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Discussion Starter · #1 ·
I finally had a chance to type up this post....

Prior to Super Lap Battle I revamped my car so that it can be 100% for the competition. On the list was to revise front aero, rebuild/Balance Motons, and most importantly repair/reinforce my subframe + bushings.

I got a care package from TMS which included, monoball bushings for the control arm, solid subframe and diff bushings. I quickly went to work and tore the car apart, I dropped the complete rear end to find a pretty severely cracked subframe.

My subframe has been cracked for about a year now and I've been keeping a close eye on it, however it is more severe than I had expected since I could only see a small portion of the crack I wasn't expecting it to be as bad as it is.

Seeing that my car is a 95% track car I wanted to really reinforce the factory subframe, I made custom subframe mounting plates that are a little thicker than ones that you can get on the market. Upon removal of the chassis undercoating we found very light hairline cracks on the crease of the chassis as well as each mounting point on the rear subframe mounts. From there we welded all the cracks and extra welds around the mounting points to prevent further failure later down the line. We also drilled extra holes in the reinforcement plates around the mounting points to spot weld for more penetration between the plate and the chassis.

In between welding/cooling periods we were installing all the bushings we received from TMS. Pressing the subframe bushings in/out was quite a pain, however we shoved all the bushings into the freezer which helped but 1/2 way through you can see the bushing heat up and it would get more and more difficult as you get to the end.

I also did other top secret mods but that info will be released later on. :shifty:

On completion of everything the car felt awesome! I swear the car actually rides better than it did w/ the oem bushings. It could be a combination of the custom work I did along with the monoball bushings for the control arm, the monoball bushing would give the rear spring a more consistent spring rate since it removes the flex from the inner bushing.

Photos:

Cracks!!!



Starting the repair/extra welds



After repair/extra welds



Thicker plates, extra spot welds to the chassis from the reinforcement plate



TMS Goodies



TMS Subframe bushings installed



TMS Monoball bushings



TMS Diff bushings
 

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Discussion Starter · #3 ·
That's an awesome setup and good job welding the reinforcement plates into place. Looks like some good welds!

This is off topic, but I see the GoPro camera in your signature. What editing software do you use? I'm trying to find a simple video editor for mine.
I'm a mac user so I edit in iMovie.

Really simple to use; drag, drop, type, add audio.. done. I can have a simple video completed in under an hour. The video linked below I made in roughly 1 hour... all the effects are already setup, you just type and change the font/color to your likings.

http://www.youtube.com/watch?v=7q2heaq8BoI
 
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