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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 02-16-2009
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max rpm

hi i have a 2009 ranger sport 4x4 5 speed and was wondering does anybody know what the red line is it doesn't show on the truck it just goes to 7000rpm and i think that would be alot or does a revalimter kick in or some thing i heard people say its 5200rpm but not sure
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Old 02-16-2009
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Rev limiter on a 5 speed.... wouldnt be fun lol..Im sure someone will know. Also on my 97 5 speed 2.3, i didnt have a tach lol..
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Old 02-16-2009
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my auto redlines at about 5000 something. Ive only done it once and i barely looked at the tach
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Old 02-16-2009
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6100ish.
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Old 02-16-2009
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not if the tac goes to 7 with no red i bet its more like 7k
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Old 02-16-2009
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With my 03 Ranger FX4 with a 4 L auto I've hit 6500 RPM. Going past 5500 isnt nice though.
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Old 02-16-2009
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Quote:
Originally Posted by Downey View Post
not if the tac goes to 7 with no red i bet its more like 7k
Well my speedo goes to 120 but the limiter is at 91. Just because the gauge says so doesn't mean the engine says so.

Limiter is at 6100ish RPM
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Old 02-16-2009
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my old 2.3 didn't have a rev limiter

after the cam kit, i had it up to around 6500 once.......i was afraid to go any higher
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Old 02-16-2009
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cool thanks alot yea mines a 4.0l and i have only at it up to 4000rpm
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  #10  
Old 02-16-2009
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well really just as a general rule you dont rev your engine 10% past its max hp rpm. like the 4.0L ohv engine makes 160 hp at 4200 so around 4600 or 4700 rpms max
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Old 02-16-2009
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psht, thats weak, i get 4000 wen i pull out in front of somebody, it sounds bad *** wen its redlining but i don't like it much, a little scary.
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Old 02-16-2009
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redline is 6000 RPM on a SOHC

redline on a OHV 4.0 is 4800 RPM
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Old 02-16-2009
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i have hit above 6K thats all the tach goes to..
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Old 02-16-2009
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I've hit higher then the tach goes on my 02'. I'm sure someone knows exactly when the revlimiter is active for a stock 4.0. I'm guessing 6200ish
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Old 02-16-2009
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Quote:
Originally Posted by Downey View Post
not if the tac goes to 7 with no red i bet its more like 7k
I doubt it. The 2.3 Duratec makes max power at 5250 rpm, so I'm pretty sure friction would take over well before 7000 to the point of not only would it be very damaging, but the engine probably physically couldn't make it that high, except maybe in 1st gear. The ignition/electronics probably limits it at 6500 at the very most.

BTW, I had an Accord that also made max power at 5250 rpm as well. The tach ran all the way up to 8k, but I know there's no way in he// it could physically get close to that, with or without a rev limiter.
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Old 02-17-2009
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redline is marked out on my Mazda guages... 6000rpm even. And there is a limiter there, i can attest to this from racing many a Fox-Body Mustangs :D
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Old 02-17-2009
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Quote:
Originally Posted by rolsmojave3 View Post
I've hit higher then the tach goes on my 02'. I'm sure someone knows exactly when the revlimiter is active for a stock 4.0. I'm guessing 6200ish
i've done it when off roading but i never pay attention to the needle (auto trans but i shift manually when abusing the truck) i just hear the rev limiter (niiiiice sound) and then i shift to 2nd but yea 6200ish is about right on a SOHC 4.0
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Old 02-17-2009
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6148 actual redline/rev limiter

Last edited by robert ray69; 02-17-2009 at 06:36 AM.
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