I can't drive my car completely to work because I have to go over a single lane speed bump going through a security gate. To date I have only taken it 4 times including yesterday and today. The first two times I said it would be the last cause it scrapes something underneath so bad it feels like you are going to get stuck. However, the first two times I couldn't pin point exactly what it was scraping on.
I finally think I have figured it out though. It is 3 different things.
One, it is scraping on the head of 4 bolts that almost appear as they are serving no purpose on the car but I find that a little hard to believe.
The 4 bolts I am referring too are the two on each side that would bolt up the back end up the Cusco 4 point brace. Really would like to figure out if they are needed and if they are maybe I can find some that are flat with an recessed allen key instead.
Two, it is also apparently so low and the speed bump so large that it is scraping a 2-2.5ft long section of the underside main uni-body rails. These rails actually sit lower than the main section of the exhaust and the side skirts if you can believe that.
You can see the bolts again in this picture but also the 2-2.5ft behind those bolts is where I am scraping as well.
Three, the one rear exhaust hanger is weirdly welded onto the bottom of the exhaust instead of from the top and the one point of it appears to also be scraping. I plan to look into finding some shorter exhaust hangers to alleviate that problem but most of the exhaust hangs extremely tucked up in the exhaust tunnel. I believe this is partly due to the fact I am running a k20 header which is shorter. With all these clearance issues I still don't scrape the bumper, side skirts, or diffuser at all.
I probably will need to get some paint on truck bed liner in grey to paint the under side where I scrape so it doesn't create rust problems. I either need to get a titanium skid plate made or raise the car up I guess as two short term solutions. Long term the ideal solution would be a full corner cup kit setup however that might not be the best idea since I would like to start tracking the car beginning next spring.
Finally, I need to find some quality exhaust springs cause when I was looking under the car yesterday I noticed one of the ones from Home Depot I had gotten had already come off. I hope it came off on my property but who knows.