The Ultimate Rotary engine - BILLET 4-Rotor | fullBOOST

not so long ago we showed you an awesome 20b three-rotor build by promos racing well today they're building a full road one of the most sought after japanese engines of all time the mazda 4 rotor isn't even a production rotary engine mazda built them as a race only application in 13j and 26b variants the latter version powered the famous group c787b mazda winning the 1991 24 hours of le mans outright nowadays however it's not uncommon to see these custom engines powering a streetcar due to not only the performance aspect but their unmistakable sound simon last time we were filming here we filmed a very very nice three-rotor engine today we're doing a four raider four air yeah it's a nice um naturally aspirated peripheral port yeah pp yep i can see why uh people do um naturally aspirated four raiders they just sound incredible and amazing it's like the closest thing you're gonna get to a formula one engine yeah they sound like an f1 so the last engine we filmed ran the billet pro plates and this one is again but what is the advantage especially doing a four rotor build in running an aftermarket plate like the billet pro unit yeah it's basically support you want to be able to support that long crank and you're not able to do that in the cast factory plates and i can show you the reason what people have done in the past before the biller plates is they run a insert in here but you can see there's not much support and there's nowhere to bolt it up to so what they do is they um drill some they counter bore it or i've seen that it's a bit uh what we can say budgie to say the least but it's the only way they could do it previously but now we've got a better solution so what happens is there's not much support here for the stationary gear so they make a carrier they put the um stationary gear in it and they cross their fingers and hope that it lasts nine times so that's sort of one reason why in the past people have struggled with boosting engines yeah in terms of reliability yeah so billet pro have got a a specific 26b four rotor six rotor a rotor or how many you just keep adding them up so this is different to your standard 13b center plate yeah so it's got no oil filler tube yep so you don't need that um that on a intermediate 26b style plate um but you can see the stationary gear will bolt up there and you've got plenty of support it's really obvious the difference there yeah yeah so um and then if we get yeah so this one's already been yeah so the stationary gears in there um it's bolted up firmly and it can't move there's plenty of support there for it so let's start assembling [Music] i'm resting bottle today what do you got there hey this is the star of the last video i know i love it brand new brand yeah even the brush is good not bad so a lot of people were asking what this was called it's called hard setting gaskets are men they call it some people call it aviation cement this one's a hard setting one that we use it just stops the oil from leaking out of the sump area onto the sides now unlike the last engine we filmed these plates are not anodised so this is the rule yeah this is a billet finish i guess isn't it yeah so most people are pretty happy with the raw finish we probably do 80 of engines in the raw than the other 20 percent of colored anodized last time we built the 20b from the sort of mid plate the 20b 80mm thick plate and we built the back yeah then we turned it over and built the front yep so this one we actually just keep stacking them up the finish on these plates is just absolutely amazing the amount of work that must go into them what's that part there you're dropping it this is um the front jar so is this a three three-piece crank yes three-piece crank [Music] again we're using unbreakable two-piece race apex seals with the biller pro inserts you can request them without any ports in them so when you've got a pp and there's no need to block any of the intake ports or anything like that because we've got blank inserts what size is the uh or the trumpet su you guys use 50 mil there are a lot of comments in the last video simon about shafts well when we get older this is all we can talk about what rotors do you use in this sort of n a you want the highest compression possible we've now done the rx-81 so we use a high compression 9.7 to one rotor and that's out of a 1990 rx-7 so we use them they're lighter than the series four same compression ratio as a series four non-turbo but these are a lighter rotor so the most important thing is to line as we move the rotor around a bit it's to line the corner seals up because you'll have big troubles after you're getting the getting the apex seal in how cool is this logo you say that yeah that's mint are the seals different in na and turbo engine cyber they used to be years ago but now we use the same seal because they're unbreakable and they do look after the housing like long as you run enough oil in your fuel two stroke oil that won't break that's the main thing so you don't want to break on these beautiful pp housings and the revs i used to use carbon back in the days because i handle the revs a lot better yeah we've round these up to 13 000 rpm on a on a 13b and yeah you do get a bit of chatter but everyone will be chattering at 13 000. so also if you want to come over here i'll show you mazda must have thought of us uh race guys because they actually clearance these rotors that you buy new now more than they did back when they built the oh really engines yeah yeah so and you you can see that see that mark there so they never used to be like that no so if you pulled an engine apart so they came out of a 1990 rx-7 yeah that actually have more material on it than these do so it's almost like they've paid attention to what people are doing maybe a little bit or trying to cut costs yeah hence usually you know so but it's it's good for us because in certain applications we don't have to put them through the cnc inside clearance them oh yeah but uh as the housings uh you'll see a lot of imperfections i've noticed that yeah yeah so they actually fill them with like a liquid steel yeah okay out of the factory i've never ever seen it give anybody any problems but for people using new housings and they go gee what's this discolored piece in there because they're all cast yeah when they machine them uh cast is porous so you get pin holes and where it's not important they'll um they'll just fill them with a bit of liquid steel so they're still manufacturing these yep there might become a time when they don't yeah and that's when billet pro will kick in and make some new housings what do you call this an intermediate plate in this engine yeah they're they're all intermediate plates we call them 26b plates yeah because they hold the stack gear in so this is the one that's sort of i guess different this is one of them yeah yeah and two go in a two go in a 26b now what happens with these ports here simon nothing you can just put um little aluminium blank offs if you want yeah you can leave them open they're not doing anything because of the it doesn't matter that they're open it doesn't know just dust whatever we'll get caught up in there it's just like saying yeah your engines open up the top yeah yeah so it's it's not doing anything at all once this goes on you'll see a big difference in the big sandwich that we're building here did we tell you is how much we love our supporters full boost norton saint-germain garrett advancing motion turbo smart look at some amazing supporters in our industry long time supporters too long time supporters yeah what are some of the things different about putting a four rotor together as opposed to the oe style engines it's more probably the way you're putting it together and obviously some really long studs yeah i just noticed them made by billet pro as well um this is not much difference it's all pretty much the same it's just one big wrong sandwich yeah obviously you've got a big long engine so you want to make sure your clearances are all you make sure they they're perfect anyway yeah whether it's a 10a or a 26b roughly what would you rev something like this to in the na application ah look i reckon to do 8 000 all day every day yeah that's probably what i'd recommend to my customers well the extra cubes you don't really need to rev it that hard do you no b could certainly get it up to nine nine and a half yeah and i wouldn't say any dramas of that last housing going on it's getting hard to frame this up simon this is a long one it's probably not too many 26b billet engines getting built no around the world so it's they're getting more popular though yeah yeah we sell uh quite a few of them all around the world yeah and a lot more popular now everything's more accessible more reliable so those billet pro plates help a lot so make the what do you prefer in this n a or boosted on the turbo i know you like boost i love this boost fixes everything now this is really good that's it final one closer up have you made these before for like 13 bees or 20 bees yeah so then non-port inserts yeah there's a lot of people overseas they run turbo application in a lot of drag cars full pp yeah so we ship a lot of the billet pro products i thought that was like the old meme simon was it boosting apex seals out with the pvp no not anymore because of these unbreakable high pixels so boost in and when the losers come more boosting have you had anyone ask you wanting to build a full rotor rx8 engine um yes you have yes yes i say sell both of those engines yeah and we'll put it towards one of these the rxa engines are good on their own that's it you can even we do a turbo kit for them as well yeah but we won't talk about them too much because it's a big conversion i notice you had one in the shop recently yeah look at three actually you love your rx8s every time we do a video you're talking about eric's eights i just like getting people rolled off about them i've owned directx 8 since they first came out in 2003. still got one yeah two actually i love them one of yours is pretty fast-signing pretty fast i would probably rather fit a renesas engine into an mx-5 than an rx8 yeah i reckon a good little conversion would be a turbocharged fd motor making 500 horsepower the wheels in a mx-5 yeah or an rx-8 the fd engine is just a beautiful engine i suppose that's why they ran it for so long 10 years so this is sorry this is sorry seven years seven years so this four rotor is essentially based off the cosmo cosmo yeah ports the ports the reason we do the cosmo because they're the biggest port yeah and you can put an fd manifold on them yeah that's no problem it's like the guy comes in late at the party with like 10 pizzas on these for some studs i don't wanna jinx my stand but it's been with me for 21 years this engine stand yeah i think it's uh it's testing its limits at the moment i can see how important these studs are in such a big engine yeah everything has to be aligned perfectly and we use the studs as actual studs to support the engine from twisting yeah so it's not relying on dowels it's not relying on anything it's real it relies on the dowels as well but the studs are precision machined to the whole engine yeah so you can see how they went in fairly easy yeah but they're all going to work together because they're so precise when you've got them loose you get that movement and twist in it we like to use the studs as actual studs and locate everything properly my trusty torque wrench that was another star of the last video i know good old australian built australian-made torque wrench how nice does that look that's awesome made a big engine bay for this one yeah that there oh that's incredible success that there is you know it's all nice and lined up got plenty inflate before we put it all together all the inflate spaces and washers i pre-assembled it before yeah yeah and i've spun it over and stuff like that and it's beautiful the sound of success simon and definitely success there we'll put a lot of vaseline in our oil pumps to prime them yeah helps get a little pressure for an initial start why not use rx-8 rotors in this to get more compression people do but i haven't had success with them i've tried them in the past yeah and you found this combination works better yeah yeah the 9.7 um work a lot better than the rx-8 and the rx-8 ones you've got to machine them out to put the bigger the bigger seals in um they've got the extra compression ring as well they really they're made for the side port pro fuel engine yeah we're in assist engine i haven't had any gains with them 10 years down the track when they want to refresh the engine don't have to do a lot of work to them that's a fair point they'll just pull it apart if they need another rotor or a housing or it's pretty simple so with the legs what we call the legs here we don't machine them to half inch studs because it takes a lot of material away so simon she's all done yet again another killer engine yeah another little ripper now this one's going overseas into a street car like you were saying earlier it's going into a straight car non-turbo yep come to come together very good now what's next we've got to build like a six or an eight rotor now ah well six i suppose and just keep just keep sticking yeah i was gonna say it was there's not too many cars you're gonna be able to fit six rotors no it's a big full custom car and bmw engine bays mercedes engine maze nissan engine bays there's not many to there's not many mazda engine bays that these will fit in no so obviously we just filmed the assembly now this is sort of the easy bit in a way in terms of time but g there must be some hours from start to finish definitely yeah so billet pro obviously we'll start with their plates they're a work of art and they they take a long time to produce a lot of man hours a lot of machine hours to get them to this point same as the peripheral port housings to machining our logos let alone all the other prep work that gets done so there's prep work on the crankshaft obviously building the billet crankshaft people say i say shaft too much but what do you call that yeah does anyone what do they call eccentric eccentric shafts no one calls them that anymore no i'll call it crank because it's easier because people know it yeah a lot easier there's a lot more people getting into rotaries nowadays that normally wouldn't have back yeah many years ago so if you say to them in a century shaft then they can't relate to it but as soon as you say to them a crankshaft they they can understand that i think you were saying a lot more people are getting into them well people are quite nostalgic and also these things are quite reliable it's not like oh nowadays they definitely are last week i built a 10a yeah which gave the rotary uh world a bad name yes yeah about yeah they're a tricky little engine to build you wouldn't do them too many of those no no i've got a few to build but yeah they come around very rarely but yeah they're an interesting little engine there's a lot of gear in those engines that um mazda studded the actual engines back in the day yeah one of those studs right through with nuts um but yeah the principal is still there from 1969 believe it or not a lot of stuff is um relative to all of this yeah it's amazing so yeah from the 10a to a quad to pretty much the same it's almost like whatever your imagination can get up with this stuff especially with all this billet gear you can sort of make any part you need and yeah i'm going to go from there yeah the billet stuff the crankshafts and and it's more people's passion that will make a crankshaft to suit a quad or a six rotor or three rotor cranks even two piece 13b ones it's more their passion and passion for billet plates that get all these out yeah would be good to see accessible in the car and up and running hopefully we get to see some meteor in it yeah overseas i'm sure we will i'm sure it's going to sound fantastic yeah so hopefully our next our next one is going to be a two rotor um so hopefully you can come down and join us for that yeah so maybe we'll have to film a 10a one day too at 10 00 yeah well a couple of weeks we'll be doing a 10a so if you want to come down for that sounds good that's an interesting one you'll be here for a long time i'd like to thank obviously biller pro my whole promos team because it's not just you just see me here building of course but it's not me there's there's six seven people at least in our team behind this engine assembling the plates uh fitting the inserts fitting the stationary gears you know so it's it's a promos team that really are behind all these builds not just myself i'd like to thank uh yourself from uh full boost for always coming down and that's all right and showcasing our fine work here i think the drag racing scene pushes more of the rotary aspect so having tracks drag racing tracks around helps boost the rotary economy let's say um but yeah also i'd like like to thank our sponsors norton they're always supplying great products for finishing off or porting so they're a great support for us [Music] i can already smell the brat fumes i can't even say the sound

Channel: Fullboost

Views: 362,887

Rating: 4.9228258 out of 5

Keywords: fullboost, promaz, promaz racing, billetpro, 26b, 13j, 4rotor, 4 rotor, rotary engine, rotary PP, pp engine, peripheral port, porting, ported, brap, australia, jdm, 787B, Le Mans, Mazda 4-rotor, rotors, apex seals, billet engine, billet, billet parts, cnc, machining, performance, precision, engineering

Id: ogekJfgdzMQ

Length: 21min 55sec (1315 seconds)

Published: Wed Nov 11 2020