JB_97ws6TA

iTrader: (6)

Installed SFC as well as K-member out so the factory torque arm has been removed and reinstalled. Under hard accelerating either from a dig or roll I get a strange grinding/rubbing noise from the rear somewhere, one thing I do know is that it is not tires rubbing fenderwells...any ideas let me have em the only real idea I have is that I didn't have weight on wheels when I tightened the torque arm, would that cause this noise?? Also are you supposed to go back and retorque SFC after some mileage??

Stroked96Bowtie

iTrader: (22)

Have you been under the car to inspect things? If its under acceleration it sounds like it could be something rubbing with wieght transfer.

JB_97ws6TA

iTrader: (6)

Yeah I understand that it has something to do with wieght transfer but it is almost impossible to duplicate with the car in the air. I was hoping that someone has had something similar happen to them so I could gain a little bit of direction instead of going in blind

MadMike 97 Z28

iTrader: (3)

not sure exactly how it sounds but is it possible that the 10 bolt is making the noise you're hearing.

Stroked96Bowtie

iTrader: (22)

It could be so many things. The only time I had a similar issue was when I put in a LS1 DS, under acceleration it would rub my saftey loop. Once I got under the car it was pretty obvious, look for shiney spots on things. I also had my torque arm hitting the under side of the car at once, but Ive got an aftermarket piece.

Elliott's94Z

iTrader: (12)

I experienced the same thing after I put on my SFC..jacked it up and re-torqued the bolts to a tad over a 100ftlbs and haven't had any issues since..just an idea of what it may be.

JB_97ws6TA

iTrader: (6)

which bolts did you tighten to 100 ft lbs?? The LCAs and the 4 in the front that attach to the frame rail?? That is what I was thinking I was just going to put it up on a chassis lift, loosen everything with weight on wheels and then torque the snot out of it.

Elliott's94Z

iTrader: (12)

The actual bolts for the SFC @ a 100ftlbs. That's what Ryan over at UMI suggested. I bought the bolt in style. I would just go through everything underneith and re-tighten. I did since it was on the rack.

UMI Sales

iTrader: (1)

Hello,

All it takes is even though you think everything's tighten enough on the SFC, they have to be tighten evenly....just food for thought

Thanks Again,
Brad