SOHC/OHV/Pushrod help?

[Otto]

Trying to figure out if my engine is an sohc or a pushrod 4.0...I'm pretty sure the ohvs are 4 cylinders. Here's a pic anyways...efi is electronic fuel injection

 

[Otto]

Hate the 2d look the digital cameras make lol

 

[Bob Ayers]

Pushrod (OHV) 4.0L

It isn't digital cameras in general, just cheap digital cameras.........

 

[baxtej44]

just cheap digital cameras.........

ouch lol...

 

[mjonesjr]

I'm pretty sure the ohvs are 4 cylinders. Here's a pic anyways

The 4.0 OHV v6 was used in the '90-'00 Rangers. It was standard equipment in the Explorers from '91-'97.

The 4.0 SOHC v6 was used in the '99-current Rangers. It was also an option in the '97 Explorer and standard equipment in the '98+ Explorers.

 

[Otto]

Alright cool, is what I figured as the plug gap measurement on the engine panel matched up with the pushrod in the manual. Sweet now I know, thanks

Probably a dumb question and could most likely be answered with a little research but what is the difference between the pushrod ohv(over head valve? Double cams?) and the sohc. What exactly is a pushrod?

edit: Hey bob this is a Lumix mega O.I.S 6mp! 220 bucks!

 

[mjonesjr]

The OHV has 1 cam shaft with pushrods going to each cylinder head where the SOHC (Single Over Head Cam) has a cam shaft per cylinder head.

 

[Otto]

The OHV has 1 cam shaft with pushrods going to each cylinder head where the SOHC (Single Over Head Cam) has a cam shaft per cylinder head.

you mean a cam lobe per cylinder head right?

 

[mjonesjr]

you mean a cam lobe per cylinder head right?

Nope, cam shaft per cylinder head.

 

[gw33gp]

The 4.0 SOHC v6 was used in the '99-current Rangers.

I thought the 4.0L SOHC engine first showed up in the Ranger in 2001.

The 4.0L SOHC engine does have two cams (one for each cylinder head) and it does not have pushrods like the OHV engines. Without pushrods in the way it allows better port design (intake and exhaust) to provide better flow. It also simplifies the valve train but adds complexity to the cam drive.

 

[kunar]

http://auto.howstuffworks.com/camshaft1.htm

scroll down, there are illustrations of a few generic engines. pay attention to the SOHC and the pushrod engines.

 

[mjonesjr]

I thought the 4.0L SOHC engine first showed up in the Ranger in 2001

I think it was an option in the late '99, early '00 Rangers.