Embossed PF 25 oil filters - my solution to $900 oil filters.

[firstgenaddict]

I pulled a fiberglass mold from the bottom and then made a relief and bonded it to the bottom of std WIX oil filter.
I have not finish painted it as of yet.

[169INDY]

Neat Idea

[firstgenaddict]

I have been wanting to do it for a while but didn't want to pay 600-900 for a filter to pull a mold from - I ended up with a NOS filter for about $100 6 months or so ago and now wanting one for a 69, recently got started on the project.
I can't believe someone has not done this previously.

[169INDY]

What about Decal plans? Computer and graphics with printed cut mask for paint or decal

[firstgenaddict]

I have the decal that is available (RED and BLUE) however I am probably going to do the black AC logo like Lloyd did on the filter he made.

[67conv6cyl]

$900 each wow….I thought I paid to much for the 5 nos pf 25’s along with 4 Pf 29’s for $150 a few years ago, I guess I did okay after all!
 

[Dave69x33]

Very cool idea firstgenaddict!

Love to see this creativity among those of us in the hobby with enough skilled (or obsession...lol) to do restoration projects like this!

I converted my NOS date coded voltage regulator to electronic and hid the conversion under the voltage regulator lid. Tried everything to try and prevent the regulator from overcharging charging the battery, gave up and converted it.  I also designed and had made another "device" to allow me to run a full roller mechanical cam (current cam technology) and keep the cam float fore and aft to spec yet keep my original DZ 302 timing chain cover.

One other area on the '69 1st Gens I am looking into are RS headlight conversion kits available from Detroit Speed.  They did a great job engineering their kit but the doors open/close too fast compared to the speed of the original vacuum actuated head light doors.   Plus, I do not want to cut another 1.5" grommet hole in my firewall to run the wiring harness between the headlight switch and the electric actuators.  I want to try an retain the proper vacuum hose location and grommet.  My original vacuum relay looks very nice but no longer functions correctly, and my (2) actuators leak and will not pull sufficient vacuum to open and close the doors.  Replacing these two RS vacuum components adds up to about 35% - 50% of the cost of Detroit Speed conversion kit.

Fun stuff!

[firstgenaddict]

We ran a solid roller with the original timing cover on the black RS/Z. It had a button though.

[Dave69x33]

When I build my motor with the solid roller CS XR274 R-10 series #12-770-8 from Comp Cams.  I mocked up the build, included a cam button, and tested the fore and aft movement of the cam in the block. The original sheet metal timing chain cover has a fair amount of flex.  The helix angle on distributor gear tends to push the cam forward, so the concern was the stock cover would not limit the cam movement to the recommended 0.008" - 0.012" by Comp Cams. I also invested a fair amount in the valve train as long as it fit under the stock valve covers.  I have been very pleased with the cam.

[CantRepeat]

When I build my motor with the solid roller CS XR274 R-10 series #12-770-8 from Comp Cams.  I mocked up the build, included a cam button, and tested the fore and aft movement of the cam in the block. The original sheet metal timing chain cover has a fair amount of flex.  The helix angle on distributor gear tends to push the cam forward, so the concern was the stock cover would not limit the cam movement to the recommended 0.008" - 0.012" by Comp Cams. I also invested a fair amount in the valve train as long as it fit under the stock valve covers.  I have been very pleased with the cam.

What rocker arms did you go with?

[firstgenaddict]

Under non dripper 69 covers with a felpro thick and thin gasket glue together you can run aluminum needle bearing roller rockers with a .636 lift solid roller... 

with a coat of white paint

[68camaroz28]

Well done James as always.... When I reviewed oil filters several years ago during our 68 restoration I found NCRS after their review and research could not substantiate that the embossed filter was exclusively used and they accept either PF-25. But love what you did and again well done James.

[firstgenaddict]

If not mistaken 1968 and early 1969 model year would have had a PF 29 filter, which were not embossed, which is odd as the 1967-1968 version of the AC PF24 (pontiac filter) is embossed.

In the NCRS a 69 and 70 without an embossed filter will lose 5 points for configuration.
The reproduction AC PF 25 with the dime sized circular impression on the bottom will lose 5 points for configuration for 1971-1977.
to be correct for 71-77 The circular impression on the bottom of the filter can needs to be about the size of a silver dollar -
as shown in the center of the mold bottom without the embossing - the center circle size is easily larger than a dime. 

[169INDY]

Repop samples.
(I think these are what James is referencing above)^^

[firstgenaddict]

Thank you JIM, exactly what I was referencing.

The small impressed circle loses configuration points for 71-77.
The large one is correct, but to get 100% of the points the top crimped band should be bare steel/same with the embossed version top crimp band is plain steel no paint.

[ric1969]

You keep coming up with good work James well done.

[68camaroz28]

If not mistaken 1968 and early 1969 model year would have had a PF 29 filter, which were not embossed, which is odd as the 1967-1968 version of the AC PF24 (pontiac filter) is embossed.

In the NCRS a 69 and 70 without an embossed filter will lose 5 points for configuration.
The reproduction AC PF 25 with the dime sized circular impression on the bottom will lose 5 points for configuration for 1971-1977.
to be correct for 71-77 The circular impression on the bottom of the filter can needs to be about the size of a silver dollar -
as shown in the center of the mold bottom without the embossing - the center circle size is easily larger than a dime. 

Yes ours as shown in build thread used a pf-29 for 68. My only reference was that the pf-25 embossed filter back 6 or so years ago ncrs could not conclude it was primarily used so embossed or not was accepted for pf-25 equipped corvettes.

[Dave69x33]

firstgenaddict,

Again, nice work!


CantRepeat,

Sorry for the delayed response.  I worked with a local cylinder head specialist to do my head work.  He formerly worked at Indy Cylinder Head, and while he worked for the Jegs Pro Stock Team, help design the Hemi Pro-Stock Heads.  He recommended the cam and the following Comp Cams valve train components based on what I was after with my motor - close to stock but upgraded.
 - Rockers: #1804-16 CS 1.5 ratio 7/16" Ultra Pro Mag XD
 - Springs: #977-16
 - Roller Lifters: #818-16 CS Supper
 - Push Rods:  don't recall the item number but ordered custom length after mock up and using an adjustable rod to get the proper contact pattern across
   the top of the valve stem.
 - The build required machining the poly-lock rocker arm nuts about 0.080" to gain the approx. 0.100" clearance under the stock valve covers
 - Also required a thicker valve cover gasket to gain the clearance noted above   

BTW...You can search on YouTube for sound bites with Comp Cams CS XR274 R10 to hear it in my Z28.  I tried unsuccessfully to hear what it would sound like in a performance small block Chevrolet before I purchased it, but took the chance with this cam based on the recommendation I received.  My goal was to retain the vintage solid lifter sound but with an upgrade to modern cam technology and performance.  The fact I was retaining my stock exhaust manifolds and exhaust system also played a part on my cam selection.

[David K]

I’ll take 5 of those custom oil filters please. Those $900 ones aren’t good enough for my 6 cylinder engine.

[firstgenaddict]

I’ll take 5 of those custom oil filters please. Those $900 ones aren’t good enough for my 6 cylinder engine.

At my labor rate it works out to about $300 in labor PER FILTER.

[Charley PHX]

The molded end cap is pure genius! NICE WORK!

[Edgemontvillage]

James, you may have understated the rising cost of these filters judging by this recent (July 17. 2022) eBay sale: