Quote:
Originally Posted by STR8-6IX
if the engine sounds fine under heavy load/ high RPM, and you cannot replicate the sound when the engine is not under load, I am starting to thing it is not the engine. possibly driveshaft, maybe transmission? something drivetrain related.
the Indy checked the motor and found it to be in good shape right? great choice on the oil/weight BTW. you know whats good when it comes to FBO.
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It's RPM related not speed related (watch the vids). RPM related means engine every time. It's just that it needs to be under heavy decel (i.e. extremely light load) that can't be recreated free-revving.