How to determine data from a torque converter?

Hello,

Can anyone tell me how i can determine data (stall speed) from a (new) converter that i have laying around?
There's nothing written on the converter itself.
Can one determine / estimate based on thickness, diameter, or other variables?

thanks.

install it and find out that the only way I know.


Randy

send it to your choice of converter builders and cut it open,they can tell you what you got and hopefully make it what you want.

^^^^^What they said. I like coll40's better because then your converter guy can make it what it needs to be.

hmmm....
thats a bit sad...
i think i'll go for the first option, and disassemble / replace it when it's NOT what i want...

dutchie wrote:hmmm....
thats a bit sad...
i think i'll go for the first option, and disassemble / replace it when it's NOT what i want...

i'd want to know a little about the converter before i went to the trouble of tryen it out.you did say it was new so it should be pritty safe but i've saw cheap converters scrap a good trans.

cool40 wrote:

dutchie wrote:hmmm....
thats a bit sad...
i think i'll go for the first option, and disassemble / replace it when it's NOT what i want...

i'd want to know a little about the converter before i went to the trouble of tryen it out.you did say it was new so it should be pritty safe but i've saw cheap converters scrap a good trans.

I agree. It is pretty cheap to get it checked out. Most any converter company can check it out and make adjustments.

Just overlooked the converter.
It's ingraved with "F49" , then painted turquoise.
With a permanent marker there's written " DF 5/6 LS" on it.
Do these numbers mean anything to someone?
Tried google, and comes with following: "E4OD/4R100 12" 1.375 PILOT,89UP,LS, LU, 300,460 ENG DF56LS"

Does this mean a stallspeed of 1375 Rpm?




When i'd have it checked, how do they do this?

Thanks.

dutchie wrote:Just overlooked the converter.
It's ingraved with "F49" , then painted turquoise.
With a permanent marker there's written " DF 5/6 LS" on it.
Do these numbers mean anything to someone?
Tried google, and comes with following: "E4OD/4R100 12" 1.375 PILOT,89UP,LS, LU, 300,460 ENG DF56LS"

Does this mean a stallspeed of 1375 Rpm?




When i'd have it checked, how do they do this?

Thanks.

Are you looking to use this with a C6/BBF? E4OD/4R100 transmissions are like a C6 with 4 speeds, and came in trucks & vans, but I'm not sure if the input shafts match up. I'll let someone else chime in there. Your numbers show a 12" converter, with a 1.375" pilot, which is 460-compatible, and I'm pretty sure the LU stands for "lock-up", a feature used only by the E4OD/4R100. Again, that may make it incompatible with the C6 also. And finally, it's for 1989 and up overdrive transmissions.

Hope that helps

Doesn't really help, but thanks for the effort taken.
It's not for a C6, it's for a E4OD that i plan to put to my 466.
The converter sat in it, so it fits..
I only need to know the specs of the stall of it..
I "think" that the LS stands for "low stall" , but how low exactly isn't mentioned unfortunately.

I would suggest you get it checked before you put it in. Those transmissions are to big and heavy to be putting in and pulling out . IMHO! Good luck!

dutchie wrote:
I "think" that the LS stands for "low stall" , but how low exactly isn't mentioned unfortunately.

That's what I figured. A way to find out is to spin it by hand until it locks up at like 1800 rpm's or whatever. Might take some effort but have a buddy sit and watch the revolutions. I wish I knew too, I'm in the same situation but I'm just going to get a new one. I don't feel like having to pull it back out because its not what I wanted, your best bet is to get a new one. Might not be what you want to hear but you'll probably thank me later when you go to do a burnout.

I'd venture to guess being 12" it's pretty mild, 1500-1800 is pretty typical stock stuff.

that is my thought also.
olnly thing is, when i run 1700rpm highway cruise, just up to stall, won't it slip just a bit and generate tremendous heat?
I thought that RPM in lockup always should be past stall Rpm?

Sounds like a Precision unit, had nothin but trouble out of them behind diesel stuff.................

The converter clutch will lockup at cruise, so you won't have problems with cruise rpm being lower than the stall speed.

Greg

okay, i called the company that eventually sold the converter.
i got a lot of info, maybe someone can chime in and help me further o,.
To begin, it is a low stall speed, but an exact number wasn't there, it averaged approx. 1800 Rpm's.

The other data i got was:

Diameter: 12 inch
Input shaft: 31 splines
Hub style: flats
Hub diameter: 1.9965
Hub height: 2.312
pilot diameter: 1.375
Pilot length: 2.00
Mounting bolt radius: 5.700
Mounting style: 4 studs
And it has a lockup.

Anyone can tell more with these numbers?
I think 1800 Rpm's is good, right?
Seems a low stall to me.
And as mentioned before by someone, since it has a lockup, the cruise speed RPM's arn't really a problem being lower as the stall speed.

So, i guess i just going to try it under the car when the engine is ready

Thanks!