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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 01-15-2011
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Icon5 When should I shift gears?

I just recently got Ranger with a 4.0 SOHC and 5-speed manual transmission.
It's a 4X4 and it has the 3:73 rearend. I've been shifting at 3000 RPM.
Is that too high?
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Old 01-15-2011
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For what? MPG ? Speed?
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Old 01-15-2011
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Originally Posted by evilclown312 View Post
For what? MPG ? Speed?
Just for normal driving. If I'm racing someone, I don't shift until my tac reaches 4000 RPMs
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Old 01-15-2011
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For mpg and norman cruising I shift at about 1800-2000. Sometimes even like 1600.
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Old 01-15-2011
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Yeh about 1500-2500 sepending on how fast you need to get to speed, should be reving higher racing though lol.
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Old 01-15-2011
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lol i can't shift at 1,500rpms in my 3.0 5-speed. It lugs so bad when it gets in the next gear. I go to 3,000 rpms also and get like 16,17 mpg. 2,500 is my lowest rpms i can shift at without luging it.
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Old 01-15-2011
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my old 93 3.0 I did

1st-2nd = 15mph
2nd-3rd = 25mph
3rd-4th = 35-40mph
4th-5th = 45-55mph

I was averaging 19-20mpg

Dont ask me RPMs cause I didnt have a Tach
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Old 01-15-2011
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i shift mostly between 2500 and 3000rpms. sometimes 3500 or more if i'm getting on the expressway and want to get up to speed quicker.
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Old 01-15-2011
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Quote:
Originally Posted by BlackRanger04 View Post
Just for normal driving. If I'm racing someone, I don't shift until my tac reaches 4000 RPMs
Thats funny... in my car I don't even have any power at 4000rpm. When I'm racing someone, I shift at 9500rpm.
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Old 01-15-2011
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Originally Posted by Jp7 View Post
Thats funny... in my car I don't even have any power at 4000rpm. When I'm racing someone, I shift at 9500rpm.
That's a rice rocket for ya'.
No power where it counts.

I don't think 3000 RPM is to high in the first couple gears.

Last edited by N20-3.0; 01-15-2011 at 04:21 AM.
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Old 01-15-2011
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actually im pretty sure in the manual it states from like 2200-2500 for the best fuel economy and such.

Mines all by feel just because I have drove a manual for so long but its honestly around 2500 most of the time.

The manual also states speed instead of rpm's if thats easier to, which im pretty sure is like 1st-2nd at 11mph, 2nd-3rd at 22, 3rd-4th at 33, and 4th-5th at 44!

Dont 100 percent quote me because im at work and the manual isnt next to me but I can tell you that the rpms and speeds I just gave you are damn near close to what the manual says
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Old 01-15-2011
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i shift between 2500-3500
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Old 01-15-2011
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Quote:
Originally Posted by Ranger_EDGE View Post
lol i can't shift at 1,500rpms in my 3.0 5-speed. It lugs so bad when it gets in the next gear. I go to 3,000 rpms also and get like 16,17 mpg. 2,500 is my lowest rpms i can shift at without luging it.
lol yea i got you. with my 4.o and 4.10's it is def low rpm but it wrks
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Old 01-15-2011
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with the SOHC 4.0 you be shifting higher than the OHV 4.0 guys. The SOHC likes to rev high and has high end HP. The OHV is a lower end HP engine.
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Old 01-15-2011
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Originally Posted by Masteratarms93 View Post
with the SOHC 4.0 you be shifting higher than the OHV 4.0 guys. The SOHC likes to rev high and has high end HP. The OHV is a lower end HP engine.
that makes a lot sense. didn't know that
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Old 01-15-2011
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The powerband is the range between peak torque, and peak power.
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Old 01-15-2011
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From the manual. It does not specify different speeds for different engines

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Old 01-15-2011
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The powerband is the range between peak torque, and peak power.
so you have one of these?
Adjustable Powerband - $249.95 : KaleCoAuto, Hard to find automotive items!
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Old 01-15-2011
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Originally Posted by btm757 View Post
your silly.

For economy driving its a poor decision too shift to early and induce load by being at too low rpm. When you do this you will lose timing and dump fuel. This nearly always causes the AFR to dip in the 13s under easy driving.


For performance driving the peak of the torque curve comes where the VE is the highest. From there forward the constraints on the system start to bring the curve down. Each power pulse loses some punch, but you have more of them per second, so the power will climb.

Last edited by Jp7; 01-15-2011 at 02:18 PM.
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Old 01-15-2011
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^ Yea! What he said
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Old 01-15-2011
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Thanks for all the advice guys
It seems like the best time to shift is 2500 RPM for the 4.0 SOHC
Most of the time I find myself shifting into 5th at 55 MPH because the accelleration is so fast with the 4.0L
I used to have a 94 with a 4.0 OHV, and I can really tell the SOHC makes a lot of power at high RPMs
It doesn't like going 80 MPH on the interstate, but the little 4 bangers sure aren't blowin my doors off like they did with the 3.weak.

Last edited by BlackRanger04; 01-16-2011 at 06:48 PM.
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Old 01-15-2011
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Shift it by feel, i wish i had a stick, so much more fun.
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Old 01-16-2011
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Quote:
Originally Posted by Jp7 View Post
The powerband is the range between peak torque, and peak power.
Really, I don't think any of us knew that. You must be really smart!
Quote:
Originally Posted by Jp7 View Post
your silly.

For economy driving its a poor decision too shift to early and induce load by being at too low rpm. When you do this you will lose timing and dump fuel. This nearly always causes the AFR to dip in the 13s under easy driving.


For performance driving the peak of the torque curve comes where the VE is the highest. From there forward the constraints on the system start to bring the curve down. Each power pulse loses some punch, but you have more of them per second, so the power will climb.
One again you have stunned me with your knowledge! I don't think anyone would ever have a clue if you hadn't of told us!
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Old 01-16-2011
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I don't think anyone would ever have a clue if you hadn't of told us!
Stop trying to start trouble. Nice strategy though - why don't you just insult my mother?
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