9/11 convertor

[turboaaron]

9/11

so much for me wanting a 9/11 i think i'll hold offm, just rebuild the trans and reuse th stock d-5, i've had the others on diff combos and for daily street use i think the stock convertor is fine..

 

[FastRegalWE2]

Originally posted by REDS HOT AIR
so far 2 dead ones here
possibly a 3rd

Third One CONFIRMED DEAD

 

[Intercooler]

Originally posted by 1of1035
I actually had my tranny go out on me today as well. I just had a complete rebuild about 3 months ago. Everything was replaced with hardened or billet pieces. Front pump, input, foward drum and so on. My tranny started making noise yesterday and today I was leaving work for a lunch break and had no reverse or foward gears. I talked to my builder and he said it might be a converter problem. I also have a billet 9x11. I'm wondering if this could be part of the bad batch of converters. I haven't even beat on the tranny besides a few burnouts when I first got it back. Tranny should be apart in a day or two. I'll post back with the results.

Was the drum billet? With no gears it sounds like the drum snapped.

 

[87GNcospg]

ive heard that these converters need some spacing between them and the flywheel. washers or something. helps when the converter "balloons". i think.
is this true and could this be causing the failures?

 

[GNeric]

If you put spacers in between the flexplate and converter, it drives the converter deeper into the pump. When the converter balloons, this drives the hub even deeper into the pump rotor which binds up and kills the aluminum and locks up the rotor and then snaps it...possibly twisting out the hub or splitting open the tangs on the hub. If the hub is off center, it wipes out the bushing and then the seal leaks. Very quickly.

 

[SloGN]

9-11 convertor

GNeric


The hub being off-center is what killed my front pump in less than 400 miles on a fresh rebuild. i got lucky and all i had to do was installed a new pump assembly and have the convertor fixed by a local guy here in NC


Convertor design specialist
Greg Slack of albermarle NC

 

[GNeric]

There is a 75 year old guy near here that builds converters and had a little class one day on what happens when things aren't "square". If the hub is off center by .008" and run the car at idle for about half an hour, your bushing will be toast all the way around the inner diameter of the bushing. If it is not perpendicular to the "pump" of the converter and has runout, the bushing will be wiped out on the inside edge near the rotor and it usually makes the bushing walk forward and cut the seal or it pops the seal out. This all usually happens a lot sooner than 400 miles. I fixed a 4L60E a month or so ago that was "built" by a cheapy shop and made it as far as our shop (22minute drive or about). This was their second attempt at fixing his trans and we fixed it for him. His converter was a poorly built PWM converter and the hub was not squared to the body and had just under .008" runout at the tangs. Wiped out the bushing, seal, rotor, stator support side of the pump and of course the converter.