Need Spring Rate Recommendations
#31
Race Car
Very close:
C2: -3.0 front camber / -2.5 rear camber
0 toe front / .20 degrees toe per side in the rear
tires 255 front / 295 rear
spring 450/900
H&R front sway / GT3 rear sway
8mm rake **this could be a contributer to the difference too**
GT3: -2.9 front / -2.4 rear
0 toe front / .20 degrees per side rear
tires 235 front / 295 rear
spring 600/750
OEM sways
20mm rake
Not much difference other than good adjustable shocks on the GT3. The coilover setup on the C2 was H&R's RSS Clubsport version. The actual rates were not stamped on the springs but I confirmed with both their US and German product folks those were the correct rates. They use the same bilstein damper that comes on the GT3 stock for their coilover application. The C2 still drove great and was pretty quick for as simple as the setup was, but had more understeer at the limit and didn't rotate like the GT3 does.
Andy
C2: -3.0 front camber / -2.5 rear camber
0 toe front / .20 degrees toe per side in the rear
tires 255 front / 295 rear
spring 450/900
H&R front sway / GT3 rear sway
8mm rake **this could be a contributer to the difference too**
GT3: -2.9 front / -2.4 rear
0 toe front / .20 degrees per side rear
tires 235 front / 295 rear
spring 600/750
OEM sways
20mm rake
Not much difference other than good adjustable shocks on the GT3. The coilover setup on the C2 was H&R's RSS Clubsport version. The actual rates were not stamped on the springs but I confirmed with both their US and German product folks those were the correct rates. They use the same bilstein damper that comes on the GT3 stock for their coilover application. The C2 still drove great and was pretty quick for as simple as the setup was, but had more understeer at the limit and didn't rotate like the GT3 does.
Andy
#32
Rennlist Member
I have the same setup on my 6GT3, mostly track use. I was at 600/800 but changed after running VIR as the car wasn't transitioning through the S's as well as I thought it should. Much better on the track but definitely a bit stiff on the street....
#36
I went with http://www.hypercoils.com/ after looking around... Seems that they are used by a number of racing series...
Best deals I found were here: http://www.tntperformance.net/main.sc Shipped directly from manufacturer...
Best deals I found were here: http://www.tntperformance.net/main.sc Shipped directly from manufacturer...
#37
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I went with http://www.hypercoils.com/ after looking around... Seems that they are used by a number of racing series...
Best deals I found were here: http://www.tntperformance.net/main.sc Shipped directly from manufacturer...
Best deals I found were here: http://www.tntperformance.net/main.sc Shipped directly from manufacturer...
#38
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Other than making some more room for a wider tire, is there any reason I should go with smaller spring (in terms of diameter)? I was planning on sticking with 60mm I.D so that I can reuse the stock perches.
#39
Lot's of useful information on my suspension upgrade...
#40
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Did you check my thread here? https://rennlist.com/forums/996-gt2-...n-upgrade.html
Lot's of useful information on my suspension upgrade...
Lot's of useful information on my suspension upgrade...