CNC Porting by Rotaryengine.com

[@danlearned9728]

This is a thing of beauty. A while back was working as head mech/crew chief for 2 SCCA GT2/GT3 Mazdas. Became friends with 3 of the best West coast rotary engine builders including Daryl Drummond, the contract builder for the 1 gen Formula Mazda/Star Mazda cars. Seeing this reminds me of the many hours of meticulous effort that goes into building a strong, reliable rotary engine. A momentary slip of the grinder can ruin a port or housing but your CNC work alleviates that. I like the final blending and manifold matching is left to the owner saving time and possible mistakes of the critical details. Nice work. Would be interesting to see the M code for this.

[@rx7specialties203]

Daryl is a close associate of mine. Love his work ethics too!!

[@alexcrummell8909]

This process just changed the porting game big time. You guys are badass.

[@rx7specialties203]

Thanks Alex...glad you liked it

[@T1000AX]

love how that bridgeport and notch lined up perfectly

[@Matty.Hill_87]

Mad how precise it is

[@Dollsofgod]

Great services you guys are offering. I'll have to give you a call before I rebuild.

[@rx7specialties203]

We'd appreciate that

[@edwinrodriguez-gs8cv]

Daamn guys it is obvious that doing this type of job manually is never going to be soooouu perfect than doing it with machines and its program that it programmed in it..congrats for the 110% perfect job on these housings and ports on the irons,there isnt nothing that compares to these masterpieces guy...nothing...👍👍👍👍someday iIll do this job on my fc3s turbo II its worth it😀

[@racrx7]

How does this BP effect apex and corner seal longevity? Doubtful I would ever go this extreme on my 7, but just curious. Great vid, as always!! 👍🏻

[@craignielson6605]

Any chance of doing a vid on j porting , it’s a popular port here in Australia, I have a 84 rx7 12a j port

[@melvinmendez8831]

Great work and explanation. Thank you.

[@Born_Stellar]

Do you guys do peripheral porting as well?

[@HarelDZL]

Damn....dat notch.......its too satisfying....

[@Nikkuuu69]

I'm absolutely loving the passion and precision you guys are showing. Is this the type of service that is suitable for hobbyists too? Or mainly for racing applications where cost is less of a requirement? I'm from Europe, and I'd like to know if you guys often handle parts from EU customers, because of the shipping and all... Keep it up :)

[@rx7specialties203]

We do but you are correct. Anyone who send from over seas will suffer the high costs of shipping. Most customers who do send from far away use our Fed Ex air discount. We get 65% off so although its still a bit of $ it softens the blow substantially

[@Nikkuuu69]

Zat al naar JT performance te kijken ;) thanks!

[@jamestruong994]

You just got yourself a new customer

[@rx7specialties203]

good to hear

[@CrazyCat229]

Do you have a video that explains the differences of bridgeporting vs p porting etc?

[@pprotory]

I hope you chamfered the edges of those ports so they don't cut the corner seals.

[@marklawrence6678]

When you do the bridge port in conjunction with the housing being cut as well. You would need to use 1 piece seals?

[@rx7specialties203]

Not on a half bridge because you can easily position the lose end of the apex seal away from the notch. In the case of a full bridge it is a good idea to use a 1 pc seals....or we can do a narrower bridge port on the primaries and skip the notch on the rotor housing.

[@Dagr8soldjer]

Please tell me you do this for overseas customers? If not I hope there are rotary specialists offering this in the UK. Trying to build a naturally aspirated 13B MSP engine with power that most people say is unattainable.

[@rx7specialties203]

We provide our services world wide

[@RotartMedia]

The amount of money on that shelf

[@josephacker5716]

Whats the difference between bridgeport, street port, and peripheral port?

[@RotaryCrossType7]

Why did you make the bridge so small? Is that a half bridge? Or was it for demonstration purposes only?

[@rx7specialties203]

We do this on all high boost engines to keep EGT's low It also allows for decent manifold vacuum and a good idle and better down low torque

[@RotaryCrossType7]

@@rx7specialties203 if I brought you guys a 12a and wanted lots of na. Power but still wanted to daily drive and track drive what would I be looking at for idle, and power? And would you raise my redline?

[@ivanrivera407]

AWESOME JOB GUYS ABSOLUTELY BEATIFUL👍

[@rx7specialties203]

Thankyou

[@thatnerdgui3496]

Have you guys done or though about doing 3rd gen engines with the RX-8 front plate so you can have all the OEM functionalities of the car while having a more reliable and powerful engine?

[@rx7specialties203]

We offer them yes. Its just that the engine is only a small part of the conversion process. We do supply all necessary components for this conversion

[@wiliss3670]

I have an rx8 which come to the end of its first life.. looking for someone of good quality and character to rebuild... any suggestions..

[@macwitt8788]

How much would it cost roughly for an RX-8 bridgeport?

[@rx7specialties203]

Bridge port does not respond the same way as it does on Peripheral port exhaust engines. Its not something we offer or recommend. We offer CNC street ported Renesis engines. For pricing please email us

[@markbell5483]

Do you have a website?

[@jerrycatala7802]

I'm new on this I need done everything

[@trevernunez9177]

What are the gains/benefits of porting a rx8?

[@rx7specialties203]

Watch our renesis porting video

[@RotaryCrossType7]

I'm gonna guess off the top of my head.... horsepower, torque, cooling, and exhaust extraction. But above all Fun levels go through the roof.

[@hoost3056]

Beautiful work, what kind of power and torque numbers can you expect on a 13B utilizing the CNC street port ( no other hand work, just the machine work ) NA or turbo?

[@rx7specialties203]

This really depends on the turbo you are using for turbo and what intake and EMS you use for NA. I can promise you that this process will yield the maximum gains though.

[@blairastleford390]

Hey, I'm curious if you can tell me how much of a gain is to be expected from an extended port 6port rx8, running a intake and header back exhaust, & Cobb accessPORT

[@rx7specialties203]

Extend port doesnt really apply to RX8...however we have a new CNC Renesis exhaust port. You can check out this video if you susbscribe it will be out very soon. This is the most beneficial porting one can do on any RX8 engine.

[@blairastleford390]

RX7 Specialties thanks for the tip, I gotta say I'm impressed with the quality of work you guys do, and the fact that you show the whole process of your porting, and builds just goes to show the integrity of your company. Ive watched all of, and will continue to watch your videos, especially since I'm new to the msp. All my rotary experience has been with the older models.

[@jerrycatala7802]

Price for that

[@robertobagatti6709]

Good afternoon! Do you make that service with bridge for 6 port hp Rx8? When yes, do you no the cost with your Fedex shipping from and to Poland

[@rx7specialties203]

We do not. RX8 engine is not a good candidate for bridge porting. The ECU does not respond well to the overlap and low manifold vacuum and there is a trade off between power gains (which are minimal) vs poor idle and throttle response

[@goldfishman2]

about how much would shipping irons out for porting if i live in the midwest usa

[@rx7specialties203]

Please email for all price quotations

[@antoniomonterroso9926]

Y esas cosas todas cuadras funciónan?

[@josega6338]

GR8 job!

[@ATLRIOT]

How much porting can be done by hand? Building a Lemons 24 RX8 so budget is none existent but I can do unlimited labor. Looking for options since I have to tear down the motor anyways. Gotta try to make it last as we are running laps for charity donations to Saint Jude’s Children’s hospital.

[@rx7specialties203]

Porting is traditionally done in full by hand so yes you can do all of it yourself if you have the time, the tools and a steady hand

[@pittassavvas7512]

The outside of the bridge and the coolent seal is to close, doomsday isn't far. Extended port is the best way to go, like they say, if the bridge is near, so is disaster.

[@junito7474]

Beautiful job

[@rx7specialties203]

good to hear

[@juliusburriss3496]

Awesome! Thanks for sharing.

[@rx7specialties203]

you’re welcome

[@rotaryperformancemazda]

Did apex seals from one piece?

[@ValentineC137]

Yes, but actually no

[@omargomez9177]

Where are you guys located

[@rx7specialties203]

Calgary, AB, but we receive and ship all over the world

[@RotaryCrossType7]

@@rx7specialties203 oh shit you guys are my neighbors and I didnt even know it.

[@andersanders845]

Awsome!

[@joshshift]

looks awesome

[@rx7specialties203]

Was just for you Josh!!

[@joshshift]

i knew it!

[@JoseMiguelDiazJr]

just wow

[@RobertKohut]

Nice!!

[@isaackoala1]

Email?

[@rx7specialties203]

All contact info is at the end of each video (=

[@miltongimenez45]

The furture is here 🤔👌

[@phoneuser3569]

5 axis should not need any hand work.

[@rx7specialties203]

Correct however, most CNC machines do not have enough Z height to stand up the housing on its end. Secondly, the port entrances vary so youd need a jig that can be clocked to diff angles. Lastly, there are way too many different runner sizes to have programs for every production engine. I am working on full CNC for FD engine for starters as I DO have the Z height....but its a ton of programming and not as easy as your statement is