~400whp
 

Hi guys! I'm new here and would be delighted if you guys could help me out with my 400whp goal.
I drive a 91 na6. After searching on this forum, I found out that my goal can only be met with swapping a 1.8 and turbo charge it with one of those turbo kits in the market (correct me if i am wrong..). And I can't afford a v8 swap atm.
I am interested in the FMIIR kits, the hp gain seems so promising.
So, what are your opinion and suggestions to my problem?
Thanks in advance.

400whp you need to completely replace drivetrain, build the motor, and run a lot of boost. I estimate 8k at least.

If I was you I'd get arttech or absurdflow hotside parts,BW EFR turbo, build a motor with VVT, get XIDA CS, FM clutch, Reroute, maybe WI, and a rollbar.

There is a reason no one here runs 400whp (see failflora build thread). These motors can't handle that much power for very long. You'd be surprised how fast a 250whp miata is...and you won't be breaking 6 speeds.

It can also be done on a 1.6. You can achieve the same results on a 1.8 with lower boost settings and better spool.

On the 1.6, you need a big turbo (genuine Garrett 3076 or similar flowing turbo), header manifold, properly sized intercooler, cams, standalone ECU. I've tuned one and got 327 crank hp / 248 tq at 14psi and 407 crank hp / 340 crank tq at 26psi.

thanks a lot for the replies guys. I will look into it.
Is it worth it to swap a 1.8 then turbo charge it or just use the existing 1.6?
I apologize for my stupid questions, I just bought my miata and fell in love with it instantly haha.

Am I wrong in saying that if you can't afford a V8 swap, you can't afford 4 cylinder 400hp? Assuming you do all the installation work yourself on both, buy a used V8, and replace the transmission and diff on the 4 cylinder scenario just like the v8 swap. Don't think it can be, if it can, it'll be very close.

Why is 400whp your goal? Did you ever ride in a miata that makes 300whp? Hell, mine makes 200whp and it's respectively fast, 300whp is really fast. I'm talking fast as in, LS1 cars and new mustang 5.0's have a hard time competing with it.

(Sent from phone via capitalism)

Built 1.8 with vvt. Everythiing else one off custom designed for power and flow

400 whp is slow.

Speed is relative, however, it's slow in my eyes.

1000whp is slow. Everything is slow.
Honestly I don't even know how people can bear driving anything under 2500whp. And even that's only on a daily driver.

If you can't afford an SBC swap, you can't afford a 400whp turbo set-up.

Show us pics or a vid of you "loving" it, preferably with your mouth.

that's actually quite true. If your "budget" is under about 10k you should stop wasting peoples time

I see mad drifting in the future.

400 ponies!, not without flame suit.

Where are you getting this power goal from?

What you really need is a motec exhaust, and direct port nitrous injection.

2 big ones, right up the ass

I see no additional posts in the future.

OP, while you are busy pulling numbers like 400WHP out of your ass, you might as well dig for another $8-10K while you are at it. When you have that come back and we will help you spend it and you WILL have your goal of 400 WHP.

http://i284.photobucket.com/albums/l.../2dbjbli-1.gif

Agreed.

If you can't afford an ls swap, you can't afford a 400whp turbo setup. The price tag for a setup like that is around 15-18k. Sorry.

I don't think the OP has ever been in even a 200whp miata.

How realible can 400whp miata engine be? And I know anything can be broken to pieces in one go but in general, will it do 55, 5k or 25k before rebuild with proper parts, right minded owner and good service? Just comparing to 944 turbos there wasn't really any 400whp that would stay together long.

Seems like if you've got the money for a 400hp miata build, you get the itch for either more power, a v8 swap, etc. We've had a couple that come close to 400 and than get bored and move on. Take Failflora, he might hit 400, but it'll either blow up, he'll get the itch for 500 and blow it up at 500, or he'll be sad he's not working on it anymore and he'll part it out for a 700hp lesbian SUV.

Now I cant stop thinking about said SUV. Lets hear more about this.

lovin the shit out of my 315whp lesbian suv:giggle:

https://www.miataturbo.net/attachmen...ine=1323396809
https://www.miataturbo.net/attachmen...ine=1323396809

But curly is right: there are very few that actually drive the car for tens of thousands of miles with that kinda power. You're either in the sub 300 and drive it for years, or go balls out and do something ridiculous but not drive it much.

Forresters are known lesbian cars, that is all.

someone send me a subie map that will get me 300+whp in my OBXT please on the stock turbo and injectors/pump. I'm LAZY damnit! I just want to reflash and glance at my wbo2 to see if it's ok and learning view to see how bad my boostleaks are.

My budget for 500rwhp is $10k before selling the 1.8 stuffs. Its looking undoable even with my jelly connections & making most of the one-off bits myself. $10-15k initially seems like a high number until you spend 5 minutes with Excel and the little sigma button. As you estimate conservatively all the little bits and watch the total, you will quickly say "oh fuck". LS swap would be cheapest IMHO.

This thread reminds me of the "guages for 400 hp miata" thread few months back lol.

https://www.miataturbo.net/attachmen...ine=1323441854

even hermione saw this troll.

That estimate actually sounds about right. The only reason that I have not gone with the LS swap is because you have to outlay most of the cash at once, or in a short time period. As opposed to with the turbo route you can spread it out over several years.

https://www.miataturbo.net/attachmen...ine=1323443357
Ching chang chong!!!

How many people here actually have a 400+ whp miata? Anyone have any vids, I cant find any in the media section here or on youtube beside's dyno runs.

JayL and HFmx5 both have some decent vids. failflora made a shitty ass vid too when his car had 400 for like 2 weeks.
couple others too that I forget, but not that many.
Everyone else is a poser that talks shit on the internetz claiming 600whp when their car is in pieces.

Matt Andrews' old car.

jtothawhat has one, but I've never seen a video.

What about Jman, how much is his monster?

A 400whp NA would be in about he same ball park as a 750whp 03-04 cobra as far as power to weight ratio goes. Try out 250hp and i have a hunch you will be pleased. Soon as you make anything over about 350whp you might as well make 500 because everything thats going to break will have already been broken and replaced. You would have to spend at very least 3000$ just on driveline components to hold up to 400whp reliably.

I have one. Other than a few teething pains (erratic fuel pump, ignition set-up issues that were fixed with a new type of plug, broken stock turbo studs), it's been rock solid. I've put about 20K miles on it and am not afraid to drive it across the continent (and have).

Here's a vid of me autocrossing, although it should be noted that I turn the boost down to help eliminate wheelspin. Nothing on camera of me embarassing much more expensive cars - sorry.

Let me confirm Sav's comment: The budget required to do an engine like this correctly is, shall we say, extensive.

Deerhunter, have you ever had that car on a sea level uncorrected dyno?

This is what I was looking for....or tracking/drag racing/drifting/acting a fool/ect. Just something that shows the 400+ hp anyone car to post some more links? I remember I saw a video on youtube a while back of this miata chasing down porshes and ferrari's I believe on a track with a bumper mounted camera. Anyone know that one?

Hey, nice forum name... :cool:

I haven't seen many video's from the 400whp guys.

Here's a few examples of how a full weight 300whp NB does:

Stock 2011 LS3 C6:


Stock 2011 5.0 Mustang:


500whp Cobra:

Hey now my car is not running because i have an undefeatable clutch


preach it like it is sistah!


sick CDM mustang!


i have youtube vids. look at my build thread. see sig. I probably was putting down around 400ish depending on dyno before i took off my GT30. 26psi or so.


You need more power pdexta to stop the rape



This is just a circle jerk thread but here's the build list for 400hp.

1.8 longblock $400
pistons $500
rods $400
gaskets n bearings n shit $700
machining/assembly for motor $100
6 pseed tranny $600
some posi diff $300
sickass artech hotside $800
sickass downpipe and sexhaust $1500
wastegate $400
turbo $600-$2000 (go borg! don't support the garret chra rebuild syndicate!)
intercooler $500
pipez and fab $300
EMS - $500-$2000
injectors - $500 (1000cc or bigger)
fuel pump - $200
COPS/LS coils and wires- $300
sickass gauges and sensors - $400
tires - $600
Water injection shit (only if your gas is shit) - $400

Damn that is $10100 so far. I am forgetting lotsa stuff probably. Note that if you go this far you may as well go for 500. or 600...

Unfortunately, no. Dyno work at FM was done at just under 5,000 feet (uncorrected numbers were 355 rwhp, but high-boost tuning was stymied due to ignition woes that had us chasing our tail) and since then I've done essentially no tuning. This fall I put it on a local dynojet (2,000 feet) and ran just over 300 rwhp uncorrected at about 18-19 psi with some pretty wonky A/F ratios. I plan to do some proper dyno tuning next year and see if I can smooth things out a bit. The car is still scary fast.

Hey,OP, I will sell you my 400hp set up right now. Just PM me.
Engine, turbo set up,engine management, transmission, and rear end. Get at me...

Tell me about your queef gears. What power can they handle?

If anyone "happens" to show up with my name, you are either very clever, and atleast as cool as I am (not possible) or someone I will punch in the throat.


Shoulda gotta V8? I figured that out once I got past the point of no return. Hind sight is 20/V8. In short, after I built my car, and sav's post, I shoulda hada v8a.

Hey fagwad, I still have that input shaft if you need it, for reeelzs. :fawk:


LOL.

All that I can make (and probably a lot more). It's a nice box - IMO it shifts even better than stock. The only drawback is that the semi-straight cut gears are noisier than OEM. Running through the gears, gear whine almost drowns out exhaust noise (although it does sound supercharger-like). Fourth is quiet, being 1:1, but cruising in fifth at highway speeds for any length of time calls for earplugs.

small inboard vid showing me and passenger(3-4gear pull from 70kph to 185kph)


testing and fooling around on a trackday, passing some cars, but shitty camera angle. car will easily pass a gt3rs on the straights, and for comparisons, only car that could keep up that day was a ESS supercharged M3


400ish whp na, is silly fast, like embarrasing pretty much anything on 4 wheels except supercars.

I....want....toooooo.....seeee...ooooovver the dash dammmmiit. :vash:

Looks like fun though.

For the millionth time, I'm in love with your car:drool:

V8 route ain't available here, max 25% bigger engine so from 1.8 I can go to 2.2 and only V8 that is close is 2.0 and made by Ferrari and that has 185hp. Crate engine of 2.0 seems to go for 7k$ so... :jerkit:

Stupid question, have you ran against supercars on track? Not on highway pulls maybe, but I don't see why you wouldn't outrun those on track.

I have had a 180 rwh NA and now have a 440rwh na. Same car but did a LSX conversion. For me finding a tuner that would allow me to go more on the supercharging was difficult to say the least. Bad tuning cost me the last 1.8 so I decided normally aspirated with a factory tune (ish) was the way to go. A motor that only put about 180 pounds on the car in total but has given me over 400ft of torque at 1700 rpm.

The funny thing is even though I can pass a viper ACR and GT2 , R8 and such the supercharger was equally fun to drive and on a track would suggest a turbo would be even more fun from a sensation sense. An LSX hits so hard with it power so low you get the intial hit then it just keeps pulling but your sense of speed is gone. My miata is fast based on the numbers and cars I can pass on the straights but it doesn't feel it.

Power is a funny thing....it is not just the power but how it comes on that makes the ride satisfying. If you just want to pass people as the motor stretches it legs that is one thing but if youlike to feel the surge and sense of speed I am not sure a big v8 does that. Mine is more like an electric motor.

The other interesting thing is the sound. Yes the V8 sounds amazing to those I pass but for the driver on the track I don't hear much. I do hear my friends ported and polished MP62 screaming behind me.

I looked at all ways of getting alot of power and agree with most that it doesn't matter what you build to do it right is 20K. Can be done cheap yes and be done well but if 20K scares you that should tell you something.

Lastly I would say 400 is simply a number...why not 500....bet it would feel about the same. Had my motor not quit I would have been happy at 250rwh but the car fully dialed in. If you start chasing power you will never be satified. You need to truely understand your goal.

I did not go out and search for 440. Instead I wanted durable engine that was overbuild for my application. Was designed to pull power all day long on a heavier car, had a computer that was open to play with if need be and simple that also go great gas mileage but super car power. The answer was simple LSX. Idles at 1600 on the highway getting over 32 mpg.

T

I hope you have a shitload of money.

One of the very reasons I;m going turbo instead of v8. The v8 feels is faster, turbo feels faster. Have had a ride and a few very powerful vettes, never really as impressed me as much as a much lower hp turbo car.

The turbo is also easier and lighter.

Depending on how one wants to keep the v8. If keeping the v8 stock, then one wouldnt have to tune a standalone.

never known Sav to be speechless