Cut and rolled both front fenders today. I also did one inner fender, and started the other but ran out of time before work. I had done them last time, but I wanted to clean it up and give myself even more space in case I go with wider tires than I had on it then. I wound up cracking the Bondo on the driver's side, but it's no biggie since I am stripping that one and it would need to be redone anyhow. The Bondo was from where I had pulled out the lip when I had rolled it, and needed to blend the shape back in to the body so it did not look altered. I will also need to cut the flange on the wheel arch trim to match, then use some velcro tape to attach it where the screws are missing. Oh, the tires in this series of photos are 225-50-16's on 16x8 in wheels with 4 in backspacing. I will be putting 245's or 255's on the front in the future. Aspect ratio and wheels to be used are yet to be determined.
Here's the starting points:
Post cut:
Here is the length of the cut, as defined by the green tape:
You can see I did more than one cut to get it to fold flat. Note that the only tools used were a body hammer that I got as part of a set for $20 at Harbor Freight, and the $10 3 in cut off tool I bought at a flea market 15 years ago for $10. Oh, and the block of wood and rubber mat that I put them on to minimize damage.
I still have to calculate the amount of compression travel I have when it hits the bump stop. You have to remember that it is not the same as the distance from the bump stop to the frame or A arm. This is because you have to take the motion ratio into account, and use trigonometry to compute it using the formulas for SSS triangles. The pivot point is one angle, the bump stop is the turning point for another, and the final one is an imaginary line from the pivot point to the bump stop contact point on the frame. Then, you use the proportions from that triangle to calculate the movement of the spindle.
Please note also that not all G bodies use the same construction in this area. Monte Carlos, for example, use a wheel well liner that goes the full width of the wheel well, and is not split like the Cutlass is. Also, if you live in a Northern state with road salt issues, you may wish to to cover the trimmed area as leaves, salt, etc. will be thrown in to the dog leg by at the base of the fender by the door. This could cause rust issues.