convertor stall problem

astikhossw · 07-26-2010, 03:17 PM

Maybe,the last couple of times at the track i have been having this problem with my stall speed changing, i would trans break stall it in the pits and it would zing right up to 6600 but when i would stage and come up on the break it would only go up to 3500 and that would make for a very lazy run.Has anyone else had this problem and am i thinking right that this is a convertor problem.

Mark Yacavone · 07-26-2010, 04:31 PM

It could very well be a sprag problem . If the sprag is not holding the stator in a fixed position, you'll have no torque multiplication and a very low stall speed.
What size , make, etc? Is it designed for trans brake usage?

astikhossw · 07-26-2010, 04:45 PM

8 inch built by mike munsinger and built to be used with trans brake.

Mark Yacavone · 07-26-2010, 05:03 PM

Maybe you could talk to Mike about converting it to a mechanical diode type of sprag. That is, if he's available and not too busy,

Dave Ribeiro · 07-26-2010, 05:14 PM

It sounds like a sprag problem, just as Mark said ... I had one go and the car wouldn't leave the line and started to pop ..
It wouldn't stall above 2,500 on the starting line and felt real flat, lost ET & MPH big time.... Get someone to look at it ASAP.....

astikhossw · 07-26-2010, 07:07 PM

Good i thought that may be the problem, i am in the middle of changing out the transmission and did'nt want to put it back in and have the same problem pop up and by the way i am only changing to another powerglide with higher ratio.Thanks guy's

Alan Roehrich · 07-26-2010, 08:03 PM

More likely, the stator shaft in the pump is slipping. A sprag usually is either good, or bad, it either holds, or it doesn't. If it works, then doesn't work, then works again, it is most often a slipping stator shaft in the pump. Have the converter repaired because the stator shaft slipping can damage the converter. But it sounds a lot like the stator shaft is slipping.

07-26-2010, 03:17 PM	#1
astikhossw Member Join Date: Jul 2008 Location: moreno valley Ca Posts: 266 Likes: 2 Liked 20 Times in 9 Posts	convertor stall problem Maybe,the last couple of times at the track i have been having this problem with my stall speed changing, i would trans break stall it in the pits and it would zing right up to 6600 but when i would stage and come up on the break it would only go up to 3500 and that would make for a very lazy run.Has anyone else had this problem and am i thinking right that this is a convertor problem.

07-26-2010, 04:31 PM	#2
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,815 Likes: 2,903 Liked 5,121 Times in 1,952 Posts	Re: convertor stall problem It could very well be a sprag problem . If the sprag is not holding the stator in a fixed position, you'll have no torque multiplication and a very low stall speed. What size , make, etc? Is it designed for trans brake usage? __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

07-26-2010, 04:45 PM	#3
astikhossw Member Join Date: Jul 2008 Location: moreno valley Ca Posts: 266 Likes: 2 Liked 20 Times in 9 Posts	Re: convertor stall problem 8 inch built by mike munsinger and built to be used with trans brake.

07-26-2010, 05:03 PM	#4
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,815 Likes: 2,903 Liked 5,121 Times in 1,952 Posts	Re: convertor stall problem Maybe you could talk to Mike about converting it to a mechanical diode type of sprag. That is, if he's available and not too busy, __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

07-26-2010, 05:14 PM	#5
Dave Ribeiro VIP Member Join Date: Sep 2002 Location: Williamsburg, Va.---USA Posts: 1,827 Likes: 1,612 Liked 56 Times in 27 Posts	Re: convertor stall problem It sounds like a sprag problem, just as Mark said ... I had one go and the car wouldn't leave the line and started to pop .. It wouldn't stall above 2,500 on the starting line and felt real flat, lost ET & MPH big time.... Get someone to look at it ASAP..... __________________ Dave Ribeiro 1033 STK

07-26-2010, 07:07 PM	#6
astikhossw Member Join Date: Jul 2008 Location: moreno valley Ca Posts: 266 Likes: 2 Liked 20 Times in 9 Posts	Re: convertor stall problem Good i thought that may be the problem, i am in the middle of changing out the transmission and did'nt want to put it back in and have the same problem pop up and by the way i am only changing to another powerglide with higher ratio.Thanks guy's

07-26-2010, 08:03 PM	#7
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,821 Times in 413 Posts	Re: convertor stall problem More likely, the stator shaft in the pump is slipping. A sprag usually is either good, or bad, it either holds, or it doesn't. If it works, then doesn't work, then works again, it is most often a slipping stator shaft in the pump. Have the converter repaired because the stator shaft slipping can damage the converter. But it sounds a lot like the stator shaft is slipping. __________________ Alan Roehrich 212A G/S