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Oil System and Piston Ring Innovations

10:40
52:58
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At 10:40 in

The Ford 427 SOHC: Through The Eyes of Legendary Engine Builder Ed Pink (His LAST Engine Build)

What happens here

Ed Pink explains another significant challenge with using a Ford FE block (the basis for the SOHC) with the SOHC heads: the oil passages. The FE block was designed for pushrod engines with lifters, but SOHC heads eliminate lifters, leaving open oil passages. Ed Pink had to devise a way to plug these passages and create new ones to ensure proper oil delivery to the camshaft bearings. He also discusses the concept of "top oiling" (feeding oil directly to the main bearings) and the issue of maintaining oil pressure. The video then transitions to discuss piston rings, specifically the "Dikes" top ring, an innovation from the 1950s that used gas pressure behind the ring to force it against the cylinder wall, providing a better seal than traditional ring tension.

Goal: Describe the necessary oil system modifications and piston ring technology relevant to optimizing the SOHC engine.

Tools and materials

  • Dikes Top Piston Ring Dikes — Improving piston ring seal
  • Ford FE Block Ford — The base engine block requiring modification
  • Gruvin Tool N/A — Creating oil grooves in the main oil gallery
  • Oil Passages N/A — The internal channels for oil delivery

What they say

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up off the ground once it leaves the starting line and you listen to it going down is when you can tell the difference plus one other thing one of the first times we ran the engine one of the in the meats we ran we ran a night race before I changed the cans and you can see it as it's going down the racetrack the side of the engine that didn't look like it was running had to blame up the exhaust pipe this side and the other side real short see the difference yeah that was another quote if you've never seen a Nitro car run at night you miss something in your life that's should you should do when Port did the block they use the same block that they do in Fe and the only change they did is they didn't board the lifter border and they they they were not born out so you didn't have a problem there were some guys that ran the camera engine and they use an Epi block and to do that you've got so many oil passes that you got to plug oh you can't get oil to the lifters because there are no lifters just open hole so you yeah so you got to plug all those you got to plug some of the main oil galleys where it goes no cam in there either right so there's yeah there's tons of leaks you would have to plug and if you get one of them wrong yeah everything does yeah quickly so what the camera has is uh you got the crankshaft and the and the gear on the on the crank and then there's a uh a stub shaft that's about that long it goes in number one and number two Cam Bearing it has a main oil Galley runs a full length of the block and then over each Cam Bearing there's a hole drilled that goes down to the cam bearing then the hole goes this way so it goes to the main bearing so when you get to number four you have to have a way to get the oil that's squirting in there to the uh cylinder head the rocker arms and we took a grooving tool and put a little Groove from the main Galley to it who's supposed to be connected there's a connection then we put the cam bearing in so that way we seal it off behind the camera yeah yeah no it's perfect that makes total sense yeah but those are some of the things we had to do to make the engine move so with that intermediate shaft in there what kept it from what kept it from moving back and forth yeah I was wondering that too does it have a retainer plate or something let me again wow no that's the intermediate shaft and that's the chain that goes around intermediate shaft like a normal timing chain yeah yeah where did this come from this one…

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