Zjarek is correct... Conduits are like a peer to peer network. They don't care about (and in fact don't even simulate) energy transfer over distance. They simply exchange energy directly between endpoints. Each conduit section (that is, the block you place down) has a burst input limit and a burst output limit of 1000 MJ per tick respectively, shared among all connections to that block (if I understood KingLemming correctly, that one time in PM).
Also, each input point distributes its energy equally among all output points currently requesting energy (up to the point where output points stop requesting energy, i.e. it won't assign 20 MJ to an output that requests 4).
Without being able to take a look at your wiring, I don't know what's funky about it, but try this:
Place down 6 empty redstone energy cells near your engine bank. Then, disconnect your engines from your conduit network, and instead hook them up to the redstone cells. Only to the redstone cells, nothing else. What you should see is each of the six redstone cells gaining 100 MJ/t. This can easily be seen in the GUI because the tens and ones digits remain completely static, while the hundreds and thousands digits climb rapidly.
If that's not the case, take an EU-reader to the cables supplying the electric engines with EU (ideally one section that has the full load going through it). With 30 fully upgraded and 102 basic electric engines, you should be seeing 1704 EU/t moving through the cable. If you are not seeing that, make sure you are supplying enough EU/t.