VGLNTE1

600/500, 700/600, or 800/700?

redtopz

I've tried a few. I like the LG 700F/600R setup. I accidentally ran them in reverse for a few races (long story) and other than my splitter scraping the track I couldn't really tell any difference and my lap times were about the same . However, since my splitter was scraping, I ordered 800 lb front springs to stiffen up the front and that's when I discovered my mistake when I saw the 600 lb springs in front. I decided to try leaving the 700 lb rear springs and installing the 800 lb fronts. The car handled very well overall and the splitter no longer scraped, but since my shocks are not adjustable, the car bounced around in bumpy sections and lost grip. Now I'm going back to the original 700/600 setup. I don't feel like forking out a bunch of cash for adjustable shocks. Hope that clears everything up!

RX-Ben

How did the 700/600 setup like the bumpy sections?
It is such a big difference vs the DRM setup.

redtopz

It's fine and we have some really bumpy tracks out here. The key is the shocks need to match the spring rates. If I had adjustable shocks then I would probably run 800/700 on my ST2 car with full aero.

Even with no aero, my C5Z ran great with the 700/600 springs. But now I'm running my C5Z in T1 and it runs great with that setup too. I don't know why, but the spring rates don't seem to make a huge difference as long as the shocks are matched to what you have. That's been my experience and I've tried several different setups including Pfadt coilovers too.

VGLNTE1

Do you prefer the LGs over pfadt?

Im trying to figure out what to run while on the track, but dosnt fly off the road when i drive on the street. I will have a full splitter, undertray, and 70" in wing

mountainbiker2

LG 700f. 550r.

redtopz

Well, I would say I prefer the spring rates that came with the LG's. I had the older pfadt coilovers with softer front springs. I also like the clevis style shock mounts with the LG bilsteins, but the downside to me is the very short travel the LG's have and the low ride height. I don't know what your budget is. If it's low then I would keep an eye on the Parts F/S threads and try to find a 2nd hand set of adjustable coilovers. You can get springs pretty cheap. You will probably want to be in the 700-800 lb rate in front and 600-700 in back with full aero. If you have money to burn then get some Penske triples with clevis style mounts and whatever springs you want. You can compensate for softer springs with stiffer sway bars and visa versa. When in doubt, run the T1 sway bars.

That makes sense for auto-x with the lower speeds and 2nd gear traction demands.

PushinTheLimit

I'm very close to pulling the trigger on a set of LG GT2 coilovers myself. I'll be running full aero on my C5Z and have been debating what spring rates I would want. I've seen a few 700/600 setups but always wondered if I should go to a 800/700. Decisions, Decisions...

VGLNTE1

I was just looking at the GT2s as well. But when i mentioned to the vendor what i had, they suggested the GT1 coils. He said the gt 2's were a good beginner type.street shock

GettReal

Moton ClubSport Double Adjustable Coilovers - Eibach 700# rear 800# front


I had the penske 7200's and I just couldn't get any spring rate to feel right but when I got the motons, they feel great with the above rates.

PushinTheLimit

Do you mean the G2 coilovers? I don't see anything on GT1 coilovers.

RX-Ben

The G2s are a higher quality shock than the GT2s. Just get them revalved if you are upping the spring rate.

BERETTA

I am running the LG GT2's, they come with 700 front and 600 rear. I discussed with LG about changing spring rates when I put aero on the car, they recommended going 800 frt and 700 rear. I decided to go with what I had. I have only one race with the aero, but my initial impressions are that it is not going to be necessary to increase the spring rates. At 147 mph I had no issues at all, I have high speed photos of the car at 125mph with very little change in static height front or rear....

VGLNTE1

do you think the 700/600 would be to bumpy for the street?

VGLNTE1

Sorry, just GT. Here is what he said.

If you are running a lot of aero then you will really need to step up to the LG GT coilover. The GT2 is a excellent entry level coilover and it sounds that you are past that. So we really recommend moving up to the GT. These are build to order coilovers so we would need a lot more info from you to set these up for your car.
Thanks

93ASP

425F/650R with Penske 8760's and 51% rear weight.

geerookie

Well this will blow everyone's mind..........

Nothing like having what you need instead of just buying what everyone else is using.

I decided a long time ago if I wanted to be competitive (assuming I could drive) the only place I wouldn't make a compromise was on the shocks and springs. I also run the Penske 8760's and Hyperco springs.
The shocks/springs are tied with the tires for the most important parts on a race car to go fast in my opinion.

Tires and springs/shocks make the difference! Get this right on an ST2 car and you won't need but a tiny bit of aero to be at the top of the pile

PushinTheLimit

I'd love to have a set of Penske's... but just don't have the budget for it.

redtopz

I agree. I am confident my car will do well with 700/600 and the sway bars I'm running. I realize I could just re-valve my shocks, but I don't think it's necessary right now. BTW, the 700/600 rates were not too bumpy on the street. As long as the shock rebound rate matches the springs it should be smooth.

Yes, that is what I have noticed going to the T1 car. It has tremendous grip with no aero and the springs are relatively soft with stiffer sway bars. GM set it up quite well. The stiffer front rates on the LG coilovers help a bit I think and you will need stiffer springs with downforce. But I wouldn't stress too much between 100 lbs plus or minus as long as the shocks are valved (or adjustable) for your springs.

geerookie

Save your money and run what you have until you can afford them.
If you are serious about going fast they will be the best investment you make for a race car.