Excessive high speed roll *Need to go Lower * - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

steve shadows · 12-18-2007, 04:58 PM

Well I want to go lower.

I learned some weak spots on the car this weekend at B-willow.

It was my first real road racing track day and the car was a handfull to control around the technical course will all that HP but was mighty fun irregardless.

Anyways...

I have AGX Adjustable shocks front and back with GC Coils kit with 400 rate front springs and 300 rear.

I love the way the car handles but I would like to get the whole car 1/2 inch lower all the way around. The rear coils are only adjusted halfway down right now, so I have more room to drop the back ( a whole nother inch!). However if I go too low in the rear the car sits like its drag launching. So the problem is only on the font suspension pieces

I followed the directions on the installation from GC for the AGX's perfectly. I don't want to buy another coilover system. I was thinking of these options.

1. Complete shave area where GC coil perch is sitting now and move it down the AGX body 1/2 inch , tack weld the mild steel part to the body and then have my room to go down in the front.

2. Try to source up two front coilover from another maufacturer, used or new that allow for more ride hieght adjustment in the front.

3. Remove the actual adjuster (gold perches) from the front GC coils completely and secure the lower milde steel perches some how, or add a large metal ring ontop of them to support the spring seating on a circular matching base. (the gold perches are like 3/4 of inch in height).

Any Advice?

Again I really liked the way the car handled this weekend (aside from needing new subframe bushings and better brakes). The springs were just stiff enough and very digressive feeling in the car overall, easy to control and linear feedback, just too much body roll over elevation change turns.

Also heard that lower engine mounts could also support a lower center of gravity? I was looking at the peak performance ones, I need to replace my blown out nismo mounts any ways next month.

Cheers and thanks to any help from anyone!

Here is how the car sits the front coils adjusted all the way down, the rears adjusted down half way.

Under hard decel

Slalom Acceration

Acclerating from Pre-Grid

The car did not seem as rigid on outside roll over, or general body roll on hard decreasing apex turns.

The other option I was considering is just purchasing some tein flex for the car.

12-18-2007, 04:58 PM	#1
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	Excessive high speed roll Need to go Lower Well I want to go lower. I learned some weak spots on the car this weekend at B-willow. It was my first real road racing track day and the car was a handfull to control around the technical course will all that HP but was mighty fun irregardless. Anyways... I have AGX Adjustable shocks front and back with GC Coils kit with 400 rate front springs and 300 rear. I love the way the car handles but I would like to get the whole car 1/2 inch lower all the way around. The rear coils are only adjusted halfway down right now, so I have more room to drop the back ( a whole nother inch!). However if I go too low in the rear the car sits like its drag launching. So the problem is only on the font suspension pieces I followed the directions on the installation from GC for the AGX's perfectly. I don't want to buy another coilover system. I was thinking of these options. 1. Complete shave area where GC coil perch is sitting now and move it down the AGX body 1/2 inch , tack weld the mild steel part to the body and then have my room to go down in the front. 2. Try to source up two front coilover from another maufacturer, used or new that allow for more ride hieght adjustment in the front. 3. Remove the actual adjuster (gold perches) from the front GC coils completely and secure the lower milde steel perches some how, or add a large metal ring ontop of them to support the spring seating on a circular matching base. (the gold perches are like 3/4 of inch in height). Any Advice? Again I really liked the way the car handled this weekend (aside from needing new subframe bushings and better brakes). The springs were just stiff enough and very digressive feeling in the car overall, easy to control and linear feedback, just too much body roll over elevation change turns. Also heard that lower engine mounts could also support a lower center of gravity? I was looking at the peak performance ones, I need to replace my blown out nismo mounts any ways next month. Cheers and thanks to any help from anyone! Here is how the car sits the front coils adjusted all the way down, the rears adjusted down half way. Under hard decel Slalom Acceration Acclerating from Pre-Grid The car did not seem as rigid on outside roll over, or general body roll on hard decreasing apex turns. The other option I was considering is just purchasing some tein flex for the car. __________________ Like Me on FaceBook !