SR20 swap in NA miata?
 

hey guys i have been thinking about this for quite a while and have been seriously thinking or doing the sr20 swap , does anyone know what mods are needed to make the sr20 fit into the miata, just take into consideration i am a qualified welder and mechanic so normal engine swaps and metal fabrication is like a walk in the park for me, but putting a SR into a miata is uncharted waters for me, this would be my 3rd different manufacture engine into a separate automobile company chassis, any help and guidelines would be awesome,


Robert

Why not skip the bullshit and put a good engine in it if you were going to go through all that trouble?

Is you be troll brah?

I saw this swap done once before. The owner had to get all custom mounts, oil pan, ppf, exhaust/ic tubing, and a bunch of other shit that I can't remember. It was a long list and a hefty sum though. He ran a built sr20 that made 320wheel...I'd sooner just build a 1.6liter from the crank up. Just my .02.
I do love swaps though, especially crossbreed a like you're talking. If you do it, keep us posted :)

FE3 is the better option, Equal displacement, Can be found much cheaper (KIA Sportage), and can take a good deal of boost in factory form. Also has an easy way to bolt it up to the factory miata trans, or a Turbo II rx7 trans. The oil pan on an SR20 will take a great deal of modification to fit in a miata subframe.

Sr20's make good drift cars...u drift bro?

personally i like the idea of the SR swap but its really not a worth while swap. the mounts are pretty basic. you will need to make a custom oil pan and pick up to fit around the steering rack. custom drive shaft, custom ppf, and the wiring. the rest is common for any build. IC pipes/ downpipes and a tune. boosting the stock 1.6 or 1.8 can put you around the same base power level for a lot less $ and down time. its what YOU want. be prepaired to figure a lot out on your own. these not much info online.

i was thinking of going 13btt swap but im not sure you can run the tt setup because of clearance isues

nahh brah im not trolling you i really want to do this

yeah i would build my 1.6 too but the bottom end can only handle 250 before it grenades unless i can get work done to it or get a stronger bottom end either way i would end up putting the same amount into the 1.6 as i would making the SR fit

I'm curious why you would the SR came to mind. It's really not that special.

Why not skip the bullshit and put a good engine in it if you were going to go through all that trouble?

Now I know you're trolling.

If you work out the hp per liter, the experienced tuner at the dyno says if I had the 2 liter sr motor I'd have the same power, since I'm running the sr20 turbo. If that makes any sense.

So I agree, either do the fe3, or find a v8 in any truck, van, or v8 powered car in the junk yard and actually upgrade the engine.

Will cost way too much to do sr20. If I was starting from scratch I could have a well sorted, fully built bp (brand new shiny motor with 0 miles and awesome parts inside) for thousands less. I wouldn't have the headache of engineering afterthoughts either.

If you're going to motor swap fe3 is practical. Anything outside of the fe3 is going to be $$$ and no return on investment in comparison. power to $ ratio.

That said. BOTTOM line. 400+hp deserves a swap look. ANYTHING below is a waste unless you have time and money to burn.

I always think of sweet ideas for swaps.... then realize new platform... or i need to bust out the special helmet and drool bucket.

If you're dead set to put more effort/money/time into an engine swap rather than the commonly accepted routes for power, you should probably do a VG30DETT swap.

I'm just assuming you're a masochist.

There was an article from FM regards to FE3 option eh?

Isn't the SR motor all aluminum? Wouldn't it be quite a bit lighter than a BP, FE or 13B?

I my years of swap research, I came up with this:
If you're gonna swap in something that doesn't belong in a Miata, then it better be an LS V8. Don't waste your time with a Ford 5.0 V8 from the 80's or early 90's....
and don't argue with me about the fact that I just said that, because you will make as much whp and tq and you could with a turbo on a 1.8.
If you have to keep a 4 cylinder in a Miata, then it needs to say Honda on it. F20c, or a K20/24 engine. Don't even think about a rotary, or a SR20, or anything else. It's a waste of time.
2JZ? Here's a video about that:

Gotta get ready for race wars.

agreed! i rode in a ford 5.0 swapped miata once, no thank you.

I have my eye on doing an MZR swap. I want it to still have the soul of a Mazda.

I agree about everything except the rotary.

A 13b swap would be excellent.

Dann

There's a reason why people who own rx7's do LS v8 swaps. If you can guess what it is, you get 13 points.

So which is it, you are a qualified mechanic or a hack that has cobbled one engine swap at some point in the past?

Let me guess, you once bolted a b124c12456ge3-43 type rrrrrrr Honda motor into a civic right?

Because they are from america?

In australia we have this thing called 'All of the rotor records in existance'. So we have a LOT of great shops here.

Dann

I live 10 minutes away from probably the best rotary tune shop on the east coast. They also do LS v8 swaps. Why would somebody ditch the rotary for a LS v8? Better fuel economy, reliability, larger aftermarket avaibility, more torque, the list goes on.

I don't want to start a big America vs Australia argument here, but having records like that isn't impressive. You can have the record of most polished turd in existence and it's probably because no one else wants to bother.

Seriously, anyone who goes rotary and still wants plenty of RELIABLE power is a big idiot.

Not to talk shit, but the quickest ever Miata chassis in the quarter is powered by a rotary.

I personally detest the way the 13b sounds. The 3 rotor sounds pretty awesome.

I've seen a white Miata drag car, I think it was on Vimeo...it was faster than the rotary one I just posted. It was a 2.0 4 cylinder if I remember with some huge turbo and an unheard of amount of boost. I don't care enough to find it, cause those cars are clearly for drag use only. Take a poll of every person that ditched the rotary and LS v8 swapped...I'm sure they have no regrets.

Ironically, the drag Miata you are referring to is about a mile from my house as the crow flies. If you go to dragtimes.com. there is a rotary Miata that holds the #1 spot. It is faster than the BP powered car you are referring to.

I talked to the owner of the white car about bringing it out sometime. He is just not ready to do so.

This is the best one. Much glorious noises. 6 rotor, P port. I want one in an RX3 with flares and massive tires.

Australia/ New Zealand v the WORLD!! :vash2: Oh Yeah.

Although I'm gonna pull the New Zealand wins v the world in this case... (just like the rugby :giggle:)

That 6 rotor was built only about 8.5 hours from my house (as the crow flys). :facepalm:

no man i dont play with little kid toys like civics and integras i might be 18 and all but most people who own hondas here are complete douches and theres already a f20c swapped miata here so im not going to do that

and im a qualified mechanic not some hack as you call it


Robert

If you are 18 then you are not a qualified mechanic. :dealwithit:

doesnt play with kids toy, installs a kids toy motor.

Calling bullshit on this one. Even an 18-year-old would know that is a stupid and immature idea.


Since there's already LOTS of sr20 swapped Miatas too I guess we can count that out.


Nobody has swapped the 1L ecoboost turbo I3, I'm still waiting to see someone do that. With enough boost they can make the same 200hp as the sr20 so I'd go for that one OP. 200hp + 50mpg = winning :dealwithit:

If you have all this experience, then there's no need for you to be asking questions.




However, they're questions that CLEARLY have never been asked before! I can't believe nobody has ever thought of an SR20 swap before!

guys has anyone here swapped a BP into a miata?

That motor lives in an RX4. There's videos of it driving, as well as on the dyno.

Power. It makes it.

Yeah only like 815hp or something though... with like 40ftlbs of torque. I didnt post the dyno video because it sounds like crap with the exhaust pointed directly at a wall. And the track video is laughably bad.

who needs torque though.

its all about shifting at 10k and waking the dead on your morning commute to work

By 40ftlbs of torque, you mean "over 500ftlbs to the wheels across 6000rpms of powerband," right?

On an easy break-in tune.

Not one person on this entire forum has any room to laugh at the torque that thing is making.

But its a rotary, I'm contractually obligated to make a complete lack of torque joke.

Less talk about motors that don't suck, and more talk about spending lots of time and dollars in order to remove a mediocre motor...

...in favor of swapping in another mediocre motor.

Ive given up defending rotaries on this forum.
They have become infamous because they have been in the hands of boy racers so decades. If youre going to go race on a basemap or band-aids with no wideband and zero understanding of tuning theory, you should not own one. They cant take bad tuning, and unfortunately, out on the street, most tuning is bad tuning.

The torque thing is totally laughable. Thats the same argument made by domestic fags who dont understand the basic physics behind torque, power, and work. Which is what makes it hilarious that the NHRA super stock record has been set by "torqueless" turbo s2000, and the NHRA F/Dragster record is held by an even more torqueless NA F20C powered dragster.

Nope.

You still get butthurt and type a novel each and every single time:dealwithit:

K20 is a fag motor for cars with eyelashes

:laugh:

yup. still mad

Way cooler than original subject, and totally bone-a-ble, unlike OP. Great post Dann!

I thought we covered how much rotaries suck in the "should I buy an FD RX-7" thread?

It would be cool if someone had ~100 years and a few trillion dollars to throw at rotary development like we got for piston-engine development. But until then, I will take a modern piston engines that outperform them in every way.

Quad rotor bridge port or bust.

This thread! It went from bad to good to bad to really weird. I predict it will turn gay by the next page.

I would like to input my opinion after blazing my own trail and making and engine fit into a miata that no one else had done before and in this case very few have done. I would like to add just a few things. One if I could go back and start over I would put an LS V8 in my car hands down. Two make sure you pick an engine that you know a good bit about. Most of my time was spent figuring out dumb things that someone familiar with the engine may have already known. I would not suggest doing a swap that no one or few have done souly for the fact that it will take much much much longer than you could ever imagine and you may get frustrated and never finish. That is just my two cents. At the same time I love my car now and would not change it for the world it is cool to pull up to shows knowing 100% that you are gonna be the only miata with that swap something different from the norm.

Nah I don't think you understand Sean, OP is an 18-year-old pro mechanic. Any swap he dreams up will be a piece of cake.

You guys sure scared me away from them.

Now I'm considering building a wrx swapped GC impreza for a winter car. wtf is wrong with me?

After that thread I'm considering an F2T swapped B2200 for a winter car.

So I hope nothing is wrong with you.

nothing...anymore.

Acquire 4wd B2600. Swap in F2, or just boost G6. Unstoppable trophy truck hoonmobile status.

this was just supposed to be a quick Q and A not a whole thread on how stupid i am for doing some thing none of you ------s would even attempt doing my favourite part of all this has to be the fact you guys are shit talking about me being a "pro mechanic" and you know what i am a qualified mechanic i worked for Mazda for a year now and its been awesome but seeing how im not good enough to be a mechanic in your eyes seeing how im only 18 years old you can go fuck yourself so if you dont have anything serious to say about my question or any helpful insight as to how i should approach this build just stop posting in my thread, and before i get any "you mad bro?" post i am pretty fucking pissed that i came here thinking that ill find some people willing to help but all i found are douchebags who clearly dont know shit

Yup, he mad.

I will give you some advice. Use punctuation and capitalization.

I don't know what the fuck that is, but we speak english on this forum.

Congrats on having a good job at 18, but maybe a bit of extra schooling wouldn't have hurt.


And no, none of us would attempt an SR20 swap because we aren't angry 18-year-old children.