Josh's BG GTX - Built to the ****house, lots of cool bits

[joshg123]

Hai all, new on here. Some will know me from fl.com which i frequent.

In its current form its tuned for approx 350whp, upon this point it killed the clutch (read below, upgrading), we were still on pump fuel at 1.5 bar so the intended target is approx 420-430whp. And trying to get it down to 1090kg

Engine
1.8 Mazda familia block bored 040'
Wiseco 040 9:1 Forged pistons
Belfab Racing H beam rods with ARP bolts
O-ringed block for more boost
ARP head studs
Stock mazda DOHC head with;
Tighe Cams custom made billet camshafts with 10+mm lift
272/288 duration
Uprated valvesprings to handle lift and duration
Machined combustion chambers eliminating sharp edge's
Full port and polish, mirror finish exhuast/240grit intake
Modified HLA housings to accept large lift cams
Gates racing belt
Adjustable cam gears
QLD ignition leads made me custom ignition leads
HKS3037 Turbo with Garrett split pulse 0.78AR rear housing
6boost twinscroll/split pulse exhuast manifold
2x TiAl 38mm wastegates with 14psi springs
Modified EVO8 intake manifold
90mm id throttle body
SARD 850cc injectors
Billet fuel rail
PAR engineering chromoly flywheel

Gearbox/Driveline
Ditched mazda driveline (read glass) for toyota gear. Converted to;
E151 Toyota Celica gearbox from GT4
Custom engine mounts
Custom clutch built at Ross's Autoclutch (4 puck button with 2700lb pressure plate)
Toyota Shafts
Modified Toyota shifter and cables
Phil purser Custom Propshaft
modified rear subframe to take toyota rear lsd
stock toyo driveshafts with spacers on diff

Engine bay
PWR front mount intercooler
PWR gearbox oil cooler
PWR engine oil cooler
Relocated engine oil filter with cooler lines
Browns custom made radiator
4 inch intake pipe
Every single hose done in Speedflow braid and fittings

Fuel System
Walbro intank lift pump
1.5l surge tank
Bosch 044 external pump
Alloy 12mm hardline running through car
KRC Billet fuel filter -8AN

Electrics
Autronic SM4 ecu
Custom control panel next to drivers seat
Gauges replace stock gauge cluster
gauges replace radio
Optima 650CCA Battery in spare wheel well
Totally removed all factory engine bay wiring
MAC valve to control boost

Body
7 point Cusco roll cage
Cobra Diolen Drivers seat with head support x2
Wilwood Pedal box with twin brake M/C's
Custom brake lines
D2 8 pot front brakes with modifed fastneners
BG8Z Front brakes modified to fit rear with slotted rotors
Speedylite 7 17"x7" rims
GTR front hubs
PROFLEX suspension with external shockie cannisters
Whiteline rear adjustable sway bar
Whiteline rear strut brace
All bushes replaced with nolathane items

Thats what was in the car, its now back off the road for a new engine, new clutch, new dash, new wiring

New setup
Mazda 1.8BP 020 block
JE forged pistons 9.2:1
Eagle Conrods, arp bolts
Very Very modified head, hemi'd combustion chambers
Solid lifters (raising limiter to 9k)
Reground Tighe Cams for solid lifters
Tilton Twin plate OTII clutch
Another custom PAR flywheel
PAR Engineering 1-4 Dogbox
New wiring throughout car
Fuel cell in rear
Sidepipes
Carbon dashboard

Will keep informed as i go, its pretty farken fast as it is

[joshg123]

[jay]

I wanna see that head, how the hell didja get hemi chambers in that thing without hitting a water jacket?

Want more info on those brakes, too...

[Mazda_Powered]

wow thats awesome! how many years do you have tied up in that car? great job!

[Turpro]

Very impressive list.

[Kris]

amazing!

[mx-3_4evr]

You finally made it here! lol Crazy set up!

[wheresthericego]

That car puts me to shame

[yunvmyegt]

that things sweet...

[Dan [Sac]]

Wow, that looks expensive....well done.

[joshg123]

I wanna see that head, how the hell didja get hemi chambers in that thing without hitting a water jacket?

Want more info on those brakes, too...

I got the head from my Works BG rally car, if you look inside a bp combustion chamber there are two square edges that go into the actual combustion area, if you machine those down and with some carefull grinding you can achieve a full hemisphere in the head, lowers static compression but increases cylinder volumes without changing the stroke (longer stroke - slower revving engine)

I will be completley polishing this surface, then put the 1mm oversize valves in and CC'ing the head to ensure even flows across the cylinders.

I assume they bandsawed a spare head in half before doing this mod.

The brakes are off the shelf BG GTR items, running GTR hubs machined down so they fit on the GTX proflex suspension. You could also fit this brake system to the BA astina v6 hubs (i think you guys call it mx3)

Cheers for the comments

Josh

[joshg123]

Oh and its taken be about 3 years to get from a Black standard BG GTX to this, lots of money and lots of swearing and burnt hands

[Hot_Wheels]

do you have any close up pictures of the engine? what do you do for a living and are they hiring? i can help you be a drug lord

[bomdoutscort]

do you have any close up pictures of the engine? what do you do for a living and are they hiring? i can help you be a drug lord

lol. The dog box is no joke

[joshg123]

do you have any close up pictures of the engine? what do you do for a living and are they hiring? i can help you be a drug lord

Haha i help run a mechanical workshop over here. No drugs.

I have a few, but none on the stand









PS This was the engine bay when i first put the GT4 box in on its previous motor



When it was stock + coilovers + rims



When i first got it, sprayed it myself in the garage







Cheeers

Josh