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Torque Converter Rebuilders Association
December 2007Issue 3, Volume 6
PLATINUM SPONSORS: Monthly publication of TCRA newsletter provided by Melissa Hall of Melyns Print & Pro.
TransmissionCertified
Taking A Closer Look...RE5R05A
Overall Height5.250”
Internal Clearance
.010” to .020”
Application:2002/2005 Infinity
Degree of rebuild difficulty:
Ink Code:P2
Largest area of concern:
6
Roller bearing and clutch liner wear
Dacco Part Number
Pilot Size
DA-57
.785”
Clutch Clearance
.055” to .080”
The RE5R05A is becoming a popu-lar torque converter for most re-
builders. This unit is similar in sever-al 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 Ar-mada 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 de-sign 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 upgrad-ed 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 im-pellers. Never interchange impellers. The stall is quite noticeable and performance
and driveability are unac-ceptable. Also turbine/ damper design, seen in Fig-ure 4 and Figure 5, are in-terchangeable but damper spring rates differ. Again it is recommended not to mix or interchange dampers. Clutch apply or feel may be undesirable.
Dennis SneathMidwest Converters
Rockford, Illinois
RE5R05A’s popularity increases among rebuilders
Figure 1
Figure 2
Figure 4
Figure 5 Figure 3
REWARD:$50.00 US for TO-2 High Stall
Contact: Robert Shaw @ 706-216-6569Shaw Automotive & Core Supply
2008 Seminar in the making
MARK YOUR CALENDAR!Next year’s annual TCRA Seminar is already on schedule to be another success. Certified Transmission, located in Omaha, Nebraska, has already agreed to host next year’s meeting and facility tour. May 16th and May 17th, 2008, will be packed with new informational seminars, in-fluential industry speakers and good
ol’ fun. Look here for updates.
Torque Converter Rebuilders AssociationPO Box 2546Reno, Nevada 89505
Questions or comments? Con-tact the TCRA newsletter by e-mail at [email protected], visit the web www.tcraonline.com or contact Dennis Sneath, board member and newsletter committee team lead.
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Contact InformationJoe Rivera .......................President
Ed Lee ..................... Vice [email protected]
Dick Lewis [email protected]
Chris Mann [email protected]
Steve [email protected]
Mark [email protected]
Dennis [email protected]
phone/fax .... (802) 885-2292
TCRA thanks all gold and platinum sponsors!
Gold Sponsors:
Timing marks were added to the side of the cover, next to the ring
gear, of the early TF8 converters to make it possible to time the engine when the harmonic balancer is not vis-ible (Fig. 1). The timing marks were mainly found in vans. Since a number of the 12 passenger vans are still in use today servicing churches and se-nior citizen facilities, it may be helpful to know how to service one. The O of the timing marks are located 21.6 de-grees to the left of the bolt hole that is opposite of the offset bolt hole. Fig. 2 Using the degree method of locat-ing the timing mark will work on both the 11 “and 12 “converters. The 727 transmission with the hole in the top of the bellhousing was used with the converters with the timing marks.
Ed LeeSonnax Industries
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Tech Tip
Explanation of TF8 timing marks
Figure 1
Figure 2
Cottingham Engineering is a British based precision engineer-ing company. We have now been the Engineering division of Mid-land Automatic Transmissions for over 4 years. A decision was taken at the beginning of 2005 to rebuild converters “in house.” The equipment was purchased, and we have been on a steep learning curve since then. We now rebuild around 60 torque con-verters per week. Initially our work was for Midland Automatics workshop but in the two years our customer base has increased to include a major car manufacturer and also a major European transmission rebuilder.
Although our staff has many years of experience in precision engineering, our quest for knowledge in the torque con-verter industry is essential. We feel with help from the TCRA we can increase the range and quantity of converters we re-build.
Phil Cottingham
