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BMW 3 Series E30
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BMW 3 Series E30
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This page brings together the uprated engine parts available for the M20B25 six-cylinder of the BMW 325i E30, built from 1983 to 1993.
WISECO forged pistons are offered in 84mm and 85mm bores with a 22mm gudgeon pin, in naturally aspirated form and in the version intended for the longer M20B27 crankshaft. ZRP forged connecting rods are machined from 4340 steel with a 135mm centre-to-centre length. The page also carries SUPERTECH intake and exhaust valve sets of six, SUPERTECH 7mm collets, ARP head studs and con rod bolts, ATHENA and COMETIC head gaskets, ACL and KING RACING tri-metal bearings, VIBRA-TECHNICS mounts and KENT CAMS and CATCAMS vernier cam pulleys.
This page covers the 16V S14B23 four-cylinder of the BMW M3 E30, built from 1986 to 1991.
Forged pistons run from 93.4 to 94.5mm bore, with a 22mm gudgeon pin, in the WÖSSNER, JE PISTONS FSR and WISECO ranges, from 8:1 to 13.1:1 compression. Both ZRP forged crankshafts for the S14 are here, in 2.3 L and 2.5 L, alongside the I-beam ZRP rods. Then come CATCAMS camshafts and cam followers, SUPERTECH valves, guides, stem seals, springs and titanium retainers, ARP head studs, main studs and con rod bolts, ATHENA and COMETIC head gaskets, ACL and KING RACING bearings, FIC injectors and VIBRA-TECHNICS mounts.
This page covers the 16V S14B25 of the BMW M3 E30, the engine of the final evolutions built from 1990 to 1992.
Its forged pistons belong to this page alone. A first kit gathers the WISECO and WÖSSNER ranges from 94 to 95.8mm bore. A second one, from WÖSSNER, suits a 149.70mm centre-to-centre rod: bores from 95.28 to 95.80mm, a 12.8 to 12.9:1 compression ratio, a 22mm gudgeon pin, a 25mm compression height, rings included. The rest is shared across the S14: ZRP rods, CATCAMS camshafts and cam followers, SUPERTECH valves, guides, stem seals and springs, ARP main studs, ACL and KING RACING bearings, FIC injectors and VIBRA-TECHNICS mounts.
CATCAMS performance camshafts for BMW 2.3/2.5 16V S14B23 S14B25:BMW M3 E30 1986 - 1992CATCAMS part numbers: 1300686, 1300687, 1300659, 1300660, 1300651, 1300655, 1300664
High-quality Tail Gaskets Exhaust Valves VAG 9A ABF KR BMW S14B23 S14B25 (Tail Gaskets Exhaust Valves VAG 9A ABF KR) for reliable fitment and performance.
Set of 6 forged 4340-steel connecting rods for BMW 6-cylinder, 135 mm c-to-c.Brands: ZRP Compatibility: 325i E30, 328i E36, 330i E46, M3 E36 US Engine codes: M20B25, M50B25 no VANOS, M52B28, M54B30, S50B30 US, S52B32 US Bolts: ARP 2000 or L19
ZRP forged crankshaft for BMW 2.3 16V S14B23:BMW M3 E30 1986 - 1991
ZRP forged crankshaft for BMW 2.5 16V S14B25:BMW M3 E30 EVO II 1990 - 1992
JE Forged Pistons for BMW M42B18 1.8 L 16V O 84 / 84.5 mm, RV 11.5 ⌀11.6:1, 4032 aluminum, high performance reliability for 318is E30/E36 & 318Ti.
BMW S14B23 2.3L 16V forged pistons: bores 93.4.94.5 mm, RV 8:1 to 13.1:1, pin 22 mm, alloys 2618/4032, rings supplied reliable & racing solution.
Wiseco & Wiseco AP forged piston kit for BMW M20B25: bores 84-85 mm, RV 8.8 or 11.5-11.6:1, pin 22 mm, dome ⌀8.3 to +14.6 cc, rings included.
Wiseco AP Forged Pistons for M20 2.7L Stroker: Bore 84-85mm, RV 8.5 or 10:1, Pin 22mm, CH 31.2mm, Dome ⌀11.1/?1.6cc, Rings Included.
Kit 4 forged Wossner pistons long connecting rods for BMW S14B25: bores 95.28-95.80 mm, RV 12.8-12.9:1, axle 22 mm, CH 25 mm, dome +0.8 cc, segments included.
High-quality Tail gaskets Valves Intake VAG 9A ABF KR BMW S14B23 S14B25 (Tail gaskets Valves Intake VAG 9A ABF KR) for reliable fitment and performance.
KING RACE tri-metal main bearings, OEM size, BMW E30/E36 318i/is 1.8 SOHC/DOHC 8V/16V M40B18, M42B18, M43B18
High-quality Mechanical tappets BMW M3 E30 S14B23 S14B25 (Mechanical tappets BMW M3 E30 S14B23 S14B25) for reliable fitment and performance.
Kit of ARP2000 rod bolts replacing the original bolts on the OEM rods of BMW M3 (E30) and 320is with S14B20, S14B23 and S14B25 engines.Brand: ARP Engines: S14B20, S14B23, S14B25 Dimensions: M11 x 41 mm Grade: ARP2000
Kit of 14 ARP2000 cylinder head studs for BMW 325i, 325iX, 525i and Z1 (M20B25).Brand: ARP Engines: M20B25 Thread: M10 x 1.5 Grade: ARP2000
Kit of 10 ARP 8740 cylinder head studs for BMW M3 E30 and 320is (S14).Brand: ARP Engines: S14B20, S14B23, S14B25 Thread: M12 x 1.75 Grade: 8740
Kit of 10 ARP 8740 crankshaft main studs for BMW M10B20 and S14 engines.Brand: ARP Engines: M10B20, S14B20, S14B23, S14B25 Thread: M10 x 1.5 Grade: 8740 steel
Reinforced Cometic head gasket, in MLS. Sold individually, one gasket per engine.Brand: CometicEngines: M20B20, M20B23Bore: 81 mmThicknesses: 0.69 to 3.56 mmReplaces: 11 12 1 722 728
Reinforced Athena (O-Ring) and Cometic (MLS) head gaskets. Sold individually, one gasket per engine.Brands: Athena, CometicEngines: M20B25, M20B27Bore: 85 to 86.5 mmThicknesses: 0.69 to 3.56 mmReplaces: 11 12 1 722 734
Kit 6 reinforced exhaust valves SUPERTECH for BMW 2.5 12V M20B25 engine:BMW 325i E30 1983 - 1993BMW 525i E34 1988 - 1990References: BMEVN-1084, BMEVI-1085.
Kit of 8 reinforced SUPERTECH exhaust valves for BMW 2.3/2.5 16V S14B23 S14B25:BMW M3 E30 1986 - 1992Part numbers: BMEVN-1010, BMEVI-1006L, BMEVI-1010, BMEVN-1009, BMEVN-1009L, BMEVN-1010L
Reinforced Athena and Cometic head gasket, in Cut Ring and MLS for BMW M42B18 and M44B19. Sold individually.Brands: Athena, CometicEngines: M42B18, M44B19Bores: 85 to 87.5 mmThicknesses: 0.69 to 3.56 mmReplaces: 11 12 1 721 546
Reinforced Athena and Cometic head gasket, in Cut Ring and MLS for BMW S14B20 and S14B23. Sold individually.Brands: Athena, CometicEngines: S14B20, S14B23Bores: 90 to 96.5 mmThicknesses: 0.69 to 3.56 mmReplaces: 11 12 1 316 714
Kit 6 reinforced intake valves SUPERTECH for BMW 2.5 12V M20B25 engine:BMW 325i E30 1983 - 1993BMW 525i E34 1988 - 1990References: BMIVN-1084, BMIVN-1085.Intake valves only; the reinforced exhaust valves are listed separately.
Kit of 8 reinforced SUPERTECH intake valves for BMW 2.3/2.5 16V S14B23 S14B25:BMW M3 E30 1986 - 1992Part numbers: BMIVN-1010L, BMIVN-1006L, BMIVN-1008-8, BMIVN-1009-8, BMIVN-1009L-8, BMIVN-1010-8
High-quality Reinforced Valve Springs BMW M3 E30 S14B23 S14B25 (Reinforced Valve Springs BMW M3 E30 S14B23 S14B25) for reliable fitment and performance.
Kit of 24 half-moon valve collets for SUPERTECH / FERREA valves, 7mm diameter:Number of grooves of your choiceReferences: KPR-VW7-T-24, KPR-VW7-S-24
Bearings Crankshaft single trimetal lug ACL Race BMW M20B20 M20B23 M20B25 M20B27:BMW 320i E21BMW 323i E21BMW 325 E30
Tri-metal main bearings ACL RACE / KING RACING for BMW M20B25, M50B20/B25, M52B25/B28, M54B25/B30, S50B30/B32, S54B32:BMW 325i E30 1983-1993 BMW 320i 323i 325i M3 E36 1991-2000 BMW 323i 325i 330i M3 E46 1998-2006 BMW 520i 525i E34 1988-1996 BMW 523i 525i 530i E39 1996-2004 BMW 525i 530i E60 2001-2010 BMW Z3 Z4 2.0 3.0 Z3M Z4M E36 E85 1999-2008
Set of 12 trimetal connecting rod half-bearings for BMW inline-six M20, M50, M52 and M54.Brands and treatments: ACL Race and King Racing (optional pMaxKote coating) Compatibility: E30, E34, E36, E39, E46, E60, Z3, Z4 Engine codes: M20, M50, M52, M54, S50B30US, S52B32US Available sizes: standard to +0.50 mm, increased-clearance versions (HX / STDX)
Set of 8 trimetal connecting rod half-bearings for BMW inline-four M40, M42, M43 and M44.Brands and treatments: ACL Race and King Racing Compatibility: E30, E34, E36, E46, Z3 Engine codes: M40B16, M40B18, M42B18, M43B16, M43B18, M43B19, M44B19 Available sizes: standard to +0.50 mm, increased-clearance version (HX)
Set of 8 trimetal connecting rod half-bearings for the BMW S14 inline-four.Brands and treatments: ACL Race and King Racing Compatibility: M3 and 320is (E30) Engine codes: S14B20, S14B23, S14B25 Available sizes: standard to +0.25 mm, increased-clearance version (HX)
VIBRA-TECHNICS uprated engine mount and axle mount for BMW E30:BMW E30 Saloon, Coupé, Convertible, Touring 1983 - 1993, M20 engineBMW M3 E30 Coupé, Convertible 1986 - 1992, S14 engine
Kit of 32 valve collets for SUPERTECH / FERREA valves, 7mm diameter: Number of grooves to choose References: KPR-VW7-T-32, KPR-VW7-S-32
High-quality BMW M3 E30 S14B23 S14B25 Valve Guides (BMW M3 E30 S14B23 S14B25 Valve Guides) for reliable fitment and performance.
KENT CAMS vernier cam pulley for BMW M20B25 2.5 12V engine:BMW 325 i E30 1983 - 1993 BMW 525 i E34 1988 - 1990
Vernier cam pulleys CATCAMS / KENT CAMS for the BMW 2.5 12V M20B25 engine:BMW 325 i E30 1983 - 1993 BMW 525 i E34 1988 - 1990
Uprated engine parts for the BMW 3 Series E30, with three dedicated pages: 325i M20B25, M3 S14B23 and M3 S14B25.
The category covers forged pistons for the M20B25, M42B18, S14B23 and S14B25, forged six-cylinder connecting rods with a 135 mm centre to centre length, forged S14 crankshafts, tri-metal big end and main bearings, reinforced COMETIC head gaskets, intake and exhaust valves with springs, guides, cam followers, collets and stem seals, CATCAMS camshafts, KENT CAMS vernier cam pulleys, ARP studs and con rod bolts, plus an uprated VIBRA-TECHNICS engine mount.
