I don't have the exact rating, but Tranny Filters generally run from 60-125 Microns. A strand of hair is between 80 and 100 Microns typically.

 

I think the majority of readers/posters have the ideal. The subject was the NEED and BENEFIT of installing a bypass filter in cooling circuit with a .025 feed orfice. The need/benefit died. Now if you had installed a full flow low restriction filter in cooler line you would have gotten a kudo, not that it would have sustantially benefited the life of tranny. I and a few others have enlightened the masses and I will proceed to greener pastures to benefit others. JMHO and years of observing failures.

 

I'm not worried about the 48RE one bit. well built transmission if kept stock.

 

Not to say it is a good idea or a bad idea to have a bypass filter in the trans cooler loop but anyone with any kind of engineering skills would put a small control orifice on the down stream side of the bypass filter.

Not rocket science.

 

The problem with running a full flow inline on the cooler loop is that is does present a flow restriction, which is likely to build as the filter fills. That would be a minimal risk as long as the inline filter has a built in pressure bypass at the average 6-7 psi or whatever it is, but still presenting an overall cooling flow deficit. If say, a GM-type filter/head without the block-resident bypass was used, that would present a serious risk under an inline/full-flow setup and not be recommended.

The full "bypass" type arrangement as shown here is completely safe, presenting zero cooling flow restriction and zero risk due to filter clogging. It just stops flowing at that point and the system behaves as stock again.
You'd never know that seeing some of the responses here.
Just to you correct you one last time buddy: The subject was and still is "Worried About Your 48RE?" Just disregard and move on if you're not worried about it and stop trying to poo-poo a great idea for an easy low-cost mod. Maybe you wouldn't have observed so many failures over the years if you knew how to keep the moving parts clean. I have a NEED to take care of my equipment and see that that it maintains peak performance and lasts as long as possible. My wallet will BENEFIT from that in the long run. If you don't have the same need for that benefit, that's cool. The only thing that will die WRT this topic is transmissions that are not serviced properly. And among those that are, some will last longer than others.

 

I thought I was going to have a terrible week, but after reading this thread I found that my problems were oh so small!!!!
Jay

 

That is exactly the point, the efficacy of the solution.

Quite simply, to do efficent filtering the system needs to be a positive bypass not a demand one. The 2% is at full flow or restricted? What micron is the filter? At what point does filter restriction override bypass flow?

Then there is the ability of the fluid to carry particles and not impact wear rates. Composite part of the fluid formulation and one of the critical test ares.

Last but not least, if one needs to filter that much more than the stock filter the trans has other problems. Given a correctly funtioning transmission you simply don't have that kind of grabage floating around in the fluid. If its not functioning correctly no amount filtering is going to significantly effect the life of the transmission.


The solution was presented as fait accompli to a common problem without any attention to details that make a significant difference. The fact that any valid objections were simply ignored or derided as too hard for some to understand just puts it in the same category as the rest of the snake oil and their proponents. If an idea can't stand a debate and dissection then its an opinion with no basis, should more be expected?

The problem is neither common nor simple so why would the solution be? One has to think that this would have been incorporated in the evolving design of some 40 years if it was so simple, cheap, and effective.

 

The bypass filter will be effective removing particles between 13um and the lower limit on the stock filter. There is no question about that. Did you look at any of the pics in 04ctd's photobucket of his trans service (DSC02657.jpg)? How big do you think the particles in that magnet smear are? Do you think the magnet catches them all? Why aren't they in the filter? I'm working with numbers here. What are you working with?
These questions have already been answered. You might want to go back and re-read the thread to enable better understanding. But I will say that I expect to go a slightly larger restrictor after awhile, seeing how it goes.
Again, look at the visual evidence, and do the math. You are supposing some "all is well in trannyland" fantasy that is just not reality.
Says who? You?
That's because they weren't valid. OBTW, I believe you and some others making unsubstantiated negative comments would constitute the beginning of the derision part.
I think the problem with this idea that some people just can't bring facts and experience to the debate.
The problem is common. Wear debris is floating around in every transmission on the planet right at this moment. And the solution, or at least a good remedy, is simple and inexpensive. But it's an extra few dollars Dodge won't spend in order to make another penny's profit. The list of those is long and storied, but I won't go into that here now.

Ignorance really is bliss, I suppose.

 

It may or may not be effective to have a bypass oil filter system on the transmission but it can not hurt.

Examples of this need for something that Dodge and Cummins do not see the need for, are bypass oil filter systems. Dodge did not put these on the engines but there are several makers of these systems. Dodge thinks it is good enough as is but is it really?

Fuel systems that come on the trucks seem to be fine with Dodge and Cummins but that does not stop people from putting hundreds and hundreds into high flow recirc systems that de-water and de-aerate the fuel. Is it needed?? Some people really think it is.

Cooling jacket pressure and temperature relief systems. Lots of money there but again Dodge and Cummins are a no show on thinking it is needed.

Some may need to get off the old high horse and try to see the positive in this mod. Now with all that said, is Dodge and Cummins always right?? Well if they were then we would not have much to talk about on these forums.

 

Thanks for that, steel. I deciced to start with a .025" (630 microns)restrictor because that is big enough to allow anything the stock filter lets through, but small enough to ensure no flow loss on the cooler circuit. If the filter seems to last, I'll go a little larger to get more flow throught the bypass.

The real truth to the overall effectiveness will be how long the bypass filter lasts. How's your's doing Andy?

 

Everything you list, with the exception of bypass filters, has a quantifiable benefit, most to address going beyond the stock engineering, that has been documented many times over. Where is the validity in your beliefs cuz its lacking sufficient hard evidence?

I will tell you, in the eye of the beholder. I have consistently said if you like it great, but, why must some of us endure derision and critcism for OUR choice to not see it the same way? How about you and the rest of the bypass minority crawl of YOUR high horse and quit DERIDING others decision to see it differently. You claim to want debate and discussion but any questions or points are meant with rancor and derision.

Ace, your another internet expert hiding behind a keyboard using avoidance and derision to further your pompous self congratulatory ramblings. From your responses you couldn't address the issues if you were so inclined. You lack the maturity and cogntive processses needed to be anything other than a petulant troll.


Spooler got this one right, why bother. He and I do not always agree but at least we respect each others view point enough to NOT resort to derision and childish name calling.

I could suggest y'all port over to TheDieselStop where you'd fit right in, but, thats low even for the depths this thread has plumbed.

 

I'm more curious as to what the minimum micron allowance would be for the pump to be able to push through the media?

Let's say he(you) installed a filter that was good down to 25 microns is there enough pressure in the tranny to push the fluid through?

 

Got any numbers to support that?
Because you asked for it!
Ya think? Sticks and stones...
I can't believe you contradicted yourself in the same post within two lines of typing. Way to go!

So anyway... New depth plumbed? Yep...

 

This is really easy to determine through trial and error. As long as the filter is heating up you know oil is flowing. That's why I used the .025" orifice as a starting point. It takes about a 15 minute drive before it even starts getting warm. Slower is better for filtering purposes. It's along the lines of why you see more silt buildup around the bend in a river where the water flow slows. Not enough force to push it through and it just drops out. That's where the stuff on the magnet comes from - whatever drops out enough to gather on the bottom of the pan. Probably relatively small amount of the overall debris circulating in the fluid.

 

no_6_oh_no - Someone sure must have peed in your corn flakes this morning because I sure did not call anyone names nor did I say the bypass was a good idea. I just said it is something to consider.

There were many points made in this thread that the stock filtering on the 727 and 48re are time tested, so why isn't stock good enough for the fuel, water and engine oil? That was the basis for my question, why do those modification but not consider this one.

You may think it is okay to call Ace names but I have not been derisive or contemptuous of your side other then to indicate that you really do speak down to the members here. It is fine to use words that are not in common use but man 3 in two sentences is a bit much but it is still apparent you are one of the more common folk because "cuz" is not very well spoken of you.