Deceased10

Hey guys so I just test drove an RX-8 it ran very nice, and seemed like a really nice car. the only thing is, I don't know anything about rotary engines and also wanted to know if rumbling is normal in idle? It seems that when the car is idling it has a rumbling kind of sound like it wants to go forward, and I can feel it in my seat. It is hard to explain but once I take off from stop position, it leaves and everything else is normal. If anyone could help me out that would be great! Also if anyone could point me to a good thread where I can learn about the engine that would be great or some sort of maintenance guide.

Thank you very much

RIWWP

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Depending on the exhaust, ignition condition, motor mount condition, compression scores, etc... yes, a certain amount of rumbling is normal at idle. Idle is 750rpm, and each rotor is only spinning at 250rpm at that point.