In looking for springs and coilover kits, I came across the Ground-Control adjustable spring perch setup. Has anyone tried these and if so, what do you think of them?

Chris

 

Those look interesting. Ground Control makes great stuff. Is that $399 price tag for 4?

 

Yes, it's $399 for all 4... Last time I heard, GC was still "testing" on their MINI Cooper setup. When they get them all dialed in, though, it will be a formidable setup with some Koni Yellows (or, if we're really lucky, they'll make some for the Advance Design struts like they do for the E36 M3 - which is a KILLER setup for the track/autocross).

 

They have the MINI setup listed on their website.

 

Advance Design shocks already have a threaded body... I've owned two sets for various cars.

Ground Control coilover sleeves are as good or better than anything on the market - good craftsmanship, good materials, and perhaps most importantly, good quality springs (eibach ERS). The biggest advantage of ordering from them is that you can specify the spring rates that you want.

 

I know they're listed on the site... they've been listed for quite some time. Last time I called them (in January), they said they were still in development... I told them I'd be happy to experiment with spring rates and they said, "We'll keep that in mind"...

If anyone else hears anything different, let us all know!

 

Right... from the sets I have seen, it just looks like a Ground Control threaded body mated to the Advance Design struts. I know they're 'sister companies', though, and I never really looked all that closely at them to see if the bodies were actually threaded or if it was the GC setup on the outside... In any event, they do rock!

 

I see what you mean. I suppose that's necessary with strut-inserts like that. I've only used their products on hondas in the past, and made the, apparently incorrect, assumption they were all similar.

Here's one of my honda sets.

 

I just got an e-mail back from Don Feen at Ground control in regards to availability.

"This is currently only available for race cars with Koni shocks."

 

This is what I would expect. Koni has standardized their shock diameter so adapting the GC's for a new car only requires determining the correct sleeve and spring height.

This isn't really a bad thing since switching to linear springs, and higher spring rates typically requires upgraded shocks anyway.

 

I've been waiting for these. Hope there is more adjustability in the shock swap (I like konis, but would prefer something easier to adjust in the rears). $399 GC + $170 for lowering springs. Might have to compromise.

 

$399 includes springs

 

A couple of suggestions; select the smallest spring length for a given rate. When you do this you'll need to ask if the spring will remain on the perch while in full droop - very important. Smaller springs weigh less and a shorter spring for a given rate as you can imagine is a little less squirely(sp?) between compression and rebound. Even if the smaller spring says put, it will be a bit noisier than a longer length spring. If the noise feels like it will bother you, then select a longer length.

Specify lower perches that clamp around the coil-over sleeve and leave these a tad, just a TAD, lose upon final install. Some of lower perches are one piece and come with an allen set screw

Finally, garden variety Koni single adjustable dampers are at their absolute limit with 400lb/in springs. If you decide that higher rate springs are necessary, you need to ask to have them re-valved to SST - Show Room Stock. They will not last long otherwise.

No lower than an inch, 4" of travel ain't much. Cut 1/3 the bump stop off too.

 

Did I say springs.... I meant $280 adj. rear control arms