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Probably left and right Power Windows.

Yep! They're for the windows! 😊

Yep! That's right! Some may say it's intentional 😅

The heat shielding wrap I put on the muffler got some grease in it from the driveshaft and was smoking. Our Driveshafts come pre-lubricated and there is no need to add more (like I did). Adding more may result in messy grease getting flung all over stuff under the car as the driveshaft rotates fast haha😅

@@spec13motorsports Ah, thanks. I asked it in the email I just sent you too.

It's the stock fuel pump with an adjustable fpr. However, depending on your donor car, you may not need to change the fpr. The busa has a returnless fuel system running at 43psi.

@@spec13motorsports Oh so its pretty identical to the NA fuel system.

You can retain most of the Miata sub circuits and just provide power to them directly on their own circuit from the battery, or an ignition switched source from the busa harness.

Palmer has sound restrictions unfortunately. But we run straight pipes on the Exocet sometimes and it screams!

I wouldn't call it snap oversteer, that's kind of a specific thing. It definitely power-over slides pretty easily though!

@dmcharlestt4945 thank you, stay tuned for more!

@@telecomwiz2004 filmed on a gopro hero 7. So circa 2015 or so haha

@chinhvannguyen4584 wow, sounds like an incredible project! Post video when it's done! 😊

@spec13motorsports i am still doing research to try to figure it out. Would you guys ever think to get a kit made?

@@chinhvannguyen4584 possibly if there's enough interest! It's definitely a great platform for it!

spec13motorsports.com/products/hayabusa-engine-swap-for-na-nb-miata-pre-order-deposit

@kenpopielski1324 thank you! Let us know if you have any questions!

@kenpopielski1324 this particular car isn't equipped with reverse as it's an "all the lightness" build. Reverse is an option, it's an electric motor and sprocket mounted between the diff flange and drive shaft. spec13motorsports.com/products/electric-reverse

I actually just finished filming one that covers the build process at a high level. Keep your eyes peeled for this in the next week or so.

@nickrains115 this car weighs 1,600lbs. We haven't turbo'd one yet, but we're working on a Turbo kit for next year. Personally, we prefer the stroker kits on a track build. Less power, but less weight and more reliable. For a street build, a Turbo would be incredible!

@@spec13motorsports I'll keep an eye out for a video with the turbo kit!

@dmcharlestt4945 the all in cost will vary depending on how you source the engine, either from a salvage bike and then part out, or buy every engine component you'll need individually. Buying a running salvage bike is a great option because after parting out all the stuff you don't need, you'll end up getting the engine for free and possibly pocketing a few bucks. The base kit price is $3800, and this includes virtually everything you'll need to get going other than shifter (there are several options) and ppf delete. Getting down to 1600lbs for a track only build would be pretty easy. There's just so much stuff you can delete if you're not worried about having heat or a radio. If you need to retain some luxuries such as lights or an interior, it may be a challenge. I'll be weighing v2.0 of this car soon. We did a decent amount of cutting!

@spec13motorsports Awesome. And this is only for the NA miata? Or will you be doing an NB kit? Though I suspect I'd need to go turbo for the NB's extra weight. I'm looking to build purely for racing and the competition is a K24 civic doing 250whp weighing around 1750lbs.

​@dmcharlestt4945 the kit works with na, nb, and Exocet. Rather than a Turbo, we would strongly recommend doing a stroker kit, like I'm the Radical sr3

@@spec13motorsports Did a little more digging around about the project and looking at your kit, man you're brilliant! Looking forward to seeing more from you. For further questions, do you have a contact? (discord, FB, email) or should I just comment here on UA-cam?

@@dmcharlestt4945 you can reach us on Facebook: facebook.com/Spec13Motorsports?mibextid=ZbWKwL Instagram: instagram.com/spec13_motorsports?igsh=MW40YnFkOHc3amhiOQ== Or at spec13motorsports@gmail.com

@julitacahyasari7265 the stock Hayabusa sequential transmission! With over 300lbs of weight reduction and around a 130mph top speed, loading does not exceed the factory hayabusa thresholds. This makes for a super fun, reliable track car!

@@spec13motorsports Thank you, good and interesting information

It would work great, so long as you don't expect to go 200mph! Haha keeping the weight down is key. For instance, at 1,600lbs a speed of 130mph would be roughly equivalent kinetic energy to a Hayabusa motorcycle going 185mph.

​@spec13motorsports what do you think a exocet weighs with this setup, 1450?

​@Tanker_Wanker our Exocet Sport weighs 1195lbs, and our Miata is 1,600lbs

@@spec13motorsports that's insane!! 🤯

😂haha love it! You can all refer to us as "Palpatine's Garage" now.

We replace the sprocket with a driveshaft flange and a 2 piece driveshaft, and then pair with any of the commonly available Miata diffs. The 4.3 diff will yield a 100mph top speed, while the 3.6 diff will yield a 130mph speed on standard 15" wheels/tires. They can be boosted up to 7psi reliably on stock engine. Check out our FAQ's spec13motorsports.com/blogs/news/frequently-asked-questions-faqs

Correct! We use the Hayabusa transmissible. This saves a ton of weight and complexity. Check our FAQ's spec13motorsports.com/blogs/news/frequently-asked-questions-faqs

There is a kit! We've spent the last few years designing and testing. Check out our website for more details. Here's the link to our FAQs spec13motorsports.com/blogs/news/frequently-asked-questions-faqs

Thank you man! God bless!​@@spec13motorsports

That would be ridiculous! It'd probably still be a weight savings over the the stock power plant haha

@@spec13motorsports the torque output at low rpm may be enough to go uphill without any effort

Theres a hellcat miata

@@Gnarly858 holy cow! Must have been some crazy Tetris to fit a cruise ship engine into a thimble! 😂

I forget what company but some is building a v8 busa kit for Miata’s

We developed a Hayabusa swap kit for NA/NB Miata and Exocet, it's specific to those vehicles. Check out the FAQs on our website, and feel free to email me with questions. I'd be happy to help you figure out how to busa swap your Honda! It's the a absolute best way to go for a light car, I promise you'll love it! spec13motorsports.com/blogs/news/frequently-asked-questions-faqs Spec13motorsports@gmail.com

Good question! Unless there's a difference between the manual and automatic tubs, I can't imagine it would. Actually, I think there's the potential to simplify the process adding a clutch lever instead of the pedal. If you went with the paddle shift option, you could mount a hydraulic clutch lever to the trans tunnel. This way you wouldn't have to cut a hole in the fire wall and mount the clutch pedal.

The car is 1,600lbs without driver, and has a gen 1 hayabusa which makes about 175hp. Our Exocet weighs roughly 1200lbs and has a gen 2 hayabusa making about 197hp.

@@spec13motorsports Is this any faster than a Spec miata?

​@superbarnie yes, it is MUCH faster than a spec Miata. It will likely be about NASA ST4/TT4 pace with stock motor and no aero, but I'm currently working on an ST3/TT3 trim which will have aero and a 1507cc stroker hayabusa engine.

This would be an awesome drift build. Using the 4.3 or 4.1 diff would give you incredible torque multiplication. Plus the swap moves the weight distribution back a little bit, which will help with inertia drifting. We've done lots of track testing over the last two years, and oil pressure hasn't been an issue. Even with tons of aero and race tires from our spec Miata we never saw any big dips in oil pressure. However for added protection we do recommend running an oil pan baffle. They're available for about $50 from Schnitz racing. Once the first few kits ship in the coming weeks, I'll be working with one of my customers to make an install video. It's an incredibly easy install. After the initial installation, the engine can be removed in 30 minutes or so, making it pretty doable at the track. The initial install requires 4 holes to be drilled in the tub of the Miata for the engine mounts, and two more for the drive shaft carrier bearing mount. Then you pretty much drop the engine in, wiring harness and all, connect the fuel pump wires to the stock busa fuel pump harness and you're off to the races, so to speak.

Thanks! I promise we'll upload more videos this track season. We're busy finalizing the header design and filling the first few orders. Stay tuned!

Almost! We are starting to fill orders. We spent yesterday welding up some sets of headers. Check Facebook and Instagram later today for an update.

We're not doing installations, just producing the kit. The right hand drive version is not yet available as clearance issues with the steering shaft will need to be addressed.

We're located in Syracuse, NY. Email is: spec13motorsports@gmail.com Number: 315-288-0412 Feel free to reach out so we can discuss options on sourcing donor parts.

For your application, I would upgrade the clutch basket and clutch springs. Other than that, I don't see any reason it wouldn't hold up really well. I plan to attend some drift events this year for testing/promotion.

@@spec13motorsports Thanks for getting back to me. I see in some of your other comments that you are limiting the top speed to 100mph due to concerns of excessive load, is that right, and if so, why?

@jaiden270274 No, we're not restricting speed to 100mph. The Miata in our first video at Palmer was equipped with a 4.3 diff, which will yield a 100mph top speed. But nothing is overloaded if speeds are kept below 127mph, which the 3.6 Miata diff will hit with this swap. Check out our FAQ on our website: spec13motorsports.com/blogs/news/frequently-asked-questions-faqs

@@spec13motorsports thank you, that FAQ is very informative.

@@jaiden270274 let me know if you have any other questions! I think this would make an awesome drift build.

It holds up great! Very stout car power plant if you keep the load to a reasonable level. I'm not surprised they were stalling it a bunch, the clutch is extremely touchy. I still stall it from time to time haha

No, we are running stock pulling system on both test mules. We haven't had any issues with oil pressure with either, but if you wanted extra assurance, you could get an upgraded oil pump gear and high pressure bypass valve from schnitz racing.

@@spec13motorsports I have just heard of oil starvation problems with motorcycle engines on track but its cool you haven't had problems

@peanutbutterpadre1519 yeah, it must not be as much of an issue with the Hayabusa. They've proven to be a very reliable car power plant on track. The Thunder Roadster GTR uses the Hayabusa power plant, and their rules only allow the high pressure bypass valve and oil pump gear, which tells me it's not a concern because then the rules would allow for dry sump, accusump, baffled pan etc.

There isn't much rake in the car, though less would certainly help. We also run 3 cars in spec Miata, and that's one of the only ways we have to tune suspension balance. It's amazing how much of a difference a half a turn makes!

Also you mentioned the idea of branching out to other vehicles - I am interested in the feasibility of swapping the first gen 86/brz twins, any thoughts on the platform? Does this sort of powertrain make sense in a heavier chassis such as this? Any concern with communication to the modern ECU's? Very excited to keep tabs on what you guys are doing here.

The under hood fitment with the available intake manifold is tight, but no cutting is required.

@austinhamilton9537 we're exploring the BRZ/FRS, but I'm afraid top speed would have to be pretty limited to keep loading down and ensure reliability. We've only tested with the stock ecu with a Schnitz Racing tune, but we're working on a project that will allow us to experiment with the ecu more

No, but with so much weight off the front tires, you don't miss it at all. The steering is much lighter than my Spec Miata on the same tires for comparison

The paddle shifters work beautifully and allow electronic clutchless upshifts! We also offer a manual cable actuated shifter, but not nearly as cool in our opinion.

Yeah, it frees up a lot of room under the hood. I know you aero nuts are going to love it haha! It does take a good bit of weight off the front, yes. Turn in is much more eager, lots of front grip. It requires a slightly different approach to suspension setup when compared to a standard Miata.