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Dyno results


evilwrench

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I'm shopping for a Volvo 780 and I want to have it inspected and a dyno pull done by a shop other than the seller.

A salesman told me that it should make 78% of rated power or more. Does that seem low? I think I'd be a lot happier with 85 or 90%. What has been your experience?

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dyno numbers can be misleading unless they are corrected to SAE standards for elevation, tempature, humidity and barometer readings, then figure approximatly 10 or 15% for driveline loss. If you get a good 80% corrected number and the blowby is low relative to the factory tolerance/allowance it's probably a good sound engine, just remember it's not new and anything can happen at any time.

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