B&M torque converter not workin

[1badgtx]

Popped in a 2500 stall converter when I rebuilt my tranny...It seems to have worked just a couple of times when i first drove the car...Now it locks up right away...Any ideas?Any help would be great..
Petty Blue 67 gtx

 

[1badgtx]

No love on this one?
BMP

 

[Budnicks]

1st off I'm not a trans expert... Have you called B&M yet ?, or have you tried to talk to a trans expert yet ? {maybe the guy who rebuilt the trans}, Are you sure it's the converter, that is the issue ?, it seems like, that's kind of the opposite thing that normally happens... "If you just had the trans rebuilt", it could possibly be a bunch of different things happening, what did they do & what parts were changed/added when the trans was rebuilt ?, is it a manual valve body, stock or just a shift kit or what ?, what are the line pressures ?, were any specific mods made to the converter or trans ?, are the bands new & are they adjusted correctly ?, Is the Throttle Pressure Valve linkage {also know as kick down linkage/lever} adjusted properly or do you even use 1 ? {a manual valve body won't require a TPV linkage}, does the fluid smell burnt or look different ?, are there any metalic or other particles in the pan/fluid ?, are there any other symptoms ?, can you be more specific on the symptoms?... Maybe an expert can chime in here...

 

[Elvad]

The "stall speed" of a converter is a function of many things. The description of a 2500 RPM converter is misleading. Look at Mopar Performance converters as a reference. They are rated as 120/145/175K. 120 being stock in the 11-12" range and the 175K being about a 10" unit.

 

[Budnicks]

Maybe front pump issue, clogged filter or line pressure issue, Did you check the fluid level, with the trans in neutral "not in park" ? ... Elvad I have a reworked MP 11" 175K effectively a 3800rpm stall with my combo, I will be adding, when I remove the trans & install my Turbo Action Cheetah w/rear band apply manual valve body, this spring "probably", I can't wait, but I need to do many other things around the house 1st, before the car stuff...LOL...

 

[Budnicks]

yep

The "stall speed" of a converter is a function of many things. The description of a 2500 RPM converter is misleading. Look at Mopar Performance converters as a reference. They are rated as 120/145/175K. 120 being stock in the 11-12" range and the 175K being about a 10" unit.

:iamwithstupid: The torque converter will act differently with a high HP/TQ large cubic inch engine vs's small cubic inch engine or a moderate HP/TQ engine... a heavy car vs's a light car... or if you have 4.30:1 gears vs's 3.23:1 gears... or if you have slicks vs's street tire... the heavy car will have effectively more stall speed than an equally equipped lighter car {harder to move}... the car with the 4.30:1 gear will feel like it has less effective stall, than a car equipped with 3.23:1 gears {harder to move}... unless you have a trans-brake then the stall speed it what the engine & converter will do period... It's a gear multiplication thing {getting the car moving easier & quicker with the 4.30:1 gear} feeling like the car has less effective stall speed... Slicks bite more working the engine harder & pulling it down effecting the stall speeds... A higher HP/TQ large cubic inch engine will effectively have more stall speed vs's a small cubic inch engine or a moderate HP/TQ engine with identical TQ converters ... Also, altitude, ignition/type & timing &/or carburetor/fuel system tuning can also effect your relative effective stall speeds...

 

[67 coronet]

:iamwithstupid: The torque converter will act differently with a high HP/TQ large cubic inch engine vs's small cubic inch engine or a moderate HP/TQ engine... a heavy car vs's a light car... or if you have 4.30:1 gears vs's 3.23:1 gears... or if you have slicks vs's street tire... the heavy car will have effectively more stall speed than an equally equipped lighter car {harder to move}... the car with the 4.30:1 gear will feel like it has less effective stall, than a car equipped with 3.23:1 gears {harder to move}... unless you have a trans-brake then the stall speed it what the engine & converter will do period... It's a gear multiplication thing {getting the car moving easier & quicker with the 4.30:1 gear} feeling like the car has less effective stall speed... Slicks bite more working the engine harder & pulling it down effecting the stall speeds... A higher HP/TQ large cubic inch engine will effectively have more stall speed vs's a small cubic inch engine or a moderate HP/TQ engine with identical TQ converters ... Also, altitude, ignition/type & timing &/or carburetor/fuel system tuning can also effect your relative effective stall speeds...

very well put.i hate it when people say my converter isnt locking up at the speed it is rated for.many factors come into play.