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SunCoast Diesel SunCoast Category 1 4R100 Transmission (No Converter) - SC-4R100-CAT1-LC

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SKU: SC-4R100-CAT1-LC

HIGH PERFORMANCE 4R100 TRANSMISSION

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(540) 587-3796

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Description

TRANSMISSION INCLUDES THE FOLLOWING:

Alto High Performance Clutch Kit
Alto High Performance Steel Module
Overhaul Kit
New Filter
New Bushing Kit
New Front Pump Bushing
Transgo Tugger Kit
New Solenoid Pack
New Heavy Duty 45 Element Sprag

The 4R Platform

The 4R100 transmission replaced the E40D transmission for the 1999 year model and was mated to the 7.3L Power Stroke diesel through the 2003 model year Ford trucks. The 4R100 proved to be a fairly reliable transmission in stock performance levels, however once power adders are introduced the transmission, becomes the weak link in the drivetrain.

This electronically controlled overdriven unit boast a first gear ratio of 2.71:1 and a second of 1.54:1, which makes it great for towing and hauling with an .71, overdrive fuel economy is also improved.

The Clutches Involved

This new 4R100 transmission includes Alto Red Eagle clutches along with Kolene steels.

Red Eagle Friction is the go-to material for most performance applications. The lining has a unique dual-saturation, which imparts high friction coefficients and high heat resistance. Red Eagle clutches are designed to limit the amount of "slip" by providing a shorter lock-up time, generating less heat.

The proprietary process starts with the friction paper saturated in a phenolic resin, cured, and then saturated a second time in a silicate. The silicate imparts high heat resistance.

Red Eagle clutches:

Are designed with a softer, more resilient base paper.
Assure less wear against opposing steel plates.
Reduce the incidence of steel plates burning and warping.

The Intermediate Sprag

The factory sprag in the 4R100 transmission unit is notorious for failing when exposed to high levels of fatigue. This could include vehicles exposed to heavy towing or hauling or just higher-than-normal torsional fatigue. These factory sprags are typically 24- or 34-element sprags. In all SunCoast builds, these are replaced with heavy duty 45 element sprags. This is an increase of up to 53% over the factory, offering unmatched performance and ensuring that premature failure does not occur.

Transgo Valve Body Calibration Kit

The valve body is the central nervous system of your transmission. Everything that transpires within the unit begins here. In our SunCoast transmissions, we exclusively use the TransGo HD2 Tugger Kit. This valve body calibration kit is perfect for exhaust braking and doubles the low clutch holding pressure in manual first gear for reliable downhill braking. You also have the ability to adjust shift firmness to your desired preferences. With the improved converter feed capacity, you benefit with better cooling and lubrication.

Corrects/Prevents/Reduces:

Codes 628, P1740, P1744
Soft shifts
2nd and 3rd burn-up
Converter burn-up
Reverse delay
No reverse hot
Converter slide/shudder
Pump buzz

Also Includes:

Pressure regulator boost valve
1-2 shift valve spring
Line regulator valve
Innovative line-to-lube components
High temp direct clutch seal
Coast clutch HD snap ring
OD housing spiral lock snap ring
Updated direct clutch outer seal
Calibration plate for firmness adjustments
Quick-fill valve
L/R mod boost valve

New Solenoid Pack

The 4R100 is equipped with a solenoid pack that controls shifting from gear to gear. This solenoid pack is comprised of electromagnetic solenoids. The integrity of these solenoids is imperative, as the flow rate and spray pattern could affect shift quality and clutch life. When failure occurs within the unit, it is not uncommon that the same particles and sediments you find in the bottom of the pan are also in the solenoids. This contamination of the solenoids can and will affect the fluid delivery to critical circuits within the unit.

In this SunCoast 4R100 transmission, kit we replace the solenoid pack with a new one to ensure consistent shifts and long clutch life.

New Bushing Kit

As with any standard rebuild, this 4R100 transmission also includes a new bushing kit, which also includes a new front pump bushing.