Double split training

 I was wondering about this. I read Arnold's encyclopedia, and in it he mentions double split training. I am trying to build more muscle, and I wanted to give this a try. My routine isn't as intense as his obviously, and is more like- 

Day 1: Morning-Shoulders, Evening-Legs

Day 2: Afternoon- Biceps,Triceps, abs

Day 3: Rest

Day 4:Morning- Back/abs , Evening-Legs

Day 5: Morning- Chest, Evening- Shoulders

Day 6:Morning- Biceps, Triceps,abs

Day 7: Rest

I am finding it pretty awesome. I keep my carbs up all day long, and have lots of energy in the afternoons for a second workout, providing I do nothing up until then. Normally I would do cardio but I'm really starting to get sick of it. I was wondering if this is too much? Would it lead to overtraining? Would it be better to rest more to put on more muscle? I tried looking this up on the internet, and no one has anything positive to say about it, but I like it.

I have done this a few time

I personally prefer basic programmes like 5x5 or 3x5 training which concentrates on compound movements.  I'm currently 289lbs at 21% body fat with 19" biceps, 49" chest and 28" legs.  This was acheived from simple 3 full body workouts per week involving squats, deadlifts, bench, rows and standing overhead press.  It's packed muscle on my frame and my primary goal is strength only.

The problem with articles presented by Bodybuilding sites or books is that they're often aimed at experienced/advanced lifters.  Many people despite lifting for years are still not at a level where they'll get the most out of Arnie's programme. 

Arnold himself started out with a simple programme of compound lifts and moved onto bodybuilding later. 

I'm not saying his programme won't work for you, but I think there are much simpler ways of adding a little muscle on to your frame.

How long have you been lifting for? What programme were you using previously? Are you just after extra muscle or do you want to get into bodybuilding?

I've been lifting for years now. Earlier this year I was doing a three-four day split, but I wanted to try something different. I find when I do two bodyparts at a time, I burn out before doing the second one, and therefore my efforts aren't as intense as with the first. I find that when I seperate the two body parts into two different workouts, I tend to go all out during both, with energy to spare-probably because in order to do this I have upped my calories a lot. I hate doing cardio, and have lots of time in the run of a day for physical activity (I'm in school full time, but doing college online) so I figured two weightlifting sessions would be funner than one weightlifting and one cardio. Plus I've read that the results are better-providing adequate rest is had during the day, and nutrition is right. Did you ever try this before? I'm having great success so far, just wondering if I should worry about ovetraining or if more rest would be better for growth.

I work a 9-5 job so i'd never have the time to really try something like that.

You may have been burning out because of the way you split your workouts.  For example if you were doing a back/biceps workout it would be better do something like:

Deadlifts, Curls, Rows, Hammer Curls,Pull Ups and Reverse Curls.

I personally wouldn't do this workout but I'm basically saying that if you were going to do a back/biceps workout it's important to alternate between the muscle groups, so it's: back exercise, bicep exercise, back exercise, bicep exercise.

This should avoid burning out, I'm guessing from what you've said that you used to one muscle group in row, then move onto another muscle group in your workouts.