323BPT Roadster - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to Miataturbo.net   Members

Build Threads Building a motor? Post the progress here.

LinkBack Thread Tools Search this Thread
Old 12-09-2012, 09:22 AM   #1
Thread Starter
Join Date: Apr 2012
Posts: 17
Total Cats: 0
Default 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
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

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

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

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.

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

The Old 1.6 NA

BPT 1.8 (Ver I) Original Turbo and Manifold were Ebay Spec

The New 1.8 Sub frame and running gear before I let the kids paint it

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...

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!

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.

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.
404 - Gaz is offline   Reply With Quote
Old 12-09-2012, 10:30 AM   #2
Senior Member
Join Date: Aug 2010
Location: Arl. Texas
Posts: 911
Total Cats: 15

Good lookin car ya got there.

Where are you located at?
Miater is offline   Reply With Quote
Old 12-10-2012, 04:22 AM   #3
Thread Starter
Join Date: Apr 2012
Posts: 17
Total Cats: 0

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
404 - Gaz is offline   Reply With Quote
Old 12-13-2012, 11:29 AM   #4
Junior Member
iTrader: (1)
Join Date: Nov 2010
Location: SoCal 626
Posts: 94
Total Cats: 0

Surprised they let you run with the windows up there.
qax is offline   Reply With Quote
Old 12-14-2012, 01:03 AM   #5
Thread Starter
Join Date: Apr 2012
Posts: 17
Total Cats: 0

Originally Posted by qax View Post
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.
404 - Gaz is offline   Reply With Quote
Old 12-22-2012, 11:27 PM   #6
Junior Member
Join Date: Sep 2012
Location: New Zealand Christchurch
Posts: 199
Total Cats: -5

I have a bpt set up in my car too. Just getting it set up. Great looking build though
jimmyneutron is offline   Reply With Quote
Old 12-23-2012, 12:49 AM   #7
Elite Member
iTrader: (2)
Faeflora's Avatar
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,763
Total Cats: 116

Ahh the y8spec turbo.
Faeflora is offline   Reply With Quote
Old 12-23-2012, 12:55 AM   #8
iTrader: (76)
18psi's Avatar
Join Date: Apr 2008
Posts: 32,867
Total Cats: 1,940

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
18psi is offline   Reply With Quote
Old 12-23-2012, 05:33 AM   #9
Thread Starter
Join Date: Apr 2012
Posts: 17
Total Cats: 0

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?
404 - Gaz is offline   Reply With Quote
Old 01-23-2013, 10:14 AM   #10
Thread Starter
Join Date: Apr 2012
Posts: 17
Total Cats: 0

A quick update with a recent photo from last weekends motorvation show!
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.
404 - Gaz is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Speed Hunters Roadster article. pretty dope.. TURNS101 Media 21 02-04-2009 09:52 PM
What to do... SgtSpike General Miata Chat 8 11-23-2008 02:31 PM
FS: Eunos and Roadster emblems MikeD Miata parts for sale/trade 2 01-24-2007 02:01 AM

1.8l turbo, 323, 404, miata, mx5

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 08:00 PM.