My morning at Eibach .
#154
#158
#160
Originally Posted by SinCityG35
What are your alignment specs after the install?
I don't think I really need the A-arms, but if Eibach wants to test fit them on my car, I'm going!
#162
#164
Terrycs,
Is your car crooked? I looks lower on the driver side. Also the alignmnet specs you gave of your car are uneven and railgunners was even with the H&Rs. Here is your quote that leads me to belive your car is not perfectly level from side to side, "My car (before camber kit) was -1.7 / -1.4. Railgunner’s car was -1.6 / -1.6. " your car was .3 different from side to side both on the front and the rear. That would lead me to believe it is not an even drop. Can you measure to confirm?
Is your car crooked? I looks lower on the driver side. Also the alignmnet specs you gave of your car are uneven and railgunners was even with the H&Rs. Here is your quote that leads me to belive your car is not perfectly level from side to side, "My car (before camber kit) was -1.7 / -1.4. Railgunner’s car was -1.6 / -1.6. " your car was .3 different from side to side both on the front and the rear. That would lead me to believe it is not an even drop. Can you measure to confirm?
#165
FYI, since the 2nd gen chassis and basically a slightly modified chassis, I don't why all the rear suspension adjustment peices are necessary. I'm running coupe springs in rear of my 03 G35 and have about .75 degree more camber than stock. I've been running this setup for about 2 years now with absolutely no wear problems in the back. However, the Z springs in the front have caused some very slight inner wear over 6K miles, but once the tires are swapped to the rear, wear becomes uniform again. I guess my point is, if you're not experiencing significant wear in the rear, then I'd consider passing having to modify your rear subframe and spending all the extra money to put it back to OEM specs. With this chassis, you need to be more concerned about the front alignment, not the rear. Seeing that the 2nd gen has the same ride height as the 1st gen, I'd be VERY concerned about any spring that lowers the car more than 1" because after 1" is where all 1st G35s start to see really extreme front tire wear especially with wider than stock tires/rims. The only way to correct this problem is with expensive A-arms.
Finally, anything more than a 1" drop on stock shocks is a no-no because the shocks are not valved for that operating range nor the spring rate when the progressive springs go into their stiffest setting towards the last 50% of compression. Progressive rate springs like Eibachs are good for looks and initial ride quality, but not really good for all out performance because they're initially soft and then quickly firm up which can give poor at the limit handling characteristics. The larger drop also compromises suspension travel which is really bad because the suspension will be hitting the bump stops far more often which is never a good thing.
Finally, anything more than a 1" drop on stock shocks is a no-no because the shocks are not valved for that operating range nor the spring rate when the progressive springs go into their stiffest setting towards the last 50% of compression. Progressive rate springs like Eibachs are good for looks and initial ride quality, but not really good for all out performance because they're initially soft and then quickly firm up which can give poor at the limit handling characteristics. The larger drop also compromises suspension travel which is really bad because the suspension will be hitting the bump stops far more often which is never a good thing.
Last edited by DaveB; 05-27-2007 at 12:06 PM.