Thanks to all of you guys for good input!
Now heres what I did and what happened:
2hrs after 100mg of codeine I dropped 100mg tramadol. After about 50min I could feel a slow and fairly weak tramadol high coming on. Remember, i was atm experiencing a moderate codeine high as well. A lil over 1hr after the tramadol I dropped an additional dose of 60mg codeine. About another 1 hour after that, I could feel a super smooth and very powerful morphine high coming on. But I didn't panic because somehow I also felt overwhelmingly calm and my respiration/pulse seemed fine, thankfully. All in all, I guess it was this kind of high I was chasing and just hope I get to feel the same way the next time I'll try this again.
I should mention I ate 2 dinners and drank a lot of water through these narcotic hours.
Like Psilo said, I think it's important when experimenting with combos and new drugs that one keep dosages low. I once tried 90mg codeine and 2mg valium in which I didnt get particularly high, but the hangover the next day was terrible. I felt weak like a kitten and I had racy heart all through the day. I also looked very pale when I woke up that day. Now, if I would have done my research properly I would've found out that there exists a golden rule about opiods and benzos and that is to never mix them.
The hangover today after taking trams/codeine today is not a hangover - it's more of a bonus, because I can still feel a faint, silky high. Anyway, thanks guys and stay safe.
Leftwing: Thank you for the more specific info about these opiods. I have read earlier posts about codeine and trams and every single, experienced user is saying that one should always take the trams first and then wait an hour or so.
Psilo: I don't think I'm taking dosages which could lead me into seizures. I once took 7 small trams (50mg) and this was too much for me, because I got twitching limbs, fever and I felt horrible the next day. Though I can't say I could feel seizures nearing. No codeine was involved but I guess if it was, yeah, maybe I would've gotten seizures. Thanks for the heads up, really.