motorvated

Well im looking to turbo my car  A little about it. It is a 1990 1.6 5 speed. My motor is about to turn 200K miles, and though it runs perfect…I don’t want to boost it with that high of miles. I plan on swapping in a 60-70K mile 1.6. Im in college, so budget is in mind; so is reliability. I have seen on here many times that you can get a 1.6 upto 250 HP for $2K. 250 HP is exactly where I want to be. My budget is $2500 or less. Of course, less is better. I’ll be buying as many parts as possible used from forum members. This way, I can pick the pieces I want, and get quality stuff. Below is all the basic things I need (copied from the sticky) Under each thing listed, I’ve written what I plan on doing…or asked for some help on what I don’t understand. Any help is really appreciated! Feel free to answer in the thread, or PM me. Thanks for the help!


-1 Ignition Control
Mega Squirt PNP

-2 Adjustable fuel pressure regulator
Will I need this, since im going to be running a full stand alone? If so, what do you suggest?

-3 Fuel injectors
I want to run RX7 460s since they are PNP and handle the 250 HP I want

-4 High pressure fuel pump
I don’t think I’ll need one correct? Again, because I’ll be using megasquirt

-5 o2 Signal Modifier (o2 Clamp)
I assume I’ll need this even with the Mega Squirt?

-6 Boost control
I plan on using a GT2560 T3 turbo, which has an internal waste gate. As far as EBC goes, I can take car of that with the Mega Squirt.

-7 Intercooling
Im saving this, as Im not sure what to go with yet. I don’t really want an over the rad setup, and I’de like to keep my AC and power steering. Any advice on what intercooler, would be exceptional.

-8 Blow off/air bypass valves
I could use a few different types, since I’ll have stand alone. Do you recommend vented, or sequential? Or something different..

-9 Clutch
My clutch has 15K miles on it.. when it starts to go, I’ll worry about it.

-10 Exhaust system
I already have a 2.5 inch exhaust system, so all I’ll need is a downpipe.

-11 Heat shielding
Havent looked into this yet either, though I will probably make something for this.

-12 Oil Supply and Return
Another thing I haven’t looked into a whole lot.

-13 Rear End
As far as the rear end, I’ll be swapping in a 1.8 rear, or something out of an RX7


I’ll also be including a wideband 02. If there is anything im missing, something you want to add.. PLEASE let me know.

jmnight

iTrader: (6)

Your list looks to be complete except for a turbo and manifold but, I guess you already knew that.

Radio Edit (Brain 11/19).

kotomile

iTrader: (24)

my two cents in bold:

paul

iTrader: (21)

You're gonna have to do everything right to make 250rwhp on a 1.6 with a GT2560R. Not saying it's not doable but things like exhaust manifold and downpipe and full exhaust are gonna make a big difference. Get an idea of what people are making with that turbo here https://www.miataturbo.net/forum/t28259/ . It's the reason I started the thread.
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disturbedfan121

iTrader: (5)

if i can find a 99 motor i'll sell you my 1.6 begi manifold and DP

motorvated

Is there another turbo you would suggest I use? I dont want to buy a brand new turbo, so im looking for something that either comes stock on cars or one that is easily obtainable used. T25 is probably better for me. Faster spool up.


Ive tried to look for T25 turbos, and everytime I do I show my buddy. He always says "thats a horrible turbo, its not efficient at all..dont get it" Then he shows me a $1300 garret. This is a tubro I was looking at, and he told me its trash.
http://cgi.ebay.com/ebaymotors/BRAND...Q5fAccessories

motorvated

As for the DIY megasquirt....im not sure I could do that. I was going to get one from the guy on here who builds them.

My exhaust is very free flowing. Resonated testpipe, non resonated midpipe and a GoodWin race miffler.

motorvated

Anybody use a Mitsubishi TE04H 13C?

paul

iTrader: (21)

that's the turbo braineack uses, see his results in that first link I posted.

Before you go getting your heart all set on 250hp go for a ride in a miata with 200hp and one with 225. They're no joke. My daily makes 233hp/235ftlbs with over 200 ftlbs of torque from like 3100rpm(and thats with a gt2554r). There's nothing like instant torque in a miata, I wouldn't trade it for slower power build just to put up a bigger top end HP number.

motorvated

I have been in a few. 250 is just my goal...I can always go a little lower. I found someone selling a brand new Flying Miata manifold. Im waiting to get a price on that. I'll probably buy it, and buy a turbo to match.

1stproject

iTrader: (4)

Is all this really possible for a 2.5k budget?

motorvated

yes

Savington

iTrader: (31)

Doubt it. Once you factor in an exhaust, a clutch, a radiator, the ECU, gauges, and all the actual turbo hardware (manifold/DP) not to mention oil/water lines, a wideband, blahblahblahblahfuckingsearchblahblahblahblahblahb asjdfj, you're going to be over $2500. I think I have like $5k into my setup including an oil cooler and a 3" stainless exhaust.

motorvated

Well then, you didnt shop around for deals then. Im in NO rush to get it done. Im only buying things when I see what I want at the price I want. $5K WOW...did you have a shop install everything for you? That will automatically jump the price a lot.

Search around online, there ARE guys who reliably boost their miata for under $3k.

paul

iTrader: (21)

So how long we gonna wait to see your car turbo'd? After Hustlers'? I'll put my money down on Sav's dyno graph being more impressive than yours overall. For the most part you get what you pay for.

motorvated

I could really care less how long YOU wait to see MY car boosted. Im not building it for you, unless there is something I didnt know. Also, please tell me where I said im buying cheap ****. Im buying the best stuff you can buy, but im shopping for the best price on it. like the brand new Flying Miata manifold for $75 im buying. But your right, the DIY section for turbos requires a lot of money.

patsmx5

iTrader: (16)

Ok, here's the thing. Your questions are borderline NEWB questions. You obviously saw the big sticky. But you need to keep reading and keep learning as you've got a lot of leg work to do on the side if you wanna meet your goal of 2.5K. Can it be done? Yeah. It's been done before, and more than once. But it's not easy, and the quality and reliability of the setup will hinge on your ability to select and adapt various used parts together to make a good system. In short, you got a LOT of reading to do. Go to the DIY section and start reading. Also look for other people's build threads so you can see what they bought, and what they too forgot, what they spent $$$ on and what they cheaped out on.

motorvated

Thanks^ I have a few other budget builds im basing mine off of. Im in no rush to get it done. So as I see the good parts for sale, i'll buy them. Mean while, im doing nothing but reading. Thanks for the tips though!

paul

iTrader: (21)

Given an infinite amount of time a monkey can turbo a Miata for free. But you have cited a goal of 250hp with a Garrett GT-R series turbo. Lets go over the things YOU have listed with prices that are certainly fair on what you can expect to find them at on the low end of things.

BRAND NEW FM MANIFOLD: $75
MSPPNP: $725 new, not gonna find it cheaper than $500 used and they don't come up often
IAT sensor for MS: $20
Boost Control Solenoid: $20 used
Fuel injectors, 460's: $50 used without cleaning
Intercooler w/piping: $200
GT2560R that isn't fuxored: $400 is a great deal
Clutch: $300
Downpipe: used $150

that brings you to $1940 if you can get all those things for those prices shipped. $200 less if you find a used MSPNP.

Now you still need all the fittings and lines and heatshielding and WIDEBAND and those other 2 things you listed, a motor and a differential.

How bout the people making 250rwhp with a GT2560R on a 1.6 come forward and tell us how much they did it for.

motorvated

Im not dead set on a 2560..Ive looked into a 28 as well. 250 HP is my goal, and im not afraid to shoot for it. If I fall short, o well. If I make it, i'll be more then happy. Im more concerned with having a reliable boosted car. This isnt my only car..I have a DD and a 1/4 car. This is just a little project, and i'll build it as I see fit. No rush at all, and certainly not to look cool for you. Arguing with you online, is a waste of my time and everyone elses. So, you can offer some good tips, STFU,or continue to argue. I wont be responding if its either of the second two.