Sonnax

Torque Converter Technical Library

Sonnax offers a broad range of resources to help technicians stay on top of developments in the automatic transmission industry. Whether you're troubleshooting a problematic valve body or looking for rebuilding tips and tricks from the pros, you'll find no better online resource. Plus, we're always adding new content to keep you and your shop on the cutting edge, so be sure to check back often to see what's new from Sonnax.

Look up specific technical resources by Make, Unit or Subject below. Click on Article, Author or Date to sort your results.

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Article Author Date
Upgrading the Honda Impeller-To-Stator Bearing Ed Lee 02-2012
Tips for Aligning Torque Converter Clutch Linings into Covers Rick Morris 01-2012
Front Seal Blow Out After Converter Replacement Marc van Aalderen 12-2011
Salvaging the Cover on Overheated Honda Converters Ed Lee 11-2011
Nissan RE5R05A: Converter SHUDDER After a Radiator Cooler Failure Repair Gary Carne 10-2011
Overheated Honda Converters/740 Codes Ed Lee 09-2011
Retrofitting The GM 12" 350/400 Non-Lockup Ed Lee 08-2011
New Converters: Visually Inspect, Measure, Document Ed Lee 07-2011
Carbon Woven Wear Characteristics Lowell Caltrell 05-2011
Overall Height Issues and Pump Gear problems: 4L60-E, 300mm Converter, 4.2L engine, Code VJCX Ed Lee 04-2011
Walking the Thin Line Dave Roe 03-2011
Bond-Prep, Bond Enhancing Agent Sonnax 03-2011
First Aid for Stators Ed Lee 02-2011
4R/5R55E Engine Stall on Engagement After Rebuild Ed Lee 01-2011
Pooling our Resources Ed Lee 12-2010
6T70/75 Converter Pilot Issues Ed Lee 11-2010
Upgrading the Flat TCC Pistons for the 4L30-E & 4T65-E Ed Lee 10-2010
Premature Failure of Mitsubishi Galant Ring Gears Ed Lee 09-2010
Not Hard to Keep; Easy to Lose Frank Biolsi 09-2010
Mercedes 722.6: Cold Stall/TCC Shudder, Part 2 Ed Lee 06-2010
Mercedes 722.6: Cold Stall/TCC Shudder, Part 1 Ed Lee 05-2010
Rebuilding the New GM Captive Clutch without Fear Ed Lee 04-2010
4L80-E Overheating due to Negative Clearance Ed Lee 03-2010
Honda 740 Codes: Torque Converter Forensics Ed Lee 02-2010
FD-CP-1 & FD-CP-2: Friction Material Coloration Update Sonnax 01-2010
Checking for Cracks: Converter Cover and Damper inspection techniques Ed Lee 01-2010
Allison 1000 Converters: The Next Generation (#6) Ed Lee 12-2009
Orifice Control within the Converter, Part 3 Ed Lee 10-2009
Orifice Control within the Converter, Part 2 Ed Lee 09-2009
Orifice Control within the Converter, Part 1 Ed Lee 08-2009
Be Careful when Making Changes: Bonding Set Up Ed Lee 07-2009
Clutch Plates FS-CP-2 for ZF5HP19 and FS-CP-3 for ZF5HP24 Sonnax 06-2009
Modifcations to allow use of CH-N-1 thrust bearings for use in VW 096 (01M) converters Sonnax 06-2009
Cummins Diesel TCC Shudder: a new twist Ed Lee 06-2009
What IS the correct name? Part 2 Ed Lee 05-2009
What IS the correct name? Part 1 Ed Lee 04-2009
Salvage worn Ford RWD Stator Castings Sonnax 03-2009
Modifying AL-CC-1 & AL-CC-2 front covers for use in 1000/2000/2400 (2006-up) Sonnax 03-2009
Internal Clearance vs. Endplay Ed Lee 03-2009
Mystery PO741 Code Ed Lee 02-2009
TCC Apply: The Grooved Friction Material Debate Ed Lee 01-2009
Late Model GM 4L80-E Piston Bonding Issue Sonnax 12-2008
Centerline Issues: Balancing Ed Lee 12-2008
FD-WS-12 & FD-WS-31: Alignment is critical Sonnax 10-2008
Don't Blame the torque converter - Part 2 Ed Lee 10-2008
GM-N-20: enhanced replacement for GM-N-18 impeller side bearing Sonnax 09-2008
Keep your performance business Revved Up this winter Sonnax 09-2008
Don’t Blame the torque converter - Part 1 Ed Lee 09-2008
FS-O-27V Radial Lip Seal Location Sonnax 08-2008
Rebuilding the Chryseler 68RFE Torque Converter Ed Lee 08-2008
Solving the Stator Cap Wear Mystery: Surface Finish Ed Lee 07-2008
Fine-tuning the Bonding Process Ed Lee 06-2008
Whatever Turns You On: Is your TCC 'on' until oil turns it off or is it 'off' until oil turns it on? Sonnax 04-2008
Strengthening Impellers: Vanes and Weld Gaps Ed Lee 04-2008
BW-DA-3P requires modification of BW310mm (Chrysler A618) OE Turbine Hub Sonnax 04-2008
More details: when to shim Ed Lee 03-2008
It's all in the details: spring installation Ed Lee 02-2008
No Worries with the Allison 1000/2000/2400 Converter Sonnax 01-2008
Clutch Release Clearance 101 Ed Lee 01-2008
Installation of Roller Clutch Outer Race in BW-ST-1 Stator Sonnax 12-2007
Identifying those GM 300mm dampers Ed Lee 12-2007
Which generation of torque converter? Identification Tips For Allison Torque Converters Ed Lee 11-2007
Torque converter forensics: Three preventable bearing failures Ed Lee 10-2007
Cleaning a difficult area: Piston/Damper Assemblies Ed Lee 09-2007
FD-HT-41HS Turbine Hub/Late Ford 5R110W Sonnax 08-2007
Myth Busters IV: Performance Converter Modification Ed Lee 08-2007
Myth Busters III: Performance Converter Modification Ed Lee 07-2007
FD-N-6 Bearing Update Sonnax 06-2007
Myth Busters II: Performance Converter Modification Ed Lee 06-2007
Myth Busters I: Performance Converter Modification Ed Lee 05-2007
Correct bond line temperature made easy Sonnax 04-2007
Lockup surge in Allison 1000s Ed Lee 04-2007
Revisiting the captive clutch Ed Lee 03-2007
Replace those Honda stator bearings with something more readily available Ed Lee 02-2007
Converter Charge Mysteries: Impeller hub I.D. effects on flow Ed Lee 01-2007
The Proper Surface Finish for Bonding Ed Lee 12-2006
Taking Stock of Your Bonds Sonnax 11-2006
Changing Converter Designs - Change Your Approach Ed Lee 11-2006
Identifying the 722.6 converters Ed Lee 09-2006
Converter Water Contamination and Core Storage Ed Lee 08-2006
A Clutch Call: What 740/1740 Codes Reveal about Chrylser Converter Flow Ed Lee 07-2006
Converter Surgery 101: Cutting Open Converters Ed Lee 07-2006
Keeping Up with Torque: The Flanged Impeller Hub Ed Lee 07-2006
New Options for Rebuilding E4OD/4R100/5R110W Converters Mike Morin 07-2006
Rebuilders Rally to Crack the Code: Converter Identification Ed Lee 07-2006
A Different Fix for an Old Problem: Piston Bore Wear Ed Lee 07-2006
Getting Your Cores Back Ed Lee 06-2006
4R100 Flow Issues Ed Lee 05-2006
Troubleshooting TCC Issues has its Ups and Downs Sonnax 04-2006
Time to Change an Old Habit: Machining the Apply Surface Ed Lee 04-2006
Indexing TCC Piston/Damper Assemblies to Turbines Ed Lee 03-2006
Upgrading the Cummins Roller Clutch Mark Mustard 02-2006
TCC Apply Piston and Cover Deflection Ed Lee 01-2006
Centerline Issues: TCC Frictions Bonded Off Center Ed Lee 12-2005
Proper Parting Procedures, Part 2 Ed Lee 11-2005
A Primer on Proper Parting Procedures Ed Lee 10-2005
Tweaking the GM 298mm Converter Ed Lee 08-2005
Running Hot, Guzzling Fuel: Check the Damper Assembly Sonnax 04-2005
When In Doubt Retrofit Sonnax 01-2005
Demystifying the Flanged Hub Sonnax 12-2004
High Performance Converters: Stall Speed, Core Selection, and more Andy Dumas and Joe Allen 01-2004
Stall Speed Chart Sonnax 01-2004
High Performance Converters: Stall Speed, Stator Clutch Options, and more Frank Biolsi and Jeff Brown 01-2002

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