1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Compression Numbers

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Old 02-03-08, 11:57 AM
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Compression Numbers

Hey guys its my first post in the 1st gen section, I am going to go look a SA later today if it all works out right and was going to do a compression test before I buy I know my FC is aroung 130psi max on each rotor but is a 12a the same? What compression numbers should I get out of a good 12a? I know how to do a compression test on my 13b, just wondering about the numbers on this one. Thanks
Old 02-03-08, 05:20 PM
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Between 100-120 is good. 80 Works even but expect a rebuild in the near future.
Old 02-03-08, 05:49 PM
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https://www.rx7club.com/1st-gen-archive-71/engine-compression-test-using-piston-engine-tester-597883/
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