Sun Coast SC-10R140-CAT2D Category 2 Transmission

XDP offers the Sun Coast SC-10R140-CAT2D Category 2 Transmission that will replace the factory 10R140 in your Ford truck.

The Expanded Capacity Clutch Modules
The 10R140, while a very capable transmission, has its flaws just like anything else when it is asked to perform outside its original design intention. Since its 2018 debut, Suncoast has been actively involved in researching and development of this platform. With Sun Coast's active partnership with Raybestos powertrain, they can deliver one of the best products to date with the 10R140 platform. These Suncoast 10R140 transmissions expanded capacity clutch modules that are included to improve longevity and performance.

If the 10R140 transmission had an evil twin redheaded stepchild, the "E" clutch would definitely be one of them. This other known thorn in your side would be the "F" clutch.

The "E" Clutch
The "E" clutch in a 10R140 transmission is engaged in 1,3,5,6,7,8, and 9th gear. The real issue becomes apparent pretty quickly as this clutch is cycled on 3 times and off 2 times by the time you go into 5th gear. The clutch is on in 1st then cycled off in 2nd, cycled back on in 3rd, then back off in 4th, and then is cycled back on in 5th gear. In higher-horsepower or higher-demand towing and hauling situations, this continuous cycling on and off can lead to premature failure.

Suncoast has addressed this issue with the 10R140 transmission by improving the clutch friction properties with the New Raybestos GPZ material and improving clutch capacity by a massive 20%. This takes the clutch stack-up from a stock 5-clutch stack-up to a 6-clutch stack-up. Sun Coast simultaneously addressed the heat issue with both improved friction coefficient, as well as increasing surface area. This Sun Coast 10R140 "E" high capacity comes completely assembled and stacked up with a new (not used) OE machined drum, piston, and backing plate.

The "F" Clutch
This clutch is also susceptible to premature wear as Sun Coast has seen with other Lepelletier Ravigneaux Gear sets. Oncoming clutches in higher gears seem to take the brunt of the beating and with the 10R140 transmission, the "F" clutch is no exception.

The "F" clutch is engaged in R,4,5,6,7,8, and 9th gears and the quickest path to early or premature degradation to this clutch pack is wide open throttle or heavy-load 3rd to 4th gear shifts. This is especially prominent in applications where torque management has been removed. Suncoast has corrected this issue by adding 25% more clutch capacity to this pack by taking it from 4 clutches to 5 in this clutch pack.

Main Pressure Regulator Valve Kit
Wear in the main pressure regulator bore and on the outboard spool area of the regulator valve is common in 10-speed transmissions. This wear reduces line pressure control resulting in delayed shift engagement, poor shift quality, and burnt clutches. Wear at the inboard spool and bore can lead to converter apply problems.

Installing the drop-in Sonnax main pressure regulator valve kit 105740-12K stops the leakage of line pressure signal oil to exhaust with the incorporation of an extended front valve spool. This valve spool is 270% longer than the factory spool, so actuates in unworn areas of the bore. The O-ringed end plug provides a positive seal and stops critical signal fluid from leaking into the exhaust. Both of these Sonnax features ensure your units will have accurate line pressure control through all drive ranges. Every Suncoast 10R140 transmission gets this modification to the 10R140 Valve Body.

Features:

• Drop-in Zip Valve Parts Are Installed Quickly & Easily
• Hardcoat Anodized Aluminum Valve Combats Premature Wear
• Extended Outboard Spool Is 270% Longer Than OE & Actuates In Unworn Areas Of The Bore
• O-Ringed End Plug Provides Positive Seal To Prevent Critical Signal Fluid From Leaking To Exhaust

Solenoid Stabilization Clip Insert
In the Ford 10-speed transmissions, the heavy linear force solenoids (LFS) are held in place by small spring retainers. These spring retainers are liable to collapse, allowing the solenoid to wobble and become off-center with the inboard valve and damage the casting at the clutch valve bore opening. These LFSs actuate by expanding a small pintle about .090" to stroke the inboard clutch control valve. When the spring retainer collapses and allows the LFS to be off-center, the pintle cannot reach the clutch control valve properly, compromising the component apply timing and pressure, resulting in shift complaints and converter issues. Valve body damage can also occur if the LFSs remain loose, resulting in valve damage when rebuilt.

Sonnax solenoid stabilization clip insert 105740-01K can be used in conjunction with factory spring retainers to secure the solenoids back in place. These solid steel clip inserts force the OE spring retainers to entirely fill the casting and solenoid groove gap and prevent the retainers from collapsing in the future. If the spring retainer has already collapsed, the clip insert can be used to reform the retainer to its original size. Simply place it inside the retainer to expand it to appropriate retention specifications. Every Suncoast 10R140 transmission gets this modification to the factory 10R140 Valve Body

Features:

• Reshapes Collapsed Spring Retainers
• Prevents Future Spring Retainer Collapse
• Drop-in Zip Valve Parts Install Quickly & Easily
• Positive Stop Retainer Feature To Prevent Collapse
• 32% More Casting-To-Solenoid Surface Area For Better Support & Leverage