L28 full rebuild assembly

[Zed Head]

Looks like you're on the right path.  Good luck.  

[LeonV]

You can also take this time to measure piston deck height. Put a straight edge on the deck, turn the crank until the piston rests on the straight edge, zero the indicator and go all the way up. Place the indicator along the wrist pin and the straight edge intersecting the wrist pin.

[Av8ferg]

Thanks for the previous advice guys. Made progress this week despite a few minor setbacks.
I’ve installed the head, timing chain, timing chain cover and water pump.
Here are pics from today.




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[heyitsrama]

Looks great! is the block painted?

[Av8ferg]

Yes, the block is painted. DE1651 Cast Coat Iron from Duplicolor. I didn’t really like the look of the Datsun turquoise blue, I thought it clashed with the red engine compartment. Blasphemy to some of the Datsun hardliners but it’s a 77, not a series 1 collector car. I really like the look of this block color. I have a red powder coated valve cover and I think the colors go well together.




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[SteveE]

I agree!   Looks good

[Captain Obvious]

Agreed Looks great!

Now that you have the timing chain on, you can turn the motor over all the way. Did you spin it a couple times just to watch the valves open and close?

[240260280]

Basically a Mercedes Engine so their block colours are reasonable.

[Av8ferg]

Hey guys a couple questions. I’ve disassembled the thermostat housing assemblies for cleaning (probably going to put them it in a media agitator / tumbler because it has a lot of corrosion, oil and coolant residue. It was really hard to remove those sensors.
So there are several sensors in this thing.
1. Thermotime switch
2. Water temperature sensing switch
3. Thermal Transmitter
4. Water Temp Sensor.
5. Thermal Vacuum Valve

Seems like a lot of redundant sensors but I plan on replacing all of them. Actually will clean and test the Thermotime switch first because that one is pretty expensive.

So there is another sensor that that goes on on a block just above the Thermostat housing. It has two wire coming out. Reading online it’s another Water temp switch and is used as part of the EFI?. I was reading the EFI bible and it seems to be written for a 280z not the ZX. I realize the concepts are the same but it seems these sensors and switch might be in slightly different locations because the pics in the Bible of the sensor housing are different than what came on my 82 L28.
Can anyone clear this up. See my pics
My initial impression is that the TVV and the Water Temp Sensor were put in the wrong place. The TVV isn’t supposed to be on to the Thermostat housing but on the other component.
Thoughts?





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[Captain Obvious]

Took the pic out because I think they DID move the TVV into the thermostat housing.

 

Edited February 1, 2020 by Captain Obvious

[Captain Obvious]

At least that's the 280-ish version of things. They may have started mounting the TVV up in the thermostat housing for the ZX's.

When I get a chance, I'll look through other pics. Unless a ZX guy can come in and answer first.

[Av8ferg]

Off the top of my head.....

I think the big one is the Thermotime switch, not the one going into the block.
You think there is enough temp sensors on this thing...OMG!


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