Mazda RX-8 Rotary Compression Test

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This was an attempt to see what compression this Renesis Rotary Engine was outputting. Symptoms were okay cold starts, running great at speed, no creep on the coolant or oil pressure, hot starts near impossible, pop starts while hot worked fine, idle a little bit of fishing but nothing close to stall.

Опубликовано:

11 окт 2024

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Комментарии : 6

@carlosroberto167 7 лет назад

those are good numbers?

@sshawn09 7 лет назад

Bad... Hill Bill explained it well.

@pat1019 5 лет назад

110-115 psi would be acceptable

@MartinProavis 4 года назад

110 - 115 new engine. Min 75 good engine.

@hillbill3502 7 лет назад

No not really because of multiple reasons: After you normalise the numbers to 250 RPM at sea level you will find out that: 1 The difference between the Rotor faces is to big, which will lead to increased wear on the bearings 2. The compression is to low on one of the faces. In this case 85-95 PSI all around would have been a good result If you want to get precise numbers you can use this calculator to see, what youre results actually mean foxed.ca/index.php?page=rotarycalc