323BPT Roadster
 

Hey guys I thought I better place my build thread here instead of in the introductions. There has been some changes since reading through more threads on here and no doubt many more to come.

The Car
1989 NA6 Eunos Roadster Import (MX5 for short)

Engine - Currently 251hp @ 16Psi
Mazda 323 GTX 1.8L BPT (East West converted to North South)
MX5 1.8 Sump modified to fit the 323 GTX sump baffle
Belfad H-Beam rods
ACL Bearings
Supertech;
Pistons (83.5mm @ 8.4 compression)
Oversized Valves (1mm)
Double springs
Titanium seats and retainers
Custom Steampipe Manifold
Garret T2876R
Blanked off 5 bolt 2.5" Downpipe
3" exhaust to a 4" cannon
C-Spec 60mm external gate
Sard 800cc Twin Spray
OBX Fuel Rail
Sard Fuel Pressure Reg
Bosch 040 Fuel Pump
4x LS1 Coils
Custom Powertec Leads.
600x300 Intercooler
15 Row Oil Cooler with remote filter
Twin Core Alloy Radiator
Custom rear thermostat outlet
Haltech Platinum Sport 2000

Driveline
Light Weight Billet Flywheel coupled to an Organic H/Duty Exedy
1.8 NA8 Gearbox
1.8 NA8 Torsen Diff

Brakes
4 Piston Wilwood Calipers and Rotors on the Front
1.8 NA8 Rear brakes

Suspension & Wheels
Carbing Engine Brace
Lost Dog Springs (not sure of the rates but they are fairly low)
16x8 Gunmetal Rota Grids currently wrapped in 205x45 Nexen's


Interior
It's got Momo's in it bro ... Deep dish suede wheel
Ultrashield Seat for the Driver
3" OMP 4 Point Harness
Brown Davis Half Cage
Assorted Stereo gear for additional ballast.

Exterior
Chopped rear bar (for the Cannon)
Soon to be chopped front bar (For the 2 Coolers)
Front air dam
Removed the pop up lights and fitted focal projectors
HID's for the above low beams

Future Mods
New Race Seat <- Done
Oil Accumulator <- Not sure on this one ... open to advice
Replace High beams with reflectors < --- done just needs final cowl to be made
Semi Slicks <---- Done
RacePak IQ3 Logger Dash
Fit my Solid Billet Diff & Engine Mounts
Suspension & Nolthane / pineapple kit
Front Sway Bar
Precision 5858 Ceramic with .64
New Cams ~272* and Solid Lifters to suit
Brake Bias Adjuster
Lots of Fibreglass and Carbon bits

https://www.miataturbo.net/attachmen...ine=1354323009

The Old 1.6 NA
https://www.miataturbo.net/attachmen...ine=1354323009

BPT 1.8 (Ver I) Original Turbo and Manifold were Ebay Spec
https://www.miataturbo.net/attachmen...ine=1354323009

The New 1.8 Sub frame and running gear before I let the kids paint it
https://www.miataturbo.net/attachmen...ine=1354323009

https://www.miataturbo.net/attachmen...ine=1354323009

https://www.miataturbo.net/attachmen...ine=1354323009

I need as much assistance as I can get because building this thing out of my shed in Collie has left me with a lack of support in town. Unless its got a V8 and drops skids they can't help...

https://www.miataturbo.net/attachmen...ine=1354323009
https://www.miataturbo.net/attachmen...ine=1354323009
https://www.miataturbo.net/attachmen...ine=1354323009

Well the car is finally back together and managed to survive 2 days of abuse at this weekends ADGP weekend. Luckily I had some great advice from Leon at Beyond Custom who had highlighted the potential danger of my water lines over the turbo. While it was safe for day to day driving going hard on the track would result in those hoses cooking and bursting causing more heartache!

https://www.miataturbo.net/attachmen...ine=1354323009

Given my lack of experience, early braking (trying not to end up like the Hasslehof) and considering I was running a maximum of 15psi on the day I know the car has quite a few more seconds left to drop.

https://www.miataturbo.net/attachmen...ine=1354323009

I thought I would also take the opportunity to get it on the scales and it came back at a heavy 1156kg track ready (with me in it) at half a tank.

Good lookin car ya got there.

Where are you located at?

Thanks man, it has been a long year and I suspect next year will be just as long.

I live in WA, "Wait Awhile" is the nickname but it's actually a country town in Western Australia

Surprised they let you run with the windows up there.

Yeah the rules here state all the way up or down but no half opens.

I have a bpt set up in my car too. Just getting it set up. Great looking build though

Ahh the y8spec turbo.

looks way different though.
I didn't even know they came with a small comp cover like that
thought they were all zomfg-compressor will eat you

O have been debating whether or not to switch to a precision PT5858 or similar but I haven't seen a great deal of success with them and may end up staying with garett but switching to the larger GTX35.

Thoughts or experiences welcome?

A quick update with a recent photo from last weekends motorvation show!
http://www.motorplex.com.au/gallery....=gall&gid=347#
Rocking the straw hat for laughs! I have recently replaced my 5" Jap cannon with a twin dual 2" tips just to pay homage to the GT boyz. It actually sounds alot better with straight pipes and one resonator than with the huge cannon. Luckily they are both on V Band so I can swap as I feel like it. Will upload some photo's when done.


I have also had loads of fun trying to get my hoses to stay on at 25psi (normally 16psi). The latest is a 3" split where one blew out. 2Ply Silicon replacements are on the way.