Suspension balancing your car - ZR-1 Net Registry Forums

Harvie · 08-29-2014

Do the people with coilover conversions in their zr1s scale all 4 wheels to tune the suspension and balance their cars?

What balance do you shoot for in tuning the suspension.

Do you add weight to the drivers and pass seat or just the drivers seat when tuning?

Just wondering if and how much it would help on these cars.

I have it done and it seems to help on my straight line car and was just wondering if it is a common practice on street cars.

rkreigh · 09-03-2014

I had them tweak and set the ride height on all 4 corners but didn't check for the weight differences and corner balance

it would be a good idea but likely a bit expensive relative to the benefit on the street

batchman · 09-03-2014

You should have weight in the seats roughly matching your target, ie for racing alone put roughly your weight in the driver's seat. If not racing, it's not very important unless something is seriously out of whack, and corner weighting is a way to find that out.

All you can really accomplish is to try and get 50/50 cross-weight, that is LF+RR = RF+LR, which should give you roughly equal max grip turning either direction. Of course to approach that you may wind up making too much compromise to stance/travel, or deciding to move/remove things in the car to improve, then lather/rinse/repeat.

The hard part with corner weighting is finding scales and a level place to set them. I have the scales but no place level, so for now my car remains a mystery.

HTH,
- Jeff

08-29-2014	#1
Harvie Join Date: Aug 2014 Location: In my house Posts: 103	Suspension balancing your car Do the people with coilover conversions in their zr1s scale all 4 wheels to tune the suspension and balance their cars? What balance do you shoot for in tuning the suspension. Do you add weight to the drivers and pass seat or just the drivers seat when tuning? Just wondering if and how much it would help on these cars. I have it done and it seems to help on my straight line car and was just wondering if it is a common practice on street cars. __________________ Charter Member (since the 91) of the 1ST ZR1 Registry 1st vet $157.59. mo for 3 years new 2nd new 1 check & STILL eating funds years later [-X show poodles & trailer queens :-({\|= Fast and fun not pretty in pink.

09-03-2014	#2
rkreigh Join Date: Jan 2004 Location: Alex VA Posts: 1,087	Re: Suspension balancing your car I had them tweak and set the ride height on all 4 corners but didn't check for the weight differences and corner balance it would be a good idea but likely a bit expensive relative to the benefit on the street __________________ 95 390 LPE ZR1 (505 rwhp) LSV = Lingenfelter Super Vette Twin Turbo 2003 Z06 (800 RWHP)

09-03-2014	#3
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 455	Re: Suspension balancing your car You should have weight in the seats roughly matching your target, ie for racing alone put roughly your weight in the driver's seat. If not racing, it's not very important unless something is seriously out of whack, and corner weighting is a way to find that out. All you can really accomplish is to try and get 50/50 cross-weight, that is LF+RR = RF+LR, which should give you roughly equal max grip turning either direction. Of course to approach that you may wind up making too much compromise to stance/travel, or deciding to move/remove things in the car to improve, then lather/rinse/repeat. The hard part with corner weighting is finding scales and a level place to set them. I have the scales but no place level, so for now my car remains a mystery. HTH, - Jeff __________________ [I]91 ZR-1 #1840, autocrossing in SCCA BSP. FIC S/S's DRM chip/Watson/Borla/lid/LW batt&headlights, springs, shocks, pads & lines, quick rack & Turn One, camber brace, 32/22mm sways, A/C halfway deleted 17x11 & 12 CCW's, 315 & 335 Hoosier A6s [/I]