240Z Project

240Z: Cylinder head and lots of stuff off :)

Today i got really a lot done within probably one hour. Despite the fact i’ve never touched an engine before im really happy with todays’ results:
1) Removed the cam gear nut:

and the cam gear:

2) finally i was able to remove the cylinder head:

I’m no specialist on this, but i feel the pistons look quite a bit “burnt” but not really damaged or something. Also it doesn’t look like it has been honed or something. Looks quite original inside:

3) Same thing on the cylinder head side:

4) Then removed the cylinder head gasket. all of the gaskets feel really brittly and shit:

also you can see more of that nasty old water-shit inside the cooling channels. need to figure out how i can clean it. maybe some ultrasonic-bath or something:

5) then removed what must be the oil pump:

6) the crank seal

7) and finally the timing cover:

8) Chain & Chain tensioner removed:

9) view on the bottom-end:

10) and finally removed that “primary oil filter” and cleand all from old gasket-pieces, grease, oil and stuff:

3 Comments

  • Torby

    The cylinders look to be in very good condition, but generally speaking, the L24s are very solid. When you can see the factory hone pattern, then you know it’s not badly worn. It’s worth having the bores checked professionally, though. Nice work again, looking forward to more updates!

  • Cassio

    Ya engine looks really great. Even if you plan on doing a full rebuild starting with a good motor always makes things easier. I usually always bore to the next size and rehone the block for new pistons. However any good manual should have instructions to check for roundness in the cylinders. Keep it up!

  • JDMjunkies.ch

    Thanks a lot for your input and comments guys, really apreciate to have some nice followers 😀

    I will have the engine totally rebuilt and upgraded but not ony my own because i have no idea when it’s about engines 😀 Mr. Petitjean from zcarracingteam switzerland will be the guy to do this. if you check their website you can see they have some pretty hardcore classic Z’s for hillclimb racing and he’s the guy to ask if you have a classic datsun here in switzerland so i’m sure the engine is in better hands there, then here with me 😀 Also i plan on rebuilding the chassis first, because an engine without a chassis doesn’t make any sense to me. And if you ask yourself i just openend the engine to see what i have to deal with so i leave it like it is until i send it out to the engine builder, but at least i knowh what parts have to be replaced now 🙂
    thakns again, i’m watching your progress too guys 🙂

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