The billet covers are almost 1/4 inch thicker in the clutch surface area than the OE cover as shown in figure 3. For those who may not know, the 6L90-E is based on a very old and outdated platform of 6-Speed Torque Converter style RWD transmissions that were notorious. The best way to resolve this problem is to replace the OE covers with a steel billet cover from the aftermarket parts distributors. This problem will even be worse if the cover is machined flat by removing an already thin cover. 8L90 Torque Converters Circle D Yank Precision Camaro SS C7 Corvette Grand Sport Z06 ZR1 CTS V stall speeds 3000 to 4000rpm, best price at WEAPON-X. When using a dial indicator and rotating the cover each pad area goes back to.
This is evident on the few covers that have not been destroyed by the metal to metal contact.įigure 2 shows an OE cover mounted on a flat surface of a converter balancer and the pads marked 1, 2, 3. This causes the clutch surface to no longer be flat, resulting in a leak between the piston and cover during lock-up. Since the cover has the large mounting pads welded to it, it resists shrinking in the pad areas, but shrinks between the pads. When a converter is welded together, it has a tendency to shrink during the cool down process. The OE cover on this converter has three large mounting pads welded to the cover to prevent cover cracking and flexing under load. One other problem with this converter is the design of the front cover that the lock-up piston clamps to during lock-up. Regular price Sale price From 2,099.00 USD. Allowing converter to slip on 6L80/90 at cruise Ive been looking over the torque converter clutch tables for the 6L80 on my factory tune and noticed that it is setup to slip pretty much all the time.
6l90 torque converter pro#
There is the broken or leaking rivets that hold the damper assembly to the piston, and the worn valves in the valve body and pump causing the converter clutch to slip. Circle D GM 252MM PRO SERIES 6L80/6L90 TORQUE CONVERTER (Select Options). It was recommended to me to go with the CTS-V/ZL1 converter for the 6L90E. Several of these problems have already been discussed in previous issues of GEARS. I need my torque converter replaced on my 2011 4wd 5.3l Silverado with a 6L80E. Most of these problems have been related to the converter clutch lining wearing away until the clutch is metal to metal on the cover of the converter (Figure 1), causing metal contamination through out the transmission and cooler system.
There have been problems with the converter, along with problems in the transmission causing problems in the converter. No core charge if the unit is R&R but you will have to ship it out with our pre-paid shipping label.The 6L80/90 converters have had numerous problems since they came out in the mid 2000’s. Recon GM10405-S1 Billet is usually R&R only, call or email us for a shipping label and we will have your old unit sent out to be rebuilt. PRICE INCLUDES A $150 REFUNDABLE CORE CHARGE!
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