I have a 16 with the standard stalls in rev when cold problem…so it needs a torque converter r/r. The problem is I can’t find one thats states it has the updated internals. I’m not buying some trashy rebuilt one only to have it do it again…the lock up piston is a proven problem so a rebuilt, aka cleaned, one is basically useless. There’s shops that will split yours and rebuild them but haven’t found one yet.
So basically I was curious what people are doing with torque converter replacement. And recommendations??
I mean, every TC shop that I have worked with over the years splits them, rebuilds the clutch inside, inspects the vanes, etc. There are likely better options and worse options on the local level. Some of the national shops, like ATS, have a good reputation in the diesel world, though like anything you'll find someone who has had a problem. I've used Hughes a number of times over the past 20+ years, in everything from big block trucks to stroker small blocks., and have been happy with their performance (especially in regards to early overdrive Chrysler applications).
Are you running big tires or power adders? I know the Nag1 TC is prone to shudder, though I think it's most often attributed to people running large tires with improperly geared axles, causing excessive torque input, which accelerates wears on the lock up clutch. I don't know much about the Nag1 or how people tend to program them, but IIRC they're a "constant slip" design (like the 68RFE) but should only have ~10 RPM of slippage in normal use, and ~20-50 rpm when managing torque (at least what I recall from seeing people talk about them on the Hemi swap pages... the Jeep programmed Nag1 could be totally different for all I know!).
If yours has failed prematurely, I would take a step back and see if any other variable has contributed to that (e.g. you're running 40's on factory 3.73's lol). It it has served you well and has simply failed due to age/service life, I would probably go with an OEM Mopar unit if available. If not, it may be time to consider an "upgrade". The folks at both ATS and Hughes are usually happy to talk to anyone that calls in.
