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| Kadett A/B Please post technical questions in the appropriate Technical Forum, unless it is very specific to the Kadett A or Kadett B. |
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#1 (permalink) |
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Opeler
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1.1 engine compressions
I have a 1971 Kadett with a 1.1 engine. The number stamped on the block starts out 11us-
After reading this thread: http://www.opelgt.com/forums/kadett-...-question.html and looking at the pictures in this thread: http://www.opelgt.com/forums/kadett-...ere-we-go.html and reading the 1971 factory manual, I figure I should have a 7.6:1 compression engine with dual carbs. In fact, The engine has single carb, and the linkage has been modified to accommodate. I also looked through the spark plug hole, and spotted 2 notches for the valves, and no dish in the top of the pistons. Does this mean the engine might have 8.2:1 compression ratio, and be from an older car? Or did the 1971 7.6:1 engines have flat top pistons, and some other method of lower compression, like different heads? I know with the 1900 engines, if you have flat top pistons, it's not a 7.6:1 engine, no matter what (stock) head you put on. Are things similar with the 1.1? --Karl |
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#2 (permalink) | |
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Cunning Linguist
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That said, maybe this US Opel engine chart will help |
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1960: ♥ '61 Rekord PII 1.7 3S 3.9 ♥ '69 Kadett LS 'sprint' 1.9 3A 3.18 1970: ♥ '70 GT 1.9 4S 3.44 ♥ '72 GT 2.2SSD 5S 3.44 ♥ '72 GT 2.4FI 5S 3.44P ♥ '73 GT 1.9FI 4S 3.44 ♥ '75 1900 1.9FI 4S 3.44 1980: ♥ '85 Bitter SC 3.9FI 5S 3.44P |
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#3 (permalink) |
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Opeler
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Thanks for the chart. Very helpful, since with the few clues I have, the engine matches a '69 11us. I need to get more agresive with scraping and cleaning to read the rest of the numbers.
And yes, I'm aware that with a car this old, and no known history, and obvious engine changes, This could be literally mix and match of anything. The engine runs on regular fuel w/o pinging, so i'm guessing it's not 9.2:1 compression. I suppose that fuel economy will be a tell, once I've run a few tanks of gas through it and have some numbers --Karl |
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