Engine/Transmission (1994 - 1998) Extra tranmission spin on filter

[RALLER]

I have a 97 3500 with a automatic tranmission. I am instaling a spin on filter in the return line. I have everthing i need except the filter. I picked up a tranmission filter #96067 from carquest, and it is less than 3 inches long. Seams kind of small. I went to napa and they came up with filter #1410 wich is labled a hydraulic filter. This filter is about twice the size. Woud this filter be ok for tranmission fluid? What i dont want to do is restrict the fluid flow wich woud cause the tranmission to run hot. Maby this is all a bad idea? Apericate any input. Thanks - BOB

 

[fox]

A plugged filter in the return line (or anywhere in the trans cooler circuit) will reduce or stop lubrication in the trans!!

Make sure that you have a warning light installed.

 

[JohnBoy5]

I to have thought about doing something like this but been worried about the flow and heat issue. Is there anyone that has done this and been successful with this and NO increase in temp or flow restriction? I think heat will hurt the trans more then anything. if i had to guess the factory filter does a pretty good job???

 

[sodakdodge]

Baldwin BT839 about $10. Dieselsite.com sells a bypass filter kit for the Dodge CTD transmissions. This is the number on the filter they include with their kit. Check them out, they are good people, I bought quite a few items for a PSD from them, Bob Riley knows what he is doing, and great customer service. Also check out the Turbo Master wastegate controller. I had one on a 2002 7. 3L PSD WOW did it ever make a difference..... I wish I could put one on my 2006 CTD. Hope some of this helps.

 

[chipster]

I have a 97 3500 with a automatic tranmission. I am instaling a spin on filter in the return line. I have everthing i need except the filter. I picked up a tranmission filter #96067 from carquest, and it is less than 3 inches long. Seams kind of small. I went to napa and they came up with filter #1410 wich is labled a hydraulic filter. This filter is about twice the size. Woud this filter be ok for tranmission fluid? What i dont want to do is restrict the fluid flow wich woud cause the tranmission to run hot. Maby this is all a bad idea? Apericate any input. Thanks - BOB

when I put a new allison 545 with a 8. 2 detroit fuel pincher v-8 turbo diesel in my `70 suburban,back in 1980. I HAD to put a filter in the return line to keep the warranty in effect. the filter had to be fram HP 1 or equivalent, and the cooler lines had to be 1/2" or larger. it has been on the truck for 30 years and no problems. I even kept the filter when I changed the trans to an Allison 2400, in 2005. I have put the same filter on a bunch of th 400 transmissions with no problems. the HP-1 filter has a pressure relief valve in it and really keeps the oil clean. whenever I do a swap, with a 47rh or th-400, I run 1/2" line to the largest cooler that B&M makes, and to the filter and then to the trans. If you plan on keeping a truck for a while like I do, this is the way to fly !!:-laf If you keep the stock lines the filter will not be a restriction.

 

[fox]

Good info, thanks.

 

[DPashko]

I have a BD trans with converter and the auxillary trans filter kit. Seems to work good. heres the manual you can build your own and has a list of filters they use.





http://www.dieselperformance.com/productManual/1064017_Dodge_Transmission_Filter_Kit1.pdf

 

[BIGNASTY]

Just a thought

A plugged filter in the return line (or anywhere in the trans cooler circuit) will reduce or stop lubrication in the trans!!

Make sure that you have a warning light installed.

I was thinking about a bypass filter that way if the filter got a restriction or plugged it would still bypass and lubrication would still be going on. But an inline would stop lube. Bypass would still filter and really is the inline filter needed is the trans fluid really that bad if so I think something more than filtration is needed JMO

 

[Bob4x4]

I ran a big spin on filter on a service truck I had years ago. Cheap insurance.

If you have so much debris in your cooler line to plug a full size filter your trans is shot any way.

 

[cerberusiam]

I was thinking about a bypass filter that way if the filter got a restriction or plugged it would still bypass and lubrication would still be going on. But an inline would stop lube. Bypass would still filter and really is the inline filter needed is the trans fluid really that bad if so I think something more than filtration is needed JMO

A true bypass filter is not a good idea because you are actually robbing part of the flow from the trans lube and cooling system. An inline filter is better but is still a flow restriction as the cooler relies on flow more than pressure to move the fluid thru. Anything that reduces flow can be an issue.



The trans is a relatively well sealed unit and not subject to outside contamination in normal operations, the need for extra filtration is relatively small if the transmission is in good working order and service intervals are met. Bottom line, if the trans is generating enough garbage to warrant a filter it has problems a filter will not address.

 

[JMcCoy]

cerberusiam is correct. You do not need another filter. If I remember correctly, I believe ATS advised against it. I put a magnet at the bottom of all my transmissions. I end up with a pile of fine metal shavings every time. You can just stick it to the outside until you get around to dropping the pan. Most aftermarket pans have a magnetic drain plug. Good luck

 

[chipster]

cerberusiam is correct. You do not need another filter. If I remember correctly, I believe ATS advised against it. I put a magnet at the bottom of all my transmissions. I end up with a pile of fine metal shavings every time. You can just stick it to the outside until you get around to dropping the pan. Most aftermarket pans have a magnetic drain plug. Good luck

ATS probably has had expierence with some small filters people put in the return line, but when Allison recomends a filter and where to put it I listen. I believe allison builds many more heavy duty transmissions than ATS and a bunch of other trans builders, and their reason for the filter is that when the torque converter starts to die the rubbish will stop in the filter, not be flushed into the rest of the trans. the large filter with a by-pass and large lines that allison recomends will not restrict the flow and will give the trans the best chance of a long life. jmho !!

 

[cerberusiam]

ATS probably has had expierence with some small filters people put in the return line, but when Allison recomends a filter and where to put it I listen. I believe allison builds many more heavy duty transmissions than ATS and a bunch of other trans builders,

Allison doesn't build Torque Flites, thats the big difference. If they built the transmissions for Dodge that may carry some weight but since they don't its meaningless. In addition, the Allison circultion and use of the cooler fluid is completely different than the Dodge units, always has been. While the assumption may be good for an Ally, its bad for 4xR anything.



A 545 is a far cry from a 47RE in operation.

their reason for the filter is that when the torque converter starts to die the rubbish will stop in the filter, not be flushed into the rest of the trans.

Like I said, if you need to filter the fluid the filter isn't doing you any good. If the TC starts crapping out you rebuild the trans. Period. The reason the filter is there, as it is on the World series units, is because they slip things to manage the TQ and it eats the steels and frictions faster. Again, the transmission is designed for filtering the cooler fluid because of that.

the large filter with a by-pass and large lines that allison recomends will not restrict the flow and will give the trans the best chance of a long life. jmho !!

ANY restriction will effect the flow, thats the way it works. The Dodge transmissions rely on a specific flow rate based on the restrictions in the factory system. When you change anything there you change the flow rates. A filter that is fine enough to do any good will add too much restriction, if the bypass pressure is to low it won't do much filtering, if all it does is filter the large chunks the trans has bigger problems the filter won't cure. In many ways its a waste.

 

[JMcCoy]

That is correct, it's not an Allison. There is always someone out there who hates ATS. It's almost never someone who has ever owned one. I will be willing to bet ATS has more experience building a 47re. The number one problem with the 47re is lack of LINE PRESSURE. That is what causes the clutches and the already weak torque converter to slip. That is why BD offers the BD PressureLoc or valve bodies (I didn't want to use the ATS valve body for an example). They are to address line pressure! Even if it is on the return side, it will effect the pressure and flow. Many transmission builders won't cover the transmission if you don't remove the check ball in the line due to it's tendency to stick. If you have so much contamination that you need a second filter, you have bigger problems. Besides, I would rather drop my pan and see a pile of parts than changing a spin on filter before I take a trip accoss the country. To give your transmission the best chance of a long life, just open your manual and look up filter/fluid change intervals. JMHO