MazdaLove

So I went to go get a compression test done and they told me that Rotor #1 is doing max of 6.0 while rotor #2 is doing max of 7.4. The lowest Rotor #1 got was 5.8 and the lowest rotor #2 got was 7.0

My questions is, time for a rebuild?

And someone asked me what these numbers meant in PSI and I wasn't sure what to tell them. Any ideas?

bee

Probably, but I would just keep driving the car till it doesn't idle anymore. You having any drivability problems?

MazdaLove

Nope, none at all. It does just fine except in really really hot weather which ( I hear) is a normaly thing for Rx-7. It idles just fine though...so I guess no real worries. Any comments about the PSI Thing?

the_glass_man

iTrader: (2)

The compression is low on one of the rotors. They also shouldn't shouldn't be such a discrepancy between the two.

bee

Agreed, but if it still runs fine I would keep driving it. Unless of course your sitting on a pile of money and are just itching for that half bridge, probably not though.

Gadd

6.0 kg/cm2 = 85.34005984 psi

7.4 kg/cm2 = 105.2527405 psi

5.8 kg/cm2 = 82.49539118 psi

7.0 kg/cm2 = 99.56340315


or there abouts