drew365

I did a search on boxed trailing arms and I still have questions. Everyone that answered the previous threads seems to think it just adds unsprung weight and is unnecessary. I went to the track today, I pulled into the pits during my runs because the car felt weird. While checking underneath I saw that I have a crack down the inside of the passenger trailing arm, it continues underneath and at the very bottom where it looks like the two sides meet it is opened up about 1/8" wide by 3". I'm thinking that boxing them might not be such a bad idea. I'm still learning to drive the car at speed but I'm starting to post some decent times. My car has a 2.7 twin plug that is putting out about 240 h.p. I'm running Hoosiers. I don't want to just buy a new trailing arm and next year be sorry I didn't box it now while it's apart. So what do you think? Should I box them or not?