Hey I have a 1999 for ranger XLT 4x4 4.0 but im not sure if i have the sohc or the other one. How do I find this out?

Thanks
Dan

 

sohc came on 2001+. You have the other.

 

mmk. Thank You. I also heard that the other one is better than the ones that came out in 2001 and up is that true?

I am also looking into buying a K&N cold air intake. On two differnt websites they have one thats (fuel injection performance kit)

http://www.autoanything.com/air-inta...0A2606716.aspx

and the other is a generation 2 air intake.

http://www.performancecenter.com/pro...99/Ranger/4.0L


Whitch one is right for me?

 

The pushrod 4.0 has more torque than the SOHC. Better? You would have to ask oushrod 4.0 owners.

Those intakes are the same.

 

You have the 4.0L OHV motor. The 4.0L SOHC motor started in Rangers beginning in 2001. The OHV is good for 160 hp and 225 lbft, while the SOHC motor is good for 210 hp and 245 lbft or so.

 

You are incorrect... The push rod motor has 160hp and 225 lb/ft of torque. The SOHC has 207 hp and 238 lb/ft of torque.

These are the specs for the explorer/mountaineer 4.0, the rangers are slightly less (see above)

 

yes but what rpm are they making those numbers at? the pushrod makes those numbers at a much lower RPM than the SOHC, which is why it is really a better engine for trucks you want that grunt without bringing the rpms up.

but the SOHC really likes to move when you get those rpms past 3000

 

which is all fine and dandy, unless you are like me and shift at 2000-2500 almost all the time.

 

I thought the pushrod motor had mor torque. My bad.

 

yea sohc doesnt have any ***** till about 27-2800 rpm.

 

^^True... it is kind of nice though because towing (SOHC) with my boat at 65-70 on the freeway puts me right around 3000 rpms in 4th gear...

Actually if you look at the peak torque of modern engines (not diesel) the torque peak is a lot higher in the RPM range then it use to be. Engineers have found that a flat torque curve thats starts out low (2000rpm or so) and gradually builds (or maintains) as the rpms increase is better for all around towing (city, hwy, start and stop)

 

And that's why a blower will be going on soon.

 

I don't know where the 4.0 OHV engine gets the reputation of having more torque than the 4.0 SOHC engine. The both have the same torque at 1,600 rpm. Below that rpm the OHV engine has from 3 to5 lb-ft more torque down to 1,000 rpm. Above 1,600 rpm the SOHC engine has more torque and has close to 13 lb-ft more torque when the OHV peaks at 2,750 rpm. The SOHC engine also does not drop off as much in torque after its peak compared to the OHV.

That does not mean the OHV engine in not a good engine but does not have better torque numbers than the SOHC engine unless you want to operate at 1,500 rpm or less. Neither engines do very well at those low rpms.

This information comes from published SAE net power ratings graphs from Ford.

 

^^^In your first line, I think you mean OHV right?

 

Yes greygooseranger, you are right. I was in a hurry when I typed that message and made several mistakes. I went back and edited, hopefully I got all the mistakes.

I know this thread is kind of old but I hate to leave mistakes.

 

the sohc is and will always be a better engine than an ohv 4.0. more h.p. more torque.
you can argue until your blue in the face with your 'what if's' and rpm numbers. i guarantee my sohc will beat any stock automatic ohv off the line. 160h.p. vs 207... no contest.

 

Does anyone have a hp/torque curve chart for a stock OHV?

 

I've had both engines and they are both great. The OHV has enough power for just about any situation, it seems like it has a heavier flywheel giving it a torquey affect. The SOHC is great, it likes revs, you can run it off the tach, grab another gear and it will pick up where it left off. It seems like it has a lighter flywheel then the OHV as you have to feather the throttle when taking off in first where as the OHV you can just slowly let out the clutch. Both are great but the SOHC whoops the OHV all around.