The new Ford 6R140 Torqshift transmission is the most robust transmission Ford has yet to build. This unit was designed and manufactured exclusively by Ford Motor Company. First and foremost, Ford opted to incorporate a robust one-piece bell housing design for the all new 6R140 Torqshift transmission. This new one piece design is not only tough but adds a tremendous amount of rigidity to the case making torsional flex an afterthought. The transmission features a very deep first gear (great for towing and moving mountains) with double overdrive (excellent for fuel economy). This unit has a total of six forward gears with the ratios as follows: 1st gear 3.974:1, 2nd gear 2.318:1, 3rd gear 1.516:1, 4th gear 1.149:1, 5th gear 0.858:1, 6th gear 0.674:1.
For maximum efficiency, the patented Lepelletier geartrain reduces complexities that exist in connecting an automatic transmission's gear sets and clutches. Simply put, the 6R140 uses a simple gearset to drive a Ravigneaux gearset. So the transmission uses just five clutch sets to achieve six forward gears. The 6R140 is further strengthened by the utilization of a powder-metal carrier within the compound Ravigneaux planetary gearset (a double planetary gearset). The carrier is made up of four pressed components, which are sinter-brazed together to form a rigid, dense structure.
The new torque converter in the 6R140 features an exclusive long travel, ultra high capacity turbine damper designed to soften the extreme force produced by the new 6.7 L PowerStroke. Here at SunCoast we have already improved upon this converter, launching our own line of Torque converters including a variety of stall speeds.
From failure to success, a friction story.
SunCoast not only has improved the friction material in this clutch but dressed some common downfalls within this unit. By addressing these we have increased clutch capacity in some very specify areas.
The intermediate power pack is upgraded with 15% improvement in friction surface area. The factory set-up uses 6 clutches and 6
steels. We have upgraded this clutch pack to 7 high performance G3 clutches and 7 steels.
The direct clutch power pack is addressed next. We have increased this power packs friction surface are by 20%. This new high performance power pack increases clutch count to 6 G3 friction and and 6 custom cut machined steels. This added clutch capacity along with the improvement in friction material dramatically improve the longevity of this clutch pack.
The overdrive clutch pack is addressed as well. This particular power pack is usually the first to go. It is the smallest clutch within the transmission while having least amount of torque multiplication assistance. The factory utilizes 7 frictions and 7 steels in this clutch pack. We have increased this to 9 clutches and 9 steels boasting an additional 24% friction surface area. The overdrive piston has also been replaced with a newly machined one.
The Patent and the Dampener
The 6R140 E clutch hub is designed without any dampener. This makes perfect sense due to the fact that Ford designed the 6R140 Torqshift transmission with the thought process that there would be torque management. With torque management in place we are defueling during shifts essentially pulling the power between shifts. Ford has also designed this with a certain torque limit in mind that most certainly did not have deletes, larger chargers, and aftermarket tuners involved. Couple this along with the removal of torque management and you have created a situation where failure is imminent.
SunCoast has designed a completely new 4-5-6 clutch hub that incorporates a damper assembly that also uses a Sound Reduction/Absorption Technology that eliminates the dreaded squawk and restores shift quality. This new clutch hub damper allows for clean, crisp, and silent gear exchange. This allows us to use much more sophisticated friction materials with higher friction coefficients ensuring longevity and reliability.This new Patented SunCoast E Clutch Hub Damper has seen over 1,000hp reliably. It is only available at SunCoast.
SunCoast has also developed a new 4-5-6 "E" clutch power pack using nine of our custom frictions. This new proprietary SunCoast clutch pack is exclusively designed for our patented clutch hub. This custom SunCoast set-up provides a very clean and crisp shift. The extra capacity in the clutch pack along with the higher friction coefficient provides unmatched performance that cannot be matched by anything else on the planet.
This new clutch kit is ideal for individuals that are looking for increased durability over the factory clutches. Whether towing heavy loads or playing at the dragstrip on the weekends this clutch kit can suite your needs.
The Sure Cure
The Sonnax Zip Kit targets the root cause of multiple complaints by sealing critical circuit pressure losses in Ford 6R140 valve bodies. The kit contains specifically designed components to prevent the loss of pressure in a variety of circuits. These circuits include main line, solenoid regulator,reverse, clutch control, tic and solenoid apply circuits with no specials tools or reamers required.
This Zip Kit guide provides clear and easy instructions to get your unit back on the road quickly and reliably. In addition to including general rebuilding tips and technical information, the technical booklet included in this kit contains vacuum testing and additional repair options for higher mileage units or for repairing specific complaints.
This kit also includes a new SunCoast custom overhaul kit and a new filter.
The new 6R140 from from Ford is definitely one of the most exciting drivetrains on the market today. The new 6R140 was released to replaced the previous Torqshift unit, which was the 5R110. The 5R110 was previously used in both the 6.0 and 6.4 Ford diesel engines. When Ford released the 6.7 L Powerstroke powerplant it also released the new much stronger 6R140 Torqshift transmission.