DJ2.1 Rebuild

[Stesaw]

Ive done the oil pressure relocation as well stu with one of the 0-5 bar senders and a gauge on the dash. One connection to the oil light on dash, the other to the gauge. 
I didnt prime the feed pipe on mine, just cranked the engine til the light went out on the dash. Didnt take that much cranking to achive that.

I also used some PTF sparingly on the threads of the sender as I didn't want no leaks as you found out the threads don't seat all the way down.

[maxstu]

Thanks, Steve. A great bit of extra info.
So for now l will keep sender in situ and connect low oil pressure switch wire for initial starting.
Will crank engine with coil lead removed (and earthed) until oil light goes out.

[maxstu]

Engine back in. All plumbing and wiring re-connected (except coil lead and fuel injection power).

Ive fitted the new oil sender and wiring. Tomorrow will run a wire from sender to front of vehicle for oil pressure gauge..
Exhaust system will get new gaskets, bolts and nuts.



At what point are the spreader plates deemed worn out?

[Smiffo]

Well done Stu


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[maxstu]

Too early, Smiffo. I have a major issue. Coolant is coming out of number three exhaust manifold.

I filled it with coolant last night and left it. Today l was fitting up the exhaust and water came out. At first l thought it was the thermostat about. But that is good.

So looks there is coolant in cylinder from a failed fire ring in no 3.

Bugger bugger bugger

Taking spark plug out now. Will come back shortly.

[maxstu]

Plug out and Cylinder three is dry.

What is causing water to flood out No 3 manifold head? I can control the flow with the bue cap. Loosen cap and l have my own waterfall coming out of No 3 only. Tighten cap and it stops.
It's a reconditioned AMC head with new springs and valves.

Heeeeelp!!

[maxstu]

Right. Found the answer and lm not a happy man. But it is not water in the cylinder, that is confirmed.
I bought these heads from a respected forum member. But l suspect he didnt know about this either, as he never fitted them.
So whoever refurbed these heads has drilled and tapped out the lower exhaust thread on No 3 into the waterway.

What to do please?

[Stesaw]

Oh christ that's poor work matey gutted for you on that.

[maxstu]

My thumb nail denote how far l can push stick into manifold stud hole. 25mm is the maximum.
Well peeved.

[mrhutch]

Oh man, thats not good news. I'm not a WBX guy but does the manifold bolt into the threaded holes?  Would it be possible to use an exhaust stud with some kind of loctite to bung it ?

[R0B]

So near yet so far. I'm gutted for you Stu.

[Smiffo]

Is that a new head required, or are they salvageable when drilled too deep?


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[tobydog]

What is the size of the hole/tapped hole going into the waterway?

[maxstu]

Oh man, thats not good news. I'm not a WBX guy but does the manifold bolt into the threaded holes?  Would it be possible to use an exhaust stud with some kind of loctite to bung it ?

Talking to a marine engineer later today.
Im worried about expansions of different materials.
Ideally plug it with aluminium. But head off for that l expect.
I did consider a small plug and JB Weld. Then the stainless steel stud with something around it.

[tobydog]

https://www.hasco.com/en/Z/Cooling-syst ... /p/Z942_d1

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