Sonnax introduces Ford 6R140 converter limit valve kit
Sonnax has introduced a new drop-in converter limit valve kit for Ford 2011 and later 6R140 transmissions. Sonnax says this kit can help users recover hydraulic control and renew TCC performance in these transmissions. This kit (part no. 126740-25K) features a drop-in sleeve/valve assembly to compensate for wear and excess clearance, including in worn bores.
Sonnax releases Subaru TR580 boost valve kit
Sonnax has released a new drop-in TCC boost valve kit for Subaru TR580 transmissions. Sonnax says users can restore hydraulic integrity to the TCC circuit with tightly controlled tolerances in these transmissions by installing this kit (part no. 823740-12K). This kit includes a steel valve that combats premature wear and wear-resistant sleeves, the company says.
Tips for success with the GM transmission fast learn process
This article is about failure, something we all experience from time to time. If you are attempting to perform a fast learn process on a GM eight-, nine-, or 10-speed transmission, you may have that temporary feeling of failure, as this process can bring on frustration quickly. Let’s talk about what the fast learn process
Integration becomes synergy for Sonnax and Rostra
Klynt Baker, the recently appointed president of Sonnax and Rostra, says that his responsibilities aren’t two aftermarket companies owned by Marmon Holdings. Baker says that Sonnax and Rostra have integrated their operations to the point that there are indeed two brands encompassed in a single business. The Marmon Automotive Aftermarket Group is a subsidiary of
Sonnax releases GM 6L80, 6L90 low/reverse sprag rebuild kits
Sonnax introduced a new low/reverse sprag rebuild kit for GM 6L80 and 6L90 transmissions. The company says users can use this kit to replace the element, retainer plate, end caps and snap ring in these transmissions without buying an entire sprag assembly.
Sonnax highlights intermediate clutch backing plates for GM transmissions
Sonnax highlights its heavy-duty intermediate clutch backing plates for GM 4L80-E, 4L85-E and TH400 transmissions. Both backing plates are compatible with OE and aftermarket cases, the company says. Plates available include:
Sonnax highlights center support snap ring for Ford 6R series
Sonnax highlights its new center support snap ring for Ford 6R60, 6R75 and 6R80 transmissions. The company says this part (part no. 95630-01) can restore proper endplay, save the center support and prevent future wear in these transmissions.
Troubleshooting RFE overdrive clutch failure: Three key areas to check
Fighting overdrive failure in Chrysler RFE transmissions can be a frustrating task. You build the unit, and a week later, it’s back with the overdrive clutches burned up again. It happens with every one of them, from the 45RFE, 545RFE and 65RFE to the 66RFE and 68RFE. You have replaced the valve body and double-checked
Sonnax appoints new company president
Sonnax Transmission Co. announced that vice president of operations Klynt Baker has been promoted to president. Baker joined Sonnax in 2018 to oversee manufacturing, engineering, quality, safety, facilities, maintenance, packaging automation and LEAN initiatives at the company’s Vermont and North Carolina locations. He succeeds outgoing president Steve Boyer. Sonnax says that Baker’s leadership and expertise
The 6R140 torque converter: Common fault codes and how to rebuild
There are many reasons for converter clutch slip codes to occur in vehicles equipped with the Ford 6R140 transmission. One is bore wear in the valve body with any one of the three valves related to converter clutch apply and release. Low line pressure could be another. But there is a third that is inherent
Sonnax unveils valve kits for ten-speed Ford, GM transmissions
Sonnax highlights its valve kits for Ford and GM ten-speed transmissions. The first of these is a line of oversized main pressure regulator valve kits #105740-20K (pictured above) for GM 10L60/80/90 (Gen. 1) and Ford 10R60/80/90/140 transmissions and #105740-21K for GM 10L60/80/90 (Gen. 2) transmissions. The company says these kits can recover hydraulic control and
Diagnostic tips for the Ford 6F35
We have all experienced repairs that seem to “go down the rabbit hole,” as we call it. Our subject today is one such issue: a Ford 6F35 transmission with codes P073D or P177F after repair and a complaint of trying to go into Reverse while in Neutral, or a bind in Forward when cold. This
