2nd Generation Specific 1986-1992 Discussion

1990 Rx-7 Gtu S5 Rotor Compression

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Old 03-14-2004, 04:17 PM
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I was wondering what compression rotors are in the 1990 GTU rx-7.

Also what are the different comp ratios mazda has in the different generation rx-7s?
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Old 03-14-2004, 04:33 PM
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FAQ's section
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Old 03-14-2004, 10:15 PM
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9:7:1 for s5 na... 9:0:1 for s5 turbo and fds

9:4:1 for s4 na and 8:8:1 for s4 turbo
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Old 03-15-2004, 07:03 AM
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so which compression rotors would be best for a high comp. engine....s5 n/a??
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Old 03-15-2004, 11:45 AM
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Originally Posted by bart3lz' date='Mar 15 2004, 05:03 AM
so which compression rotors would be best for a high comp. engine....s5 n/a??
yup
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Old 03-15-2004, 11:54 AM
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Originally Posted by j9fd3s' date='Mar 15 2004, 12:45 PM
yup
rx8 rotors!
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