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BMW 320iS

 

BASIS

1990 BMW E30 320iS left hand drive, made for the Italian and Portuguese markets only.  Limited production to provide the equivalent to the UK/German 325i sport but with a de-stroked `s14' m3 engine of 1990cc to avoid heavy taxation.

 

BODY 

Strengthened and gusseted inner wings,  OMP roll cage,  front strut brace,  strengthened anti-roll bar mounts,  fibreglass bonnet,  boot inner skin removed,  aluminium fuel tank,  all sound proofing and underbody sealant removed,  everything not required  removed,  unnecessary wiring removed,  z3m rear tower reinforcements,  perspex side and rear windows,  air cond. removed,  m-tec kit removed,  spare wheel well removed,  fire walled,  hand held and plumbed in extinguishers,  competition seats and 6 point harnesses,  intercom,  front chassis brace and sumpguard,  early warning systems, oil pressure gauge, voltmeter, RAC log book,  henna red,  competition weight: 1000 Kg.

ENGINE

2007 Spec.

Standard fitment BMW Motorsport Type `S14', 16 valve inline 4,  Displacement 1990cc,  Induction via ported 46mm throttle bodies,  292 inlet & 308 exhaust cams,  JE pistons 11.75 to 1 compression,  underdrive pulleys,  flywheel machined down to 11lb,  lightened and balanced crankshaft assembly,  16 row 235mm oil cooler,  inlet tracts ported,  standard intake & oversize exhaust valves (37mm/3?mm),  standard exhaust manifold,  baffled sump & enlarged sump,  scorpion stainless system,  Bruvsmotorworks heavy duty engine mounts,  Bruvsmotorworks horsepower 223 Bhp @ 7400 at the flywheel.  Full re-map by Chip Wizards.

2006/7 Spec.

High capacity sump fitted on otherwise standard engine following buzzed engine.

2006 Spec.

Standard fitment BMW Motorsport Type `S14', 16 valve inline 4,  Displacement 1990cc,  Induction via standard 46mm throttle bodies,  Standard cams,  standard Mahle pistons,  air cond. groove machined off front pulley,  flywheel machined down to 11lb,  lightened and balanced crankshaft assembly,   10.5:1 compression.  16 row 235mm oil cooler,  inlet ports cleaned up,  standard intake/exhaust valves (37mm/32mm),  standard exhaust manifold,  baffled sump,  scorpion stainless system,  Bruvsmotorworks heavy duty engine mounts,  Standard horsepower 192 Bhp @ 6750 at the flywheel,  Bruvsmotorworks horsepower 207 Bhp @ 7000 at the flywheel.

SUSPENSION and BRAKES

2007 Spec.

1.25 Degrees negative camber for closed roads,  Softer front pads for improved cold response.

2006 Spec.

Abs removed,  servo removed,  bias pedal box with external separate front and rear hydraulics,  standard 4 stud hubs discarded,  M3 hubs and brakes fitted all round, 635CSi  front calipers fitted (same as M3 but larger pistons),  Mintex 1144 pads all round,  additional hydraulic handbrake,  all lines inside, braided external hoses,  AP fluid,  AVO Coilover front strut casings with 40mm AVO adjustable inverted inserts,  AVO adjustable rear dampers,  2.25" 275 lb. front springs, Eibach Tarmac 180N Progressive rear springs,  m3 anti-roll bars,  Z3m spec. strengthened rear arms,  M3 eccentric front wishbone bushes,  z3m rear turret reinforcements,  bmw camber correction roller top mounts,  polybushed rear beam,  strengthened front x-member,  m3 power steering rack,  7x15 bmw bbs wheels et30 to et20,  competition tyres.

FUEL SYSTEM

Idle control valve and air flow meter removed,  Carbon plenum, K&N element,  Maxx-Automotive Alpha-n programmable ECU,  hard lined fuel pipes in-car, braided in engine and boot,  aluminium Fuel Tank Capacity 12 gallons with sump,  gravity fed Bosch motorsport pump,  Mercedes 450slc fuel filter,  super unleaded fuel.

TRANSMISSION

2007 Spec.

Getrag 265 sport 5-speed, race ratio gearbox with dogleg first gear,  gear ratios: 1st: 2.33:1; 2nd: 1.68:1; 3rd: 1.33:1; 4th: 1.15:1; 5th: 1:1.  additional Bruvsmotorworks 3rd gearbox mount,  Standard clutch cover with 228 mm  heavy duty centre plate.  Different differentials dependent on venue,  standard diff casings used with 4.45:1 and 5.125:1 ratios,  standard plate limited slip differential modified by specialist with more preload and extra friction plates fitted,  z3m rear casing bush.

 

2006 Spec.

Standard equipment 320iS (and M3) Getrag 265 sport 5-speed, close ratio gearbox with dogleg first gear,  gear ratios: 1st: 3.72:1; 2nd: 2.40:1; 3rd: 1.77:1; 4th: 1.26:1; 5th: 1:1.  additional Bruvsmotorworks 3rd gearbox mount,  Standard clutch cover with 228 mm  heavy duty centre plate.  Different differentials dependent on venue,  standard diff casings used with standard 3.46:1 CW&P replaced with 3.91:1 to 4.45:1 ratios,  standard plate limited slip differential modified by specialist with more preload and extra friction plates fitted,  z3m rear casing bush.

GALLERY

For more pictures and details.

 

Disclaimer: These are our modifications for racing purposes only - not for road use.

 

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