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Gun Clinger
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58 Posts
Discussion Starter #1
After doing some reading and checking out other members' homemade by-pass setups, I'm ready to start ordering parts to do my own. I plan on using the Fleetguard or Baldwin filter base but had a question about what orifice size to use. I know some have drilled their own 1/16" (.0625") and others have said the Amsoil kit is around .035". What is the ideal size to run and still have enough oil pressure not to toast the bearings but enough flow through the by-pass to be effective? Also, does it matter what side of the circuit it's on? I'm thinking on the outlet to the by-pass filter instead of the return.

This will be the orifice I use. Middle of the page, orifices with pipe threads. It will give me more piece of mine than making my own.

McMaster-Carr

Also, I was planning on using push-lock hose unless I can find an economic way to make my own stainless steel braided lines. Not quite sure where I'm going to put the filter just yet.

Thanks to all the guinea pigs that have made this look really simple to do on your own.
 

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Gun Clinger
Joined
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58 Posts
Discussion Starter #3
Lorddiesel, I read that site and it's great for how to install the bypass setup but really didn't answer my question.

I read Tarm's bypass post again and some on Bobistheoilguy.com and think I've decided what I'm going to do.

I've ordered the filter housing from Grainger and typed in the Fleetguard number and it was cross referenced to the Baldwin number.

Cummins 3304173S
Baldwin OB1308

I still need to order:
.042" orifice on the outlet
npt to -6AN adapters
-6AN hose end fittings
-6AN braided hose (length to be determined by mounting location)

I need to take several measurements but I think the filter will fit next to the full flow filter with a long bracket. The smallest plate we have at work is 8mm and I should be able to use some scrap to make it. It should be strong enough without gussets. Clearing the driveshaft might be an issue. I want to get the head in first to see if it will in fact fit.

I've looked but can't find any dimensions on the mounting pattern on the filter head? Anybody have them?
 

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Gun Clinger
Joined
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58 Posts
Discussion Starter #4
I have the orifice, filter head and filter. I held the filter head with filter in place and it will be a tight fit but looks like it will fit next to the factory full flow filter. I didn't realize how big a LF777 filter is. Volvo/Mak dealer in Waco has them for $14.55 out the door, I didn't figure that was bad at all.

Question:

Should I use push-lock hose or braided -6AN hose? Put the numbers to each and the push-lock will be $50 cheaper and should put the entire cost close to $100.

Jason
 

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Administrator
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32,949 Posts
I hate working with braided if they aren't already made up
plus the last set I used dired out in a period of 4 yrs ??
 
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