Turbocharging/Supercharging NB with automatic transmission
 

Owning a 2004 1.8 NB with auto tranny.
Miata is an-anti stress toy, but need more power to take away this stress much quicker and get more fun :fawk:

Was looking to make a swap of engine from MSM, because it has:

Factory supercharged egine
Manual Transmission
LSD


But after reading this thread ( [NB] Mazdaspeed swap (into '02) - MX-5 Miata Forum ) understood that this is not a good idea at all.
Turbocharging/Supercharging would be better in my case.But i would prefer Turbocharging as i really find supercharger noise annoying.

The question is, any of you guys had an experience or any info on turbocharging of an NB with auto transmission?
Any mods must be made with transmission before going on with turbo?

Would be glad to get some threads and articles to read and get useful advices.

oh my.............:facepalm:
don't even know where to start

in for eggplant

Just start, and we`ll see :)

But please do not advice to sell AT and buy MT one.My Miata is the only one Miata in our country.And due to law limitations there is no possibility to import another one to our country :) Thats why I`m thinking on such crazy things ))

The main goal is to have a daily driven auto, which will be very fun to drive

ahahaha do what ? )))

it...

Thought i could get some advices and help from you before I do it, but it seems like i was wrong thinking so...

in what universe is a MSM supercharged?

I was going to make fun of you but looks like you're from some 3rd world country, so there's probably a language barrier, among other things.

So here's a serious answer:

there are plenty of turbo and supercharged auto miata's. they tend to hold 200-250whp just like the manual ones.

So turbocharge it.

What i don't get is... if doing a manual transmission swap is out of the question, then how on earth is an MSM motor/rear end swap even a possibility?

MSM is a Turbocharged one :) I do know this.
200-250 without transmission mod?And even without AT fluid cooling?

Well, I tried to find out list of pieces for AT to MT swap, so I could order them from USA.But unfortunately could not find any info on it. I case of MSM swap, technically it is much easier, as I could just buy a damaged MSM from auction and move all the stuff from MSM to my Miata.
But as I told at the beginning of this thread, swaping to MSM has some disadvantages like VVTi lose and etc.

That is why I begin thinking on turbocharging my Miata.Was worried, if auto transmission will be able to handle about 200-240 HP.But as 18psi told, auto tranny will handle this power with no probs

At first, I read it the same way. Now, I think he is saying he cannot swap entire car, but he can swap parts.

Vlad, is the stock auto transmission control separate from the ECU? Or will the aftermarket ECU have to control the transmission?

AT to MT swap is easy.

But you said you couldn't do it because you had the only miata in your country. But this means there wouldn't be an MSM in your country either.

I don't know, i'm confused.

Personally, i'd go for the MT conversion FIRST, unless you've had some horrible accident that left you with only one leg that you haven't told us about.

Exactly

I can order a salvage MSM from USA and import to our country as spare parts, not like a complete car

Automatic transmission control unit is separate from ECU.
Decided to use MegasquirtPNP Pro as an engine management.
Gonna use 2003-05 Voodoo II turbo system(without their fuel management)
Gents, any advices on injectors?
thinking on using 350cc injectors.
Should they be enough?

If you are using a megasquirt there is no real downside to getting MUCH larger injectors.

IF

You get the right injectors ;)

I'm sure a quick know search of the forum will point you in the right direction on that particular topic. Your avaliable fuel will also play a role in you injector selection. Where are you located? Do you have access to 91 or 93+ octane unleaded? E85 maybe? You may wish to consider putting a fuel pump on that shopping list as well. You will of course be running a wideband, yes?

*COUGH* *COUGH*

<<<<turbo'ed a AT

The AT computer is indeed separate, I ran a MSPNP just fine.


Just get some RX-7 460s, walbro 225, and call it a day.


BUT from my experience, the AT doesn't handle 16+ psi very well in the first gear clutch pack, tends to slip-- i recommend doing a 5-speed swap

Well, surfing a little bit the forum, found that RX8 450cc fuel injectors would be fine(Besides, Pen2_the_penguin does reccomend RX7 460cc injectors as well).
I do have access to 95-98 octane uneladed, no e85 :(
255 Wallbro allready installed and running.
Of course, wideband will be used.

Cool.Did you use MSPNP Pro?
Going to run near 8 psi.
User 18psi told that if not to abuse it too much, factory transmission will handle 200-230 whp with no probs.

Azerbaijan. And for the folks playing along at home who don't know where or what that is, it is a central European country that was a republic (SSR) in the USSR until it declared independence in 1991, shortly before the USSR dissolved. (As to the comment about the OP being from "some third world country," when it was part of the USSR it was technically a second world country, since the division of the world into three parts (something Julius Caesar started when he began his book "The Punic Wars" with "All Gaul is divided into three parts ..." (well, as I'm sure we all learned when studying Latin in high school, he actually begins the book "Gallia est omnis divisa in partes tres, quarum unam incolunt Belgae, aliam Aquitani, tertiam qui ipsorum lingua Celtae, nostra Galli appellantur.") was first world = industrialized western countries; second world = industrialized Soviet bloc countries; and third world = less/non industrialized countries. BTW, any guesses as to which of the three "worlds" invented this division? :idea:)

And the country is developing a road racing tradition; see: Baku street track set to host Azerbaijan’s first GP in 2016 is unveiled | Sky Sports

I was wondering about fuel, too, but if the OP is running an '04 Miata, and the country is hosting a Formula One GP, then there must be relatively high octane gas available. There may not be another Miata in the country, but I expect there are a number of high dollar European and Japanese sedans and SUVs that need to be fed and kept happy.

Bill (who really did take Latin in high school; of course, the language wasn't quite as dead then as it is now. We had toga parties long before anyone heard of John Belushi, and Animal House was not even a thought, much less a movie.)

Besides firmula one, city challenge gt3 race are taking place here In Baku every year.
Features & Highlights | City Challenge

And you are right, here are a lot of european, japanese and american Sedans, suvs and sportcars.government is propogating and developing autosports for last couple years.in 3-5 years a formula one track is gonna be ready for events.

All respect to Jeremy, but stay away from the RX7 units as they are oldschool Bosch EV1 technology from like the 70's. The RX8 injectors are a great budget choice as they are a much more modern design. The new hotness is the Bosch EV14 technology as found in Injector Dynamics or Fuel Injector Clinic injectors. That should give you some direction to read up on.

18psi is Russian, I'm sure he understands. ;) TBH, I was expecting something random like Sumatra or Nambia or whatever. Having "the only miata in the country" is a little hard to wrap ones head around.

And thats totally cool, but remember, I have no idea what kind of fuel is available in Sumatra ;)

That's bitchin. I love motorsport but I grew up with Laguna Seca in my back yard so I'm a little spoiled.

I'm super interested to see where this is all going. Are you going to start a build thread somewhere?

Great, will look for RX8 ones

I can start a thread about racing events.The closest one is Baku City Challenge 2014, which will take place on 1-2th of november.
I will be in staff crew in the place, where those races will take place, so a lot of photoes can be made directly from workshops and garages ;)

I`m a little bit confused, as Flyinmiata.com says :

"Q: I have a 96 Miata (1.8L Automatic). Can this engine and trans configuration handle a turbo? If so, at what boost and what HP at the rear wheels without destroying the trans or engine?
There are a few automatic Miatas with turbos running around and they are not having any transmission problems. You may also need to modify the downpipe slightly to clear the larger bellhousing of the automatic. For your 1994-05 automatic car you will need to buy a Voodoo. Our FM II will not work on the 1994-05 automatic cars because the FM II replaces the factory ECU. The factory ECU operates the automatic transmission on the 1.8 and our ECU does not. 1990-93 cars can use the Link or Hydra ECUs if desired."

Please comment on it

It appears FM is saying the ECU does not operate 1.6's with autos, but it does in the 1.8 cars. What year car did you turbo Pen2?

Look at this, and see what you think:

2004 Wiring Diagram

Noticed transmission Control Module on page 6.
So in case of 1.8, ECU is not messing up with transmission, right?

Looks like it still has a separate control module. No idea what FM is talking about.

I have a 1.8L 94' miata, and the module is indeed separate.


As for RX7 red tops, I will admit i had to make a low-impudence resistor pack for my injector harness, but ive havent had issues. RX8s are plug n play though

https://www.miataturbo.net/attachmen...ine=1412884837

Thank you, everyone for being nice to Ahmad. I'm certain he is in a difficult position having only one of three Miatas in the city of Baku (please reference his "Meet and Greet" thread from last week). Many of us are spoiled by having so many Miatas and so many cheap resources in our own language. And thanks to Bill for being extra nice.

Please continue.

I was running 15psi on my auto NB... ran all of it when the boost controller went out. That's the reason all 4 rods got bent and cracked the ring land of #4.
BUT the auto trans never puked, even though it had 220k on it. It was rather odd though, it also would wind out a bit before shifting. It was nice sipping coffee in traffic then get on it when I needed.
Did conversion to 6spd now.

Cool, how long did you run on it?

About 9 months, tracked it twice at Barber. Honestly, I had planned to do the 6spd swap expecting the trans to blow. Engine went first. I had it tuned at 225ish.
The "odd" thing mentioned was it losing power in the converter - just like a slipping clutch that slowly engages - but all the time.
I "heard" that the miata auto is the same as in the fd autos - truth? I never researched it as I didn't care.

im not sure about the FD autos, BUT it is INDEED the same automatic transmission used in 1980s 300ZX turbos. I was able to get a boost referenced vacuum shift modulator from one and it created better shifting.

here is a old video of a 0-60mph in my turbo auto

Cool,

My Miata shifts on 5500 rpms, how did you make shifting on 7000 ?

Tranny ECU Tuning?

Nissan 300ZX turbo boost referenced, and adjustable vacuum shift modulator, its like a 12 dollar part that you just replace the oem shift modulator with.

So i just need this adjustable shft modulator in order to rev till 7000 while shifting?Was it an bolt on part?or some customisation need to be done in order to replace this shift modulator?

its a direct fit-- like i said before, the 1980's 300ZX turbo used the same automatic as mazda

Cool.

Maybe you can tell me, how much can i rev without harm to tranny?

You can rev it till it shifts. In your final gear, you'll probably hurt the engine before the transmission.

Hmm why?
While with manual tranny the engine can be spinned up till 6500 , before shifting.why it cant be done on auto?

I was partly being a smart-ass. Just change the vacuum shift modulator like Pen says, and you should be able to shift at redline.
What I'm saying about your final gear is that sustained high RPMs will likely damage your valvetrain before your transmission. You can still spin it to 6500 if you choose.

Youll really have a much better time than having a turbo just having a manual swap. I promise you the tightly geared manual is the BEST part of owning one. Blasting down a back road shifting and pushing the car is the best time in the world.

The probkem is to get full set of parts.As mentioned before, i'm far away from USA and my Miata is one of thre i our country

How about being considerate AFTER reading and realize that doing a auto/5 speed swap just isnt possible for him, and making him repeat himself like a broken record isnt helping the questions he's asking. This isnt your thread, and if you have nothing of value to contribute here, gtfo.

axmed, turbo your NB and make it moderately boosted and you'll be having fun in no time. Remember, you need the adjustable, turbo referenced modulator from a 1988+ Z31 300ZX turbo after you get all your turbo parts and ECU. Like monk said you dont want to be redlining it all the time, however; But i didnt have a valvetrain issue, my issue was my first gear clutch pack giving out and shuddering, but I dont fully blame the 16+psi i was at, it was a junkyard tranny

Guys, lets respect each other and please stop it :)
Peace to everybody!

I cleaned things up a little more in this thread. We need to read the information posted by Ahmad and respond appropriately to his needs. I don't care who started it, but you are both wrong and acting childish for continuing in this man's thread. He needs help. I take this seriously. I'm contemplating making you both sit out for a week for this foolishness.

Sorry, Ahmad, for the interruption.