I thought I saw on one of the truck related tv shows that someone has a remote filtration system for the allison. Does any one know if they exist and who may make them? I would think that super filtration similar to the amsoil set up for the engine would greatly help the tranny too, or am I on Crack?

Why exactly would you want a remote filter for the Allison? It is one of the most easiest filters to reach and change out.

Yes -- I like the idea -- of course I have a filtering fetish ;) see sig... I hope it could happen.

With all of those filters you should be making some very tasty drinking water.):h

I think he's looking for a full-flow plus bypass type remote filtration system. If so, there are some folks over at bobistheoilguy.com that are running bypass tranny filters. Go over there and do a search or ask around.

Probably the important thing to note is when fooling around with rigging up a bypass filtration system for the transmission is that fluid must still flow in the event of filter pluggage.

I'd be interested in what Mike L or dmaxalliTech has to say about this. I don't know what the possible pressure drop could do to performance or if this is even advisable...or how things might work with a built tranny operating at higher pressures.

I think Marcdeluca tried this same type of mod......Lets just say that MikeL didnt really applaud him for his efforts.

I am still against the idea because of possible restriction. Why not change the spin-on every 5K like I do? That is plenty. Some of the guys have installed big fuel filters and had to put a lift pump on to make the truck run; think about it.
mike

Do you think clogging would be a problem if it's just a bypass? I don't see how it could matter. It would still go through the full flow filter... I am thinking more along the lines of an oilguard mindset. I think it could work well. Plus be really neat to have. :)

FWIW, MikeL is the second transmission guy I've heard express reservations against such an idea.

The first transmission guy I talked to about this said it might be okay to run the fluid through such a filter after a rebuild to catch any debris, but advised to soon removed it. His reasoning was much the same as Mike's.

I would not do it personally.

HEAT is the enemy of the fluid/transmission.

I put the dual bypass filter on my engine simply to relocate the filter due to being sideways and above parts. I hate haveing to change a filter that is sideways and driping all over parts. The added benifit is that I do get better filteration.
But the filtration system on these trucks seems to be just fine. I have not heard of any problems with the filtering on the allison.

I guess I am little confused about the need to just have it bypass. If this is the case all you are wanting to do than is relocate the filter to another location, correct. Or is there some other reason for having a bypass.
Once again if location is the reason than you can not beat the location as stock. relocating just adds more places for leaks and pieces to be pulled apart when ground clearance is an issue.

I understand the by-pass for the crankcase, but the tranny already has 2 filters on it!! How many ya need? :cool2:

The purpose of a bypass filter is to filter to a much lower micron rating than what the full flow can do. The full flow has to pass a large volume of oil per minute, thus it can't be restrictive. Therefore, full flow filters can't do much better than about 25 microns. The bypass filter has a very low flow rate, thereby enabling it to achieve the 1 or 2 micron rating. A bypass filter requires a pressure drop across it to function. Most installations need to return the oil to sump so that there is no restriction on the return. When a bypass filter plugs up, it simply quits working. There are two things that are important to address. One is not to exceed the filter rating for input pressure with a pressure regulator, and the other is not to flow so much that you reduce line pressure. A typical rating on a bypass filter is 1 quart per minute flow rate, which will not affect line pressure. If it does, put a needle valve on the inlet line and slow it down. The slower the oil goes through the filter, the better anyway. I have seen some oil analysis results on trannies using bypass filters, and it is pretty impressive. The problem I had with my alli was the fluid I added when I installed the filter. It didn't have the proper friction modifiers, and it caused the converter clutch to make a noise when engaging. It was Amsoil Universal ATF, and is supposed to be okay in an alli, but it didn't work in mine. The Amsoil Torque Drive is what works, and it is supposed to be a copy of Transynd.

First of all; the Ally makes very little contamination. The spin on magnet is there to catch what little metal wear that occurs and the 2 filters do their job extremely well. If your Ally happens to have more than normal contamination you are in trouble and your filters ( all of them) will be severely resricted. What is the point of another filter on the Ally? If the remote filter clogs and does not make any difference in flow, then it is not getting much of anything to filter. Again, what is the point? I suggest taking the money you would have spent on the filter and have a very nice dinner with your wife. Possibly you will get a lot better reward for your effort and butter her up for the next worthwhile mod.:D I rest my case.

mike

The last time I checked, a magnet would only attract ferrous materials. Trannies have alot of non-ferrous materials such as brass, bronze, aluminum, etc. If the bypass filter plugs up and stops flowing, it must have caught something, no? My point was that the bypass filter can plug up and no harm is done to the trans. If the alli doesn't make any contamination, why do you need to change the fluid periodically? Even if the trans doesn't make much metal, you still have fluid oxidation that takes place. A bypass filter strips oxidized particles from the fluid.

I have another question for this topic.
How many trannies (any trannies) have needed repairs due to oil contamintion? This question is mainly for those that do tranny work or have lot of expireance in this field.
Yes, I know there is the burnt oil problem, and I don't think any extra filtration would help with this issue so what other contamination problems would cause tranny problems.

I have another question for this topic.
How many trannies (any trannies) have needed repairs due to oil contamintion? This question is mainly for those that do tranny work or have lot of expireance in this field.
Yes, I know there is the burnt oil problem, and I don't think any extra filtration would help with this issue so what other contamination problems would cause tranny problems.

None.

Extra filters are used in the transmission industry after rebuild only. They are sometimes needed because of metal particles left in the torque converter rebuild process ( stray metal particles) or new bushings that are seating in. or to collect fuzz off the new friction material ( clutches and bands). These filters are removed after a certain break-in time. If your trans continues to have contamination, you have a problem and that trans needs to be back on the bench for evaluation. ( somebody screwed something up, maybe bad part)
mike

Contamination can come in a number of forms. Oxidized oil is by far the most common on a trans. A well cooled trans shouldn't have any real problem with oxidation. When oxidation does happen, it tends to have a snowball effect, ruining the oil rapidly as it builds. Oxidized oil doesn't conduct heat to the cooler well, which compounds the problem. Transmissions are always putting slight amounts of metals from the bushings and thrust washers into the oil, but these usually don't cause a problem unless something is failing, then the metal particals are large enough to stick valves and really cause problems. Sometimes, a cooler will leak antifreeze into the fluid, which is also really bad news. I will admit that a bypass filter isn't as beneficial for a trans as it is an engine, because engines have alot more ways to contaminate oil. On industrial equipment, one interesting benefit of well filtered fluid is much less seal failure. Harvard Corp has alot of filters on off-road dump trucks, loaders, etc, and they really cut down on the amount of maintenance and overhauls. Vehicle transes may not get punished like mining equipment, but anytime oil is kept cleaner, things last longer.

You are reading this stuff from a sales brochure aren't you? Teachers in school used to catch us copying from a book and always failed us.

I am spouting this stuff from 25 years of using Harvard filters and having a friend who is one of their field technicians, not from any brochures. He teaches seminars on using filtration and oil analysis to reduce maintenance costs. He has shown me oil analysis reports of engine oil,transmission fluid, and hydraulic oil before a filter was installed and after, on the same oil. The results are in black and white. I find that the people who most oppose extra filtering are the ones who stand to gain the most when equipment fails.

marcdeluca

You are a wannabe expert with your transmission rebuilder friend and your filter guru. You want so bad to be the expert on the Ally. Little hint here; I am not an expert on this trans yet( working hard to achieve it) and I do not pass along brochure b/s because I wannabe an expert. Filtration is important on any auto trans. How many do you want? Suncoast and ATS do not sell these things nor do I. Why? Who the hell needs them? As far as the vast conspiracy against Allison filtration and my profit; you know wher you can go. Go sell your snake oil somewhere else. Take this filter and shove it.:ro)
mike

Mike,
Why put on extra fuel filters? Isn't the factory stuff good enough? How about coolers? Surely the factory wouldn't cheap out on anything. Take a chill pill.