for you guys that have JBA headers i would like to know how did you install it. in other words do you have to remove the enigne to do install the headers or not. Taco 06 4.0 manuel 4x4
thank you very much for the info. I changed my exhuast, i have the TRD one.. i hope that wont be a problem.. i ill see how to goes but agian thank you for the good info..VietNguyen82 said:Taking everything out isn't the hard part, infact with the 4.0 theres still plenty of room in the new tacos. Removing everything was really easy, the hard part is welding the headers to the cat, very difficult to line up and you have to be really careful with what you cut away. With the jba headers you have to use the stock exhuast, but cut away the stock manifold. There are no flanges where the stock manifold meets the cats, so everything has to be cut and welded at this section. Once everything is welded back together you can only pray that you were very careful in measuring everything so that all the parts will line up close to stock positions. Then all that is left is to bolt everything back up which isn't too hard if everthing is lined up correctly like I said.
I don't know if what I said was clear at all, but hope it helps. To answer your question though, no you don't have to remove the engine. Side note though, I have a prerunner and not a 4x4 so I don't know if you might have other parts in the way.