I started doing 5/3/1 for bodybuilding, 4 day split, about a month ago. However, because my previous injury (herniated disc) got worse, i decided to replace squats and deadlifts. Instead of squats i'll be doing leg press (after 3 sets of press i continue doing leg press 5x15 sets since thats the next exercise in the 5/3/1 bodybuilding routine). Instead of deadlifts on the back day i'll be doing a insolation exercises to target the middle and low back (rowing etc.).
Do i still need deloading every 4th week as preacribed in 5/3/1?
That you front squat, back squat, zercher squat, smith squat, leg press, hack squat etc is irrelevant. Choose the exercise, follow the program, see results. I do ring presses for my chest, due to shoulder injury and add weight thru angles and weight vests. Shoulder day has no 5/3/1 (see shoulder injury), but I do mobility work and light weights.
I guess it shouldnt harm if i deload every fourth week. Im 32 tho, i hope i wont be slowingdown my progress by deloading.
I also have shoulder issues. Its not a typical injurie, i just cant bench press as much as im dumbell pressing, coz my shoulders hurt. Even when they dont hurt i dumbell press more. Maybe i should just dumbell press i stead.
You seem to be over thinking it. The deloads were made for everyone, it wasn't an age based criteria, you probably will miss out on potential gains by never deloading. I would say the more likely you are to over think 5/3/1 (or any program) the less you should alter it.