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Old 04-14-2014
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What motor will fit

My truck has recently hit 150k miles and it sounds like i have timing chain issue. I talked to my family member/mechanic and he said it would be easier to just buy a new motor than try and replace all the chains. What motors are interchangeable with my 2001 4.0 4x4? looking for just a drop in swap but what are the differences. I may have one available out of a 1999 explorer but the intake looks different.

thanks!
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Old 04-14-2014
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If you want to just swap engines, it would be easiest to just find a 4.0 sohc ranger engine from a 01+. Thats what I would look for. Good luck
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Old 04-14-2014
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Yes the early 4.0l SOHC had that problem, 2001 was the first year for Rangers and the 4.0l SOHC.

In either case, a swap or a rebuild, you have to pull out and then reinstall the engine, so that labor/cost is set.

New timing chain kits have better parts so replacing timing chains and guides would be more cost effective.

Used engine is a mystery, could be good, or you could be buying someone elses problem.
You for sure don't want a used 4.0l SOHC older than 2003, or you are just buying the same problem you have now.

A 4.0l SOHC is rated at 207 horse power
A 5.0l V8 is rated at 215HP

So that swap not really worth the effort IMO

Quote:
TSB 02-7-6 4.0L SOHC Timing Chain Rattle

*Engine - 4.0L SOHC - Rattle noise from primary chain drive area between 2K-3K RPM - Cold engine operation only

*Noise - Rattle noise from primary timing chain drive area between 2K-3K RPM - Cold engine operation only - vehicles equipped with 4.0L SOHC Engine only

Ford: 99-02 Explorer, 01-02 Sport Trac, Explorer Sport, Ranger
Mercury: 99-02 Mountaineer

Issue:

Some vehicles equipped with the 4.0 SOHC (Single Over-Head Cam) engine may exhibit a Primary Timing Chain rattle noise. The noise is audible during hot and cold engine operation (but predominantly found on cold engines) under acceleration, typically at 2400-2500 rpm. To confirm presence of this noise, accelerate in 2nd gear between 2000-3000 rpm and listen for rattle noise that sounds similar to spark knock. This may be caused by the Primary Timing Chain Tensioner system.

Action:

Replace the Primary Timing Chain Tensioner, Chain Guide, Jackshaft, and Crankshaft Sprockets with a Primary Timing Chain Tensioner Kit. The kit includes an improved Primary Chain Tensioner, as well as updated Primary Chain Guide, Jackshaft, and Crankshaft Sprockets. Required fastners, primary timing chain, and front cover gaskets are also included. Refer to the following Service Procedure for details.

Service Procedure:

Verify the condition. Obtain the correct kit and follow the sheet supplied with the kit.

Use kit 2U3Z-6D256-AA (balance shaft engines) for:
-99-01 4x4 Explorer/Mountaineer
-01-02 4x4 Sport/Sport Trac
-All 02 Explorer/Mountaineer, except engine codes 2G-960-AA and 2G-964-AA

Use kit 2U3Z-6D256-BA (non blance shaft engines) for:
-99-01 4x2 Explorer/Mountaineer
-01-02 4x2 Sport/Sport Trac
-02 Explorer/Mountaineer with engine codes 2G-960-AA and 2G-964-AA
-All 2001-02 Ranger

Labor Time: Estimated around 6 hours

Warranty Status: Elgible under the provisions of Bumper to Bumper warranty coverage

Last edited by RonD; 04-14-2014 at 11:35 AM.
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Old 04-14-2014
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Quote:
Originally Posted by RonD View Post
Yes the early 4.0l SOHC had that problem, 2001 was the first year for Rangers and the 4.0l SOHC.

In either case, a swap or a rebuild, you have to pull out the engine, so that labor/cost is set.

New timing chain kits have better parts so replacing timing chains and guides would be more cost effective.

Used engine is a mystery, could be good, or you could be buying someone elses problem.

A 4.0l SOHC is rated at 207 horse power
A 5.0l is rated at 215HP

So that swap not really worth the effort IMO
Those are valid points. Thanks guys! Does my motor have a balance shaft?

Last edited by Ranger4.0XLT; 04-14-2014 at 11:36 AM.
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