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Discussion Starter #1 (Edited)
This article was take from the April Special Edition Volume 4, Issue 5 of the AMSOIL Hotwire.

New AMSOIL By-Pass Filtration Kits
AMSOIL Technical Director Dan Peterson discusses upgrades to the BMK kits.


AMSOIL is introducing significant updates to the by-pass filtration systems in May, offering many improvements to the popular BMK kits. AMSOIL Technical Director Dan Peterson sat down with the Hotwire to provide Dealers with a little advance information on the new kits.

Hotwire: Why make changes to the by-pass systems?

Dan Peterson: AMSOIL is committed to continually improving product performance and customer satisfaction in all aspects of our business. Fresh ideas, new concepts and considerable research led to improvements in our by-pass filtration products. The new kits were designed specifically with Ea Filters in mind and include additional features that provide improved performance, increased longevity and easier installation. The design of the original billet mounts restricted our ability to improve the performance of the overall system. The improvements implemented will help AMSOIL Dealers be even more successful in marketing and selling products in this quickly-emerging area.

HW: What are some of the benefits of the new BMK By-Pass Systems?

DP: Several improvements were made. For example, oil flow has been improved throughout the entire system to ensure the precise amount of lubricant is flowing through the by-pass system while simultaneously keeping the engine protected. This is typically measured in terms of flow (gpm) and pressure drop across the system. Larger ports, increased hose diameter and larger fittings were implemented to increase flow, ensuring full compatibility with all OEM oil pressure sensor systems. In addition, extra hose is included with the kits to make sure most tough installations can be completed without having to order more hose to finish the job. Also, new adapters were designed that are much easier to install and provide improved durability to withstand harsh environments.

HW: Do these improvements mean there will be an increase in price?

DP: AMSOIL by-pass systems haven’t risen in price over the past three years while the cost of their components has risen steadily. With these improvements pending, AMSOIL refrained from increasing prices on by-pass kits when price adjustments were made for other products. Four extra feet of larger-diameter hose and upgraded oil filter adapters have combined with the increases in general components to force AMSOIL to adjust pricing. These upgrades improve the quality and performance of the systems, and even with a price increase, AMSOIL by-pass kits are still less expensive than competitors’ by-pass units.

HW: In the old Dual Remote BMK systems, oil flowed into the by-pass filter first, then the full-flow filter. In the new BMK mounts, the opposite is true. Why the change?

DP: The new by-pass systems were designed to more precisely meter the oil through the system via an engineered flow regulator. The flow regulator replaces the spring-loaded valve in the original systems and requires switching the position of the full-flow filter and the by-pass filter.

HW: Everything we’ve discussed has related to the dual remote mounts. Have there been changes to the BMK11 as well?

DP: The BMK11 is manufactured using a new process that is consistent with the design of the dual remote mounts. There were no other changes made to this by-pass system.

HW: Are the new by-pass systems compatible with the AMS-Oiler™ Oil Pre-Charger?

DP: Yes, these systems are designed to run with the AMS-Oiler.

BMK By-Pass Filtration Kits will have new part numbers as well.

Old Number New Number
BMK11 . . . . . . .BMK21 Single Remote By-Pass Kit
BMK12 . . . . . . .BMK22 DUAL-GARD
BMK13 . . . . . . .BMK23 General Use Dual Remote
BMK15 . . . . . . .BMK25 Dodge Cummins Applications
BMK16 . . . . . . .BMK26 Ford 7.3L Power Stroke Applications
BMK17 . . . . . . .BMK27 GM Duramax 6.6L Applications

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For what it's worth, if a person runs the filler cap setup (now BK-1302, was BK1301) with the BMK-21 (was BMK-11), the 90* elbow (BP242) is no longer necessary.
 

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Discussion Starter #5
BMK21, BMK25, and BMK22. The BMK22 Links two AMSOIL By-Pass Filter Elements together for engines with sump capacities greater than 20 quarts.

 

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Chuck, do you feel the BMK 15 (older bypass system) is unsafe for Gen 2 Dodge diesel? My OEM sender is not working, so I installed aftermarket oil pressure gauge, reads 50-60 lbs running down road at 60mph, with single amsoil bypass filter(EaBP100). sender mounted in line going from OEM filter head to bypass filter. reason for asking, I have found bmk 15 for sale. what do you think. new units are so expensive!! thanks.
 

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Discussion Starter #9
No, the BMK15 is perfectly fine on 2nd gen trucks. That's what I'm still running on my '02. And I can hook you up with filters for it.

-Chuck
 

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Discussion Starter #11
Do you have any data that compares AMSOIL to the FS2500. Maybe I am not looking in the right places, but have been unable to find any. Everything is a little lopsided to FS2500 side. Don't like that.

The FS2500 system filters to 2.78 microns at 98.7% efficiency.

The AMSOIL system filters to 2.00 microns at 98.7% efficiency. The AMSOIL system filters better and costs less than the FS system.

The AMSOIL system (from me) costs less than $250. Go price out an FS system that comes with filters, lines, billet return cap, fittings, etc and you'll see how expensive a fully optioned FS kit can get. When you want an exact quote with part numbers on the AMSOIL kits the way I spec them, send me a PM.

AMSOIL has been doing bypass filtration for 26+ years and AMSOIL has been doing Group IV synthetic oil development since 1972. That experience and proven track record speaks volumes. :thumbsup:

-Chuck
 

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Here's some install pictures of the BMK-21. It's well protected and easy to get to when the time comes to change it. I drilled and taped the frame infront of the right front wheel well liner. I used 13" of 3"x1/8" flat iron to mount the filter head to the frame.

Passenger side..


Looking down with the airbox removed..


 

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Pig, now that's just too clean, can you detail my engine compartment like yours? Looks great!
 

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Discussion Starter #14
Here's some install pictures of the BMK-21. It's well protected and easy to get to when the time comes to change it. I drilled and taped the frame infront of the right front wheel well liner. I used 13" of 3"x1/8" flat iron to mount the filter head to the frame.

Passenger side..


Looking down with the airbox removed..


Thanks for posting up the pics! Nice clean install. :thumbsup:

-Chuck
 

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So on the 2nd gen trucks it there any need to change from the old bypass kit to the new one?
 

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BMK25 kit shown here:
What would the cost be delivered to Vancouver, BC
Can you also give me a cost for the straight By-pass Bmk 11? as well.

Thanks,
 

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Discussion Starter #18
The BMK-11 isn't made anymore. It has been replaced by the BMK-21, which is a better flowing system.
The BMK-21 is pictured here on the left.
 

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do these kit's lowwer oil pressure ? and are they recomounded for heavy mod motors , I get more blow by than most and change my oil every 3000km do to that fact . and would like to get it back up to about 5000km . thanks shane
 

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Discussion Starter #20
They do not reduce oil pressure. Bypass means that only a small percentage of your oil pumps throughput is diverted to the 2 micron filter. Oil supply and pressure are virtually unaffected. Heavily modified (over fueled) engines benefit greatly from the 2 micron filtration since your fueling levels soot load the heck out your oil in a very short time. Sounds like an AMSOIL bypass kit would do well for you, Shane.

-Chuck
 
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