Sonata Compression ratio

Can anyone tell me the compression ratio of the 2.4 SOHC 8 valve engine (4GCS) used in the Hyundai Sonata circa 1991? TIA
DR

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According to the service manual, it's 8.5:1.
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hyundaitech wrote:

Thanks very much. Does the manual also give an expected compression reading (or acceptable range)?
DR
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