Extreme Engine Tech: Building the Ultimate K24 Part 3- The Finished Goods!

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The nuts are then torqued down to spec.
Next the cams and rocker assemblies are lowered into place. One thing we enjoy about the K Motor is the way that the valvetrain is all contained as a unit which makes working on it a snap.
All of the cam tower bolts are torqued down.  Care needs to be taken here so you don’t snap a camshaft.
Everything is torqued down and ready to go.
Next the timing gears, chain dampers and intake cam VTC unit are installed and torqued down. The oil pump drive chain and dampers are also installed at this point.  Since we took out the balance shafts, lining up the timing marks on the oil pump drive chain is probably not as critical.
The gold links on the timing chain are lined up with the timing marks on the timing chain sprockets.

12 comments

  1. On part 3 page 5 timing chain is fitted wrong. Timing marks are not correctly aligned and timing is not set properly . Little dots on cam gears should be between gold chain rings. Dashes on intake and exhaust cam gear should point to each other!

    1. We were just doing a dummy fit up to check the tensioner so of course, we didn’t assemble the engine that way. Good catch though!

  2. I appreciate the time, effort and great photos in this article guys, but there are some serious holes in the story here that need to be addressed. RBB valve cover to R40 timing cover does not seal. PRB non balance shafted oil pump conversion requires blocking the old feed port on the block beneath the oilpan. Youve used the incorrect chain tensioner for the r40 block as the old steel bodied tensioners have a slightly different oil port location. Moroso pan doesnt have provisions for the lower torque mount. Although you used aftermarket pistons maybe some measurements on a stock piston compression height and how that clears with these heads. Maybe spotlighting some of these details maybe help to better guide your reader base in tackling some of the hurtles of the R40 4-port conversion. Either way, great content and thanks for your contribution to our industry.

    1. Its been a long time since we wrote the article but I am pretty sure we covered how to do that stuff in the other parts of the series. I know we did the balance shaft and cover stuff. Pretty sure we did the tensioner in other parts. I remember getting the new tensioner.

      1. If there is a revised article beyond this “part 3” that covers these issues, I wasnt able to find it. Is it under this engine build article or something different?

        1. I think there was up to a part 5. You know what, I think I covered this stuff more in our NA build. I am getting things confused. It’s been years!

  3. Great article, Im wondering what engine wiring harness would be used for this build to go back in a 2012 civic si coupe?
    TIA
    Steve

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