on emissions also...especially for the Japan market. The ports are not opened enough for max power so this is what we are providing.
@@rx7specialties203 can I have your email address?
I'm on the same boat. What are the power gains? Any info at all on that specific information?
The numbers will vary depending on other equipment that the car has. If the engine is coupled with a turbo then the gains will be exponentially higher. The gains will not be noticed much at all unless you have a free flow header exhaust system. At that point the engine can breath so the porting and exhaust system compliment each other. But the curve is not linear, the torque is increased with the exhaust porting alone but again, not as a constant percentage increase. At the peak its around 4-5%, The intake will be noticed on top end mainly and might yield a peak of 17 HP . The beat way to obtain max power / torque is to use an Adaptronics ECU or at minimum a Mazda edit to smooth out the weaker areas . All said, the gains can be quite noticeable. I do suggest that the exhaust porting is a must for reliability reasons more then anything to get the heat out but never plan to do just intake / exhaust porting only to see the highest gains.
How much and where to send? I’ll send the entire car
How many boost can you run now on that engine rx8 ren13b ? After
This port is designed mainly for aspirated engines. Although some of pour customers do run turbo chargers, the port design is not intended to run boost or more boost
What kind of power gains?
motoray69 I look forward to seeing and hearing this ported renisis run . hearing him say 35% power gain . it actually looks like this exhaust port opens earlyer than a perefial port exhaust .
Jason smith 8:05 He claimed the (exhaust) port will "probably" flow 35% better. That's a lot different than a 35% power gain in the engine.
Riley Lammert shit he did too . hahahaha .
well it still sounds 35% better than the orignal Port :p
Very true, I just wish you could get 35% more power out of these engines with exhaust porting alone but unfortunately the only way to gain that kind of power out of these engine is through forced induction. You ever send your plates in?
Riley Lammert so around 327 horse?
Hi all , can i use 100% e85 on an RX8? without damages?
aurel454 you can but you won't see much of a gain out of it besides lower egts not to mention having to stop at a gas station more often and you would need an upgraded fuel system to support the larger amount of fuel that has to be flowed for proper combustion
@@overhazard989 When tuned about 15-20 hp, consumption goes down about 12% overall. RX8 gets bad economy anyway that's not why you buy one. Any rotary making big power is going to get crappy mileage.
@@dj4monie hahaha but the renesis doesn't make big power.
Guys can you make a silicon cap so I can measure if port by hand properly. As in Lithuania Europe. No one cnc rotaries. Unless you provide cnc programme which is impossible I bet
You mean a template?
Would love to get mine rebuilt. How do I get a quote?
contact us by email please
What's ur email so I can send mines in to fam
Got a ? On porting. You only grind the iron not the cast iron right
Not sure I understand your question? The only machining is done on the cast iron surrounding the port
where are you located?
Calgary Canada
But will it BRAAAAAPP
do u have a website or anything so i can send mine out to get ported
Web address and other shop info at the end of each video. If you send us an email we can send packing and shipping instructions
A little water injection setup would solve the carbon issue.
How much does it cost to have this done
Please email for pricing
Does anyone sell pre ported plates?
We do yes
How much is the cnc port job and how much gains to an na rx8?
Please email for pricing
How much do you guys charge to do this if I send you mines?
Shoot us an email for any quotes
$???
Shoot is an email for any quote prices
lol. That eccentric shaft be looking a little "non-eccentric."
I have to re-watch some of the reviews of other people who've ported but i've seen Mazda Trix has their own porting strategy, i've heard reasons or differences on doing a "street" (better air-flow) port and a "bridge" port (more for turbo builds). Did you compare any of these different pieces of information? I'm nowhere near a mechanic or a wankel engineer but I would like to know the pro/cons relating to the different theories in comparison with your more humble approach to the porting (or maybe there is no difference at all). Obviously same guiding theory: open ports, smooth out edges.
Bridge port does not have the same effect on Renesis engines as it does on peripheral exhaust engines. Its a misconception. People thing bridge port is an automatic power gain and a brap idle. All this port does on an RX8 is confuses the ECU with such low manifold vacuum at idle and the top end gains are not nearly as tune able as the side post exhaust timing can not be played with like it can on an RX7 engine. In short we would not compare these ports on a Renesis because we dont suggest bridge port on this engine
@@rx7specialties203 , very interesting, know on your professional opinion, would you swap engines on RX8?, or you can exchange housings from RX7, , my thing is I want a RX8 but the limitations on the renesis makes me wonder RX7 or RX8, I'm from Puerto Rico so I've been seeing my friends building RX 100, 2, 3, 4, 7 all my life while I build Porsche engines, now I'm ready to have my first rotary but watching the RX8 sitting around my friends shops scares me but I like the car, thanks
Do you guys have a phone number/website I could check you guys out at if I want this done on my Rx8? Thanks!
All info is at the end of each video
@@rx7specialties203 a link in the description would help for those of us already trying to click it before the video is over
I know there is turbos to increase air outtake, but couldn't you make something that sucked the exhaust out? Can anyone explain why you couldn't do that?
to answer your latter question, putting energy to suck out the exhaust gases just makes no sense, that s why noone does it. An equal length header with merge collector utilizes the venturi effect and sucks the exhaust gases out(exhaust gas scavenging), problem is that on the renesis the middle exhaust port is shared by both rotors, creating an exhaust pulse overlap which is very bad for exhaust scavenging. Gives around 20 hp more. A bridge port with exhaust overlap also pushes exhaust gases out by sending some of the mixture directly to the exhaust(increases emissions, solution would be direct injection). Problem is, on the renesis the ports dont overlap, by design. Built2Apex claims he ll mill billet side plates that do overlap and are direct injected. Generally the engine is a mess and didnt get as much love as the other 13Bs which is sad. It has so much potential. With some custom milled parts you could easily get reliable 400rwhp, incredible response with pretty much the same emissions.
Hope it helps :)
you guys like doritos as well?
Guess he doesn't like replying in here
Sorry guys.....took a holiday and yeah Im busy...Ill try to do better
i dont trust cnc machines enough
?
So u trust a squishy human meat bag that is prone to error and inconsistencies more than a precise and predictable machine?
Fact: Renesis is junk.
Hey you gotta improve it where you can. There's alot of RX8's out there
The Renesis is actually quite a marvel of engineering. Mazda was able to extract 232bhp out of a N/A 2 rotor while retaining smooth idling, drivability, and cleaner emissions vs any of its predecessors. The porting shown in this video just makes a great engine that much better.
@@Staf00plz And without using a turbo! People keep forgetting that the second most powerful stock rotary engine available in North America wasn't even turbocharged. It made more power than the FC Turbo did.