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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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  #1  
Old 06-24-2005
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RPM Question

Since we dont have a redline....i was wondering what really was the safest rpm to rev our motors to in neutral/park? just one of those curious questions that appeared in my head
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  #2  
Old 06-24-2005
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Uh, so what do you call the big red section of the tach around 4500 or so (don't remember the exact point).
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Old 06-24-2005
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one question WHY....
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  #4  
Old 06-25-2005
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well, you should have a rev limiter at roughly 3k unless you have a tuner




Quote:
Originally Posted by FireRanger
Uh, so what do you call the big red section of the tach around 4500 or so (don't remember the exact point).
Not all are marked like mine. Look at bigwill's thread, his doesnt have it marked either
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Old 06-25-2005
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i dont have any markings either...not that it matters much with an automatic...
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Old 06-25-2005
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I DONT HAVE A TACH so infanite red line!!!!!!!!!!!!!!!!!!!!!! j/k....
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  #7  
Old 06-25-2005
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Quote:
Originally Posted by Redneckstone
I DONT HAVE A TACH so infanite red line!!!!!!!!!!!!!!!!!!!!!! j/k....
heh, i feel your pain, my 85 XJ doesnt have a tach either...just a shift light that is a joke!
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Old 06-25-2005
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Quote:
Originally Posted by Draimen
heh, i feel your pain, my 85 XJ doesnt have a tach either...just a shift light that is a joke!
i dont need a shift light, tach, or watching the speedo. you drive enought sticks and you can tell when it needs to shift. you get used to it. i never looked at my tach i had in my F-150 eather. just joking around haha
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  #9  
Old 06-25-2005
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yes i know its a stupid question but my girlfriend jumped in my truck last night and i couldnt get her out and she revved it up around 4500 and i was just wonderin if it couldve done any damage.........ooooooo i was pissed
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  #10  
Old 06-25-2005
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Well I am not sure what the OHV rev limits at but the SOHC limits at around 3k. It won't do any damage.
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  #11  
Old 06-26-2005
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I know the 2001+ have a limiter in park and neutral of 3000...

Speaking of limiter I was on a very small construction on ramp yesterday
and my tach hit the 40 on the speedo.
It was seriously about an inch past the 6 on the tach.
(there is no reline on the tach but I understood its around 6200??)

Yey apten chip (when I blow up my engine lol)

Rand
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  #12  
Old 06-26-2005
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Yeah, the actual redline I hit in my SOHC was around 6200. Neutral was 3000. Big whoopie. Cam's love to scream. OHV's, they like lower RPM's, but I had my old '94 Splash in the upper range all the time. Ran good too.
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  #13  
Old 06-26-2005
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Wow, did you have an auto or manual tranny? I didnt think that my auto tranny would take it that far up the rpm range (6200), unless maybe you topped it out on the highway?
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  #14  
Old 06-26-2005
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Quote:
Originally Posted by Draimen
Wow, did you have an auto or manual tranny? I didnt think that my auto tranny would take it that far up the rpm range (6200), unless maybe you topped it out on the highway?
Sometimes it would like, have a hiccup and not shift when it should going down a hill with a slight tail-wind under WOT. Who knows, but I know I smacked the rev-limiter a few times. I think I have it on video, once. I'll see if I indeed do. Topping it out on the expressway was at 92-95mph and around 4200.
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  #15  
Old 06-26-2005
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Shows how much I pay attention. Looks like the earlier ranger(80s & 90's maybe) had a redline on the tach. The newer ones don't. Mine will limit at 3k in park or neutral. I think I had it almost up to 5k once.
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  #16  
Old 06-26-2005
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6200?? whew! that makes me feel better! thanks
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  #17  
Old 06-27-2005
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Quote:
Originally Posted by Draimen
well, you should have a rev limiter at roughly 3k unless you have a tuner






Not all are marked like mine. Look at bigwill's thread, his doesnt have it marked either
Wow You use my name... Thanks...
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  #18  
Old 06-27-2005
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I thought the 6200 number was where the rev-limiter kicked in. Those of us w/o autos will be able to hit it in neutral or w/ the clutch in at will. I wouldn't worry about it though. The rev-limiter is there to protect the engine. In the days before limiters red lines were painted on the tachs so that we would protect our engines.. nowadays the computer does it for us.

There's barely a need for the tach in our trucks anyhow. In my experience the engine pretty well quits making power past 5000-5500 RPM or so. If you haven't shifted before hitting the limiter you're just making noise..
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  #19  
Old 06-27-2005
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Quote:
Originally Posted by vansnxtweek
6200?? whew! that makes me feel better! thanks
WOW! Don't do that to your motor! You have the OHV, this beast will not even rev that high to begin with... The redline on the OHV is 5500 I do believe. You can feel this motor start to level off at 4500 RPM, over 5000 it feels dead. The only time my engine ever sees RPM's over like 4000 is in 4low or passing and it shifts down to 2nd...

On the original topic, there is no rev limiter in park on the OHV like the newer ones, at least not that I'v ever hit.. first time I ever experianced that on an OHC I was like WTF IS THAT!
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  #20  
Old 07-03-2005
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i've had experience with both the SOHC and the OHV...

i'd beat the snot out of the SOHC. however, i was brave enough to push it all the way to the top only once, and i wasn't too comfortable with that. otherwise, i never seemed to have a problem... it actually seemed to like it.

the OHV... i didn't drive for nearly as long as the SOHC, but i never had any problems/explosions/spontaneous combustions.

then again... i tend to be pretty darn reckless. i guess you could say im not exactly a role model

either way, tippin 4500 ain't no biggie.
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  #21  
Old 07-04-2005
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alright good i feel a whole lot better
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  #22  
Old 07-04-2005
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I hope its not lower, I shift my 3.0 at 5900rpm.
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  #23  
Old 07-04-2005
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I have been known to shift at 6000 every once in a while :) MMMM barking 2nd and chirping 3rd :)
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  #24  
Old 07-04-2005
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Quote:
Originally Posted by Rand
I know the 2001+ have a limiter in park and neutral of 3000...

Speaking of limiter I was on a very small construction on ramp yesterday
and my tach hit the 40 on the speedo.
It was seriously about an inch past the 6 on the tach.
(there is no reline on the tach but I understood its around 6200??)

Yey apten chip (when I blow up my engine lol)

Rand

i was power braking mine once then lokked down and noticd the tach was way up there, no problems yet
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  #25  
Old 07-04-2005
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Yeah, just as long as she didn't just stand there for several minutes. That is why I don't let anyone else drive my truck....EVER!
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