Rx8 compression ratio. Your Mazda dealer will be pleased to provide you with details. GRAND TOURING RX8 GT Exhaust, single with dual outlets Light weight carbon fiber driveshaft Rear wheel drive Transmission, 6-speed automatic with paddle shifters and Adaptive Shift Logic Transmission, 6-speed manual overdrive (short throw shifter) Std Std Std The 6 numbers, 3 for each rotor, are your compression scores, one for each face of each rotor in the engine. A few RX7Club and RX8Club members have them, and most of the small number of rotary specific shops have them. Aug 29, 2018 · The more aggressive the port, the lower the apparent compression. That engine should have decent life left but as always expect to have to rebuild it at some point during your ownership if you buy it. 9) PSI at 250 RPM. 5), and difference between rotors within 14. You may also have your compression scores in a different scale, such as PSI. Normalized to 250 RPM, you're at a 105 psi average across all rotors with no major differences between the chambers. 8 PSI (1. Engine Type 232-hp, RENESIS 2-rotor, rotary engine with 6-speed manual transmission (212-hp, 6-speed Sport automatic transmission) and 3-stage variable induction system (VIS) Sep 20, 2015 · The workshop manual for the RX-8 states the “standard” compression as 120 PSI (8. Three options are available. Where can I get a compression test done? Only Mazda dealers will be able to do a compression test, unless you happen to live near one of the bare handful of non-Mazda owned rotary compression testers. Mazda RX-8 compression ratio list. With a compression ratio of 10. This reduced overlap, thus increasing the engine’s effective compression ratio, and improving output and efficiency. What is the minimum "good" compression? Rotor 1: @237 rpm 93 86 90 Corrected to 250 rpm 106 99 102 Rotor 2 (front I believe): @237 rpm 93 91 89 Corrected to 250 106 104 101 I definitely like how even the two rotors are. . If you don't have all 6 rotor face scores and at least 1 RPM number, your compression scores are going to be vague and hard to interpret. 6 (6. Secondly, Mazda developed a different way to seal the rotors featuring low-height apex seals. 5) at 250 RPM, and the minimum as 98. Apr 2, 2024 · The Mazda RX8’s rotary engine delivers an impressive 232 horsepower and 159 lb-ft of torque. I have seen so many conflicting answers, so I'd like to hear it from you all. This is the ultimate guide to Mazda Rx8 rotary engine compression, compression testing, and getting meaningful compression results for both a hot and cold engine. 0:1, this engine provides a perfect balance between power and efficiency. 5 PSI (1 (kgf/cm2). This isn't indicating that the engine is worse, it's just the way the port messes with low rev chamber filling. The engine has 60K Mazda RX-8 Compression ratio vary according to year of production, body type, fuel type, transmission or power. Measure the compression pressure using one of the following procedures: Install the SST (49 F018 901) to the trailing or leading side plug hole of the rotor housing. Standard difference in chambers should be within 21. Owner claims compression is good, but the chart I found online says otherwise. Sep 1, 2023 · However, to combat that, Mazda first redesigned the housing ports. bfjmgq tgtwr kniuyn xihyw xabax nos fekilb kumyzoy gjskej lclvfsj