BCBR height adjustment.. Rear lopsided?!!?!

sinceday1 · 03-17-2012, 06:48 PM

So.
BCBR Installed and all but for some reason, left rear is lower than right even after adjusting the springs to same height.

I brought the spring on the left side to sit almost near the end of the coil but it's still TOO LOW!

Passenger side rear on the other hand seems to have proper height adjustment 'profile' so to speak.

To give you guys an example, per say left and right spring perches are exactly same height, (1inch from bottom rung) driver side is sitting approximately 0.5" lower than the passenger..

What could be the problem?? When I'm adjusting the shock length to give proper 10mm preload on the spring on each side, same thing, I'll have to shorten the driver side much shorter than that of passenger side...

Jeffblue · 03-17-2012, 06:59 PM

the springs that the BC BR come with in the back are too short. while this may not be the cause of YOUR problem with uneven height, the fact remains that they are too short. you can't get enough preload on the spring unless you slam the car... call them and ask them to exchange for the springs that are longer

sinceday1 · 03-17-2012, 07:03 PM

Arg..

I don't know why my passenger side is perfect when it's preloaded.. and given the same position of coilover collars on the tube, it sits much better than that of driver's..

03-17-2012, 06:48 PM	#1 (permalink)
sinceday1 Track Member Join Date: Oct 2009 Location: Canada Posts: 514 Drives: 09 Nissan 370Z M6 Rep Power: 17	BCBR height adjustment.. Rear lopsided?!!?! So. BCBR Installed and all but for some reason, left rear is lower than right even after adjusting the springs to same height. I brought the spring on the left side to sit almost near the end of the coil but it's still TOO LOW! Passenger side rear on the other hand seems to have proper height adjustment 'profile' so to speak. To give you guys an example, per say left and right spring perches are exactly same height, (1inch from bottom rung) driver side is sitting approximately 0.5" lower than the passenger.. What could be the problem?? When I'm adjusting the shock length to give proper 10mm preload on the spring on each side, same thing, I'll have to shorten the driver side much shorter than that of passenger side...

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03-17-2012, 06:59 PM	#2 (permalink)
Jeffblue A True Z Fanatic Join Date: Dec 2009 Location: NY Age: 36 Posts: 9,192 Drives: Z32TT & 335xi Coupe Rep Power: 37	the springs that the BC BR come with in the back are too short. while this may not be the cause of YOUR problem with uneven height, the fact remains that they are too short. you can't get enough preload on the spring unless you slam the car... call them and ask them to exchange for the springs that are longer

03-17-2012, 07:03 PM	#3 (permalink)
sinceday1 Track Member Join Date: Oct 2009 Location: Canada Posts: 514 Drives: 09 Nissan 370Z M6 Rep Power: 17	Arg.. I don't know why my passenger side is perfect when it's preloaded.. and given the same position of coilover collars on the tube, it sits much better than that of driver's..