Re: 4020 engine torque??

Posted by RodInNS on December 28, 2006 at 13:42:53 from (142.177.106.140):

In Reply to: Re: 4020 engine torque?? posted by jdmaris on December 28, 2006 at 11:31:43:

Not sure I'm following your question exactly.... but, peak power falls in the 1800-2200 range, depending on the engine. Peak torque will fall in the 1200-1600 range, again depending on the engine. If you follow the calculations through, you'll find that the torque at peak power is far less than the peak torque. That could range anywhere from 10% up to near 60% depending on the engine, and that's what they like to term torque rise these days. Must seem impressive to put a number like that on paper. On the other hand, when the engine is at peak torque, power has about gone to hell, and might be half of rated power. There were very few engines, (the old square Fords being among them) that carried their torque from idle to rated power. A lot of them had torque rises in the 12-17% range, which didn't make a big peak number... but they'd pull their holes out right off idle, and go with it. That's something that a lot of the engines that put big numbers up can't do.... Clear as mud?

Rod

Replies:

• Re: 4020 engine torque?? buickanddeere 00:43:08 12/29/06 (0)

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