i lowered my 2002z In the fender wells I have a quarter gap difference in the front and a half inch gap difference in the back i drove the car and everything seems to handle ok How big of a gap difference is a big deal.

 

bump

 

If what you're trying to say is that the gap between the wheels and the fender lip is larger in the back than in the front, don't worry about it. Stock, there is a rake between front and back already.

In other words the front of the car sits lower than the front. So, what you should do is measure the distance between the frame rail and the ground near the little rocker panel screw near the frame rail jacking points in the front and the back. The measurement should result in the front being about 3/8" closer to the ground than the rear.

Next, you should check side to side. They should be the same measurements. This is known as corner weighting, which results in even weight distribution side to side, even if the front has more weight than the back due to the rake.

Note that you may end up having the bolts at different heights all around due to the rubber stops being worn differently. What I did was turn the bolts in full revoultions to make sure the rubber stops ended up in the same position, then applied the measuring technique mentioned above. I then drove the car that way for a week, then fine tuned the height settings as the car settled over the week. I did this every week for a month, then did a final check and had the car aligned.

Also note that some people like to have the driver's side slightly higher to compensate for when you have only a driver in the car and no passenger. I didn't bother with that, because not only do you have to adjust the driver's front higher than the passenger's side, you'd inevitably become obsessed and get into trying to dial the driver's side perfectly by then raising the rear a hair, then going back to the driver's front to compensate for that, and then back and forth until you have it just right. Then, you get into having someone measure while you're sitting in the car, and on and on. Besides, I personally don't believe it really makes that much of a difference unless you're tracking the car at a VERY high competition level.

Hope this helps.

 

Thanks I guess Iam going to have to do some fine tuneing from side to side

 

I also don't believe in using the body (fender/quarter panel) openings as a reference point. The body panels can be off that much themselves. I would rather see you use the frame to the ground (flat ground) as a reference point, not the tire to wheel opening as suggested in archive lowering threads.

 

BE SURE THE SURFACE YOU'RE MEASURING FROM IS DEAD LEVEL. IT DOES MAKE A DIFFERENCE.