RE5R05A popularity increases

RE5R05A’s popularity increases among rebuilders

Figure 1

Figure 1
Figure 2

Figure 2
Figure 3

Figure 3
Figure 4

Figure 4
Figure 5

Figure 5

The RE5R05A is becoming a popular torque converter for most rebuilders. This unit is similar in several ways to that of the Nissan family cars and SUVs. Dacco part number DA-57 is used in the Infiniti Q45 and the DA-65 is used in the Nissan Armada and Titan SUV-type vehicles. The transmission has some of its own shortcomings, but we will deal with the torque converter issues only.

Both the DA-65 Nissan and the DA-57 Infiniti are near identical in design and feature a multidisk clutch (Figure 1) with a transmission-type clutch pack. The Infiniti converter has 2 friction plates as shown in Figure 2 and alternates with 4 steel plates and a top pressure plate. The Nissan has three friction plates to handle the torque and GVW of the heavier SUV. The Infiniti could benefit from using an extra friction plate considering they are always prematurely worn out. You can see in Figure 3 that the bearing design has also changed, which should be upgraded to the later design Chrysler bearing like the CH-N-1 Sonnax piece. This is a popular choice for a lot of converter upgrades and requires very little machining modification to adapt it.

The RE5R05A also has 2 different stall impellers. Never interchange impellers. The stall is quite noticeable and performance and driveability are unacceptable. Also turbine/ damper design, seen in Figure 4 and Figure 5, are interchangeable but damper spring rates differ. Again it is recommended not to mix or interchange dampers. Clutch apply or feel may be undesirable.

Dennis Sneath
Midwest Converters
Rockford, Illinois

– Found in December 2007 Newsletter