Powerband for a Duratec 4 cylinder - Ranger-Forums - The Ultimate Ford Ranger Resource


DOHC - 2.3L Duratec / Mazda L Engines Discussions and Topics specific to the Duratec 4 cylinder engines

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Old 03-02-2011
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Powerband for a Duratec 4 cylinder

I have a 2002 Ranger 5 speed with the Duratec 4 cylinder. I was wondering if anyone kew the peek rpm to shift gears for the best powerband?
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Old 03-02-2011
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Quote:
Originally Posted by 2.3L turd View Post
I have a 2002 Ranger 5 speed with the Duratec 4 cylinder. I was wondering if anyone kew the peek rpm to shift gears for the best powerband?
research your engines HP and Torque specs, and shift at max torque rpm +/- 500 rpm.
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Old 03-03-2011
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Peak horsepower is 5250 rpms.
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Old 03-03-2011
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Originally Posted by 06B2300 View Post
Peak horsepower is 5250 rpms.
Horsepower is a "reference", torque is pulling power and what you feel in seat of pants. IIRC 5250 is where torque and hp curves intersect but is that max for this particular engine?
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Old 03-03-2011
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Peak hp is 143 @5250 rpm, peak torque is 154 lb @ 3750 RPM. Not sure about where they intersect
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Old 03-03-2011
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Anyone have a dyno chart on a stock 2.3 Ranger?
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Old 03-03-2011
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Like someone already mentioned, try shifting at about the peak torque RPM.
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Old 03-03-2011
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??





Like its really going to matter where you shift....this aren't race engines. lul.
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Old 03-03-2011
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Like its really going to matter where you shift....this aren't race engines. lul.
Is that dyno chart from a Duratec engine, or a Lima?

Looks more like a Lima to my tired ol' eyes...
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Old 03-03-2011
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eh, probably a lima.
i saw a ton of duratec mazda 6 dynos on google image search. i don't know how different they are from ranger engines but at least its somewhere....
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Old 03-30-2011
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HP and torque always intersect at 5250.
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