Learning from Mistakes I have Made Building Rotary Engines So You Can Do it Right The First Time

[@mobmentality_]

You have no idea how essential your channel is. I’m learning so much and plan ok tackling this myself in the future. I genuinely appreciate all the knowledge you give. Thank you!

[@arcrotaryengineering7156]

Use a set of old apex seals in place when your stacking.. Leave the top facing corner seals and springs out.. Sit rotors down then pull old apex seals out and install new. 👍Then you won't have to worry about corner seals moving around. Yip only remove one apex at a time. Another good tip is to clamp the housings down as you go. This stops the water retention o rings from getting pinched. Especially if you use vasolone which expands rubber. Use hylomar instead

[@benbradshaw29]

I got my 12A from Oklahoma, but it's too heavy for me to lift out of the trunk of my ford fiesta. So I'm just driving around with it till I can round up some strong friends.

[@RADPotential]

Hell yea!!

[@jo-qp7mz]

I lifted a rx8 engine into my f350 4x4 took 3 people and it sucked! Definitely wish I had 4 lol or a lower truck

[@benjaminwilliams3402]

Built my first 12a the other day. Started with the wrong plate. Got to the top and doh! Won’t do that again 😂. Other than that went pretty smooth. 105 to 110psi compression test. 250km in, its still running🍿. Thank you Rad Potential🤟

[@RADPotential]

Heck yea man!!!! Could probably just flip that over right? And get the tension bolts in? Did you end up taking it back apart?

[@benjaminwilliams3402]

Yeah took it apart. Good practice lol. No engine stand. Just built off 10l bucket! Will invest in one now tho to make next time a little easier. You are an inspiration man! Keep up the good work! Love your honesty in the vids 👌

[@guitariste47]

Do you find 12 a engine parts easily ?

[@HydraHut]

I be breaking shit al the time but recently. I bought a fiero with a bad head gasket, bad enough when I took the head off most of the cylinders had anti freeze in them. Replaced the head gasket, and it was smoking worse than before I "fixed" it. I said screw, i'm driving it, it's probably just got a lot of moisture build up in the exhaust I need to get out. Crop dusted my neighborhood a couple times and it still looked like a vape convention. So I bore scoped through the spark plug holes to check if i maybe was still getting water in, thought I saw a hole in one of my pistons. Came up with this elaborate reason why my valve must have stuck and bit the piston. Couple weeks later I finally pulled the head back off, everything was perfectly fine - i had just neglected to change the valve seals in the head so it was pouring oil onto my pistons.

[@wthomason]

Were you able to find a PDF of the layout on your wall? It would be super beneficial to the viewers that are coming into this blind. Thank you for all you have put effort into!

[@Buccafurno]

Your videos are RAD 🤙🏼 I have been watching them and learning allot. Just picked up a 88 T2 it needs work but I’m super pumped to have a rotary.

[@RandyAugustus]

Talk to us about balancing the rotors. How do you know if you need to do it?

[@malabo2349]

I pulled my engine apart changed my control oil seals thanks to you

[@yeetyah1114]

Thanks man I needed this I am rebuilding my S4 6 port soon and it's going to be my first time. I already messaged you on insta for a few extra tips, keep posting man it's helpful and good content

[@uselessoutdoorsman2826]

Thanks for another good video man!

[@mattmartinez3298]

I had a s5 13b n/a someone put the timing gear on backwards. When it detonated it bent the coolant groove out on the center iron.

[@theTIR3guy]

Where can I find the pdf file for specs and procedures on setting up seals and Tolerances. a 04 rx8. Thanks for your videos.

[@trackmonster157]

I’m planning on buying a rx8 in the near future, in case I get one that needs a rebuild. Do you recommend just Mazda original engine parts?

[@bobdavis2807]

what apex seals do you like

[@ec62229]

First 12a I built I switched the rotors around front in rear an rear in front. 🤦‍♂️

[@rx7rocket]

Where can we get that poster?

[@psychicer5022]

Man i remember helping my friend rebuild his rx8. we put the eshaft backwards and realized when it was time to add flywheel unfortunately it all ended when he tightned an oil injector without the line and the engine wouldnt turn over. Took it appart and saw the bump on the housing haha man that was the worst

[@RADPotential]

dang! i Didn't realize you could do that with an oil injector!!!!

[@psychicer5022]

@@RADPotential since the oil line is also a spacer, it never occured to us as it was tightened down with force after it initially stopped😅

[@tylerdurden7067]

I have a really dumb question. So I’ve watched 2 dozen videos on how to rebuild a rotary but in one video you said something about just doing coolant seals being easier because you didn’t have to clearance the side seals, etc. Won’t all that stuff come loose or fall out when you start to take the sections apart?

[@RADPotential]

so if you just have a coolant seal issue, you can disassemble the engine, note every seals location so you put it back EXACTLY how you took it apart, IE all the tolerances will be how they were. Replace the coolant seals as you re-assemble the engine. It is a bit tedious to keep track of everything as you disassemble it, but not too bad.

[@rx8tom]

Do you port your engines yourself? What tools would you recommend? I have a dremel but I probably need some better bits. Planning on bridgeporting my rx8 after I experiment on a few junk irons.

[@RADPotential]

yep I do my own porting, I use an air grinder, some good carbide bits, and then an electric dremel for the tight bridges and stone cleanup after. kzbin.info/www/bejne/joGmgHZ_btmrfMk

[@DudeItsRobert]

Do you happen to have a pdf or some type of printable file of your rotary engine tips on the wall?

[@RADPotential]

I'm not sure. I can make one again

[@DudeItsRobert]

@@RADPotential I would greatly appreciate it and it would probably help alot of other viewers as well

[@getpumpedheatpumps2273]

My 13b bp n/a new build has smoke constantly coming out of the breather on the oil neck and after running for 10mins the radiator overflow with fill and water come out of it. Also a lot of smoke from the exhaust. I’m thinking oil control rings may not be in right and maybe blow by past side seals? Any help would be amazing. Thanks

[@RADPotential]

If it's pressurizing the coolant system. I'd start with coolant seals. What does the smoke smell like?

[@getpumpedheatpumps2273]

@@RADPotential Thanks. When I built it I did notice the wall on the housing by the coolant seal, in the compression area, had pitting and didn't look amazing. I'm thinking its the spot were pressure is leaking. Big sad!. The smoke smells sweet and is white. Its been hard to start as a fresh build and I've had to pour fuel down the webber to get it to start.

[@davidhusband5022]

you are incorrect about that gear not doing anything on the series 1 rx8. it drives the oil metering pump, as it does on all engines.

[@RADPotential]

Yea I realized that when I filmed it. I added some text on the screen to clarify. Thank you!!

[@Carlos.Rivera]

Do you pour engine oil in the housings before rotate the assembled engine?

[@RADPotential]

Nope, I have grease on the rotor seals. It's a bit less messy.

[@Carlos.Rivera]

@@RADPotential gotcha, make sense. What about side seals? I really struggling on clearance wise

[@ve2430]

You are still on the original rx8 motor?

[@RADPotential]

The Green rx8 has a junkyard rx8 engine in it. I dont know how many miles are on it. But it's an original built mazda engine

[@ve2430]

@@RADPotential nice. How did you know the junkyard rx8 motor was good? Shot in the dark?

[@RADPotential]

came out of a car that the Clutch had exploded and damaged the rear iron, and also the bell housing. made 90 psi of compression when I installed it.

[@ve2430]

@@RADPotential so the rear iron is still damaged and you're able to drive around like that?