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EFV-8 Club Forum / General Ford Discussion / Add on oil filter for 40 Ford

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Posted By Discussion Topic: Add on oil filter for 40 Ford     kubes40 06-05-2012 @ 6:39 AM reply profile send p.m. Senior Posts: 3423 Joined: Oct 2009 Here's a photo of the early and late "parts". 39 Ken 06-05-2012 @ 4:52 AM reply profile send p.m. Member Posts: 380 Joined: Oct 2009 This is not the angled restrictor fitting that Mike writes about but Franz has the straight ones available at their website. http://www.frantzoil.com/catalog/item/4746217/8845153.htm kubes40 06-04-2012 @ 5:08 PM reply profile send p.m. Senior Posts: 3423 Joined: Oct 2009 You are highly unlikely to find the early type return line and fittings. Very rare. The later type come available on occasion. I may have some NOS. If interested, PM me. I will try to get a couple of pics posted tomorrow of the installation. Supereal offered very sound advice. The filters did little good but catch the occasional rock flowing through the system. If you insist on having a filter, it is imperative you reduce the flow on the pressure side. Solder the fitting as suggested and drill a .055" - .060" hole. I did mention the restricted fitting in my initial post (...special angled brass reducing elbow fitting, part number 01A 18669...) but in retrospect, I was not clear. Sorry about that. Mike This message was edited by kubes40 on 6-4-12 @ 5:20 PM bwhitworth 06-04-2012 @ 4:56 PM reply profile send p.m. Member Posts: 59 Joined: Nov 2010 kubes40, thanks for the detailed reply. Where can I get the hollow bolts for either location? Pictures of the installation would be nice? Thanks again. supereal 06-04-2012 @ 2:26 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 Our '40 guru has given you the whole story. While an oil filter seems like a good choice, remember that it is not a "full flow" filter of the type used today. It funcions as a sort of bypass from the oil pump to the engine, and there must be a restrictor in the filter output to prevent oil starvation. Unless I missed it, I don't think Mike included it in his post. We make the restrictor by soldering a fitting shut, then drilling a 1/16" hole in the plug. Probably the biggest advantage of the filter is having an additional quart of oil in the system, instead of the correct four quart fill without a filter. You will get about the same advantage as filltering by making frequent oil changes. kubes40 06-04-2012 @ 1:37 PM reply profile send p.m. Senior Posts: 3423 Joined: Oct 2009 It appears you are trying to use the post war routing of the return line. Below is the proper 40 Ford routing(s). There was an early routing and late routing. I can provide photos and more details of the proper housing, etc. if desired. Mike Kubarth The inlet to the housing was on the rear (towards the cowl) and near the bottom. This threaded hole received a 90º brass fitting, part number 01A 18672 for the inlet hose. Directly below that fitting was a decal that simply said “INLET”. At the center and very bottom of the housing was a threaded hole that received an 80° brass fitting. This hole and fitting were used, along with two different hoses and routings, to return filtered oil to the engine. Just to the front of this bottom fitting was yet another threaded hole. This drain hole was fitted with a brass hex head plug. The inlet (pressure) and outlet (return) hoses were made from an oil resistant compound and covered with a black lacquered braided cloth with a rough outside finish. The AC Spark Plug Company supplied these hoses to Ford. All fittings, with one exception, were brass swivel type. The exception was the late production return hose which had a “banjo” fitting on one end. Pressure Hose Routing: While there were two different routings of the oil return hose (described below), there was but one routing for the pressure hose. The pressure hose threaded into a special angled brass reducing elbow fitting, part number 01A 18669. This fitting was threaded into the horizontal hole at the back of the engine block near the oil pressure sending unit. From there the hose was routed forward near the bottom row of cylinder head studs and attached to the inlet fitting on the right side of the filter housing. A cadmium plated clamp, which was placed beneath the cylinder head stud between and just below cylinders number 7 and number 8, held this hose in place. The first routing from filter to block is as follows: 1) The hose attached to the angled fitting at the very bottom and center of the filter housing. The angle between the female and male threads of this fitting was a little less than 90 degrees so that the hose, which was threaded into the fitting, pointed slightly upward as it left the filter housing. Its initial path was parallel to the front axle underneath. 2) The hose passed through the hole in the rear of the filter housing bracket. A rubber grommet in this hole insulated the hose against abrasion. 3) The hose turned toward the fuel pump and was on top of the left spark plug wire conduit. 4) A cadmium plated clamp held the hose to the left spark plug wire conduit. 5) The line terminated by threading into a special bolt/fitting that had replaced the left fuel pump mounting bolt. This first routing was the more common of the two since it was used from the beginning of 1940 production until the very end of April, 1940. Second Routing of the Return Hose The second routing from filter to block is as follows: 1) The hose attached to the angled fitting at the very bottom and center of the filter housing. The angle between the female and male threads of this fitting was a little less than 90 degrees so that the hose, which was threaded into the fitting, pointed slightly upward as it left the filter housing. Its initial path was parallel to the front axle underneath. 2) The hose passed through the hole in the rear of the filter housing bracket. A rubber grommet in this hole insulated the hose against abrasion. 3) The hose turned toward the radiator and was on top of the left spark plug wire conduit. 4) The hose turned right. It passed through a cadmium plated clamp, placed beneath the washers of the generator mounting stud, that secured the hose in place. 5) The hose ended with a “banjo” fitting at the base of the distributor. A special hollow bolt replaced the lower right distributor housing bolt. With a copper gasket placed on each side of the “banjo” fitting, a leak free seal was attained. This second routing took effect at the very beginning of May, 1940. bwhitworth 06-04-2012 @ 10:24 AM reply profile send p.m. Member Posts: 59 Joined: Nov 2010 I want to add a period correct oil filter to my flat head V8. I know the outlet from the block where the oil pressure sending unit is mounted. The outlet from the filter is to be routed through the flange where the dip stick passes into the pan. The current dip stick flange does not have the required pipe fitting. MAC has a fitting for replacement of the stock fitting that is rivited to the oil pan. To remove the old fitting and install the new fitting would require removing the oil pan. Question: I have seen in the past special bolts that are drilled to allow the oil to pass back to the oil pan. Where could I find the special bolts for sale? What routing of the return works best? Thanks

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