I think the perfect budget track miata is a 2.5 swapped nc with header and cams. It could be trashed all day with 0 issues and then drive you back home from the track. The cost is 3-4k if you have the car already and it gives 98% of what na/nb miatas give handling wise.
What a timely video. I've had a coldside MP62 on my 97 for a dozen (yes, 12!) years and it has been trouble-free, but the motor is getting a bit tired. I figure I'm somewhat at a crossroads. 250whp sounds like a nice number, and is about at the limit (maybe a bit higher) of what the stock 5 speed can handle.
That’s a long time! Also worth noting that the 5 speed would likely be able to hold more NA power due to the lack of a “torque hit” like you’d get from a turbo application. I’d bet you can sit at 300 wheel on an NA K24A2 and sling the 5 speed for a significant amount of time.
For NA, I'd argue a Honda J swap is easily the better option. Superfastminis makes a great kit, and you didn't gain more than 11 pounds all said and done. More affordable, better weight distribution, more power stock, and way more responsive to bolt ons.plenty of support as well from companies such as P2R. You don't even have to come close to $6500.
Good video! I made my K swap to my JDM NA8C without a kit ( it took 11 months) and its between plates. Now going through k20 turbo setup. I would do it again and again.
@@NappMotorsports its RHD and there was a minimal amount of clearance between steering and exhaust with naturally aspirated header but with turbo dp better.
NASA ST5/TT5 and ST4/TT4 require OEM subframe as well. It's pretty much the only reason I bugged David about OEM subframe kmiata basically since they completed the first kswap in Austin's 10AE, lol. My grand total for my K24Z3 GLTC Kswap running on Kpro was $9353. 207rwhp/165rq max power tune, 187rwhp/157tq GLTC tune, 170rwhp/152tq ST5/TT5 tune. If I did a streetcar kswap, 100% would do the k24a2. The subframe is more and the engine is a tad more, BUT you don't have to deal with the hydraulic release bearing, non-OEM timing cover, and a few less sensor swap(crank).
Thank you so much for this video!! Gives such good ideas. I’m unsure on the swap I wanna do, but this was helpful. 🖤 Edit: that’s awesome you drove it to Tennessee. That’s where I was born and raised I want something to have fun on 421 with.
Thanks for this video. I am looking into k swapping my off-road Miata. It has 30x10.5” mud terrains so I need some more torque but I don’t want to add forced induction to the car so k24 n/a is what I’m leaning towards.
K is the way. I put a k20z3 lsd fwd on my 1st gen insight but seeing this build is honestly really exciting and all the handling grip on the chasis with that power.. i swear I can hear the vtec scream!
Would you consider making a spreadsheet of all the parts you need to make your k swap build? I’m very interested and I really wish I can take a ride with you to feel this car and to see if this is something I really want to do
I've thought about it, but it's been so long that finding all of the parts I ordered now would take forever. Not entirely out of the question, but we'll see.
I love my k20a3 Miata soon to be k20a2 as I wait for my k24a passenger mount. Also it’s amazing to have a great source like David at kpower with just a phone call.
Kudos to you. It looks like an insane car. Ive been going back and watching the old videos (hello, from a new subscriber) i currently have a 02 5spd with the sport package. Yeah, wives, house, and kids all put a damper on things. Lol
a fellow Rochestarian! I have a miata here too and I cant believe I only just now found this channel. Where do you go when you want to rip? Finger lakes? Ive yet to find a nice twisty "miata-friendly" road
Hey! There’s only a couple of roads around here and they’re too short to mention, but I typically just pick a lake, and cruise the roads that trace the shoreline. There’s no “tail of the dragon-esque” roads here sadly, so scenic cruises will have to do. The lakeside roads give some hood sweeping twisties.
Amazing build, I plan on swapping my Eunos soon with a K series but I have watched plenty and plenty of videos and research but I’m still struggling on which K24 to choose. I’d love to boost/supercharge it. People have said K24A2 and others say the Z3. Personally which K series would handle boost well? What if I go with the Frankenstein, K20head/ K24 bottom? Any advice/thoughts would be greatly appreciated!
The Z3 is easier to turbo charge for sure, just due to the head design and packing. Supercharger, I’d probably do the A2 since it makes more power and has more support.
I love the k24z3 I had one in my tsx.201hp stock and fast for what it is.and have one in my accord 190hp. But this is about the Mazda and in picking up a stock hardtop 1.6 and definitely got do a kz3 swap thanks for your insight
Doing a k swap with a kit like K industries is going to be expensive because of the swap kit itself but will save you a ton of time in the long run. You can save money if you're willing to do some fabrication, wiring, and troubleshooting. To me saving time is more important right now. K industries has spend time and money doing r&d to make the swap as painless as possible.
Lots of people complain about it, I don’t find it that bad. The mounts break in after a while and it’s like any other heavily modified miata. You can’t expect Cadillac NVH out of a built car.
Great question. If you want to go to the track or have a simple setup go N/A K, but if the car is 100% a street car go turbo. We might do this same type of episode for our other build in this channel, it’s a turbo VVT engine.
@@NappMotorsports Thank you for your reply! My goal is to have a street car that's also good on the track. I might go K but the only reason I'm unsure is low end power for the street, at the same time a K will be more reliable on track. Another thing I have to make up my mind about is whether I love turbo noises or super high revving engines more haha. I'll make up my mind when I can afford to do either one, I'd love to see a video about this :)
I had the opportunity to ride in two K swapped Miatas last August while attending MAG. I own a 92 unannounced LE black and tan that is pretty much stock except wheels and tires. One was a K24A2 that had around 260+ RWHP. The other was a K24Z3 putting out around 210 RWHP. Discounting the cost, and much of it is hidden, I ruled out doing a K swap. Let me say if I were going to do a K swap, it'd be the K24Z3. 200+ NA horsepower is plenty (double the 1.6L) while the K24A2's power level is too excessive to make it an enjoyable daily driver, or a car I'd take on a lengthy trip. I don't race and don't intend to. Why did I rule out the K swap? 1) either swap deletes power steering (yes there's an expensive electric kit) 2) either swap deletes AC (again there's a solution, read $$) 3) but the killer for me is both swaps involve changing out the oil pump and deleting the engine's balance shaft. The resulting engine vibration is undesirable and unpleasant. Now anyone who races doesn't care about power steering, AC, or engine vibrations. All he wants is excellent horsepower and a flat torque curve. The K swaps give that. A racer doesn't care how long the engine will live, he can always find another one. Me, I want 180 to 200 RWHP, flat torque curve, AC, power steering, and little to no vibration. I want my ride to be fun and pleasant to drive / ride in. The K swaps don't meet my expectations. When someone comes up with a K24Z3 swap using the stock oil pump and balance shaft, I'll change my perspective. The power steering and AC issues can be cured. As the author said, ride in one before you open your wallet. Methinks there's a reason K Power doesn't have a car available at the different meets which a prospective customer can take a ride in, just as a passenger...
@@johnross8939 YES! I was just going thru this after doing all my homework and I have a j35A4 sitting in my garage right now (literally got it today)! Going with OZ's kit, its been a long road but the J swap is pretty sorted now. I cant wait to get swapping!
Good video with Great information, Thank You! I'm doing a bored out 2.0 from McCally Racing and will have 225ish rear wheel horse power which I think will be ideal. Not sure if doing the same with your race car would work well for you or not as I know nothing on racing rules and classes. Perhaps it would be a good idea? I have a bunch of things I want to do before I drop in the engine and I got injured at work, lost the work comp case so money is extremely tight, so I'm not sure it will ever get done or not. I keep praying that somehow something will happen, so I can finish the car as I so love the Miata. Best Always and in ALL WAYS,
For now we’re planning on just using a stock VVT engine, but we do have plans for a bored and stroked high hp NA BP in the future. Sorry to hear about your injury, I’ve got no doubt that you’ll come out on top in the end, just keep on it!
Have you ever driven a LS-3 V8 swapped Miata? How does it compare to your car if you've ever driven one? I asked because the V8 is suppose to make 400+ whp as well.
My questions on the V8 vs the K are: a) How much more are you paying for the additional HP of the V8 over the K ? b) How often do you use that additional HP ? If not too often, then your marginal costs in question "a" theoretically increase on a per use basis. c) Are you really able to use that extra V8 HP / torque ? d) How much margin of safety are you loosing going V8 ? e) How do the resale values compare and difficulty in selling the V8 vs K swapped car ? Start and finish with an empty space in your garage, buy the car, do the swap, drive it, sell the car. What's the net cash outcome ? Yes, I know, we don't do this for the cash flow but we can't ignore it either. Sorry, this is what happens when accounting gearheads think about doing engine swaps.
Your 10-12k estimate, I assume that's before boost? You mentioned in one of the earlier videos you're about 6k into the turbo setup. So are you around 18k into the swap then?
I’m considering superchargering my 1.8 94 and swapping some NB stuff over like the VVT heads, the 6speed transmission, etc. just for a fun street car. Any thoughts or things you might know about supercharged 1.8s?
I have it on good authority that they have a test manifold for the K24Z3 BRZ/FRS turbo setup. No idea on their timeline though. I’m sure if interest was expressed to them, they might move on it!
400 or less, no just the Miata 6 Speed. More than 400, the BMW transmission is your best bet but that also has it's own vibration issues, and it's expensive.
I have an Element and was thinking about getting a Miata to put its k24 in, so it will live on… Is that stupid? lol It burns oil, so I definitely would have to have some restoration (?) done to it/swap internals/etc.
Has anyone here driven a 1.8 Rotrex with over 200whp? Coming from an FFS supercharged 1.8. Looking to have a fun responsive street car that can be driven hard like NA (full throttle time) and also be tracked with no worries. VVT motor is the base.
We have not. My concern with tracking an FI Miata is just the immense heat that the systems put out. It heats all components of the car up and makes reliability take a huge hit. It sounds like what you want is a K24A2 swap.
It’s lighter allegedly by like 30# from what I’ve heard. Not sure on the validity. And they can be made as quiet as a stock Acura TSX if you really want.
Wondering how similar the 124 spider is to the NC engine bay or is it closer to ND1? Would likely be going all motor K24 with K20 head with the tiny Garrett turbo from the tired Fiat multiair if possible. Looking for a fuel efficient 250hp setup that can go 500k miles.
Teetering on the brink... Currently stock 1.6. Already bought a JDM 1.8 BP 5a + 6 speed, and a 3.91 Torsen package (nothing installed yet). Car is just a summer/weekend cruiser. Leaning towards turbo and Haltech Elite... Trying to keep costs down ;)
Drag cartel head build k20z3, 11:1ish k24 bottom, itbs or center feed intake manifold. May not quite get there but will be damn close and be streetable. What I'm currently shooting for with my build
@@MrDillbaby i was thinking of going k24a NA. Ive been eyeballing stock k24a block, k20a head, dc cams, and fuel mods I should be around 260 wheel. As a street car in the south east at sea level with 93 octane, that should put me close before doing bottom end and port work. I still love torque but don't necessarily want to have turbo power on this build.
For 300 NA, definitely on board with what Dillon is talking about. The K20Z3 is different than the K24Z3, so my reference of a Z3 in the video is always in regards to the K24.
I mean sure, you could make them as quiet as the cars they came out of. The reason everyone makes them so loud is because K’s make the most power on a 3” exhaust, and we’re all in this for power.
I so want one. Unfortunately, $12,000 or anything close to that is not doable. I still can't believe it costs $12,000 to replace one 4 cylinder with another one. You can get a c5 corvette for close to $12,000. Also, if you turbo the k there is no way the stock transmission will handle it long term. The stock transmission can barely handle a turbo 1.8l. I believe you could do a full lfx drivetrain swap for close to $12,000 or even less if you know where to shop.
You're not wrong about anything here, but it all depends on what you want. If I wanted to go out and buy a C5, that would've been an option, but I'd rather build something myself. The NB 6 speed trans is holding the power quite well for now on the turbo setup, and if it goes, I'll likely swap another one in. They're known to handle 400HP. The 5 speeds are bad over 250 typically.
I understand and agree about building your own. I have a 1999 NB that I really wanted to build. Was really excited when they began talking about the z3 swap being $2000 less than the a2 swap. I didn't know the 6 speed could hold 400 hp. Most reports I read said 300 ,and with them going to $900 in my area they have become a costly replacement part. I guess I'm just not in the tax bracket for a kswap miata. :)
I'm just starting on my basic turbo BP4W miata build with stock internals and gonna stop it there. Already sunk over $5k into it. Any more mods after that and I'd be kicking myself for spending that much on not a K swap lol. I'm just hoping I won't crave anymore power once I've gotten used to the gt2560.
I still think that if you're gonna spend the money and time it takes to do a swap an aluminum ls is the way to go. Extra weight? Yes. But the torque a reliability is unmatched
While I think LS’ are cool, it’s not all about making the most power possible. I wanted boost and I didn’t need 400 ft lbs at 1500 rpm. This thing barely hooks up at 315 ft lbs. More would be pointless without hacking up the body for wider wheels/tires.
Great video! Now I have a rough number of what to save for! Recently got a miata (NA 1.6L) as a project car, definitely craving more power in it since my daily is a WRX. Both very different machines, but I feel like the miata is just missing that power especially overtaking on the highway.
Congrats on the miata! As much as I love power, suspension is the best mod on these cars. If you have some fun back roads near you, suspension goes much farther than power!
@@NappMotorsports Luckily the car already came with extra bracing and upgraded sway bars, I was thinking brakes + coilovers next before adding any more power. Also possibly swapping the rear diff, its the 4.3 viscous LSD, so swapping for a 3.9 torsen
E46 subframe interferes with the oil pan. You'll have to go with a dry sump (expensive) or a rather complicated external oil pump relocated oil pickup setup from tractuff that will take some custom fabrication.
You’re welcome to design your own and see what it costs you. I had the first one made and it cost me over $1000 in materials and machining cost. Not to mention the time spent testing and redesigning until it fit.
@@NappMotorsports I'll be in Rochester in the middle of june and would love to see what a boosted k swapped miata feels like before i bite the bullet and do the swap. Let me know
A good swap I’m betting is 10k because you’d be an idiot not to rebuild the trans and freshen up the engine before installing everything the final time and driving it.
Heck yeah bro and I gonna build a oem engine to the max first but 💯 fact when I do anything further it will be a kswap for sure just cause the potential of the engine and its high reving capabilities... or a rotory swap but I still studying them atm 😋... n e ways bro I think the K swap is radical af my guy ... 0eace n love build on and stay safe ... ps I in nc so maybe one day we can run the dragon 🤷🏽♂️.. n e ways stay safe and rad l8r
![[UA] NAVI vs MOUZ | BO5 | IEM Rio 2024](http://i.ytimg.com/vi/CMBYk0cbGoA/mqdefault.jpg)
Great breakdown
Thanks for watching!
Great video dude, I spent $23k on swap related parts. Thanks for the shout out! :)
I knew it was an astronomical amount haha. I'd be so afraid to track that thing at that point.
Wow, could just buy a faster car. That's my problem with mods. Just buy a faster car.
@@sv2697 not within the ruleset of the racing I do.
@@JO.Racing I wasn't referring to racing rules/event/class etc but car mod in general since most modder don't race or they don't do it legally.
I think the perfect budget track miata is a 2.5 swapped nc with header and cams. It could be trashed all day with 0 issues and then drive you back home from the track. The cost is 3-4k if you have the car already and it gives 98% of what na/nb miatas give handling wise.
I 100% agree with you hahaha. I just love NA’s too much.
Do you have one?
How much HP pulls those one out
The 2.5 duratec?
@@all_out_of_bubble_gumyou can get 250 hp if not more out of that swap
4piston is killing it with the k24z now since the video came out just a heads up for people who don't know
I just want to throw my wallet at them lol
Just picked up a k24z3 from local junkyard with 63k for 250$!!! Hyped!!!
Wow. That’s a steal nowadays!
What a timely video. I've had a coldside MP62 on my 97 for a dozen (yes, 12!) years and it has been trouble-free, but the motor is getting a bit tired. I figure I'm somewhat at a crossroads. 250whp sounds like a nice number, and is about at the limit (maybe a bit higher) of what the stock 5 speed can handle.
That’s a long time! Also worth noting that the 5 speed would likely be able to hold more NA power due to the lack of a “torque hit” like you’d get from a turbo application. I’d bet you can sit at 300 wheel on an NA K24A2 and sling the 5 speed for a significant amount of time.
Been watching your videos before buying my NB2 and it wasn't until just now I realized you were local to me! I will definitely be in touch!
Sounds good!
It helps that you also essentially rewrote half the instructions and corrected some issues for the kit.
Lol! If I can help someone else have an easier time with the swap, then 100% I’ll do that.
For NA, I'd argue a Honda J swap is easily the better option. Superfastminis makes a great kit, and you didn't gain more than 11 pounds all said and done. More affordable, better weight distribution, more power stock, and way more responsive to bolt ons.plenty of support as well from companies such as P2R. You don't even have to come close to $6500.
I would love to take one for a rip!
What I’ve heard is the J swap sits too low.
Great info. Im about to Kswap my FRS & alot of this info also applies to it. ...just waiting on the kit to ship
I’m really curious to compare a normal FRS to a K Swapped one, since the power figures are similar. A turbo K twin would be an absolute beast IMO!
100% agree with everything here
I fell in the category of wanting to make big power
Big power is big fun!
Saturday morning ritual...Napp vid that's how i kno the weekend is here, don't have to work, what can i start doing to my car today
If you’ve got nothing to work on, drive it!
Good video! I made my K swap to my JDM NA8C without a kit ( it took 11 months) and its between plates. Now going through k20 turbo setup. I would do it again and again.
That sounds awesome! How was the LHD clearance?
@@NappMotorsports its RHD and there was a minimal amount of clearance between steering and exhaust with naturally aspirated header but with turbo dp better.
NASA ST5/TT5 and ST4/TT4 require OEM subframe as well. It's pretty much the only reason I bugged David about OEM subframe kmiata basically since they completed the first kswap in Austin's 10AE, lol.
My grand total for my K24Z3 GLTC Kswap running on Kpro was $9353. 207rwhp/165rq max power tune, 187rwhp/157tq GLTC tune, 170rwhp/152tq ST5/TT5 tune.
If I did a streetcar kswap, 100% would do the k24a2. The subframe is more and the engine is a tad more, BUT you don't have to deal with the hydraulic release bearing, non-OEM timing cover, and a few less sensor swap(crank).
Thanks for the breakdown, this is great for us to know.
Thank you so much for this video!! Gives such good ideas. I’m unsure on the swap I wanna do, but this was helpful. 🖤
Edit: that’s awesome you drove it to Tennessee. That’s where I was born and raised I want something to have fun on 421 with.
Glad it was helpful!
Thank you for the informative video. I absolutely love it!!
Thanks Jordan!
So much better than the other kswap videos I've seen that were by kids on a too much Adderall with their parents money.
I could probably use some adderall lol.
Thanks for this video. I am looking into k swapping my off-road Miata. It has 30x10.5” mud terrains so I need some more torque but I don’t want to add forced induction to the car so k24 n/a is what I’m leaning towards.
That would be a sweet setup.
K is the way. I put a k20z3 lsd fwd on my 1st gen insight but seeing this build is honestly really exciting and all the handling grip on the chasis with that power.. i swear I can hear the vtec scream!
I wouldn’t do it again if I could go back.
@@NappMotorsportsWhat would you have done differently in hindsight?
great video, defiantly helped to have the info because i’ve heard everyone say it was super cheap
Yeah everyone thinks it’s just 4.5k lol
Would you consider making a spreadsheet of all the parts you need to make your k swap build? I’m very interested and I really wish I can take a ride with you to feel this car and to see if this is something I really want to do
I've thought about it, but it's been so long that finding all of the parts I ordered now would take forever. Not entirely out of the question, but we'll see.
ua-cam.com/video/Br-_1oxuGSY/v-deo.html i think this channel created a spread
I love my k20a3 Miata soon to be k20a2 as I wait for my k24a passenger mount.
Also it’s amazing to have a great source like David at kpower with just a phone call.
Their customer service has always been top notch.
Kudos to you. It looks like an insane car. Ive been going back and watching the old videos (hello, from a new subscriber) i currently have a 02 5spd with the sport package. Yeah, wives, house, and kids all put a damper on things. Lol
Thanks man!
What about a j swap? J37a would be the most complicated version but it is VERY light.
Thought about this but if I went V6 I think the LFX had a more complete kit.
got an 04 tsx already sooo time to swap our miata and make our drift build
Do it up!
a fellow Rochestarian! I have a miata here too and I cant believe I only just now found this channel.
Where do you go when you want to rip? Finger lakes? Ive yet to find a nice twisty "miata-friendly" road
Hey! There’s only a couple of roads around here and they’re too short to mention, but I typically just pick a lake, and cruise the roads that trace the shoreline. There’s no “tail of the dragon-esque” roads here sadly, so scenic cruises will have to do. The lakeside roads give some hood sweeping twisties.
If Tim the Tool Man Taylor taught us anything, it's that the correct answer is ALWAYS more power...
😂
You should make a list of everything you needed
I’ve thought about it, but it’s all so scattered in years of emails that it would require my attention for a full day to iron out.
Love you brother 💪🏽, love the humble vibes man
Thanks man
Amazing build, I plan on swapping my Eunos soon with a K series but I have watched plenty and plenty of videos and research but I’m still struggling on which K24 to choose. I’d love to boost/supercharge it. People have said K24A2 and others say the Z3. Personally which K series would handle boost well? What if I go with the Frankenstein, K20head/ K24 bottom? Any advice/thoughts would be greatly appreciated!
The Z3 is easier to turbo charge for sure, just due to the head design and packing. Supercharger, I’d probably do the A2 since it makes more power and has more support.
I love the k24z3 I had one in my tsx.201hp stock and fast for what it is.and have one in my accord 190hp. But this is about the Mazda and in picking up a stock hardtop 1.6 and definitely got do a kz3 swap thanks for your insight
It’s a great engine with lots of potential for sure.
underrated channel
Thanks! That means more than you know.
Doing a k swap with a kit like K industries is going to be expensive because of the swap kit itself but will save you a ton of time in the long run. You can save money if you're willing to do some fabrication, wiring, and troubleshooting. To me saving time is more important right now. K industries has spend time and money doing r&d to make the swap as painless as possible.
I don’t disagree
I’m going back and forth between a k swap and a turbo. What’s the NVH like in a k swapped Miata?
Lots of people complain about it, I don’t find it that bad. The mounts break in after a while and it’s like any other heavily modified miata. You can’t expect Cadillac NVH out of a built car.
Is the 12k you mentioned include the turbo? Or was it just more because of your cool exhaust? If not, how much more did the turbo cost you?
12k was pre turbo. Boosted, and doing all of that fab work myself, was $5k more. Would be even more if you paid someone to weld it for you.
What about a power goal of ~220-250whp?
Would you do an N/A K swap or turbo the Miata engine?
Great question. If you want to go to the track or have a simple setup go N/A K, but if the car is 100% a street car go turbo. We might do this same type of episode for our other build in this channel, it’s a turbo VVT engine.
@@NappMotorsports Thank you for your reply!
My goal is to have a street car that's also good on the track.
I might go K but the only reason I'm unsure is low end power for the street, at the same time a K will be more reliable on track.
Another thing I have to make up my mind about is whether I love turbo noises or super high revving engines more haha.
I'll make up my mind when I can afford to do either one, I'd love to see a video about this :)
Thanks for the feedback. If you plan on tracking it often I think K is the way. We will put together a video on this I think.
I ran 220 with my MP62 supercharger on stock BP05 engine. Very doable on Miata engine and way cheaper. Guess it depends on what you wanna spend.
Slogging through rebuilding one of my Subaru's so I can start saving to swap my A2 into my NA6, I do not have the patience for this.
It’ll be more fun than a Subaru 😉
@@NappMotorsports Yeah, but turbo rally cars are a lot of fun in their own regard.
I had the opportunity to ride in two K swapped Miatas last August while attending MAG. I own a 92 unannounced LE black and tan that is pretty much stock except wheels and tires. One was a K24A2 that had around 260+ RWHP. The other was a K24Z3 putting out around 210 RWHP.
Discounting the cost, and much of it is hidden, I ruled out doing a K swap. Let me say if I were going to do a K swap, it'd be the K24Z3. 200+ NA horsepower is plenty (double the 1.6L) while the K24A2's power level is too excessive to make it an enjoyable daily driver, or a car I'd take on a lengthy trip. I don't race and don't intend to.
Why did I rule out the K swap?
1) either swap deletes power steering (yes there's an expensive electric kit)
2) either swap deletes AC (again there's a solution, read $$)
3) but the killer for me is both swaps involve changing out the oil pump and deleting the engine's balance shaft. The resulting engine vibration is undesirable and unpleasant.
Now anyone who races doesn't care about power steering, AC, or engine vibrations. All he wants is excellent horsepower and a flat torque curve. The K swaps give that. A racer doesn't care how long the engine will live, he can always find another one.
Me, I want 180 to 200 RWHP, flat torque curve, AC, power steering, and little to no vibration. I want my ride to be fun and pleasant to drive / ride in. The K swaps don't meet my expectations. When someone comes up with a K24Z3 swap using the stock oil pump and balance shaft, I'll change my perspective. The power steering and AC issues can be cured.
As the author said, ride in one before you open your wallet. Methinks there's a reason K Power doesn't have a car available at the different meets which a prospective customer can take a ride in, just as a passenger...
Sounds like you want a Rotrex.
Nope. Rode in a J32A2 powered Miata this month. It has all I want. Power, AC, PS, and smoothness. I'd even go with a J35A4.
@@johnross8939 YES! I was just going thru this after doing all my homework and I have a j35A4 sitting in my garage right now (literally got it today)! Going with OZ's kit, its been a long road but the J swap is pretty sorted now. I cant wait to get swapping!
I cry, I have done the same thing but with Getrag and Zf 6 speed. I don’t even want to add it up
I don’t have a true tally, just a mental one haha.
Nice! Do the same video about the vvt swap pls!
That should be next weekend!
Love this set up
Thanks!
Good video with Great information, Thank You! I'm doing a bored out 2.0 from McCally Racing and will have 225ish rear wheel horse power which I think will be ideal. Not sure if doing the same with your race car would work well for you or not as I know nothing on racing rules and classes. Perhaps it would be a good idea? I have a bunch of things I want to do before I drop in the engine and I got injured at work, lost the work comp case so money is extremely tight, so I'm not sure it will ever get done or not. I keep praying that somehow something will happen, so I can finish the car as I so love the Miata. Best Always and in ALL WAYS,
For now we’re planning on just using a stock VVT engine, but we do have plans for a bored and stroked high hp NA BP in the future.
Sorry to hear about your injury, I’ve got no doubt that you’ll come out on top in the end, just keep on it!
Have you ever driven a LS-3 V8 swapped Miata? How does it compare to your car if you've ever driven one?
I asked because the V8 is suppose to make 400+ whp as well.
I haven’t. I would love to though. They also make an extra 100 ft-lbs over my k swap, so I’m thinking it’s got to be maniacal.
@@NappMotorsports still yours in theory at least, is better talking weights ant distribution..
My questions on the V8 vs the K are:
a) How much more are you paying for the additional HP of the V8 over the K ?
b) How often do you use that additional HP ? If not too often, then your marginal costs in question "a" theoretically increase on a per use basis.
c) Are you really able to use that extra V8 HP / torque ?
d) How much margin of safety are you loosing going V8 ?
e) How do the resale values compare and difficulty in selling the V8 vs K swapped car ? Start and finish with an empty space in your garage, buy the car, do the swap, drive it, sell the car. What's the net cash outcome ? Yes, I know, we don't do this for the cash flow but we can't ignore it either.
Sorry, this is what happens when accounting gearheads think about doing engine swaps.
Your 10-12k estimate, I assume that's before boost? You mentioned in one of the earlier videos you're about 6k into the turbo setup. So are you around 18k into the swap then?
Yeah that’s a pretty fair estimate. 12k without boost is about where I was.
I’m considering superchargering my 1.8 94 and swapping some NB stuff over like the VVT heads, the 6speed transmission, etc. just for a fun street car. Any thoughts or things you might know about supercharged 1.8s?
Make sure you have a good cooling setup. Superchargers like to put a ton of heat.
If shooting for for na engine how about an NC with 2.5 swap with bolt ones. 🤔
We've talked alot about this amongst ourselves. We both really like the NC and this should make for a great all round platform.
Best cost to entry track car right now with finally a rapidly growing aftermarket for tracking now that the costs have come down for the vehicle.
this makes me want to turbo k24 my brz so bad. I'm curious if kpower is going to use the k24z for that package 🤔
I have it on good authority that they have a test manifold for the K24Z3 BRZ/FRS turbo setup. No idea on their timeline though. I’m sure if interest was expressed to them, they might move on it!
@@NappMotorsports good to know thanks!! I'll be sure to keep my eye out
Do you swap the gearbox to a honda too when shooting for 4/500 hp?
Thanks
400 or less, no just the Miata 6 Speed. More than 400, the BMW transmission is your best bet but that also has it's own vibration issues, and it's expensive.
What is your opinion on a K24A2 with a MercRacing MR1900 TVS Supercharger Kit? I'm really only looking for about 350 whp on a NC Miata. Thanks.
Looking back years later now, I'm very cautious about K swapping anything that isn't a Honda. Personally I won't do it again to any car that I own.
I have an Element and was thinking about getting a Miata to put its k24 in, so it will live on… Is that stupid? lol
It burns oil, so I definitely would have to have some restoration (?) done to it/swap internals/etc.
I mean it’s a lot of work haha. Having the engine is the cheap part.
A full build NA free frum rust and so on with this tune plus Breaks, rims, seats ..... Is about 30k
For same price you get ND wirh 225 hp tune
Sure, if you’re into driving a stock car
@@NappMotorsports
Well, a fully build NA might be even 40k, so a fully build ND If you Take it used Basic, will also make 40k
Has anyone here driven a 1.8 Rotrex with over 200whp?
Coming from an FFS supercharged 1.8. Looking to have a fun responsive street car that can be driven hard like NA (full throttle time) and also be tracked with no worries. VVT motor is the base.
We have not. My concern with tracking an FI Miata is just the immense heat that the systems put out. It heats all components of the car up and makes reliability take a huge hit. It sounds like what you want is a K24A2 swap.
@@NappMotorsports except I've already got a 50k VVT motor, ecu, injectors and trans.
Plan is to drop a k20z3 with a supercharger in my nb to start and once I get proficient at sliding and controlling that then I’m gonna twin charge it.
Sounds like a headache to me haha
@@NappMotorsports it’s gonna be. I’ve accepted that 😂. But the result will be worth it
DID YOU SAY RELIABLE TOO?
It was, and then it wasn't.
Considering this for a fun weekend car - interested if it's lighter than the BP motor and too loud for driving a good distance?
It’s lighter allegedly by like 30# from what I’ve heard. Not sure on the validity. And they can be made as quiet as a stock Acura TSX if you really want.
Wondering how similar the 124 spider is to the NC engine bay or is it closer to ND1? Would likely be going all motor K24 with K20 head with the tiny Garrett turbo from the tired Fiat multiair if possible. Looking for a fuel efficient 250hp setup that can go 500k miles.
Fiat 124 is based on an ND.
@@NappMotorsports NC trans, ND1 chassis is what i found. really confusing.
Teetering on the brink... Currently stock 1.6. Already bought a JDM 1.8 BP 5a + 6 speed, and a 3.91 Torsen package (nothing installed yet). Car is just a summer/weekend cruiser. Leaning towards turbo and Haltech Elite... Trying to keep costs down ;)
If you’re going turbo, some rods are cheap peace of mind!
For a 300whp build, how would you spec out the engine? Im currently saving up to build this.
Drag cartel head build k20z3, 11:1ish k24 bottom, itbs or center feed intake manifold. May not quite get there but will be damn close and be streetable. What I'm currently shooting for with my build
@@MrDillbaby i was thinking of going k24a NA. Ive been eyeballing stock k24a block, k20a head, dc cams, and fuel mods I should be around 260 wheel. As a street car in the south east at sea level with 93 octane, that should put me close before doing bottom end and port work. I still love torque but don't necessarily want to have turbo power on this build.
For 300 NA, definitely on board with what Dillon is talking about. The K20Z3 is different than the K24Z3, so my reference of a Z3 in the video is always in regards to the K24.
Either I'm dumb, or I can't find much info on kswapping a NC.
I think it’s very rare.
My biggest question about K swaps... Is there a way for them to be quiet? EVERYONE comments on how loud they are.
I mean sure, you could make them as quiet as the cars they came out of. The reason everyone makes them so loud is because K’s make the most power on a 3” exhaust, and we’re all in this for power.
I so want one. Unfortunately, $12,000 or anything close to that is not doable. I still can't believe it costs $12,000 to replace one 4 cylinder with another one. You can get a c5 corvette for close to $12,000. Also, if you turbo the k there is no way the stock transmission will handle it long term. The stock transmission can barely handle a turbo 1.8l. I believe you could do a full lfx drivetrain swap for close to $12,000 or even less if you know where to shop.
You're not wrong about anything here, but it all depends on what you want. If I wanted to go out and buy a C5, that would've been an option, but I'd rather build something myself. The NB 6 speed trans is holding the power quite well for now on the turbo setup, and if it goes, I'll likely swap another one in. They're known to handle 400HP. The 5 speeds are bad over 250 typically.
I understand and agree about building your own. I have a 1999 NB that I really wanted to build. Was really excited when they began talking about the z3 swap being $2000 less than the a2 swap. I didn't know the 6 speed could hold 400 hp. Most reports I read said 300 ,and with them going to $900 in my area they have become a costly replacement part. I guess I'm just not in the tax bracket for a kswap miata. :)
I'm just starting on my basic turbo BP4W miata build with stock internals and gonna stop it there. Already sunk over $5k into it. Any more mods after that and I'd be kicking myself for spending that much on not a K swap lol. I'm just hoping I won't crave anymore power once I've gotten used to the gt2560.
You'll have more fun in a turbo BP than in an NA K in my opinion. The torque just isn't there in the NA K Swap like it is in a boosted application.
Will this swap work the same on a 2001-2005 with the 6 speed?
Yes you just need the 6 speed slave.
I want to know how much it changes the weight of the Miata
It’s a fully aluminum block, so I’ve heard rumors that it’s barely lighter but I’m not sure.
Will need to meet up next summer to compare!
This would be awesome!
I still think that if you're gonna spend the money and time it takes to do a swap an aluminum ls is the way to go. Extra weight? Yes. But the torque a reliability is unmatched
While I think LS’ are cool, it’s not all about making the most power possible. I wanted boost and I didn’t need 400 ft lbs at 1500 rpm. This thing barely hooks up at 315 ft lbs. More would be pointless without hacking up the body for wider wheels/tires.
So in terms of investment, it's cheaper to buy a ND 2 and settle with the 190 hp....😊
Yes
Digging the channel fam
Thanks man!
Great video! Now I have a rough number of what to save for! Recently got a miata (NA 1.6L) as a project car, definitely craving more power in it since my daily is a WRX. Both very different machines, but I feel like the miata is just missing that power especially overtaking on the highway.
Congrats on the miata! As much as I love power, suspension is the best mod on these cars. If you have some fun back roads near you, suspension goes much farther than power!
@@NappMotorsports Luckily the car already came with extra bracing and upgraded sway bars, I was thinking brakes + coilovers next before adding any more power. Also possibly swapping the rear diff, its the 4.3 viscous LSD, so swapping for a 3.9 torsen
what clutch are you running to hold the 4-500 whp
ACT 6 Puck with the Extreme Duty pressure plate.
2.1 stroker is always the answer.
Don’t worry, we haven’t forgotten about doing a big NA BP build 😉
How about the vibration? That’s my biggest concern.
It’s no that bad, but if you’re expecting OEM levels of vibration, this isn’t the swap for you.
I loath how manufacturers are moving to integrated manifolds… for multiple reasons, not just hit rodding purposes, like it better not ever crack!
Makes going turbo way easier.
Are you going to MATG?
Yup!
Does this work on the new generation miata's??
They just released a kit for the NC
What about a K20? Does that fit with stock subframe? I have an RSX Type S and that K20 in a Miata NA or turbo would be pretty awesome.
I’m sure you could make it work, but I haven’t seen it myself.
You're making me really think about putting that in the E46 chassis...
Great summary man.
Thanks Andrew! I think it’d be a sick E46 swap for sure. They’ve got the E30 kit right now which would also be cool.
E46 subframe interferes with the oil pan. You'll have to go with a dry sump (expensive) or a rather complicated external oil pump relocated oil pickup setup from tractuff that will take some custom fabrication.
0:43 i just want to keep up with the traffic
😬
I have an nc but I want to build it
Do it
@@NappMotorsports idk where to start 😭
Are you in Indiana?
Rochester, NY
is there a way to do a k swap but have the NVH close to stock?
No
Is k20 a option?
I’m not sure
Would you help with my k build
In what sense? Feel free to send me an email and I can talk it out with you.
Does a V8 add too much weight. ?
I believe the Monster Miata kit only changes the weight distribution to 51/49 Front/Rear so not really.
700$ for that manifold is crazy outrageous price
You’re welcome to design your own and see what it costs you. I had the first one made and it cost me over $1000 in materials and machining cost. Not to mention the time spent testing and redesigning until it fit.
How is this motor for drifting
No idea
most dope
No rotary?
Never
I would love to live in a place where a k swap is street legal 😒 California has its drawbacks
Good ol cali
Thats not calis only drawback bro. Move.
I really want this... but money..
It’s only money!
Rochester ny?!
Yup!
@@NappMotorsports I'll be in Rochester in the middle of june and would love to see what a boosted k swapped miata feels like before i bite the bullet and do the swap. Let me know
what about f20c swap????
Way more expensive for no real gain.
A good swap I’m betting is 10k because you’d be an idiot not to rebuild the trans and freshen up the engine before installing everything the final time and driving it.
lol I was at $12k before touching the trans.
honestly with the cost of this nowadays your better off with a 13b and it wont sound like a honda
Except rotaries suck to own
@@NappMotorsports true that
To think i was gonna be watching a video of the thing driving. Jokes on me i guess
RIP
I want to k swap an ND2
They make about the same power stock
I LS swapped mine for less than that
I don’t doubt it
Heck yeah bro and I gonna build a oem engine to the max first but 💯 fact when I do anything further it will be a kswap for sure just cause the potential of the engine and its high reving capabilities... or a rotory swap but I still studying them atm 😋... n e ways bro I think the K swap is radical af my guy ... 0eace n love build on and stay safe ... ps I in nc so maybe one day we can run the dragon 🤷🏽♂️.. n e ways stay safe and rad l8r
🔥
Just turbo a Miata , call it a day.
I now agree with this.
LS is cheaper and more hp think about it
But also a totally different experience.