TH200 issue

[Chad Rhodes]

Originally Posted by Mark Yacavone

As stated, it won't stall up with stator free wheeling..It'll just act like a stock converter almost.
The low sprag is the weak spot alright.
You need to find out if the lo/rev clutches are on or off with your valve body.
If off ,and just the forward clutch on, I'm going with the sprag slipping..
Probably find broken springs and distortion on some kind...

It's a turbo action e shift if anyone knows the answer before I call tomorrow.

[Dean Feiock]

If you have engine breaking in 1st gear, then the clutches are on.

[HandOverFist]

Originally Posted by Billy Nees

Broken stator support.

Happened to our 200 yesterday at Bowling Green...

[Dean Feiock]

Originally Posted by HandOverFist

Happened to our 200 yesterday at Bowling Green...

Rich, is that paint or is your case broken? Hard to tell from the picture.

[Alan Roehrich]

Okay, the sprag in the converter is what the stator shaft is locked to. So the shock of the stator shaft breaking is applied to the converter, and as such, the sprag. Is it broken now? Maybe. Is it possible that it may break later because of that? Yes.


To me, the best solution for this problem is to have a race pump built, with a TH stator as opposed to the metric stator, and upgrade the input shaft at the same time, to the larger TH spline. That gets you a better stator and a better input shaft, which will be less likely to fail this way later. It also allows you to use a TH style converter. Yes, it is more expensive. But broken parts cost money, and usually a race.

[Dean Feiock]

Originally Posted by Alan Roehrich

Okay, the sprag in the converter is what the stator shaft is locked to. So the shock of the stator shaft breaking is applied to the converter, and as such, the sprag. Is it broken now? Maybe. Is it possible that it may break later because of that? Yes.


To me, the best solution for this problem is to have a race pump built, with a TH stator as opposed to the metric stator, and upgrade the input shaft at the same time, to the larger TH spline. That gets you a better stator and a better input shaft, which will be less likely to fail this way later. It also allows you to use a TH style converter. Yes, it is more expensive. But broken parts cost money, and usually a race.

The metric input shaft is rarely an issue. If anything, it's the connection of the shaft to the forward drum that fails.

There are pumps that have an upgraded metric stator support installed to solve this problem. Like a 200-4R, a stator upgrade goes a long way to making a durable long-life pump.

[HandOverFist]

Originally Posted by Dean Feiock

Rich, is that paint or is your case broken? Hard to tell from the picture.

Good question...I had not noticed that. I'll let Arnett look at that when I hand if off.