Some possible mods for our tranny's?

Toe · **Joined:** Mon Jul 10, 2006 12:50 pm **Posts:** 44

Hey there, new guy reporting in.

I just noticed that the tranny is the same tranny that comes with the hemi in the Dodge rams. On my ram I've done a transgo shift kit which has firmed up the shifts a lot and the kick down is a lot better. In theory the shift kit should also work for the tranny in the Jeep Liberty CRD. I also put in a much better torque converter in my ram, and that has made a huge difference for daily driving around town. Perhaps the our CRD's could also benifit from an aftermarket torque converter. I got mine in my ram from http://www.edgeracingconverters.com/ though we probably wouldn't want to go with too high of a stall given our where our power is made, a high Stator, and less heat build up could only be good.

Has anyone done either of these mods in a CRD yet?

Ripster · **Posted:** Mon Jul 10, 2006 2:23 pm

Several of us have tried the TransGo shift kit with good results, but continue to test over time. I spoke with John at
http://www.importperformancetrans.com/ 866-828-7267 but we need to see if one of our members is
near this address 1105 Route 23 South, Wayne, NJ 07470 they beef up torque converters and could be a possible
solution for a beefed up TQ for this unit, but they would want to see a vehicle and see how it shifts to be able to
design a TQ for our needs. If you all ready have a source that is dependable--maybe they would be willing to
come up with a design that would work with our CRD's.

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

I'd be interested if they can provide a better tc, with heavier clutches, brazed fins, no paper based clutches, with stall speeds built for a diesel. I have read that the correct stall speed is about 500 rpm below the torque peak - if thats true, we would need something with a stall speed around 1600 rpm. I'd want some expert opinon on this before I'd order one with a lower stall speed. What did your tc for the Ram cost?

Jeger · **Posted:** Mon Jul 10, 2006 8:51 pm

I may not be as knowledgeable as some about torque converters but from what I have read and from past experience. A heavy duty TC never hurts. I wish DC would take steps to fix the problem but so far I cant imagine that happening. Therefore I would like to see someone else produce a better TC for the CRD as well.

Ranger1 · **Joined:** Mon Oct 17, 2005 7:40 pm **Posts:** 1137

Possibly the one Toe used in his Ram might work. What I'm not sure of is what happens if you use a tc thats heavy duty enough but has a stall speed that's meant for higher torque curve gasolene engines on a diesel. Some of the ones I've looked at online offer stall speeds in different ranges. What would be helpful is if someone who has the experience required in matching stall speeds to diesel engines could offer some insight into what the correct tc specs should be for a Liberty CRD engine with the 545RFE.

Toe · **Joined:** Mon Jul 10, 2006 12:50 pm **Posts:** 44

My TC from edge was just over $400.

I can tell you this one is much better built then the stock one, they claim it produces 15% less heat then the stock one too.

When I talked to the sales rep at edge, who seemed to know his stuff about TC's, claimed that nobody is offering a specific stall converter for the 545RFE right now, and that if they are saying a specific stall, you should probably steer clear. Edge has a 3000 stall coming out this X-mas apparently. The stall in this converter I have is directly linked to the amount of torque you make, more torque = higher rpm stall. 335lb's to the tires in the truck makes the stall around 2800. a stock hemi with about 288lbs to the tires would be around 2500 stall. I know the stock stall in the ram's is around 2300. Apparently it's the sqr root of the torque the engine makes, though I am not sure how those numbers are actually applied.

There's lots of stall's available for the Cummin's trannies, perhaps the converters are built the same where we could use them too. If Chrysler was smart, one TC design would fit in all their vehicles.

I'll fire off an e-mail to edge see what they have to say. Btw, what does the CRD dyno for torque stock?

Guyute1210 · **Posted:** Tue Jul 11, 2006 2:09 pm

Ripster wrote:

Several of us have tried the TransGo shift kit with good results, but continue to test over time. I spoke with John at
http://www.importperformancetrans.com/ 866-828-7267 but we need to see if one of our members is
near this address 1105 Route 23 South, Wayne, NJ 07470 they beef up torque converters and could be a possible
solution for a beefed up TQ for this unit, but they would want to see a vehicle and see how it shifts to be able to
design a TQ for our needs. If you all ready have a source that is dependable--maybe they would be willing to
come up with a design that would work with our CRD's.

Not to hijack the thread, but Jeepin' Al lives near there. But he has a 3.7l gasser. I don't know anyone else in the Mid-Atlantic section that has a CRD in or near Jersey off of I-80.

Jeger · **Posted:** Tue Jul 11, 2006 4:57 pm

Toe wrote:

I'll fire off an e-mail to edge see what they have to say. Btw, what does the CRD dyno for torque stock?

295 lbs at the crankshaft

not sure about at the wheels

Some possible mods for our tranny's?

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