loclark757

Got the bolts out. I just used a pipe I found at work which worked perfect as a breaker bar.

Now the only thing holding the cylinder head in is a 6mm hex bolt on transmission dipstick mount which is right on the side of the cylinder head...I've gotten everything else unbolted!!!

ps2cho

Awesome! Make sure to take pics. I recommend covering the cylinder walls and using a dremel with a cleaning attachment and clean the tops of the pistons.

loclark757

I've been making pics daily...I'll get some more up soon

What do you mean by covering the walls?

Are you referring to using the dremel on the walls as well...

wagmar

Check Samstagsales.com. They have the most complete assortment of specialty tools.

loclark757

Ok got that Transmission bolt out and everything else except the last Intake Manifold bolt right next to the Cold start Valve...heres a pic

The head on the bolt is gone all of a sudden. It wasn't like that the other day...How could I get it out...

ocpanther

Was it just a nut (with or without a washer) that already was loosened? It doesn't look sheared off. Can you pull the intake away from the head at all to see if they slip apart?

loclark757

That's the thing. Can't remember. Labled everything in bags. I remember having to remove the cold start valve in order to get it out and it had a head on it then...

It's out a little bit. Up against the intake manifold has a bolt outline where the bolt would be.

In Ps2cho's thread it shows a pic of an unthreaded screw like mine?

The cylinder head is stuck to the Intake Manifold. How do I wedge them apart?

wagmar

I replaced the head gasket on my 91 300E last month. I used a large putty knife to separate the intake manifold from the head. Make sure all bolts are removed.

loclark757

How was your experience with the middle intake manifold bolt right beside the cold start valve?

wagmar

I reached that bolt from underneath, with an extension & a u-joint adapter. Have plenty of light. Also, make sure the hood is in full upright service mode. I had a great success with this operation, & saved $1500.00

wagmar

I prefer to use 1/4" drive sockets & ratchets, due to space constraints.

loclark757

Im talking about the middle bolt that attaches the Intake Manifold to the Cylinder Head...Not the support strut bolts

There's a total of 5 of those bolts and the middle one for me is just a headless screw...

ps2cho

The I.M. came out pretty easy when I did it. Just give it a "careful" firm tug towards the driver side and it should separate from the head. Remember you don't want to bend anything though, so be careful. If it is not separating, something is still bolted down.

Have you disconnected the exhaust from the exhaust manifold?

loclark757

Yeah already unbolted the exhaust. Tomorrow im going to try a putty knife as a wedge.

That middle bolt on the top side of the Intake Manifold looks like its attached to the Head. At least it looks like that in your thread when you did it.

Is there something special that goes there. I wonder what I did there for a threaded screw to just be hanging out. Is it some type of injector?

ps2cho

I just took a look at my wagon right now...I believe that is just a locating screw with a nut that goes through to the other side. You can see the hole here...



It resides literally right next door to where the cold start injector/valve sits. You need to remove the CSV to be able to get at it.

Hope that helps.

loclark757

Yep already removed the cold start valve.

Whatever was there is not there any more so I don't have to worry about it for removal.

I'll worry about what goes there later.

What kind of foam cleaner did you use? You got your engine clean as a whistle. I've got sludge on my engine...

ps2cho

I just bought the generic walmart brand cans of engine degreaser. At $1.97 each, get 2-3 cans and just shoot it all over! Just let it sit for a 10 minutes then agitate it with a good brush. Rinse and repeat if necessary...depends on your standards.

There is nothing but a nut on the end of that threaded screw....so just find one that fits upon reassembly. I can take a pic of mine if you need

loclark757

That would be very much appreciated!

Im going to pick and pull tomorrow. I didn't know I was gonna be able to get the bolt out of the trans mount so I bought it and a trans dipstick for less than 5 bucks. Just gonna return it and get other things that I need...

When spraying that foam cleaner stuff what engine parts do you shield from the cleaner?

ps2cho

Just make sure it doesn't get into the valve train or the intake manifold.

loclark757

Ok the intake manifold is not cooperating but I have managed to wiggle it a millimeter with the use of the putty knife.

Would it be bad to use a hammer to tap the putty knife in more?

How about using WD-40 in that space in between the Intake Manifold and Cylinder Head? Would it damage the Manifold...

wagmar

You are on the right track. I loosened the IM support bolt from underneath. Remember, the IM needs to clear the alignment stud before the head can be lifted off.

wagmar

Also, there are more than 5 bolts securing the IM. They can be accessed from underneath.

wagmar

When the IM & EM are free, realize that there is an alignment pin holding the driver side timing chain guide rail. The repair manual suggests that it be removed with a slide hammer prior to head removal. I did not have one at my disposal, so I slid the head back to the firewall 1/2" or so and then lifted the head out from the back side. Be careful, you can crack the top off of the guide rail. If you crack the top portion off (its brittle), its not a catastrophe. The rail guide has plenty of length to do what it needs to do.

loclark757

The 5 bolts for the IM are on the side. I don't know what your talking about them being reached from below. Im talking about the M103 engine...

As far as I know there are only two bolts supporting the IM from below the engine.

Already got the guide rail pin out.

Im 100% sure everything is unbolted because the Cylinder head and IM are both extremely loose and wiggly. I just have to get them separated now.

wagmar

Examine PS2CHO's photo. If memory serves me correctly, I believe I removed more that 5 bolts for the IM on my 103 motor. On his photo, double check to see if you removed the bolts that his photo reveals, esp. by the water pump and alongside the bottom edge of the IM.