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About ksmithgall

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    New Member


  • Map Location
    Longmont, CO

My Cars

  • Zcars Owned
  • About my Cars
    Just getting started with a project '73 240Z

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  1. Yep that's the plan now. I didn't know if there was any difference in metallurgy with the camshaft that came in it vs. the 280z camshafts
  2. Yes it's a MN head, I'll grab some more pics tomorrow.
  3. It's been a while but here's an update. I ended up trying my luck on a used head and it appears the core was good. I paired NOS intake valves with new Isky springs and retainers. A machine shop then did a valve job and resurfaced the head. Next up is to sort out the camshaft grind. Currently there's a "K" camshaft in there that's a "Japan" casting so I'll see if this is a suitable core to get reground since it's internally oiled and the cam towers don't support external oiling.
  4. Some good suggestions from everyone, thanks. I'll throw a lightened flywheel on the build list. For the time being, my plan is to sort out the head first and then tweak the bottom end as needed to support the head. Despite reading the saga of @madkaw's build thread I think I'll take on a MN 47 head. Seems like a great performance option for the L24 I have now (with bore notching for valve clearance), and would be easy to bolt onto an L28 block down the road for even more power. Let the search for a buildable core begin! A couple further questions based on @madkaw's build. Did you use
  5. I recently picked up a non-running ’73 240Z with 160k miles that was sitting for years. The original engine has been pulled and disassembled and now I’m trying to come up with a rebuild plan for it. I know that the cheapest way to increase power is to buy and swap in an L28, but for right now I want to rebuild and get the original engine running with possibly some performance improvements. Generally I would want to reuse the original block, rods, and crank. Primary use would be street driving with an occasional autocross or track day. I have already acquired some round top SU’s and
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