Rotor compression inbalance
#2
What am I doing here?
Join Date: Mar 2006
Location: 2017 Miata RF Launch Edition
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Within what range? If those are normalized to 250 RPM, both are failing.
The ramifications are that you aren't making anywhere near normal power levels. If it still runs, good for you but it's time for a rebuild.
The ramifications are that you aren't making anywhere near normal power levels. If it still runs, good for you but it's time for a rebuild.
#3
Lumpy idle
#5
Registered
Search for rx8 compression chart. At 250rpm 98psi is the failing line. 72psi is extremely low.
#7
Smoking turbo yay
^yep, sounds to me that OP didn't use the right tool.
You need a rotary-specific compression tester. You will have to go to a Mazda dealer or a rotary shop to get it done.
Rotary compression changes quite a bit depending on cranking RPM. You also need to warm up the engine before testing.
You need a rotary-specific compression tester. You will have to go to a Mazda dealer or a rotary shop to get it done.
Rotary compression changes quite a bit depending on cranking RPM. You also need to warm up the engine before testing.
#8
40th anniversary Edition
Sounds like low compression with those numbers. If you can get a full rotary-specific compression test to refute those numbers, ok, otherwise face the facts and get that rebuild.
Last edited by gwilliams6; 03-04-2018 at 09:07 AM.
#9
40th anniversary Edition
https://www.rx8club.com/rx-8-discuss...ilders-265177/
RX8club's BigCajun's compiled list of known reputable Renesis engine rebuilders in the US. Cheers
RX8club's BigCajun's compiled list of known reputable Renesis engine rebuilders in the US. Cheers
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