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BG 323 GTX

BG 323 GTX 1.8 Dohc turbo 4WD

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BG GTX suffers a bit from middle child syndrome..his BF(B6T) brother has achieved cult status...while 323 GT-R out stounches them both.But as that middle child it has its place as a stepping stone in development and tuning -a continuation in the evolution of the DOHC/T 323....

As it stand this car is still one of the best value-bang for bucks turbo cars available,currently(2001) you can pick up a very good BG GTX for between NZ\\$6k-$9K..depends on what mods they have too...its a good little package considering you get great handling(4WD) good responsive performance and the economy isnt too bad either.The engine also takes very well to tuning and modifying with good gains from not much exspense.The archilles heel of the BG 323 GTX is the gearbox bearings which lets the hole car down.Prolonged abuse will blow this tranny as many owners know.However there are places out there that strenghten these boxes-bigger bearings and bracing here and there,having said that, there is no problems with driving this car fast Grand Turismo styles and changing up or down its just not a "stunt" car.

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Drivetrain/suspension.
The compact, lightweight, planetary-geared center differential has an uneven front/rear torque split ratio set at 43:57 following extensive testing.The center differential is fitted with a viscous LSD (limited slip differential)the coupling has 29 thin overlapping steel plates inside its housing. The hub and the inside of the housing are splinted. Half the plates rotate with the hub and the rest are fixed to the housing. Each plate has holes and grooves and the plates sit in a pool of viscous silicon oil. The center differential's sun gear is connected to the viscous coupling's housing. The pinion gear is attached to the coupling's hub. When a wheel begins to slip, a larger rotation difference occurs between the 29 plates which spin against each other, heating up the silicone oil which in turn expands. This forces the plates together, locking the coupling which eliminates the rotational difference. The advantage of fitting a viscous LSD to the center differential is increased traction and stability. If one wheel floats, for example, on rough road surfaces or during hard cornering, or if a tire loses grip, the viscous LSD relocates torque to the other wheel without reducing drive power to that wheel. On gravel or snow-covered roads, more torque to the front wheels let the car adopt FWD characteristics, enhancing vehicle stability. The rear differential is also fitted with a viscous LSD to further enhance stability should a rear wheel lose its grip.

Type BPD, DOHC, 16-valve, EGI/Turbocharged ,twin-overhead-camshaft, 16-valve, 1.839 cc, inline 4-cylinder engine.
The type BPD 1.8 liter engine and VJ-20 turbo(ihi RHB5) that powers the GTX has a 52.5-mm diameter turbine and a 52.5-mm compressor with floating-metal bearings . A/R ratio of 15."A" is the smallest scroll area and "R" the distance between the turbine-shaft center and the center of area "A", the two factors used in calculating turbocharger's performance characteristics. The intercooler ,125mm x 247mm,4.500 kcal/h, is mounted in the low left side of the engine bay with ducting to direct the air stream through it,may people have upgrade this to a front mount set up using aftermarket i/c's.

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The highly praised basic suspension layout of the GTX has been passed on unchanged to the GT-R, along with the same wheel-base (2450 mm) and front and rear track (1430 mm and 1435 mm respectively).
The front strut-type suspension employs lower A-arms with the frontal attachment point besides the wheel center for greater lateral rigidity. Wheel alignment: front toe-in (2 mm), camber (-0°40'), and caster (2°40'). The rear strut-type suspension has twin lateral links and single trailing link arranged in a trapezoid. Wheel alignment: rear toe-in (2 mm), camber (-0°20').
22mm front stabilizer bar
20mm diameter solid rear stabilizer bar
gearing ratio of the rack-andpinion steering =15.0 , with a lock-to-lock @ 2.7 .
14"x5.5JJ wheels, 195/60R14 four bolt pattern.
brake disc effective radius = 105mm
22mm ventilated front discs
9mm solid rear discs

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The type BPD DOHC EGI engine has an 83.0 mm bore and an 85.0 mm stroke for a total capacity of 1,839 cc. The compression is 8.2:1 and the engine requires premium unleaded fuel (minimum RON 95). The cylinder head is precision diecast aluminum, carrying twin overhead camshafts. The single-stage, cogged-belt-driven camshafts operate 4 valves per cylinder via inverted bucket tappets that incorporate hydraulic lash adjusters, which maintain precise clearance without periodic adjustment. The camshafts are hollow-cast to reduce weight, each camshaft being 500 grams lighter than a comparable solid camshaft.