magic_281

Hi!

I just realized that I didn't made any presentation.
So I'm from France, I'm 29 and I have some knowledges about mx5

Here is my last miata 1.6 115 HP 93', I previously owned about 6 miatas from NA to NC via NB... ok NB was a mistake!

Some pics are better than talking:

my previous car and the actual one:


when I've purchased it in Germany last summer:


The car after black painting:


Except 16' wheels and dampers, the car was stock when I bought it.

I've made some extras:
- Jackson racing header
- JR intake
- Racing beat sigle exhaust muffler
- by pass cat
- RX7 AFM
- Koni sport suspensions
- ILM bushing kit
- torsen
- complete subframes from NA 1.8 incl. brakes (front and rear)
- Cruise control

Projects:
- Hard dog hard core hard top (ordered)
- DIYPNP MS2
- turbo or supercharger

skidude

iTrader: (3)

Nice looking car! Why was the NB a mistake? Got any plans for a turbo?

palmtree

iTrader: (4)

Welcome!

Looks like a clean car!

Braineack

iTrader: (62)

Welcome to the site magic_281, thanks for joining up!

gospeed81

iTrader: (51)

Welcome man! Not sure that we have another Frenchman on the board.

What are your power goals with forced induction? What is your budget, and what are your mechanical skills?

magic_281

thank you for welcoming me!
Well I think the NA is the only miata that's why I've left the NB.

My experience is based on learning on forums! I need more power to have fun, to drift a little and not being ridiculous compared to the porsche and BMW in my suburb!!

I need more but my aim is not to have a V8 engine or 300HP, 160 to 180 HP would be great!
Why not even more? cause beyond 180 HP there's a lot of oem parts to change such as clutch, bigger exhaust, bigger brakes and so on no?
I need something reliable because it's a daily drive car. So here is the goal.
The way to get this ... that's the reason of my inscription here!
I love learning and I do all by myself on my car, so the next step is to have a customisable mapping of the car thanks to a MS, to proof it and then a turbo.
About $$, I've not a defined budget but more than $3.000 wouldn't be a great deal..

gospeed81

iTrader: (51)

Most of those parts would need to be replaced as you edge 180whp anyhow, and are relatively cheap and easy compared to engine management and turbo kit cost/installation.

The funny thing is, once you've made 180hp correctly, everything is set to turn it up to 250hp. The rods and transmission both find ways to break at that point.

You want a stronger clutch...period. I recommend an organic disk ACT.

Definitely go MegaSquirt for engine management and invest in some larger injectors that give you headroom.

2.5" mandrel bent exhaust minimum.



I went through a couple of stages...180hp>200hp>~230hp. It was really fun that way. The car is VERY entertaining at 180hp with good suspension and light wheels...but you WILL want more. Another 20-40 horsepower is as simple as turning up the boost and really makes the car a rocket.

Sizing your turbo appropriately for this will make for a car that is great around town and still pulls all the way to redline. Being that your goals are a little lower than most you can get a nice small turbo that spools instantly, and if you find it too small for your top end later I found head porting and water injection (and 3" exhaust) drastically improved how much power was carried at the top end of the rev range.

Have fun, looking forward to a build thread.

magic_281

thanks for the feedback.

I've already heard about 2.5'' exhaust system needed by a turbo. Is a RB muffler 2.5"??

About turbo itself I'm a bit lost in the various marks so I will read through this forum to make my own opinion! But I suppose that depending on the power you want, the liability and ... the price, the best mark will be different..

gospeed81

iTrader: (51)

Best way to check out turbos and learn a little about sizing:

http://www.squirrelpf.com/turbocalc/

Here's ideal for a 1.6...your demand line should always straddle the center of the efficiency island:

http://www.squirrelpf.com/turbocalc/...&product_id=77


That's a 50trim T3 making 200whp @ 13psi. I program in a .51 BSFC using their calc as this most accurately correlates with dyno results I've seen.


Not sure on the RB muffler, but I'd stay away from anything designed for the normally aspirated crowd unless you know for sure it's a "straight thru" design. Lots of better options out there for turbo exhaust, or you can just get ahold of a Magnaflow and some mandrel bends and get a local exhaust shop to fabricate it (or learn to weld and have chest hair magically appear).

sixshooter

iTrader: (12)

You will have plenty of time to study about turbos after you get the Megasquirt installed and running correctly. A 2560 turbo would probably make you very happy. 2.5 inch exhaust is minimum. A 3 inch exhaust is usually better. Many people just buy a good muffler like a Magnaflow then have a local exhaust shop build and weld the rest of the pipe.

A muffler like this one that is open straight through is best. If you can put a golf ball through it it is good.

magic_281

Wow! interesting links!
I didn't knew Magnaflow could be so cheap!
But first of all I'll order a DIYPNP with MS2 core, GM by pass AFM, innovate MTX-L wideband and a sequential injection kit (but I don't know where to get the right signal for sequential injection)
I will then have a look at water cooling system (oem radiator won't be ok I think), oil cooling, intercooler.