My attempt at "getting good" GT3076R
#1
Senior Member
Thread Starter
iTrader: (1)
Join Date: Apr 2011
Location: Jonesboro Arkansas
Posts: 553
Total Cats: 25
My attempt at "getting good" GT3076R
So I've been lurking this forum a lot here lately and thought it might be cool to post my build and see what you guys think. Maybe use this thread to document my labor as time goes on.
Here is a previous build:
https://www.miataturbo.net/build-thr...pics%2A-80727/
I've been in miatas 13 ish years now, I'm to a point where I am done with ebay crap and am trying to do this right. I sold my msm in hopes of starting in a better direction. I was left with two choices, grab a clean low mileage stock miata and mod it up or grab one that was going in the direction I wanted.
So I bought this 99 miata, the previous owner pored his retirement money into this trying to add power, and really nothing else. This car made power but had no supporting mods. So I bought it super cheap and have been trying to make it my own since. I've got a book of receipts for every single bolt added to the car, its a lot of documentation.... If you want to see it all, I have an excel I can post on here. Any who, I got the car cheap and have been trying to make it better. Since I got the car in October 2016 I've added soooooo much to the car.
I'm posting to show my work and get input on what to improve upon.
The basics:
Motor:
Wiseco Piston Set 1.8BP 83.5mm
Enghine Bore and hone block vating
Supertech Valvespring set with retainers
ARP Head StudsHead GasketBearing set (enghine, thrust, and rod)
Injector O-Ring, rear main, oil cooler, injector
Mazdaspeed motor mounts
Fuel:
Flyin miata DRT Fuel rail
marshall fuel pressure gauge
Precision Peak and hold injectors 780cc
aeromotive fuel pressure regulator 13109
turbosmart fuel rail adaptor
walbro 255
Turbo:
BEGI cast manifold 99 miata with ex wastgate with option
Precision GT3076R
Turbosmart boost controller
tial 50mm BOV
tial 38mm wastegate
Wheels:
TR Motorsport 15x9
Toyo R1R 225/45/15
meteki lugs
Suspension
:FM suspension kit stage 2 v-maxx
FM sway bars
V-maxx 504lb 336lb
Sound:
blaupunkt GTx 803 DE 260w 8"
pioneer head unit
dynomat in doors
kenwood 400w amp
Trans:
ACT Extreme
Torsen 4.10 diff from 04 msm
Cooling:
Megan Racing radiator
Electronics
:nemisis ECU 2.6
AEM Windeband
AEM Boost gauge
Exhaust:Begi downpipe
External wastegate dump
2.5" turbo back
Safety:
Hard Dog Double diag
Hard Dog Harness bar
Hard Dog in door bar
Sparco Sprint
Sparco 5 point
Braking:
Wilwood 4 Piston all around with lines and ebrake
wilwood end caps for bleeders
redline DOT4
wilwood bleeder valve
Other stuff:
Hard top
garagestar stuff
V1 diffuser
I'm sure I'm missing stuff but that's the highlights.
I'm looking to make this a great street car that can do track days every now and then, so my next project will be nailing the cooling by making shourds and throwing in a cross flow, then getting Abe to make me 3" exhaust so I can enjoy a more civilized ride, the wastegate dump is loud.
The car currently makes about 250-300rwhp I say about because it made 258rwhp with a completely bad WB02, I fixed that and haven't redynoed. The car is in dire need for a retune. I want to fix all the problems on the car before I retune it. When I got the car, all the vacum lines and such had to be either reran or replaced do to age or bad placement.
Here is a previous build:
https://www.miataturbo.net/build-thr...pics%2A-80727/
I've been in miatas 13 ish years now, I'm to a point where I am done with ebay crap and am trying to do this right. I sold my msm in hopes of starting in a better direction. I was left with two choices, grab a clean low mileage stock miata and mod it up or grab one that was going in the direction I wanted.
So I bought this 99 miata, the previous owner pored his retirement money into this trying to add power, and really nothing else. This car made power but had no supporting mods. So I bought it super cheap and have been trying to make it my own since. I've got a book of receipts for every single bolt added to the car, its a lot of documentation.... If you want to see it all, I have an excel I can post on here. Any who, I got the car cheap and have been trying to make it better. Since I got the car in October 2016 I've added soooooo much to the car.
I'm posting to show my work and get input on what to improve upon.
The basics:
Motor:
Wiseco Piston Set 1.8BP 83.5mm
Enghine Bore and hone block vating
Supertech Valvespring set with retainers
ARP Head StudsHead GasketBearing set (enghine, thrust, and rod)
Injector O-Ring, rear main, oil cooler, injector
Mazdaspeed motor mounts
Fuel:
Flyin miata DRT Fuel rail
marshall fuel pressure gauge
Precision Peak and hold injectors 780cc
aeromotive fuel pressure regulator 13109
turbosmart fuel rail adaptor
walbro 255
Turbo:
BEGI cast manifold 99 miata with ex wastgate with option
Precision GT3076R
Turbosmart boost controller
tial 50mm BOV
tial 38mm wastegate
Wheels:
TR Motorsport 15x9
Toyo R1R 225/45/15
meteki lugs
Suspension
:FM suspension kit stage 2 v-maxx
FM sway bars
V-maxx 504lb 336lb
Sound:
blaupunkt GTx 803 DE 260w 8"
pioneer head unit
dynomat in doors
kenwood 400w amp
Trans:
ACT Extreme
Torsen 4.10 diff from 04 msm
Cooling:
Megan Racing radiator
Electronics
:nemisis ECU 2.6
AEM Windeband
AEM Boost gauge
Exhaust:Begi downpipe
External wastegate dump
2.5" turbo back
Safety:
Hard Dog Double diag
Hard Dog Harness bar
Hard Dog in door bar
Sparco Sprint
Sparco 5 point
Braking:
Wilwood 4 Piston all around with lines and ebrake
wilwood end caps for bleeders
redline DOT4
wilwood bleeder valve
Other stuff:
Hard top
garagestar stuff
V1 diffuser
I'm sure I'm missing stuff but that's the highlights.
I'm looking to make this a great street car that can do track days every now and then, so my next project will be nailing the cooling by making shourds and throwing in a cross flow, then getting Abe to make me 3" exhaust so I can enjoy a more civilized ride, the wastegate dump is loud.
The car currently makes about 250-300rwhp I say about because it made 258rwhp with a completely bad WB02, I fixed that and haven't redynoed. The car is in dire need for a retune. I want to fix all the problems on the car before I retune it. When I got the car, all the vacum lines and such had to be either reran or replaced do to age or bad placement.
#6
Senior Member
Thread Starter
iTrader: (1)
Join Date: Apr 2011
Location: Jonesboro Arkansas
Posts: 553
Total Cats: 25
This was my base dyno, before I fixed well anything. There is some compression surge, Its a BOV thing, stupid spring issue on the tial 50mm. I could go on. I needed a baseline and to see what the car was doing.
247hp 233tq uncorrected such a heart breaker. I later found SOOOOO many boost leaks and vacuum leaks that had to be fixed along with a bad WB02. I think it's closer to 300hp. I sent the current tune to FM, they told me the current tune is not the best so I'm making preparations to get it re-tuned at the end of the year. This car can do so much more than what it is. I'm not sure what I want out of it though, I need some thoughts on that. 300 seems pretty good for a street car esp with this turbo. I know I could go much higher.
Photo bucket is being lame, I'll get the dyno graph up here later.
Here is my old miata, it made 192hp I forgot the tq but not bad considering it's a very lightly modded msm.
247hp 233tq uncorrected such a heart breaker. I later found SOOOOO many boost leaks and vacuum leaks that had to be fixed along with a bad WB02. I think it's closer to 300hp. I sent the current tune to FM, they told me the current tune is not the best so I'm making preparations to get it re-tuned at the end of the year. This car can do so much more than what it is. I'm not sure what I want out of it though, I need some thoughts on that. 300 seems pretty good for a street car esp with this turbo. I know I could go much higher.
Photo bucket is being lame, I'll get the dyno graph up here later.
Here is my old miata, it made 192hp I forgot the tq but not bad considering it's a very lightly modded msm.
#8
Senior Member
Thread Starter
iTrader: (1)
Join Date: Apr 2011
Location: Jonesboro Arkansas
Posts: 553
Total Cats: 25
Miatas at the Gap
It took forever to polish everything. It takes a lot of time. Esp if you've never done it before.
#10
Senior Member
Thread Starter
iTrader: (1)
Join Date: Apr 2011
Location: Jonesboro Arkansas
Posts: 553
Total Cats: 25
My next issue to fix is a fuel leak, my car smells like gas but I can't pinpoint the problem. I think it is about my pressure regulator. I still get 28mpg so it can't be a massive leak. I got this stuff to add to my fuel and use a black light to track down leaks.
I'm also going to throw this on there when I get the leak sorted out. The car didn't come with and under tray cover so why buy a new one for $80 shipped when I can get this for $125 Here's the link to them:
NA Miata Aluminum Aero Undertray I can add the other pieces to it later.
I'm also going to throw this on there when I get the leak sorted out. The car didn't come with and under tray cover so why buy a new one for $80 shipped when I can get this for $125 Here's the link to them:
NA Miata Aluminum Aero Undertray I can add the other pieces to it later.
#15
Senior Member
Thread Starter
iTrader: (1)
Join Date: Apr 2011
Location: Jonesboro Arkansas
Posts: 553
Total Cats: 25
https://www.miataturbo.net/engine-pe...-thread-78293/
Any thoughts on this would be welcome
I think I'm going to have to change it. That was a before I got it deal. The fittings are also massive, I think some smaller ones are in order as well.
Last edited by miataman04; 03-19-2017 at 08:53 PM.
#18
Senior Member
Thread Starter
iTrader: (1)
Join Date: Apr 2011
Location: Jonesboro Arkansas
Posts: 553
Total Cats: 25
So I've been reading lots of forums including this one and there seems to be several schools of though on oil catch cans. Many say that my current setup is bad and could be why my car has an odd gasoline-ish smell after running it hard. While some say my setup is fine. I really need some help with this.I'm thinking about running a dual setup like this one. It will require me to modify my valve cover or grab an unmolested one to work with.
#20
Elite Member
iTrader: (1)
Join Date: Apr 2014
Location: SF Bay Area, CA
Posts: 3,102
Total Cats: 559
Not sure what you are wasting your time reading other forums for.
Can't find yer fuel leak huh?
The diagram will work fine with your valve cover.
The only issue with the diagram is the hot side needs to be downstream from the air filter. I did all this and now I only get the PCV smell when my BOV opens. I am trying to recirculate it further downstream from the air filter in my garage now, before Wednesday night drags.
I won't say it again, the fuel smell is coming from your vented catch can. It should be sealed. Look at how the OEM's do it, you don't smell that in a factory turbo car.
Also seems like it will create a boost leak, unless you have a cool modified PCV valve between the can and the IM.
But then WTF do I know
Can't find yer fuel leak huh?
The diagram will work fine with your valve cover.
The only issue with the diagram is the hot side needs to be downstream from the air filter. I did all this and now I only get the PCV smell when my BOV opens. I am trying to recirculate it further downstream from the air filter in my garage now, before Wednesday night drags.
I won't say it again, the fuel smell is coming from your vented catch can. It should be sealed. Look at how the OEM's do it, you don't smell that in a factory turbo car.
Also seems like it will create a boost leak, unless you have a cool modified PCV valve between the can and the IM.
But then WTF do I know