Motor .- Optischer Unterschied 207 R und 207 E/L

[Urbaner]

Da bringst du was durcheinander. Alle B207 sind GM Motoren wenn man so will. Der B207L heißt bei Opel Z20NET, die B207E und R gab es bei Opel nicht. Vermutlich war mal eine Version mit 210 PS geplant, die dann vermutlich Z20NER geheißen hätte aber de facto gabs den nicht bei Opel in der Leistungsstufe. Der Z20LER, genauso wie T, L und H am Ende sind alles "echte" Opel Motoren wenn man so will.

faktisch sind die alle von GM, allerdings ist die Z20-Reihe tatsächlich von Saab entwickelt worden (so diverse Quellen im Netz). Opel war dann wieder federführend bei den X20 bzw. X22 Motoren.

Wikipedia:
This engine is also known as B207 when used by Saab and Z20NET by Opel for use in the Vectra C and Signum.

LK9 is a turbocharged 2.0 L— 1,998 cc (121.9 cu in)—version of the L850 (86 mm bore) series Ecotec utilizing an all-new reinforced sand cast aluminum cylinder head and upgraded internal components. The engine features a five-bearing forged steel crankshaft, strengthened connecting rods, redesigned pistons, piston oil cooling jets, reprofiled camshafts and an integrated oil cooler[3]. The exhaust valves are liquid sodium-cooled. All vehicles using this engine feature Saab's Trionic 8 (T8) engine management system as well as a revised valve train. The timing chain and timing gears are also new, along with Saab's Direct Ignition system. The reinforcements, turbocharging, intercooling, internals, dual overhead camshaft, and such were developed by GM Powertrain Sweden (Saab Automobile Powertrain). It features an 86 millimetres (3.4 in) bore and stroke and a 9.5:1 compression ratio. Maximum power is 210 horsepower (160 kW) at 5300 rpm and 221 ft⋅lb (300 N⋅m) of torque at 2500 rpm. Maximum boost is 12.3 psi (0.85 bar).