OPEL / VAUXHALL / GM Ecotec Z20LET / LEH / Opel Astra / Speedster/ Zafira
Head Diam
Stem Diam
32.5 mm (+0.5) 33.0 mm (+1)
INTAKE VALVE PART NUMBER Length
5.96 mm
102.15 mm
5.96 mm
102.15 mm
5.95 mm
30.0mm (+1)
5.95 mm
GIVN-3312S
GIVN-3313S
EXHAUST VALVE PART NUMBER
BMW S54 24v 3.2 Lts / M3 / 2002 + Head Diam Stem Diam 29.5mm (+0.5)
Black Nitrided/Inconel
Black Nitrided/Inconel
Length 92.3 mm
GEVI-3312S
92.3 mm
GEVI-3313S
SPRING KITS VALVE SPRINGS Part Number SPR-TS1015-Z20
Outer Spring O.D. (mm) I.D. (mm) 27.50 20.00
SPR-TS1012-Z20
27.50
20.00
Inner Spring O.D. (mm) I.D. (mm) 20.00 15.20 20.00
15.20
Pressure (lbs@mm) Max Net lift Seat Open (lift) mm 75@35.10 195 @ 10 14.40 64@35.10
180@ 10
15.10
Coil Bind Rate Titanium Retainer mm lbs./mm Part Number 20.70 12.10 RET-TS55/T5 + SEAT-TS-Z20 20.00
9.60
RET-TS55/T5 + SEAT-TS-Z20
ENGINE COMPONENTS VALVE SEALS CAM FOLLOWERS KEEPERS
INTAKE: VS-VBM6-I INTAKE: VS-VBM6-I CF-32/15-LC6 KPR-6S/7 - Valves have been converted to Single groove for high performance.
OPEL Z16 / Z18 LER/ A18XER
Head Diam 31.3 mm
INTAKE VALVE PART NUMBER Stem Diam 4.96 mm
BMW S54 24v 3.2 Lts / M3 / 2002 + Head Diam Stem Diam 27.5mm (+0.5)
4.95 mm
Black Nitrided/Inconel
Length
118.38 mm
GIVN-3320S
EXHAUST VALVE PART NUMBER Length 113.15 mm
Black Nitrided/Inconel GEVI-3320S
SPRING KITS 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-MC56BE 23.30 16.80 18.80 12.30 62@34.60 150 @ 10 11.40 22.20 9.70 OEM RETAINER + (single beehive) OEM SEAT
ENGINE COMPONENTS VALVE GUIDE CAM FOLLOWERS VALVE SEAL
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GDE-OP50 5 Thicknesses to choose from: CF-32/3.10 ; CF-32/3.25 ; CF-32/3.35 ; CF-32/3.55 ; CF-32/3.70 VSI-GM50-E INTAKE + EXHAUST