Supertech High Performance Valves: Subaru

SUBARU EJ20 / EJ25 WRX / STi Turbo DOHC
	INTAKE VALVE						Part Number	EXHAUST VALVE					Part Number
	Head Diam		Stem. Diam		Length		Black Nitrided	Head Diam		Stem. Diam		Length	Black Nitrided / Inconel
Impreza WRX / STi	36mm (std)		5.96mm		104.35mm (std)		SIVN-1010	32.00mm (std)		5.96mm		104.7mm (std)	SEVN-1010 / SEVI-1010*
	36.50mm (+0.5)				104.35 (std) or 103.85mm		SIVN-1012 or SIVN-1012/2	32.50mm (+0.5)				104.7 (std) or 104.50mm	SEVN-1012 / SEVI-1012*
	37.00mm (+1.0)				104.35 (std) or 103.85mm		SIVN-1014 or SIVN-1014/2	33.00mm (+1.0)				104.7 (std) or 104.20mm	SEVN-1014/2 / SEVI-1014*
ENGINE COMPONENTS
VALVE SPRINGS	Outer Spring			Inner Spring		Pressure (lbs@mm)		Max Net lift	Coil Bind		Rate	Titanium Retainer
Part Number	O.D. (mm)	I.D. (mm)		O.D. (mm)	I.D. (mm)	Seat	Open (lift)	mm	mm		lbs./mm	Part Number
SPR-TS1015/SU3	27.50	20.00		20.00	15.20	64 @ 36.0	199 @ 11.5	15.30	20.70		12.10	RET-TS60/WRX1 + SEAT-TS/SUB3 (no OEM)
SPR-TS1015/SU1	27.50	20.00		20.00	15.20	70 @ 35.5	209 @ 11.5	13.80	20.70		12.10	RET-TS60/WRX1 + SEAT-TS/SUB (no OEM)
SPR-TS1015/SU4	27.50	20.00		20.00	15.20	82 @ 34.25	220 @ 11.5	12.50	20.70		12.10	RET-TS60/WRX1 + SEAT-TS/SUB4 (no OEM)
VALVE GUIDES	INTAKE: GDE-SUEJ6-I							EXHAUST: GDE-SUEJ6-E
VALVE SEALS	INTAKE: VS-TS6-E							EXHAUST: VS-TS6-E
CAM FOLLOWERS	CF-35/2.7+ or CF-35/3.7+ (+ Shims 1.5mm to 3.2mm thick) Both Versions of retainers for over the bucket and under the bucket shims are available
SUBARU EJ25 Non Turbo DOHC
	INTAKE VALVE						Part Number	EXHAUST VALVE					Part Number
	Head Diam		Stem. Diam		Length		Black Nitrided	Head Diam		Stem. Diam		Length	Black Nitrided / Inconel
EJ25 Non Turbo SOHC 99-05	36.00mm (std)		5.96mm		105.9mm (std)		SIVN-1016	32.00mm (std)		5.96 mm		106.2mm (std)	SEVN-1016 / SEVI-1016
EJ25 Non Turbo SOHC 99-05	37.00mm (+1.0)		5.96mm		108.10mm (oversize)		SIVN-1015	33.00mm (+1.0)		5.96 mm		108.35mm (oversize)	SEVN-1015
ENGINE COMPONENTS
VALVE SPRINGS	Outer Spring			Inner Spring		Pressure (lbs@mm)		Max Net lift	Coil Bind		Rate	Titanium Retainer
Part Number	O.D. (mm)	I.D. (mm)		O.D. (mm)	I.D. (mm)	Seat	Open (lift)	mm	mm		lbs./mm	Part Number
SPR-TS1015/SU5	27.50	20.00		20.00	15.20	70 @ 35.5	209 @ 11.5	13.80	20.70		12.10	RET-TS60/WRX1 + SEAT-TS/SUB-5 (no OEM)
VALVE SEALS	INTAKE: VS-TS6-I							EXHAUST: VS-TS6-E
CAM FOLLOWERS	CF-35/2.7+ or CF-35/3.7+ (+ Shims 1.5mm to 3.2mm thick) / RET-TS60/STI available for Under the Bucket Shim (JDM)
TITANIUM VALVES	PLEASE CALL
SUBARU EZ30 H6 24v
	INTAKE VALVE						Part Number	EXHAUST VALVE					Part Number
	Head Diam		Stem. Diam		Length		Black Nitrided	Head Diam		Stem. Diam		Length	Black Nitrided / Inconel
EZ30 H6 (1st Gen)	35mm (std)		5.48mm		103.4mm		SIVN-2301F	30.5mm (std)		5.45mm		103.25mm	SEVN-1021D
	36mm (+1.0)						SIVN-2304D	31.00mm (+0.5)					SEVN-1030D
								31.5mm (+1.0)					SEVN-1033D
EZ30 w/AVCS (2nd Gen)	35mm (std)		5.45mm		99.8mm		SIVN-1043	30.5mm (std)		5.45mm		105.25mm	SEVI-1043D
ENGINE COMPONENTS
VALVE SPRINGS	Outer Spring			Inner Spring		Pressure (lbs@mm)		Max Net lift	Coil Bind		Rate	Titanium Retainer
Part Number	O.D. (mm)	I.D. (mm)		O.D. (mm)	I.D. (mm)	Seat	Open (lift)	mm	mm		lbs./mm	Part Number
EZ30 H6cyl. ( 1st Gen)
SPR-TS1015/SU6	27.50	20.00		20.00	15.20	63 @ 36.10	184 @ 10	15.20	20.70		12.10	RET-TS5.5/T1 + SEAT-TS/SUB
EZ30 H6cyl W/ AVCS Variable intake lift (2nd Gen)
SPR-H1002D (intake)	29.10	21.90		20.50	15.50	85 @ 31.9	195 @ 11	12.40	19.50		10.00	RET-H1000/T2 + Factory seat
SPR-TS1015 (exhaust)	27.50	20.00		20.00	15.20	60 @ 36.10	193 @ 11	15.40	20.70		12.10	RET-TS5.5/T2 + SEAT-TS/SUH6E
CAM FOLLOWERS (1st Gen)	CF-34/2.5+ or CF-34/3.5+ (+ Shims 1.5mm to 2.7mm thick)
CAM FOLLOWERS (2nd Gen)	Diam 33mm
SUBARU EG33 H6 24v
	INTAKE VALVE						Part Number	EXHAUST VALVE					Part Number
	Head Diam		Stem. Diam		Length		Black Nitrided	Head Diam		Stem. Diam		Length	Black Nitrided / Inconel
SVX 3.3L	36mm (std)		5.96mm		92.10mm (+2.0 / 4.5mmtip)		SIVN-1080	32mm (std)		5.96mm		92.7mm (+2 / 4.5mm Tip)	SEVI-1080

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