TH200 issue

[Chad Rhodes]

Originally Posted by Alan Roehrich

A stator shaft problem should show up on a data logger in a very obvious manner. The starting line RPM should be substantially lower, at least 2000 RPM lower than a previous "good pass". When the stator shaft spins, the converter will not flash, and it will not multiply torque.

With clutches, or the "sprag", RPM should be slightly higher, but driveshaft RPM should be lower.

The Converter flash seemed a little high as well now that I look at the data, it also ran within .3 mph of what it had all day. I'll have it out this week

[jim powers]

i agree with Billy, broken stator support, did the same thing back in 09 with my 305 k/sa camaro

[Gary Parker]

I have broken 2 stator supports. some are now changing them with a heavier one I believe adapting a turbo 350 one... that's what it sounds like to me

[Mark Yacavone]

Originally Posted by Alan Roehrich

Billy, that should stop the converter from reaching full stall speed or flash stall speed. Normally. It's a common problem with big engines, but I don't see it too often with small blocks, especially in Stock.

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...

[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...

[Chad Rhodes]

Originally Posted by Dean Feiock

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

No engine braking in first.

If the stator support broke would it damage the converter ?

[HandOverFist]

Originally Posted by Chad Rhodes

No engine braking in first.

If the stator support broke would it damage the converter ?

I don't know that answer either. Just to be safe I'm going to let ATI cut it open for a look on ours.

[Dean Feiock]

Originally Posted by Chad Rhodes

No engine braking in first.

If the stator support broke would it damage the converter ?

Then your clutches are not on. Very few use the clutches as they are faster without the clutches on.

Even if the converter doesn't get damaged, it will be full of debris. Needs to come apart either way.