Timing Guides

[mgknarf]

Hi I'm new to the forum. I have a 2004 Explorer and the timing cassettes broke. I took the engine out and have a question? is the 4.0 SOHC a interference engine?

 

[imp]

Hi I'm new to the forum. I have a 2004 Explorer and the timing cassettes broke. I took the engine out and have a question? is the 4.0 SOHC a interference engine?

Most are saying NON-INTEFERENCE> I ain't sure...............

"Fortunately, the 4.0L SOHC is not an interference engine so a timing chain failure won’t bend the valves."

Exploring the Service Needs of the Ford 4.0L V6 Engine

At a rather anemic 210 horsepower, the 4.0L SOHC V6 is not exactly a high output engine. It also has an unusual overhead cam drive setup.

www.underhoodservice.com

.

 

[mgknarf]

Most are saying NON-INTEFERENCE> I ain't sure...............

"Fortunately, the 4.0L SOHC is not an interference engine so a timing chain failure won’t bend the valves."

Exploring the Service Needs of the Ford 4.0L V6 Engine

At a rather anemic 210 horsepower, the 4.0L SOHC V6 is not exactly a high output engine. It also has an unusual overhead cam drive setup.

www.underhoodservice.com

.

ok thats good news thanks

 

[swshawaii]

4.0L SOHC is DEFINITELY an interference engine. Proof is @2000StreetRod pictures. (Post#3)

Is 4.0L SOHC V6 an Non-Interference Engine?

I have a 2002 4.0L SOHC V6 that quit while going down the interstate. It still turns over but sounds like the timing is off so it wont re-start. Many say that this engine is an interference engine and when the timing jumps it bends some valves. I know a compression check can determine if there...

www.explorerforum.com

 

[drdoom]

Interference engine.

 

[Number4]

Interference. The older pushrod 4.0 may not have been.

 

[Littleant]

DEFINITELY an interference engine

 

[drew87]

Most are saying NON-INTEFERENCE> I ain't sure...............

"Fortunately, the 4.0L SOHC is not an interference engine so a timing chain failure won’t bend the valves."

Exploring the Service Needs of the Ford 4.0L V6 Engine

At a rather anemic 210 horsepower, the 4.0L SOHC V6 is not exactly a high output engine. It also has an unusual overhead cam drive setup.

www.underhoodservice.com

.

That's good news, mine blew apart too. The truck got me home, it was making a rattleing noise. Never got a check engine light, or power loss. Didn't even hear it till I was beside a truck. So I'm pretty sure it didn't jump timing. I took off the valve cover and found that the tensioner was pushing against what was left of the cassette. I found a guy who said he would do all 4 chains for $600. Before he picks up the truck, is there anything I should look for to make sure the engine is still good? I really don't wanna pull the heads, unless I have too.

 

[Fix4Dirt]

That's good news, mine blew apart too. The truck got me home, it was making a rattleing noise. Never got a check engine light, or power loss. Didn't even hear it till I was beside a truck. So I'm pretty sure it didn't jump timing. I took off the valve cover and found that the tensioner was pushing against what was left of the cassette. I found a guy who said he would do all 4 chains for $600. Before he picks up the truck, is there anything I should look for to make sure the engine is still good? I really don't wanna pull the heads, unless I have too.

imo thats the only way to know definitively. and no that article imp tagged is WRONG! these are interference motors and @410Fortune and @2000StreetRod iirc have pictures to prove it!

i think you could put a borescope through the spark plug hole too to see if there is piston damage