IPT's TC lock up function: what are it's weak spots?

[definitiveno]

I have an older 9 inch billet torque converter and I understand they no longer sell my version any more due to lock up failures. I just wanted to get a good understanding of what makes them fail. Were the failures due to people trying to force the lock up under a load or was it simply under engineered to handle big hp. My car is flowing about 65lbs/min for reference...


I have a manual TC lock up switch and I am trying to figure out if I can still drop a gear and get into the throttle while the TC was locked or if it will destroy the lock up function. It would also be nice to lock it up while dynoing the car to see what it puts down.

Transdude, it would be nice if you could offer some input on this.

 

[HighPSI TSi Guy]

I've ran the lockup on the dyno before when tuning cars. But I generally don't keep it on, just did it to see what would change. I wouldn't be running through the gears with the lockup engaged. It's supposed to be for highway cruising only.

 

[definitiveno]

When I bought mine IPT was calling it the auto dsm's new 5th gear and in the part description said the lock up was indestructible. I guess when I bought it I made other plans for it besides just cruising.....

If I knew how/why they were failing I guess then I would know what I could get away with while it's engaged.

Btw Dave, the tcu is working flawlessly. 1-2 is at about 8700rpm and 2-3 is at about 8100rpm. This is on e85 running 29psi. Obviosly it shifts a little sooner on 91 octane/24psi. My mechanic says shifts feel great.

Also your advice on the TC lock up switch worked perfectly. Just trying to get a firm grip on what it's capable of now but so far every things doing great.

Dsmlink said we were able to do 0-60 in 3 seconds flat on e85/29psi and 0-60 in 3.8 seconds on 91 octane..

Note to transdude: I am not trying to call you out or any thing. On paper it probably was a bad ass converter and in practice the lock up didn't pan out. That's fine, things change. I was just hoping you could help us understand why they were failing.... Your input would be very much appreciated.

 

[transdude]

When I bought mine IPT was calling it the auto dsm's new 5th gear and in the part description said the lock up was indestructible. I guess when I bought it I made other plans for it besides just cruising.....

If I knew how/why they were failing I guess then I would know what I could get away with while it's engaged.

Btw Dave, the tcu is working flawlessly. 1-2 is at about 8700rpm and 2-3 is at about 8100rpm. This is on e85 running 29psi. Obviosly it shifts a little sooner on 91 octane/24psi. My mechanic says shifts feel great.

Also your advice on the TC lock up switch worked perfectly. Just trying to get a firm grip on what it's capable of now but so far every things doing great.

Dsmlink said we were able to do 0-60 in 3 seconds flat on e85/29psi and 0-60 in 3.8 seconds on 91 octane..

Note to transdude: I am not trying to call you out or any thing. On paper it probably was a bad ass converter and in practice the lock up didn't pan out. That's fine, things change. I was just hoping you could help us understand why they were failing.... Your input would be very much appreciated.

Dude, what are you talking about? There is so much nonsense, craziness and untruth in your post that I don't even know where to begin addressing it.

I have always told people that lock up is not for full throttle operation (including on dynos). It will burn the lock up clutches immediately. This is pretty common knowledge among just about everyone who has an auto DSM .

Lock up is designed to be used under coast conditions. No exceptions. No one has ever been told anything different.

Furthermore, what the hell do you mean that we are no longer sell your version? There has only been one version since we've been selling them.

What do you mean that "the lock up didn't pan out"? Lock up works just fine. is anyone having problems? I'm not seeing them back here. They are virtually indestructible for their intended purpose. The only problem would be with someone doing what you are trying to do.

Also how did you come up with the statement that "IPT was calling it the auto dsm's new 5th gear" I've never heard that from anyone except you.

Maybe you should just pick up the phone if you have questions rather than just spewing nonsense.

-John

 

[TREV TEC]

Dude, what are you talking about? There is so much nonsense, craziness and untruth in your post that I don't even know where to begin addressing it.

I have always told people that lock up is not for full throttle operation (including on dynos). It will burn the lock up clutches immediately. This is pretty common knowledge among just about everyone who has an auto DSM .

Lock up is designed to be used under coast conditions. No exceptions. No one has ever been told anything different.

Furthermore, what the hell do you mean that we are no longer sell your version? There has only been one version since we've been selling them.

What do you mean that "the lock up didn't pan out"? Lock up works just fine. is anyone having problems? I'm not seeing them back here. They are virtually indestructible for their intended purpose. The only problem would be with someone doing what you are trying to do.

Also how did you come up with the statement that "IPT was calling it the auto dsm's new 5th gear" I've never heard that from anyone except you.

Maybe you should just pick up the phone if you have questions rather than just spewing nonsense.

-John

Thats is just funny to read