997.2 Carrera lowering
04-08-2018, 03:13 PM
#1
Racer
Thread Starter
997.2 Carrera lowering
hello all,
I’ve been given an opportunity to have lowering springs installed and I was wondering weather spacers were needed or not and if so what size.
Not doing it for looks but for handling.
My primary driving is done ACH and hoping to do an occasional track day.
Thanks in advance
I’ve been given an opportunity to have lowering springs installed and I was wondering weather spacers were needed or not and if so what size.
Not doing it for looks but for handling.
My primary driving is done ACH and hoping to do an occasional track day.
Thanks in advance
04-08-2018, 04:40 PM
#2
Rennlist Member
Spacers only for aesthetics. Lowering changes suspension geometry. You WILL need rear adjustable toe links to keep rear toe in check. OEM toe link eccentric bolt doesn’t allow enough change.
04-09-2018, 01:45 AM
#4
Nordschleife Master
That's how I always thought about spacers but now that you spelled it out I started thinking. A wider track has to have a positive impact on stability. No? I realize we're talking technicalities here with 5mm and 7mm spacers but I just can't imagine that (in theory) a 5' wide 997 GTS would be capable of the same lap time around a track as a standard 6' wide 997 GTS all other things being equal. I think both the GT3 and the GT3 RS are delivered from the factory with wheel spacers. Could well be for aesthetics only but then, why don't they do it with all models instead of just the track oriented cars? Or better yet, why don't they just fix the offsets where it looks good without spacers to begin with? The GT3 cars have different wheels than the rest anyway.
04-09-2018, 02:15 AM
#5
Rennlist Member
That's how I always thought about spacers but now that you spelled it out I started thinking. A wider track has to have a positive impact on stability. No? I realize we're talking technicalities here with 5mm and 7mm spacers but I just can't imagine that (in theory) a 5' wide 997 GTS would be capable of the same lap time around a track as a standard 6' wide 997 GTS all other things being equal. I think both the GT3 and the GT3 RS are delivered from the factory with wheel spacers. Could well be for aesthetics only but then, why don't they do it with all models instead of just the track oriented cars? Or better yet, why don't they just fix the offsets where it looks good without spacers to begin with? The GT3 cars have different wheels than the rest anyway.
on track at limits, yes, you can change driving dynamics of a car with spacers to either induce over or understeer via delta in front or rear track width. it also changes suspension geometry including scrub radius which will be the most noticeable with intensity dependent on other alignment settings (caster, camber, toe).
OP, is it "for a show" or for handling on "occasional track days" ... pretty much the exact far ends of the spectrum there.
04-09-2018, 12:11 PM
#6
That's how I always thought about spacers but now that you spelled it out I started thinking. A wider track has to have a positive impact on stability. No? I realize we're talking technicalities here with 5mm and 7mm spacers but I just can't imagine that (in theory) a 5' wide 997 GTS would be capable of the same lap time around a track as a standard 6' wide 997 GTS all other things being equal. I think both the GT3 and the GT3 RS are delivered from the factory with wheel spacers. Could well be for aesthetics only but then, why don't they do it with all models instead of just the track oriented cars? Or better yet, why don't they just fix the offsets where it looks good without spacers to begin with? The GT3 cars have different wheels than the rest anyway.
It's more complicated than just spreading your feet apart to get better balance. Theoretically, wider could be more stable, but spacing the wheels farther apart is changing the suspension geometry like nwGTS mentioned. All the suspension points are still the same so it will have an effect on weight jacking and other things.
04-10-2018, 10:56 AM
#7
Racer
Thread Starter
yea, i should revise my statement. positive or negative it definitely will change how your car drives when at the limit. on street it's aesthetics.. but toe link on street will be noticable.
on track at limits, yes, you can change driving dynamics of a car with spacers to either induce over or understeer via delta in front or rear track width. it also changes suspension geometry including scrub radius which will be the most noticeable with intensity dependent on other alignment settings (caster, camber, toe).
OP, is it "for a show" or for handling on "occasional track days" ... pretty much the exact far ends of the spectrum there.
on track at limits, yes, you can change driving dynamics of a car with spacers to either induce over or understeer via delta in front or rear track width. it also changes suspension geometry including scrub radius which will be the most noticeable with intensity dependent on other alignment settings (caster, camber, toe).
OP, is it "for a show" or for handling on "occasional track days" ... pretty much the exact far ends of the spectrum there.
thanks
Trending Topics
04-10-2018, 11:24 AM
#8
Rennlist Member
That’s a good thousand dollar gift there including labor and parts plus alignment. Buy the toe rod parts yourself and have them install them at the same time or even after is fine. One man’s advice.
Wish I had the same problem.
Wish I had the same problem.
04-10-2018, 11:51 AM
#9
Racer
Thread Starter
i just don’t want to ruin an already nice car and be the guy with mods that destroy all that make the car good.
The only thing I’ve done to it is a sharkwerks center pipe, pie plenum and BMC filters. And I figured that would uncork it a bit.
Thanks
04-10-2018, 02:01 PM
#13
Racer
Thread Starter
04-11-2018, 12:42 AM
#14
Rennlist Member
hard to provide advice on a prototype.
