I have to port one head and exhaust manifold, and finish assembling the engine, then put it back in.
That'll be another month or two(finding time to do it).
That should leave me with a good running 04, needing nothing...but a frame, lol.
In the time mine has sat, now both axle back frame sides are rusted out(rest of frame is good).
That leaves me needing a frame, or donor truck.
My love/hate relationship with this one has me thinking that once it's running, I'm going to post it here and see what the consensus of it's value is.
As in, how much of the small fortune I've put in it am I going to have to eat so it can go live somewhere else, lol.
So I feel your pain with your engine noise.

 

Keep temperatures below 200 with a good 78 c thermostat. They will stop moving

 

First thing that you do is: Test!

Ticking sounds can come from lots of things, so you want to isolate the noise.

An exhaust leak, for example, won't go away just by revving the motor from idle, so...rev your motor. Does the tick go away or remain?

Drive forward at 30 mph where safe and brake hard with your windows down. Does the tick go away momentarily at idle during/after hard braking? What you are doing here is surging oil forward (sloshing). If the ticking goes away while oil in your pan is sloshing, then it is more likely an oil pump tick.


At idle after your motor is warm, slowly, slowly, slowly rev your motor while your windows are down. Don't do this from under the hood because you need more precision.
Note what rpms your tick disappears at:
1,200 rpms, likely oil pump tick or rocker tick
3,000 rpms, likely slipped sleeve
Never disappears, metal in oil, drain and check



There are other tests for your transmission to engine connection tick and other various noises.

Some noises are only when your vehicle is moving. That matters.



Test your Disco and report details.

 

It starts the ticking after the motor warms up. I have already installed new coolant lines, 180 degree thermostat as well as a glow shift water temp gauge. I’m not 100% it is the sleeve but all the videos I have seen with slipped sleeves knocking sounds just like mine

 

I would bet on bearings.
Drop the oil pan and remove a rod and main cap and check them.

 

whats your coolant temperature

 

The difference between cold oil and warm oil is that oil thins as it warms up.

Think about butter. Butter is oil. Put it in your refrigerator and it turns solid. Warm up butter in a pan and it turns to thin liquid that you can pour over popcorn (yum!).

That's oil.

Well, thicker oil will thin less as it warms up.

5W40 oil is thinner when hot than 10W40 oil which is thinner than 15W40 oil which in turn is a lot thinner when hot than is 20W50 oil or straight cut 30 Weight oil.

Also, fuel in your oil from old piston rings or bad valve stem seals will thin your oil both cold temps and in hot temps (even worse!).

Coolant can also be an issue if it is in your oil.

Well, thin oil can let a lot of different engine parts tick.

...and there are a lot of ways to have thicker oil.

So, check your oil. Is it new and clean and undiluted by fuel or coolant?

What oil Weight are you using?

 

Could be fuel knock too. Happened on a buddies Disco, he filled with regular by accident, started knocking after it warms up, refilled with premium and haven't heard it since(2 years).