5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

torque converter questions

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Old 02-29-2012, 09:59 PM
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first off, has anyone heard reviews about diamond T torque converters? and second, would i be alright with a new converter with a stall speed of 1400-1500 rpm's without having to worry about breaking input shafts? i have a 03 cummins, edge ez, cold air intake and boost orface. nothing crazy but i dont wanna have to keep dumping money into the trans. i want better mpg's and reliability when i replace the trans. thanks
 
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Old 02-29-2012, 10:02 PM
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i have a diamond t and have had no problems out of it. mines only a billet single disk with my bd valve body and it holds with my mods. no slipping or flares, pretty good for the price.
 
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Old 02-29-2012, 10:08 PM
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did you get the stock or low stall speed?
 
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Old 02-29-2012, 10:12 PM
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i got stock. im pretty impressed with the quality for the price i haul hay and my tractor 3x a week and its holding up great. i no longer have the 2nd to 3rd shutter shift either which was my mine goal.
 
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Old 02-29-2012, 10:19 PM
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ya i have something like that too, my converter is locking up when i went into third, then un locking and relocking when it should around 43mph. and i get up to 2400 rpm's comming out of first sometimes. is that what you had?
 
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Old 02-29-2012, 10:54 PM
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sometimes, but mine was hunting for gears. it would shutter back and forth between 2nd and 3rd. pretty sure the valve body helped that out because i think mine had a lot to do with not getting enough pressure to the solenoid.

i needed a new tc, my old one was slipping bad. the single disk is rated at like 600 i believe. i dynoed about a year ago at 512 and 906 and like i said its holding up to everything i've thrown at it. if i ever get a new turbo i'lll prolly upgrade to a suncoast triple disk. but with diesel at 4.00 a gallon i dont see that happening anytime soon.
 
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Old 03-01-2012, 07:25 AM
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ah i got ya man, that seems to happen to all 48 RE's around 150-200k miles. have you heard anything about breaking imput shafts with a low stall? or you think i'd be aight since im not putting out too much hp
 
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Old 03-03-2012, 09:50 PM
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As long as you stay away from the triple disk TC's and lockup controllers a billet input is nice to have not a got to have. A 1400-1500 stall TC is pretty tight unless you remove a lot of the TQ management then you will get smoke trying to get a load rolling. For all around driving 1600-1700 is a much better compromise.

A lot depends on the TC builder and how they do it. Rather than concentrate on stall get the efficency of the fluid coupling at speed up intot he mid 80% range and the stall will take of itself.
 
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