1982 633CSI - Engine Locked up from sitting

[69BMW2002NH]

Hi everybody,

Looking for some guidance. I've purchased a 1982 633CSI 5 Speed Safari Beige over Nutria. The car is stunning and in great shape but the engine is stuck since the engine hasn't been started in about 10 years. I've added a mix of Seafoam, PB Blaster and Mystery Oil to the cylinders and it's been soaking for about 48 hours. I've got a 1/2 inch wrench on the crank pulley but the engine won't budge a bit.

What are some other things that I can try? I've heard that Kroil is what I should be using and I've heard people recommend putting an electric heater under the engine with some tarps over the car in order to warm it up.

I've bought a flywheel turning tool but don't know where the best place to access the flywheel would be? Is there an inspection cover?

Any and all help would be greatly appreciated.. Would like to avoid pulling the head if I can.
https://imgur.com/uL0XCOt
https://imgur.com/7MyZR7K

[bakemono]

Never encountered this problem before but my first move would be to pull the valve cover and see how the top end looks. The valve train and chain could surely benefit from lubrication although that may not be enough to get the engine freed up. Next up would be dropping the oil pan.

[69BMW2002NH]

Thank you. Can I drop the pan with the subframe in the car?

[Caff]

Never encountered this problem before but my first move would be to pull the valve cover and see how the top end looks. The valve train and chain could surely benefit from lubrication although that may not be enough to get the engine freed up. Next up would be dropping the oil pan.

Agreed.


In all honesty the only way to do this - and have good knowledge that the engine actually is fine - is to strip the engine and get it rehoned/crank journals ground depending on whats causing the problem.


Before doing anything else there are a few things I would question, like if the clutch is actually disengaging simple things one step at a time. After that id be buying a cheap bore scope with a light on the end and get the plugs out and have a good look inside each bore, looking for a few different things, is there something causing a jam, are the pistons and bores damaged, can you see actual crud/rust around the top edge of the pistons?


After this if it 100% points to the bores and you haven't managed to turn it at all using a big breaker bar then I'd say its going to be easier and cheaper long term to find a new engine. Rather than pulling this one apart to have to pay for all the new bearings, pins, bolts, gaskets, possible bore re-hone or crank re grind or both.

[bpoliakoff]

Inspection cover under bellhousing right behind trans for the fly wheel access. What are your long term plans for the car/ Pulling the valve cover accomplishes nothing too much. unless it shows if the timing chain guides have broken which could jam the motor. This a friend of mine found when he bought a beautiful car cheap because the seller thought the motor was gone. Next step is to pull the head and see if you have a bent valve and also seeing what the cylinder bores look like. Then you can determine if an engine rebuild or an engine swap is in your future. If an engine swap hopefully you will get a good one??

[69BMW2002NH]

My goal for this weekend is to break the sucker loose. I've got a flywheel tool, fan clutch removal tool (gonna try and turn it from the top) Kroil, and a boroscope.
If that doesn't work I have a valve cover gasket, intake manifold gaskets and oil pan gasket for inspection.
If that fails, i'll be pretty close to having the head off.

Really want to avoid a major disassembly but i'll have it running one way or another ASAP.

[songzunhuang]

My goal for this weekend is to break the sucker loose. I've got a flywheel tool, fan clutch removal tool (gonna try and turn it from the top) Kroil, and a boroscope.
If that doesn't work I have a valve cover gasket, intake manifold gaskets and oil pan gasket for inspection.
If that fails, i'll be pretty close to having the head off.

Really want to avoid a major disassembly but i'll have it running one way or another ASAP.

Love the determination and look forward to hearing of your success!

[bpoliakoff]

If the clutch appears good, tow it and pop the clutch!~

[Pod]

I bought what I thought could have been a "Hallmark" many years ago with an engine that was not running. It had been parked in a lock-up for a long time. Eventually, after much time spent trying to loosen it off, I found out why...................................

I suggest you remove the head

[bakemono]

Thank you. Can I drop the pan with the subframe in the car?

I'm not sure about this. I seem to remember that on an M20 I managed to sneak the pan out by strategically turning the crankshaft to avoid hitting the counterweights on the way out. Since yours won't turn you would need more clearance. Unbolting the motor mounts and tilting the engine up MIGHT be enough??

[bpoliakoff]

No need to drop the cross member. Just lift the engine within the engine bay. Reason being is not the crankshaft counter weights but rather the oil pump pickup wont clear the pan with the motor in place, That is why the motor needs to be lifted or the cross member dropped

[69BMW2002NH]

Been trying to remove the intake manifold for the last 3 hours. Same to say I’m selling all of my BMWs and never working on a bmw again. Would be easier to pull the engine than to take the intake manifold off. It’s absolutely asinine /rant

[kylefav390]

The intake was a pain for me as well even with the engine out of the car. I ended up cutting a part off a closed end wrench to be able to at least make a quarter turn on the nut. But I cant imagine doing it with the engine in the car. I see a lot of people just pull the head off with the intake still attached.

[69BMW2002NH]

The intake was a pain for me as well even with the engine out of the car. I ended up cutting a part off a closed end wrench to be able to at least make a quarter turn on the nut. But I cant imagine doing it with the engine in the car. I see a lot of people just pull the head off with the intake still attached.

I'd do that except i'd need to remove the starter wiring which is also under the intake manifold and a pain to get at! - What were the designers thinking?

[hornhospital]

- What were the designers thinking?

Dealership service charges, that's what.

[69BMW2002NH]

I have a line on an S38 locally. It's out of an E34... Does anyone know of a build thread? Not sure what's involved in terms of wiring and the computer.

E34 harness and computer are included though!!! We'll see how this all progresses.

[baders]

I have a line on an S38 locally. It's out of an E34... Does anyone know of a build thread? Not sure what's involved in terms of wiring and the computer.

E34 harness and computer are included though!!! We'll see how this all progresses.

Why yes Sir. Here's one I prepared before

http://bigcoupe.com/phpBB2/viewtopic.ph ... it=locutus

RHD though so some mileage may vary. I have details on wiring conversions so let me know if you want those. I have everything working except the damn economy gauge.

[69BMW2002NH]

Found the problem... Looks like a blown HG+ years of sitting caused cylinder 3 to get destroyed. Not sure if it's pitted yet but i'm currently on the hunt for a block, or an S38 if the deal is right.

[Caff]

IF you had managed to free that off you would have scored the hell out of the bore.

[69BMW2002NH]

IF you had managed to free that off you would have scored the hell out of the bore.

Now I need to see if that stuff will come off!

[bakemono]

hard to see but it looks more like carbon buildup than rust, maybe it will come clean. The trick would be doing it without scratching the metal too much. Get a toothbrush and a good solvent...