Sonnax releases boost valve kits for Toyota transmissions
Sonnax has released new drop-in C1 and C4 apply boost valve kits (part numbers 168740-01K and #168740-02K, respectively) for Toyota’s UA80E, UA80F, UB80E and UB80F transmissions. The sleeves in these kits are manufactured from wear-resistant billet aluminum. Sonnax says these kits can prevent wear and restore proper hydraulic control in these Toyota/Lexus transmissions.
Sonnax releases splined stub and sleeve kits for performance vehicles
Sonnax highlights its new aluminum splined stub and sleeve kit, which the company says can reliably drive power from the engine and transmission to the differential in modern muscle cars and custom street rod/hot rod vehicles. These kits make it easy to build, balance and service a rugged performance driveshaft for non-slip-yoke applications, since the
Sonnax introduces low/reverse sprag rebuild kit for Chrysler 68RFE
Sonnax highlights its low/reverse sprag rebuild kit for Chrysler 68RFE transmissions. The company says this kit (part no. 72642SK) allows replacement of the end caps, low/reverse sprag elements and retainer plates without needing to buy a full sprag assembly.
Diagnosing AS68RC intermittent pressure switch/linear solenoid performance codes
Intermittent pressure switch codes on vehicles with the Aisin Seiki AS68RC transmission have been very difficult to nail down to one specific cause. The two most common pressure switch codes for this transmission are P0746 clutch pressure control solenoid A or linear solenoid A performance or “Stuck Off,” which also includes pressure switch 1 mechanical
Rostra offers variable bleed solenoids for second generation Ford 6F35
Rostra announced that it offers 10 NH/NL variable bleed solenoids for bands 1–5 for the Ford 6F35 transmission (second generation). Touting an improved design, Rostra says that these solenoids can achieve improved sensitivity, reduced hysteresis over the OE design and highly accurate pressure control in the 6F35.
Chrysler ZF8 generations 1 and 2 identification guide
In 2019, some Chrysler/Ram/Jeep applications that utilize the ZF8HP transmission moved to a second-generation unit with a new designation and numerous changes for better performance and durability. Gen. 1 units are classified as 8HP45, 8HP70 and 8HP90; while Gen. 2 are classified as 8HP50, 8HP75 and 8HP95. Internally, the Gen. 2 transmission had numerous hard
Sonnax highlights clutch backing plate for ZF transmissions
Sonnax highlights its heavy duty “D” clutch backing plate (part no. 35570-75) for ZF8HP55, ZF8HP70 and ZF8HP75 transmissions. According to Sonnax, this plate can help prevent flexing of the clutch pack in these transmissions. The plate is twice as thick as its OEM counterpart for significantly improved protection against burn-up, Sonnax says.
Sonnax introduces S4 clutch control valve kit
Sonnax has introduced a new drop-in S4 clutch control valve kit for GM 8L45 and 8L90 transmissions. Sonnax says users can replace worn parts with this kit (part no. 154740-24K) to restore proper hydraulic control and renew clutch apply fluid pressure performance. The company notes that the Sonnax valve in this kit cannot be used
Sonnax introduces remanufactured TEHCMs for 6L80/90
Sonnax has introduced a new line of remanufactured TEHCMs for GM 6L80 and 6L90 transmissions. Each unit is fully electro-hydraulically tested to comply with OE performance and VIN-blanked for easy programming to any applicable vehicle, the company says. Coverage includes the following:
GM 6L series no-movement conditions: Analysis and repair tips
I am certain that many have experienced a no-movement forward, no-reverse or abnormal pressure condition with a GM 6L series transmission, especially since they are one of the most popular unit families in shops today. So, let’s examine some conditions and causes along with a few diagnostic tips for troubleshooting. We’ll go through a few
Sonnax adds new clutch regulator valve kit for Ford 6F35
Sonnax has introduced a new oversized low reverse/overdrive (4-5-6) clutch regulator valve kit (part no. 144740-43K) for Ford 6F35 transmissions, generations 1 and 2. Sonnax says that users can restore the correct valve/bore clearances and clutch control in these transmissions by reconditioning the bore and installing this kit. This kit includes a new spring that
Sonnax adds new stator support bushing for Ford 6F35
Sonnax has released a new stator support bushing (part no. 144036B) for Ford 6F35 transmissions, generations 1 and 2. Sonnax says that users can eliminate spinning and premature deterioration and restore critical clearances in these transmissions by machining the bore and installing this bushing.
