As you see from Dinos response to you the original post was NOT clear about what can and can not be used. Otherwise you wouldn't have misunderstood it. That it was unclear was clear to me the second I read it, and that is why I made other suggestions, and why I said it was unclear.
A lava bucket farm is not very efficient, but it is a type of farm that nobody can complain about because you are not creating any EMC out of thin air like you do with most EMC generators.... Buckets are 768 EMC, lava buckets are 832. So you just need to find a massive source of lava (nether), pump a bunch into tanks, collect the lava into buckets, then convert lava buckets into regular buckets to gain 64 EMC per lava source block. It is not something you would do anywhere but a server that tries to shut down most other EMC generation methods though, as it isn't particularly effective. The biggest advantage is that you can have it running while you are offline and while mining. It will never make you rich, but it does work..... Another variation, and much more lucrative in the short term, is the oil bucket farm. A bucket of oil is 2816 EMC, making this one worth working entirely manually if you have to. If you can pull 500 buckets of oil from one well you are looking at about a million EMC.
Even if you can't use transposers a simple mob farm can be set up by having the mobs fall directly onto obsidian pipes. Never actually tried this myself, but I don't see why it wouldn't work.
Even on a server with absolutely 0 automation if you can use a transformation tablet you can build an absolutely massive sugar cane farm that you manually harvest and make tons of EMC. It is boring as heck, but it is still pretty time efficient. Especially if you just do it once when you log in and again right before you log out each day for a quick EMC boost. It beats the crap out of trying to find a good place to mine on busy server where everything near the main hub of activity is almost entirely mined out.