Timing system changes

[SHOdded]

Not technically a technical article, but needs to be documented.  Will be updated as research is ongoing

2010+ Taurus SHO Primary Timing Chain

Production Date: 02/2011-
Ford Part No.: AT4Z-6268-B
Belt - Timing Primary

Replaced By AT4Z-6268-C

=============

Production Date: 06/2009-02/2011
Ford Part No.: 7T4Z-6268-A
Chain - Timing Primary

=============

Production Date: 06/2009-
Ford Part No.: 7T4Z-6268-CA
Chain - Timing Secondary

Require Quantity 2
Package Quantity 1

===============
Camshaft Position Sensor aka Phaser

Passenger Side
Production Date: 08/2010-
Ford Part No.: BA5Z-6A257-C
Sensor - Camshaft Position Intake , RH

Replaced By BA5Z-6A257-E

Driver Side
Production Date: 08/2010-
Ford Part No.: BA5Z-6A257-D
Sensor - Camshaft Position Intake , LH

================

Driver Side
Production Date: 06/2009-05/2010
Ford Part No.: 7T4Z-6A257-A
Sprocket - Camshaft
Replaced By 7T4Z-6A257-B

Passenger Side
Production Date: 06/2009-05/2010
Ford Part No.: 8T4Z-6A257-A
Sensor - Camshaft Position
Replaced By 8T4Z-6A257-B

Why the gap in the phaser part info, no idea.

 

[SHOdded]

Differences between the timing systems as a result of the updates are listed in the attached PDF downloaded (along with images) from the following site:
https://www.fordflex.net/forums/viewtopic.php?t=16661

1st generation chain:

2nd generation chain:

Pics from the referenced article comparing old Gen 1 to new Gen 2 primary timing chain:

 

[SHOdded]

While the chain design is somewhat different, is based on principles similar to the Bosch HY-VO chain product, purported to be quieter and more efficient.  Reliability stats are not yet available.

https://www.borgwarner.com/newsroom/press-releases/2017/02/22/borgwarners-hy-vo-chains-transfer-torque-for-the-chevrolet-volt-and-malibu-hybrid
http://www.car-engineer.com/hy-vo-chain-drives-transfer-cases-toyota-lexus/

 

[ZSHO]

Hmm Interesting.. Thanks for the update. Z  :thumb:

 

[FoMoCoSHO]

Hmmm...

I can tell you this, since we had the entire timing set done on the Lincoln, KR is a rarity. I would have thought my sensor was broken if it wasn't happily adding.

For the 1st couple of months after we got it back, never saw more than .09. Yes, that is correct. Two months in I finally got a +3 on an extended logging/hunting session.

Now i have to look and see if i got the updated parts.

 

[J-Will]

"Timing system" is right that's a lot of parts that need replaced

Sent from my Pixel 2 XL using Tapatalk

 

[SHOdded]

You would be surprised how hard a time I have convincing people of that, LOL.  Unfortunately, there are a LOT of moving parts to this system, and if just one goes wrong, it casts doubt on the rest of them.