EXHAUST MANIFOLDS
Below you will find links to all the pictures I make reference to in the following short description of what was done to the exhaust manifolds.
What was done to the back manifold is very simple and took less than 30 minutes in three simple steps.
1. Sandblast the manifold where you intend on welding it. This is crucial as anyone knows if you want any weld to hold up over time. Selecting the proper rod is also important but whoever is doing the welding will mostlikely know what type of rod to use.
2. Weld the area that you think you could go through when you are porting it. This also is very important because I actually did go through into the welded material slightly. If it wasn't there I would have been left with a nice little hole to patch up and smooth down again.
3. Port it. I used something not too conventional but you could use other things probably. I used what would be best described as a mini-belt sander that had a 4 inch long nose to stick deep into hard to reach parts. It was very handy and I don't have any pics of it as of yet (11/26/01) to show you, but I will soon.
WELD ON BACK MANIFOLD NECESSARY FOR PORTING
BEFORE WELDING AND SANDBLASTING
CROSSOVER PIPE CONNECTING END - There was a tiny casting seem on the inside of here that was smoothed out
I can't say if this helped or hindered my performance. It was done when the new engine was goin in. I also removed the pipe that was inside the downpipe from the factory ( you'll know what I'm talking about if you ever put on a cat-back exhaust system on this car ) and I used the exact same cat-back system that was on the 3100. With all that done it still sounded almost identical with the 3400 in when it was all done. If anything it was a slightly deeper tone.
