Miscellaneous data


Opel std camshafts data

Engine Timing Duration Overlap Valve lift Phasing
1.7N,1.5N 34-76/70-28 I/E 290/278 62 ? timing straight up
1.7N 44-86/84-46 310 90 9.95mm 1 in retard.
1.9SH, 1.7S 40-88/80-48 308 88 ? 4 in retard.
1.9N 44-86/84-46 310 90 9.95mm 1 in retard
20N,20S 32-90/72-50 302 82 10.467mm 9 in retard
20E 34-88/74-48 302 82 10.467mm 7 in retard.
2.2E 28-77/66-39 285 67 10.467mm 5.5 in retard
2.4E 38-84/78-44 302 82 10.467mm 3 in retard.
25E 40-80/80-40 300 80 cam lift 6.86mm 0
28H 32-90/72-50 302 82 cam lift 6.86mm 9 in retard.
30E 32-90/72-50 302 82 cam lift 6.86mm 9 in retard.

Compression table (by Enem)

X-axis means total displacement above piston. Y-axis means (cih) engine type in std-bore.

Some Enem cams to cih-engine specially for street use

(note this is old information, check news from Enem's site)

Cam

Best Range Mech./Hydr. Valve Springs Duration Lift mm.
P13 2000-6000rpm Hydr STD 276 11.2
Y12 2500-6500rpm Hydr STD 288 11.1
X1 2500-6500rpm Hydr Special 284 11.7
I10 2500-6500rpm Mech STD 280 10.9
I10turbo 2500-6500rpm Mech STD 280 10.9
Y12/P13 2000-6000 Hydr STD 288 11.1
E11 3000-7500 Mech Special 308 11.8

Other cams

Cam

Best Range Duration Lift
OP234 Kent Cams 2000-6000 280 10.89mm
OP244 Kent Cams 2500-7000 290 11.35mm,11.30mm
Crane street 290 11.55mm
OP254 Kent Cams 3000-7500 300 11.93mm,11.88mm
Crane rally 300 12.10mm
OP264 Kent Cams 4000-8000 310 12.52mm,12.47mm
Crane race/rally 324 12.96mm

Some cih Engine Data