looking to make a collector starting with all 90 bends from turbo flange wat sort of angles do i need to cut them to make all 4 fit ,onto a t3 flage something like his collector but with 4 90s bends

 

The same as if you were doing it with straight tube, but you will need to make the cuts according to where the 90 needs to point.

Also would tell you to be damn careful, because if you're not you'll end up screwing yourself out of being able to weld sections real easily.

 

il give it a try on some pvc bends today thank you

 

I first figured out my flange opening width, and split the difference between the left/right 90s. Then I picked the intersection angle, and then took the flange depth, and split the difference between front/back 90's. Then welded it all together. Yes, it's very tight but not impossible to weld.

 

very nice but the welding must be thight as hell to do lol ,,,any more pics of some others ?