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View Full Version : torque converter sizing

Slow Ride
02-24-2007, 11:40 PM
When a converter is classified as say a 10" converter, is that the case size or the internals?

The first reason I ask is so I don't talk out of my a$$ when talking converters, the second is my converter in my blazer is smaller than any I've used before and I'd like to have an idea of what it is before I sink any money into it to have it rebuilt because it makes LOTS of noise.

http://i56.photobucket.com/albums/g163/slowride454/blazer%202007/DSCN0437.jpg
http://i56.photobucket.com/albums/g163/slowride454/blazer%202007/DSCN0438.jpg

the red one is a Hughes GM25 for reference and the small one is of unknown origin. Previous owner was told it is a Coan, but I don't know for sure. There are no marking on it at all.

Sorry for the dumb questions.
BLUE66
02-25-2007, 07:31 AM
I have a 9.5" we can compare it too before I send it in for some "tweaks".
Slow Ride
04-03-2007, 10:47 PM
Well I got a new 10" converter today and it is 10" to the OD of the turbine housing. Doesn't make any more sense to me since I asked a Pat Flynn and he said it is the turbine housing ID. Oh well, here are some pics of my new parts...

http://i56.photobucket.com/albums/g163/slowride454/blazer%202007/DSCN0496.jpg
http://i56.photobucket.com/albums/g163/slowride454/blazer%202007/DSCN0497.jpg
http://i56.photobucket.com/albums/g163/slowride454/blazer%202007/DSCN0499.jpg
Kevin Garceau
04-04-2007, 08:21 AM
I asked one of my friends to come and give some clarification for this. He is a trans builder and can and does design converters for proper applications. He is also a dealer for TCI/BTE/ and several others.

Oh and my chi town friend (different guy) says no wonder you all get your asses handed to yourselves :)

but to answer your question its the internals... I hope Steve will take a few minutes and post exactly what it does, and what goes on inside a converter.
Slow Ride
04-04-2007, 10:17 AM
I'm the only slow turd on this site. I apparently am also the only retard as well.

I know how a converter works, but am always looking for more info. I am just wondering how they designate them. Kind of like saying you got a 10" cock. It all depend on where you start your measurement from. From where your sac starts or from the top of your ass crack.LOL
Kevin Garceau
04-04-2007, 11:27 AM
Well Im guessing many dont know exactly what role the stator plays, what positive and negative fin angle does etc... if he comes over and can help explain it, we could all be better informed and make better choices.

I have heard and seen him explain it many times and still completely confused what happens inside a converter, and why.

Oh and my buddy talking smack... he runs 7s in the qtr with a small block, no power adders.