Quote:
Originally Posted by junqueyardjim
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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With the greatest respect, this statement is BUNK! It's bolts and gaskets like anything else.
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.