Amsoil BMK-25 By-Pass Filter Mount

[TBusclas]

Just wanted to share with all of you contemplating the Amsoil Dual By-Pass filter system where I was finally able to mount it. I had this system for a couple of months and read many posts and was almost ready to send it back and just go with the single by pass. Read all the horror stories about the noise from the oil pump and just did not like putting the filters under the truck on the frame. There is plenty of room to change filters and the only other modification was I had to bend the lifting eye in toward the motor with a ball peen hammer to clear my bracket. The only changes to the system itself were the Aeroquip 90 degree elbows coming of the filter head and changing the petcock Amsoil sent to a Parker petcock part number DC607-4 that had three eights pipe thread, thus ridding myself of the bushing they sent. The top brace is three sixteenths by one half by app. 19" inches long. It was bent and drilled after I mounted the filter head bracket. I used the original bolt that holds the dip stick tube. I used flat washers to take up the space between the filter head and the bracket. I built new spacers on a lathe for the manifold bolts but you could cut the old spacers off. Probably want use a lathe here also to keep the ends flat so everything torques back down correctly. Any questions feel free to ask. I also have a few more pictures I can post later. I have included a rough drawing with all my measurements for any one who wants to do the same. Tom

 

[JohnBoy5]

thats pretty nice! my only conser in the heating and cooling of the exhause manifold. these trucks have a big problem with the manifold moving at a different rate then the head. do you think that plate could cause it to break a bolt off in the head? maybe a small modification of some sort on one of the holes on you bracket that will let it move some when the engine warms up... just some food for thought. nice work!

 

[amsoilman]

One problem you may see, is your oil pressure gauge may or may not indicate oil pressure, or a pressure drop on occasion. Due to the system Dodge uses to report oil pressure to the gauge, this can and does happen on 2004 and newer Dodge/Cummins applications, using the BMK-25 By-Pass system. This is why Amsoil Inc. does not recommend using the BMK-25(Dual-Remote) on this application, but does recommed the BMK-21 (Single Remote) on 2004 and newer Dodge/Cummins applications.



The Duel Remote(BMK-25) uses two 1/2" ID hoses that flow the oil to and from the remote unit(BMK-25) at a high flow rate. The (BMK-21)single remote uses two 1/4" ID hoses that flow the oil to and from the remote unit(BMK-21 Single remote) at a slow flow rate of approximately 6 Qts/Minute.

Keep in mind, this phenominum may or may not happen, but Amsoil Inc. does not recommend the BMK-25 on your application.

 

[TBusclas]

Don't think it will be a problem. All holes are drilled to slightly larger diameter than what was in the original spacers. Yes the outer end of the bolts are essentially anchored but the bolts would not move anyway as they are anchored where they screw into the head. If the manifold does move it will contact the bolt at the same point no matter what. I can't see where any problems will be compounded. Thanks, Tom

 

[TBusclas]

I have ran 15-40 Amsoil for the last 7500 miles. I did contact Amsoil about this unit and they said it would work fine. I have seen NO changes in oil pressure since installation. When truck is started the gauge reads pressure almost instantaneously and am not seeing any higher pressures with the colder weather. With petroleum based oil it would be several seconds before the gauge would start registering pressure and when hot would also loose more pressure. I have about 500 miles on the system now and really don't see anything wrong anywhere. I do understand what you are saying about the flow rate of the two sizes of hose but the oil that actually goes through the bypass filter is metered through a small orifice and there by you are not actually changing the flow through the full flow filter any more than you would by tapping off the top of the filter for the single by-pass. IMHO, Tom

 

[amsoilman]

I have ran 15-40 Amsoil for the last 7500 miles. I did contact Amsoil about this unit and they said it would work fine. I have seen NO changes in oil pressure since installation. When truck is started the gauge reads pressure almost instantaneously and am not seeing any higher pressures with the colder weather. With petroleum based oil it would be several seconds before the gauge would start registering pressure and when hot would also loose more pressure. I have about 500 miles on the system now and really don't see anything wrong anywhere. I do understand what you are saying about the flow rate of the two sizes of hose but the oil that actually goes through the bypass filter is metered through a small orifice and there by you are not actually changing the flow through the full flow filter any more than you would by tapping off the top of the filter for the single by-pass. IMHO, Tom

I do understand the By-Pass element is "metered" through a small oriface, but it is the "Full-Flow" filter element that gets the high flow rate, which is where the problem can occure with the oil pressure system on your application.

With the BMK-21(Single Remote) the Full-Flow filter element is left on the engine, and the By-Pass filter element is remotely located, and uses the 1/4"ID hoses to feed and return the oil to the engine at the slow rate of flow of 5-6 Qts/Minute.

You may not have any problem at all, but be aware, what i informed you of, it can happen.

BTW, your installation looks very nice!

 

[CDonaldson]

One problem you may see, is your oil pressure gauge may or may not indicate oil pressure, or a pressure drop on occasion. Due to the system Dodge uses to report oil pressure to the gauge, this can and does happen on 2004 and newer Dodge/Cummins applications, using the BMK-25 By-Pass system. This is why Amsoil Inc. does not recommend using the BMK-25(Dual-Remote) on this application, but does recommed the BMK-21 (Single Remote) on 2004 and newer Dodge/Cummins applications.



The Duel Remote(BMK-25) uses two 1/2" ID hoses that flow the oil to and from the remote unit(BMK-25) at a high flow rate. The (BMK-21)single remote uses two 1/4" ID hoses that flow the oil to and from the remote unit(BMK-21 Single remote) at a slow flow rate of approximately 6 Qts/Minute.

Keep in mind, this phenominum may or may not happen, but Amsoil Inc. does not recommend the BMK-25 on your application.

Interesting . . .



When you go to AMSOIL'S website, and you click on THEIR TAB - "By-Pass", which takes you to AMSOIL By-Pass Filters & Mounts, the 5th item down the page specifies "Dogde Cummins Oil By-Pass Unit" it's product code is "BMK-25".



No where does AMSOIL discuss possible problems with oil pressure issues . . .



When you check AMSOIL's "By-Pass Filtration Applications Guide, under filtration kit, you will see BMK-25, and it also specifies "Dodge with Cummins Engine".



Of course, this is a remote mount filtration system, it does not use the recommended filter that Dodge uses in the stock filter mount, the by-pass head goes where the stock filter would have gone. Just for clarity to those thinking about installing this remote mount kit, this kit uses the AMSOIL EaBP100 bypass filter, and the Amsoil EaO26 full flow filter.



I am running the BMK-25 remote mount fitration system on my truck. I have never seen any low pressure issues, not have I seen any fluctuations in pressure, my pressure is rock solid.



The BMK-21 is now suggested for a single, prior to this recommendation they suggested using the BMK-11. As I understand it, the BMK-11 is no longer available, but it was a good by-pass filter used on our trucks without any problems.







CD

 

[amsoilman]

Interesting . . .



When you go to AMSOIL'S website, and you click on THEIR TAB - "By-Pass", which takes you to AMSOIL By-Pass Filters & Mounts, the 5th item down the page specifies "Dogde Cummins Oil By-Pass Unit" it's product code is "BMK-25".



No where does AMSOIL discuss possible problems with oil pressure issues . . .



When you check AMSOIL's "By-Pass Filtration Applications Guide, under filtration kit, you will see BMK-25, and it also specifies "Dodge with Cummins Engine".



Of course, this is a remote mount filtration system, it does not use the recommended filter that Dodge uses in the stock filter mount, the by-pass head goes where the stock filter would have gone. Just for clarity to those thinking about installing this remote mount kit, this kit uses the AMSOIL EaBP100 bypass filter, and the Amsoil EaO26 full flow filter.



I am running the BMK-25 remote mount fitration system on my truck. I have never seen any low pressure issues, not have I seen any fluctuations in pressure, my pressure is rock solid.



The BMK-21 is now suggested for a single, prior to this recommendation they suggested using the BMK-11. As I understand it, the BMK-11 is no longer available, but it was a good by-pass filter used on our trucks without any problems.







CD

Everthing you say here is correct! FYI, the BMK-11 Mount was replaced with the BMK-21 Mount, as the mounts were re-designed.

 

[AH64ID]

Install looks good, but I think I would have gone on the frame for a couple of reasons. There is a lot of heat coming off the manifold, and one of the side effects to a remote mount bypass is additional oil cooling, where here you are adding more heat to the engine bay and absorbing exhaust heat.

Also, adding the filters above the OE filter point can cause drain-back which is believed to be what causes the majorty of the no oil pressure at startup with the dual setup on the 03+ trucks. The BMK-15 had more issues, and the BMK-25 is supposed to solve those issues, but I have read about more than one truck with issues and the BMK-25. So be advised you may get zero oil pressure on startups. The ECM has to see 0 oil psi for 30 seconds before it will change the gauge to 0 and set a check gauges light (since the engine only has a 6psi switch, no sender the oil psi gauge is an algorithm).

I do hope it works for you, but wanted you to be aware of possible issues.

I am running the BMK-25 remote mount fitration system on my truck. I have never seen any low pressure issues, not have I seen any fluctuations in pressure, my pressure is rock solid.

I don't recall if you have an aux oil psi gauge or not, but if you don't there is no way to know the effect of any add on filters to your oil psi, unless the oil pressure on your enigne is below 6 psi you will never know a difference.

Everything you say here is correct! FYI, the BMK-11 Mount was replaced with the BMK-21 Mount, as the mounts were re-designed.

Its a shame, as the BMK-11 was a much nicer piece, albeit more money. . but you get what you pay for.

 

[CUMMINZ]

I had considered a mount on the right side of the engine but that side is over 100 degrees hotter than the left side. I stayed away from the turbo and exhaust.

 

[AH64ID]

I think it depends on where you put it in on the pass side, I highly doubt its 100* hotter outside the frame rail, and there isn't room inside the frame rail due to the exhaust.

 

[TBusclas]

Since the comment was made about under hood temps do any of you have temp guage installed in a stock system? I think just for the fun of finding out I will probably install a remote temp gauge in place of my sample drain valve and see what actual oil temps are at various operating speeds. Would like to have the temps from a stock oil system for comparison and be able to post here for all.

 

[CDonaldson]

You could T into the drain location and have both the sender and the drain.



CD

 

[WHazelwood]

I have esentially the same set up and the only time I've ever seen the oil pressure act wierd is when parking on an incline with the nose up. I'll get a oil pressue chime for about 5 sec. and then it's OK. I checked with a real oil pressue guage and the oil pressure is about 15psig for those 5 sec. but then it goes up to about 55psig. I've had no problems other than water pump at 95K.

 

[AH64ID]

How has the setup treated you the last month?

I have esentially the same set up and the only time I've ever seen the oil pressure act wierd is when parking on an incline with the nose up. I'll get a oil pressue chime for about 5 sec. and then it's OK. I checked with a real oil pressue guage and the oil pressure is about 15psig for those 5 sec. but then it goes up to about 55psig. I've had no problems other than water pump at 95K.

Where are you checking pressure? The psi switch is 6psi, so 15 should trip it and the ECM act normal.

 

[hERKY130]

I've had the BMK-25 setup for about 5000 miles now and I've only had the 5 sec check gauges light once. No fluctuation in pressure and seems to be running fine. I plan on covering the filters with a hinged sheet metal guard. The heat resistant wrapping works well. The only issue with the install I had was tucking the hoses in between the cab and rails. I worry they might be pinched when hitting bumps, but so far so good.

 

[AH64ID]

IMHO, once every 5K miles is too much. IIRC it takes 30 seconds of zero oil pressure for the light to come on, thats way too long. You will never see a difference on the dash on the gauge as its fake, unless you go 30 seconds without pressure it wont show a change, then it just drops.

 

[JohnBoy5]

Does anyone know how well this filter setup might work with a cummins making say 600 hp and twin turbos? Would there be an issue with soot? Also i know this is bad but my truck gets driven short distances and from what i know most fuel deletion occurs when the engine is cold so would that be another issue?

 

[amsoilman]

Does anyone know how well this filter setup might work with a cummins making say 600 hp and twin turbos? Would there be an issue with soot? Also i know this is bad but my truck gets driven short distances and from what i know most fuel deletion occurs when the engine is cold so would that be another issue?

Amsoil has designed a HIGH-EFFICIENCY BY-PASS FILTER ELEMENT that is also a soot removal device. The amsoil EaBP filters use a synthetic/cellulose sandwitched media. The inner layer of the element is composed of a highly efficient cellulose media covered with a full-synthetic media outer layer. These filters remove 39 percent of soot contaminants less than one micron. Soot removal efficiency can increase approximately 10-14 percent when the EaBP filters are used in conjunction with a "standard" Full0Flow filter, even higher in conjunction with the Ea Oil Filters or Donaldson Filters.



So to answer your question regarding any issues with soot, I think this would help to reduce your concerns with soot.

 

[JohnBoy5]

what about fuel contamination? from the short trips i take i feel like the every 2500 i change it with the rotella 15-40 might be better then letting diesel fuel set in there for a long time... . is there anything in the oil to help with that or protect the parts from the diesel fuel?