Opel straight-6 engine
{{Infobox automobile engine
|name=Opel Straight-6
|aka=Vauxhall Straight-6
|manufacturer=Opel
|production=1930-1966
|successor=Opel CIH engine
|configuration=Naturally aspirated Straight-6
|valvetrain=OHV 2 valves x cyl.
|fueltype=Petrol
|fuelsystem=Carburetor
|coolingsystem=Water-cooled
|displacement={{convert|1790|cc|L|1|abbr=on|disp=flip}}
{{convert|2605|cc|L|1|abbr=on|disp=flip}}
|bore={{convert|65|mm|in|2|abbr=on}}
{{convert|85|mm|in|2|abbr=on}}
|stroke={{convert|90|mm|in|2|abbr=on}}
{{convert|76.5|mm|in|2|abbr=on}}
|power={{convert|33.5-91|PS|hp kW|abbr=on}}
|torque={{convert|100-186|Nm|lbft|0|abbr=on}}
|compression=7.8:1
}}
Opel used the straight-6 engine configuration for many years. Opel used two straight-6 engines prior to the better-known CIH engine family.
Moonlight
The Opel Moonlight roadster was the first Opel vehicle with a straight-6. It used a {{convert|1790|cc|L|1|abbr=on|disp=flip}} six in 1933. It was a 12-valve engine with a very-undersquare {{convert|65x90|mm|in|2|abbr=on}} bore and stroke, typical for the time. This engine produced {{convert|33.5|PS|hp kW|abbr=on}} and {{convert|100|Nm|lbft|0|abbr=on}}.
Kapitän
The 1959 Opel Kapitän was the next vehicle from the company with a straight-6 engine. This was a {{convert|2605|cc|L|1|abbr=on|disp=flip}} unit with 12 overhead valves. Bore and stroke were now oversquare for high power output at {{convert|85x76.5|mm|in|abbr=on}}. A single Opel-designed carburetor and 7.8:1 compression yielded {{convert|91|PS|hp kW|0|abbr=on}} and {{convert|186|Nm|lbft|0|abbr=on}}.
See also
References
{{reflist}}
{{General Motors}}
{{Opel}}
{{DEFAULTSORT:Opel Straight-6 Engine}}