Broken Rotary engine tear down | fullBOOST 

IF it sticks... then there is an issue.

how'd that turn out?

*Wankel autopsy...*

Damn !!!! That has got to hurt !

How much of that distance is during a burnout?

I know, right! Prob some kind of back- yarder thou... A lot of them on the internet selling their "wares"! 😁

*Well, if you are wasting your time on these pathetic, completely obsolete engines??? You give every real automotive enthusiast a bad name.*

*Shut up Nate... you are no expert. You are nothing but an amateur hack.*

Water seals are in the iron, so it's 2nd gen or later.

+doktorbimmer And here you are, making every post in bold. Pot, meet the kettle. He's African-American.

*Do you buy your oil cooler mounting brackets at Walmart like Nate does too?*

*_Nate when are you going to admit you are gay????_*

"Leak proof compression"? Even with pistons much less rotors and "housings"? And "seals" that are in constant motion and varying "tension" in aluminum "housings" which are not the same as "cylinders" in a piston engine period and IF THEY WERE AND ARE THAT WOULD PROVE ROTARIES ARE "DISPOSABLE" AND NOT "REBUILDABLE" SINCE EACH AND EVERY PISTON ENGINE WITH ALUMINUM CYLINDERS IS "DISPOSABLE" AND AT BEST "REBUILDABLE" ONLY IF AND WHEN IT HAS AN ALUMINUM PISTON AND THE CYLINDER BLOCK IS BORED AND HONED OR REPLACED SUCH AS THE "TOP END" OF 2-STROKE ENGINES? WANT TO KNOW MY THOUGHTS ON YOUR "QUESTION" ABOUT ROTARY "SEALS" BEING SYNONYMOUS WITH PISTON RINGS? MY THOUGHT - I ONLY HAVE ONE - IS THAT ANYONE THAT ASKS THAT QUESTION PROBABLY BELIEVES IN "LEAK-FREE COMPRESSION" AND WHO KNOWS WHAT OTHER MECHANICAL "UNICORNS" AND IS A DREAM "CUSTOMER" FOR 'ROTARY EXPERTS" AND THEIR ROTARY-SPECIFIC "GOODS AND SERVICES" AND SHOULD BY ALL MEANS STICK TO "SIMPLE" AND "EASY TO BUILD" ROTARIES WHERE THE FIRING ORDERS NEVER EXCEED THE NUMBER OF FINGERS ON ONE HAND WITH THEIR THUMB LEFT OVER FOR HITCHING RIDES AND/OR SUCKING WHILE HAVING A GOOD CRY IN THE PRIVACY OF MOM'S BASEMENT WHEN THEIR ROTARY "RACER" NEEDS "REBUILT" EVERY TIME THEIR "TUNE" SOMEHOW "CHANGES" AND "COMPRESSION" DROPS A WHOPPING 5% "COLD" AND SUDDENLY THEIR "SIMPLE" AND "EASY TO BUILD" AND "HIGH PERFORMANCE" AND "HIGH TECH" ROTARY WON'T "RUN RIGHT". OR LEFT. OR FORWARD. OR BACKWARD. AND IT'S ANOTHER "TOW" BACK TO MOM'S HOUSE AND THE INTERNET ROTORHEAD "EXPERTS" AND ALL THEIR "FIXES" FOR A "WEAK" OR "TIRED" OR "WORN OUT" ROTARY THAT NEEDS "REBUILT" MORE OFTEN THAN AN "UPGRADED" AND "TUNED" AND "BIG-BORED" 2-STROKE "DIRT BIKE" USED AND RIDDEN AND TREATED LIKE AN "ENDURO".

maybe apprentice

It's obviously fully sick...

That really varies depending on sll sorts of things bro. It deff shows significant wear

A badrap brap brap brap?😂

*Yeah, Mazda earned a very bad reputation which is why they no longer sell these unreliable engines... Mazda only sells car with reciprocating engines now.*

@Leon Jones *_BULLSHIT!_** That old false urban myth was busted years ago by the NHTSA recall investigation... Mazda stopped producing them because PEOPLE STOPPED BUYING THEM... sales of RX models steadily declined from as early as 1986 and both the RX-7 FD and the RX-8 were major flops that did not sell enough units to turn a profit. Wankel engine have a well earned notorious reputation for poor performance, horrible fuel economy and premature engine failure due to compression loss.*

@Leon Jones *Your childish insults expose you for what you really are... a troll, a liar and a fake... Please stop posting false information and lies.*

@Leon Jones All you got going for is childish insults. Doktor is right. Rotaries are unreliable as fuck.

*Bad design, no longer used or manufactured anywhere in the world because they are inferior to reciprocating engines.*

It is difficult, yes, if both your hands are decapitated.

*True building and dismantling them is easy... the hard part is getting one to last as long as reciprocating engines!*

*True building and dismantling them is easy... the hard part is getting one to last as long as reciprocating engines!*

i see your still getting mum to drive you around

Well, give the owner another 50km and we'll do it all again! Love that legendary rotory reliability! LOL! 😭

@@danielbrealey2924 the quality of the build will be its reliability as shown from the teardown he got lucky with 50km xD

@@TriniRogue LOL- I know what you mean. I'm a qualified mechanic... Build A LOT of engines

That could be part of the issue. I suspect it was thrown together with some pretty junk parts and this 50km story seems a bit suss considering a few obvious signs of age and wear/tear type things. Maybe it wasn't all clean when build and was essentially thrown together with left over parts someone had lying around in someone's shed

*Its pretty obvious by the condition of the outside of the engine and the cleanliness that its did last long enough to even break-in... 50 kilometers and this turd was done.*

*Ringwood Mazda*

No. Just incase it only lasts 50km!!! LOL! 😅That's that legendary rotary reliability we all know and love

Nathan Cooke www.rotaryracecars.com.au

@@BackyardMechanics i.imgur.com/qfZRcJ7.png down for me?

Nathan Cooke I’ll fix it. In the mean time www.mrparts.com.au or facebook.com/RotaryRaceCars

Nathan Cooke back up now

Might not be 100 percent correct, but its to light the fuel/air mixture evenly in the relatively long but narrow combustion chamber, and IIRC each plug is timed separately rather than both igniting at the same time.

@@Moore91 that makes sense. also realized that the case almost creates a "bridge" across the rotor when it is at full compression, almost dividing the rotor so it makes sense to have two plugs firing at slightly different times.

*That is exactly why there are 2 plugs, the combustion chamber essentially divides in two at Top dead center. also, the long flat chamber shape prevents flame propagation from reaching all the areas in the chamber leading to a partial mis-fire condition which reduces power, fuel efficiency and causes high emissions.* *Adding more plugs is only a bandage on a much more serious flaw inherent in the Wankel design... the shape of the Wankel engine does not allow a modern "quench" or high swirl chamber architecture and this is the primary reason why the Wankel engine is obsolete now.*

*Throw that crap engine in the scrap heap and buy an LS engine.*

when did a ls powered car ever win a international 24hr race ?

@@MrShaka1965 The C6R had a few class wins at the 24 hours of Le Mans.

@MrShaka1965 *Chevrolet Small block engine won the 1969 Daytona 24 hours.*

Gaytona is for armatures and for yanks to think its an international comp lol.anyway ;ts not an ls

Lawson Palmer it’s not dirty or blocked, it’s just ‘stained’

*Fundamentally unreliable... obsolete technology that is no longer produced anywhere in the world.*

Very true. And may have been a dry start up

*Premixing a Wankel engine with a functioning injection pump is monumentally stupid... Mazda does not recommend premixing because its dumb...*

you still here.i thought your mum picked you up ages ago

@MrShaka1965 *Have you been down to your local Mazda dealer lately... go check out the new RX models??? **_Lol!!!_*

@@MrShaka1965 don't feed the troll he just sits behind the desk in his basement yelling at his mum to get his fat hand out of the Pringles can.

*Obsolete junk!*

One of the bolts

*Also missing was its compression...*

There was one of those long bolts missing. Basically, when all of those bolts are torqued down, they squeeze all of the housings together like a sandwich. If there's a spot with missing torque, all your gasses and fluid can escape from the resulting gap.

*Most military drones use reciprocating engines now, BRP-Rotax GmbH & Co KG. is world's #1 supplier of UAV and ultra-light engines.*

To actually answer your question, yes, they have been in heavy use for a while now. There are quite a few manufacturers, and their major advantages are fuel economy and much better reliability and durability than reciprocating engines.

*An interesting theory but not one supported by the facts, most of the scam companies selling Wankel UAV engines are defunct now... now that all the shady up-starts are out of business, the real, reliable dependable engine manufacturers have solidified the market place with superior reciprocating engines.*

If your engine builder did THIS bad of a job, would YOU trust him again with a do- over? Even thou it should have been free, sometimes it's just not worth it. Cut his loses and try again with someone else. Seen customers do it with other shops before coming to ours

He said that the customer bought the engine and didn't use it until some years later.

*Yes, it is not unusual for these Wankel engines to fail prematurely.*

@@doktorbimmer hey bro need more help FAKE TROLL az616578.vo.msecnd.net/files/2016/08/27/6360787077700554381193066848_Internet-Troll.jpg ON ALL ROTARY SIGHTS 1

People make lots of excuses for why these engines fail so often and easily... the truth is that Wankel engines are inherently weak and unreliable. There is nothing that can be done to make them as durable and reliable as a reciprocating engine.

*Mazda had the same problems with brand new engines... that's why they dropped Wankels like a bad habit over 7 years ago!!!!*

@@doktorbimmer hey bro need more help FAKE TROLL az616578.vo.msecnd.net/files/2016/08/27/6360787077700554381193066848_Internet-Troll.jpg ON ALL ROTARY SIGHTS 1

@@therealdokoterbimmerrotary6751 wow look around BLACK TROLLING HE MUST BE MAD

It was prob fairly corroded when it got slapped together. We also don't know how long it's been since thrown together time wise. It may have been over a couple of years- if no corrosion inhibitor it'll corrode all the alloy parts

I think everyone can see this, point is it was driven 50km since the last rebuild, obviously the last rebuild used plenty of parts that should never have made their way back into an engine.

Yeah you guys are probably correct... the engine builder probably didnt clean up the previous orange water passages when rebuilding.... but farout that is some hardcore corrosion Gunk ? Surly he would of cleaned it when rebuilding ?

@@jmoore9806 its pretty crazy huh, I mean I haven't built any rotors, I have pulled a few apart and have built several piston engines at work, and the disparity between the condition of some parts being near new and some other parts being terribly worn and/or corroded says to me the last build was not very long ago, and used plenty of trash parts.

@@ryanworkman5229 yesh that could be the case... builder didnt use new parts... Also the water passages that are very Orange and gunkd up only happens when cars run no coolant and the owner runs the car with low water levels and water starts boiling with aluminum and corrodes start to happen....its very very hard to get water passages that Orange when running coolant.... coolant is anti corrosive and will take up to 10 years for orange passage to happen.... I just started my wrx for the first time in 12months.... it had no coolant in it....so when i pull it apart i will confirm if no coolant in the radiator system will cause corrosion

*It is a Wankel engine... completely different from a Rotary engine.*

Correct. No pistons. Unless you keep getting it confused with an obscure engine that went out of use more than a century ago.

*Every Wankel KKM engine has at least one piston.... **_ITS RIGHT IN THE NAME DUMMY!!!!!_*

*The moral of the story is don't buy Wankel engines... they are fragile and unreliable.*

3 decimal places of precision, eh? You must know the whole story behind that engine.

*These are not the smart automobile enthusiasts that are buying a Mazda RX...*

wow im not sure mom's going to pick you up at all now. are you goining to be ok on your own.

@MrShaka1965 *Mom knows more about cars than you do son...*

It's common practice, they don't wear like in a piston engine.

@@fullboost Plain babbit-metal bearings are cheap. Doing another rebuild because someone cheaped out and didn't replace seals and bearings and gaskets isn't.

Second hand bearings are often used in rotary engines not to save money, but becauyse they recieve so little wear they can take a long time to wear in. A seal is a more common failure point than a bearing.

*What ever the price? these engines are not worth the bother.*

hows the savings going.have you sat for your learners yet

@MrShaka1965 *Excellent! I went down to the Mazda dealer to buy a new RX but they told me they stopped making those POS cars years ago.... **_Lol!!!_*

*Really? Because Mazda was have very similar problems with their engines too.*

@@doktorbimmer The problems were with the Renesis engine in the RX-8. Nothing wrong with the old 13B engine.

@JP Onefourseven *Yeah, but the old 13B naturally aspirated is a gutless turd... yes, they ran longer albeit with little to no compression or power after 50k miles.*

@@doktorbimmer What other 30 year old 1.3L carby engine makes over 200hp with just a bit of porting? Sure they won't last as long as a piston engine if used for normal driving around but they have no problem being driven hard every day. Which is why they are a good choice of engine for a sports car, not so much a daily driver.

@JP Onefourseven *What 1.3 liter are you referring to??? Mazda has never produced a 200 hp 1.3 liter and the 13b engine has a actual, true displacement of 3.9 liter... when compared to a 720° firing order reciprocating engine it is still considered a 2.6 liter.* *If they were a good choice for sports cars? why did they sell so poorly and have to be discontinued????*

They love them ? Just like other love rb's or jz's

@@stefan-stocksmadesimple5241 But those are pretty much reliable...

they get a bad wrap from the people that cut corners when building them And also using sub standard accessories and ECUs

@@millerchassis6119 Yes, if built and maintained properly they last

@ChrisHallett83 i agreed with you up until the 200000k's bit. I disagree with THAT. Maybe if it never got a hard time, never ran a single 1/4mile or had anyone at all have any fun in the car then maybe, just maybe it might go 150000. But what would be the fun in that?!? 😌

@ChrisHallett83 Or no fucking idea in general.

@@keithrx3c Said the dolt Bogan.

@ChrisHallett83 Please explain the reliability, efficiency and expensive rebuild in detail. Include apex seals that fail, poor fuel economy and emissions due to combustion chamber shape, not conducive of proper burning of fuel and total loss oil system. Where can I get a cheap good quality rebuild for a Renesas 13B that someone knows how to do properly?

@@shanemitchell5807 Refer to my previous comment above.

Said the dolt Bogan.

Any engine is garbage if you don't build it right

@@JeremyPetho You don't know much about engines do you kid?

Not really, I have only been a mechanic for 6 years. But I do know that if you do a bad job building an engine, it usually won't turn out well whether it is rotary or piston.

@@JeremyPetho Indeed, sounds like you still have a lot to learn, in particular why this type of engine is obsolete. The Wankel engine is no longer manufactured in series production anywhere in the world.

It is obsolete because it is not suited for meeting current emission regulations and it does not have much appeal to the general population. But it is a good performance engine for car enthusiasts who are not after an economical engine for their daily driven car, which is why parts continue to be made.