Ater changing the stock filter on my 2006 2500HD for the second time I'd gotten frustrated with it. The factory Delco filter leaves a little to be desired in filtration and cost compared to the 1R-0750 Cat filter that I get at employee discount for $11.
I will add that I already have a lift pump and wouldn't suggest this mod without one as there is no longer a bleed screw on the filter. In colder climates the added filtration of the CAT 2 micron filter will put added strain on the CP3.
Like a lot of people I installed the Nicktane CAT filter adapter on my truck. I used it this way for about a year until I was sick of the adapter coming off every time I changed he filter regardless of how tight I had it on there.
In my quest for the cheaper solution I found this=
http://www.fleetfilter.com/filter/24770.html
And after aquiring about 3' of 1/2" fuel line and two 1/2"NPT X 1/2" hose barbs my total was up to around $40.
Here is the factory base with the cat filter adapter for the last time in its home
The new base with its fittings and fuel line
Custom 1/2" to 1/8" NPT reducer I made for my fuel pressure gauge
For the next step I matched up the old filter base to the new base to see how close the bolt holes would be. All I had to do was drill one new hole in the base (small hole between the bottom two in the picture) and it would simply bolt in place of the original!
Next step was to bolt the base to the original filters mount. All I did here was use a pair of 3/8 grade 8 bolts, since this pic was taken I have swapped out the nuts and lock washers for flange lock nuts. The picture doesn't show it well but the base of the filter clears the harnesses on the right cylinder bank well and is actually farther up and away from the exhaust than having the adapter on the factory filter base. (My fuel pressure sensor can be seen poking out the rear of the base)
Next up is plumbing the lines, the inlet and outlet of the Napa base match up with the factory filters so I simply routed the new lines as the factory ones were routed.
After this all that was left was to reinstall the intake tubing and bleed the system. I have the regulator on my lift pump set at 13 psi which is over the 12 psi most people say the factory base can hold before leaking. After the install my fuel supply pressure doesn't drop off near as much due to the Napa filter base not being nearly as restrictive as the factory unit was. I did lose my fuel heater and water in fuel sensor but even living in central Iowa I haven't had an issue yet operating the truck this way during the cold winter months.
Hopefully this can help someone looking to run CAT filters on their truck do it cheaper than I did at first! After having this on for well over a year it has performed beautifully and changing out the filters are a breeze.
I will add that I already have a lift pump and wouldn't suggest this mod without one as there is no longer a bleed screw on the filter. In colder climates the added filtration of the CAT 2 micron filter will put added strain on the CP3.
Like a lot of people I installed the Nicktane CAT filter adapter on my truck. I used it this way for about a year until I was sick of the adapter coming off every time I changed he filter regardless of how tight I had it on there.
In my quest for the cheaper solution I found this=
http://www.fleetfilter.com/filter/24770.html
And after aquiring about 3' of 1/2" fuel line and two 1/2"NPT X 1/2" hose barbs my total was up to around $40.
Here is the factory base with the cat filter adapter for the last time in its home
The new base with its fittings and fuel line
Custom 1/2" to 1/8" NPT reducer I made for my fuel pressure gauge
For the next step I matched up the old filter base to the new base to see how close the bolt holes would be. All I had to do was drill one new hole in the base (small hole between the bottom two in the picture) and it would simply bolt in place of the original!
Next step was to bolt the base to the original filters mount. All I did here was use a pair of 3/8 grade 8 bolts, since this pic was taken I have swapped out the nuts and lock washers for flange lock nuts. The picture doesn't show it well but the base of the filter clears the harnesses on the right cylinder bank well and is actually farther up and away from the exhaust than having the adapter on the factory filter base. (My fuel pressure sensor can be seen poking out the rear of the base)
Next up is plumbing the lines, the inlet and outlet of the Napa base match up with the factory filters so I simply routed the new lines as the factory ones were routed.
After this all that was left was to reinstall the intake tubing and bleed the system. I have the regulator on my lift pump set at 13 psi which is over the 12 psi most people say the factory base can hold before leaking. After the install my fuel supply pressure doesn't drop off near as much due to the Napa filter base not being nearly as restrictive as the factory unit was. I did lose my fuel heater and water in fuel sensor but even living in central Iowa I haven't had an issue yet operating the truck this way during the cold winter months.
Hopefully this can help someone looking to run CAT filters on their truck do it cheaper than I did at first! After having this on for well over a year it has performed beautifully and changing out the filters are a breeze.
I did a similar mod on my 6.2 truck, but I used a stanadyne filter housing. 
