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View Poll Results: Intake manifold? | |||
Remove with cylinder head | 4 | 22.22% | |
Unbolt from cylinder head and keep it on the car | 14 | 77.78% | |
Voters: 18. You may not vote on this poll |
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LinkBack | Thread Tools | Display Modes |
#1
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Head gasket M103: Remove intake manifold?
I'm just curious, when you guys do head gaskets on the m103s, do you guys always remove the intake manifold from the car?
i'm used to removing the cylinder head with the intake manifold together, but when I put it back, I put the cylinder head down first, then manifold afterwards. i have to do the cylinder head gasket on my m103 now, and im curious to try removing just the cylinder head without taking the intake manifold off the car. what ways have you guys done? |
#2
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Well now
If you are "used" to doing it, you should be telling us. A Mercedes mechanic on the Forum told me it was a very difficult job and I think he is right. He said for the home mechanic it was easier to switch engines, and that is how I avoided the job of R & R M103 head. And I did get a wonderful used engine from that move, an 89 built M103 instead of the 86.
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Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it! |
#3
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Its not a hard job. It just takes A LOT of time. I always just took out the intake first, then the head.
The only tricky parts to the job are getting to those pesky intake "mount bolts" at the bottom. Get the proper "pin puller" to remove the pin that holds the timing chain guide to the head. The first time I did it, I felt pretty confident the whole way. It took me about 10hrs removing, (maybe 6 if I was actually working) and 3-4 hr to get it back together
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Eugene 10 E63 AMG 93 300te 4matic 07 BMW X3 14 Ford F-150 Fx2 |
#4
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cylinder head gasket isnt a tough job really and I've done m102s and m103s with removing intake. im just curious to try on my personal m103 removing just the cylinder head to see if its possible. but I probably will ultimately remove the intake manifold too because I want to pressure wash it, looks nasty.
just a curious thought I had. |
#5
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I sure its possible, it just might be more work than its worth.
I recently did a partial overhaul on my m103 this past winter. I took the intake, removed everything and took it to the machine shop for a "hot tank" bath. It came back to me in brand new condition. Im really glad I did it because now every time I stick my hand in the engine, i dont have to spend all day scrubbing grease off my hands. Your throttle linkage is probably sticking too. You will be happy you did.
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Eugene 10 E63 AMG 93 300te 4matic 07 BMW X3 14 Ford F-150 Fx2 |
#6
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I just cleaned and lubricated my throttle linkages this weekend actually. the part of me that wants to clean the intake was because I saw the disgusting manifold compared to my clean throttle linkages.
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#7
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Quote:
That said, there are a few things you need to be aware of and it is a challenge, but it is very doable for an accomplished DIYer. To answer the OP's question, I think it's much easier to leave the intake manifold in place. There are a couple of intake manifold bolts that you will have to get to from underneath, but as long as you have a good assortment of extensions you should have no trouble leaving it in place. Not only is it easier to leave it in place, but there are several connectors on the intake manifold that get brittle with age and miles. By not disturbing them you don't have to worry about damaging them. I would strongly recommend leaving the intake in place. |
#8
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I don't know if this applies to the 103, but on the m104, removing the intake first was a huge mistake....having both intake and exhaust manifolds in place during assembly makes placing the head in place correctly a much easier job. it was a pain today without the manifolds because there was nothing to hold-on to while installing the head....
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1993 300E, 2.8 M104 ..... |
#9
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I've done a few M103 head gaskets and always unbolt the intake. Makes lifting off the cylinder head much easier IMO.
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http://i193.photobucket.com/albums/z...-RESIZED-1.jpg 1991 300E - 212K and rising fast... |
#10
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Yeah, you can unbolt the intake and just slide it over a bit, leaving most of the electrical and vacuum connections intact.
I definitely agree that the less you mess with those brittle wires and hoses the better off you are. Biggest issue for me is breaking the head bolts loose. Haven't snapped one yet, but they really take a lot of force to undo. DG |
#11
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With the greatest respect, this statement is BUNK!
Well Larry is correct! Lets say that additionally I should add, yes that is what I was told - but !. But what I failed to mention was that plus the R & R of the M103 head, the head was in bad shape, and maybe could not even be saved. And in that context John Hef told me, that a much better solution would be to replace the engine, not much more work, and probably a more successful outcome. AND, he had a customer friend who was just really wanting to sell what he considered a fine engine and really what a great engine it has turned out to be. I still have the block for that M103 and if you want it it is free, but you have to come and pick it up. If I get no takers, it is going to the yard in a week or two. Thanks Again, John Hef
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Junqueyardjim Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis 1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA 2003 Jaguar Type X, AWD. beautiful, good mileage, Mom's car, but I won't let her drive it! |
#12
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manifold stuff
my experience tells me take everything off the head before removing it. The intake manifold cannot be attached to the head, anymore than the exhaust manifold or the timing chain....Yes, the intake manifold can remain intact in the engine bay and be reattached, it's the preferred way actually.
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#13
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valvers
Just thinking about how many I've done....Peugeot 504D, BMW 2002, Fiat 131, Honda Civic, SAAB 900S Turbo, VW Rabbit....in all cases it worked but you had to take everything off first and basically do it right......
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#14
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I did it on my 300TE and it saved me a ton of time and headache. You don't have to touch anything on the intake side. Nothing at all.
Trust me. You'll be thanking yourself when the head is back in because you no longer have to worry about potential issues with something not being put back on right...anything can happen. Simple is the way to go. The bolts are a tad tricky, but nothing that difficult. The main issue is just being aware that the guide pin in the center can be broken/bent if you are too aggressive. Just push the intake manifold away from the head carefully and the pin should not have any issues coming out. Quote:
Ignore him. This troll needs to get banned. Leave exhaust manifold ATTACHED and the intake manifold DETACHED. Search my name for my head gasket thread if you need pictures of my removal w/o intake manifold attached.
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2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k |
#15
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Agree its most helpful to get technically correct advise and that's what this list is about seems only one bad egg here!
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