Bypass

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Bypass

Bypass Filter
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CLICK ON IMAGE for a better view

FINALLY, AFTER LOOKING AT THIS (bmk-15) Bypass Filter kit in my basement for 2 years it became apparent that nobody else was going to come up with a mount that was simple, strong, and inexpensive.� I was going to have to do it myself!

(CLICK HERE IF YOU ARE WONDERING WHY I WANTED BYPASS FILTRATION SO BADLY! Here's an excerpt; ..."How long can an oil fill be run using by-pass filtration? We've heard claims of large (Class 8) diesels going 1 ,000,000 miles on the same fill of oil with no harm done to the engines. We have analyzed oils which have been in service 240,000 miles and found nothing unusual in the analysis, other than higher than average iron and lead (from steel parts and bearings), and these wear accumulations were not intolerably high.

After having run many tens of thousands of diesel engine oil samples, it is our opinion that a by-pass oil filtration system is one of the most important factors in extending oil drains. If you are interested in extended oil drains, we suggest you investigate adding this type of system to your engine ")

So, back to getting the thing mounted in my truck. My brother Todd was invaluable in the bracket development process.� He brainstormed with me, worked on a wooden model, and fabricated the first prototype, (which helped get the measurements right for prototype 2)

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2nd prototype (click on images for full-size pictures)

getting measurements right with prototype 2

After testing the measurements using prototype 2 I decided that it would simplify things to do away with the top bracket that comes with the bypass kit.� Installation is MUCH easier and the whole setup is cleaner looking.� I had 2 prototype 3's fabricated:

the 2 prototype 3's

At this point I posted a link to this page in my signature on the TDR.� A couple of members contacted me, asking to buy prototype 2 and prototype 3.� It's pretty exciting to sell something you've created.�

After about 5000 miles I noticed some wear on the hood liner where the cross brace was pressing it against the front passenger side of the filter mount.��

So with the final product I reduced the height by 1/2".� I contacted the fellow I sold the other prototype 3 to and offered him the final product, but he said he wasn't having a problem with his (or maybe swapping was more trouble that it was worth to save a couple inches of hood liner).��

The pictures below are of prototype 3 which I coated with rubber dip (paint is better).� I don't have pictures of the final product installed, only prototype 3 (see it with filters installed at the top of the page), but the only visible difference is I now paint them black instead of using rubber dip.�

Click on this picture to see all 4 hose connections

You may notice the Stainless Steel Aeroquip lines. Frankly, if I were to do it again, I would NOT bother with the SS lines. This install can be done cleanly enough that the lines won't rub against anything, which was my initial concern. In the early stages I was concerned that the regular lines might rub on something and wear through. The SS lines need to be custom made. If you think about it there are lots of DISADVANTAGES to not being able to make up the lines yourself.

If you are pigheaded about this and ABSOLUTELY INSIST on SS lines, I think you might also want to get a different oil filter adapter like this one made by John Strenkowski: It looks like it would make the line installation easier.

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I can't tell you how nice it was to take an 8,000 (+) mile trip carrying a 3,000 lb camper (see the trip journal and pictures) and not have to worry about changing 3 gallons of expensive, hard to find synthetic oil! They say these trucks take a while to break in, so I guess the truck was still breaking in at the time.

I spent about 40 hours; drove 150 miles, installed and removed the kit 3 times, re-designed and fabricated 5 different units, and dropped about 400 cash developing this (not including the cost of the bypass unit). But the thing is DONE!

If you don't want to waste the time, energy or money reinventing this wheel, let me know.

UPDATE 1/29/2001 I had 10 units made up and they've all been sold at $80 each.�

UPDATE 3/22/2001

I've ordered 10 more (8 are available) - which will be sold 1st come first served. Expect to wait a few months if you don't make this order.

UPDATE 1/14/2004

I still have a few left. They're not painted so I'll let them go for $50 + shipping.

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UPDATED 9/3/2004. 65k and just got another sample report. Truck is finally breaking in and sample came back really good after 11k - recommendation was "send in another sample 11k from now"

see an example of the report I get: http://www.blackstone-labs.com/truck_report_2.html