Hi I have a 1993 Rx-7, I have h&r springs with tokico illumina 5,
this setup was using the stock wheels and they worked fine. Now I change my wheels to 18' and they rub a lot on the inside and when I take turns. I was planning on buying the coil over system but dont know if it work or not. I know i can play with the height of the car but the ride is going to be rough?? I really want more info specially on this brand thanks!!!!!!

 

Good or bad? How about "fake"? They're not real coilovers -- they're mainly for looks. No respectable hard-driven car is gonna have them.

 

steve kan has GC coilovers...at least last i heard....nuff said

 

And? And?!? His car is pretty much a straight-line car -- it's not required to have a reliable one-piece strut/spring coilover unit. You won't find track cars like Amemiya-san's or PanSpeed cars running sleeve "coilovers."

 

Hahaha... well I guess it really just depends what he wants to do with his car. Maybe it's a straight line kinda car, heh. If all you want to do is be able to adjust ride height and minimize rubbing then Ground Control coil overs are an ok solution without spending too much.

 

M2 raced for several years with this setup. I am not saying that "true" coil-overs aren't better, but just that you can get good performance with the GC kit. And I certainly like knowing the rates and damping characteristics of my springs and shocks better than buying a set that has a mystery combination, which seems to be the case with many of the big-name aftermarket setups.

Another option to consider at the low end is coil-over converted Konis from Tri-Point. The MazdaSpeed coil-over kit is pretty nice without being expensive, and the Advance Design kit from M2 seems to be the "sweet spot" for a really nice setup without breaking the bank.

-Max

 

I have been looking at the GC/Advance Design kit from M2. It is a true coil-over with dual adjustable shocks. They use linear rate springs of your choice.

BTW: Who is DK and why does he post like a know it all dick???

 

ACTUALLY...steve's car is not at all a mainly straight forward/drag racing car. DK - do a search on posts by pluto and ask around...you will find out for yourself that this is the case.
dont assume that just cause hes fast on the strip means he cant turn.....

and to the rest of you, i agree there are better and more expensive options apart from the M2/GC coilover conversion kit. the AD/M2 coilovers are a real gem from what ive heard......if i had the cash those would be the ones i would pick up.

all in all, the GC coilovers are not bad at all....an AWESOME entry/low cost setup. also look at the truechoice coilover kits.....very nice and not so pricey as well (no upper mounts though). i will probably go with the GC but i cant decide between the bilsteins, tokico, and konis to use with them.

any suggestions thataways??

 

Know it all dick?!? Fine, go ahead and slander me ... hide behind your moderator label, nine-legged asparagus baboon fetus dingleberry.

 

I didn't say he can't turn, I said his car is pretty much a straight line car. I know about him, and I've seen the pictures. That's fine and dandy ... my point was, is, and shall remain -- you won't see Amemiya's cars and the occasional cars that manage to keep up with his running sleeve "coilover" kits. It's that simple. I'm not trying to be a jerk, and I don't understand why people can't let me have my own opinion/conjecture on this matter ... which is backed up by road track times.

I'm not a jerk! I promise!! I'm a really nice person! I think I just come from a different angle than most everyone on this board and perhaps (but not assuming) my knowledge of products/car culture that don't really make it to the USA makes it hard for some to swallow. I'm not sure what it is, but it seems a lot of people have a problem with me not biting into the "clique" of the same US formula -- M2 intercooler, Racing Hart wheels, Pettit Unlimited ECU, C-West kit, etc. You know what I mean -- a lot of the cars on this forum have the same stuff on them. And while people have said most everything on this board has an element of humor to it and there are a lot of jokes, I really can't find them. I dunno ... I'm a really funny person in real life and I'll laugh at a fence post, but I have to hide humor here for the most part because I'll get attacked. I just don't understand, man!

 

DK,

Not everyone is trying to build the ultimate, cost-no-object road racing car, so compromises such as sleeve-type coil-overs make sense sometimes. This construction is clearly not as good as threaded body coil-overs, but it is cheap, servicable (replace some cheap shocks, keep the rest), and can be a very good match for a lot of buyers' needs.

Also, shock dyno info is available for Koni yellow, GAB super-R, and stock R1 shocks. Information about the big tuner companies' coil-over kits (at this price range; HKS, A'PEXi, TEIN, etc.) is less available, so it is more a gamble about how well they are going to work for your needs. Are these the alternatives you are suggesting?

If you want to share some info, I am certainly interested. But if the extent of your recommendation is "don't get them because RE is fast, and he would never run them" that doesn't help much -- it is only your opinion about what someone else might or might not do! I think the fact that M2 did run them successfully does indicate that they can be a decent road racing setup.

The GC conversion kit are real coil-overs (so are the stock shocks/springs) and have benefits (spring selection, increased wheel clearance, ride height adjustment, opportunity for corner balancing) that are not trivial. You can't easily see them on the car, so they aren't very impressive from the looks standpoint. Your bias against them seems ill-founded based on the information that can be read on this page. If you have more info, share it!

I am not trying to be a dick, I just strongly disagree with your assessment of this product. And yes, I do have them on my car. ;-) I considered several options, and these proved to be a good solution for me. I am trying to build a car that works well rather than being simply unique. It happens to include some of the "clique" parts because some of them do work well. There is a fair amount of variety on this board, so you are probably not as different as you feel. Witness all the debate about M2ICs versus FMICs, different turbos, drag racing versus road racing (okay, not a lot of road racers here), etc. Sometimes there just aren't a lot of alternatives available (e.g. C-West light kit).

What do you do with your car? What suspension are you running? Why did you choose it, and what has your experience with it been like?

-Max

 

... and your dingleberry comment was funny and Jef's sig is hilarious. ;-)

-Max

 

They are not fake...just because the threads are not on the shock body...The are a very good alternative to spending say...what $2K. I got them (sitting on my garage floor) but I purchased them on recommendation from other ppl that do some SCCA type stuff. Sure I would rather get some advanced m2 kit or the big buck Ohlins or something...but $$$$

 

I must be missing something here but why does it matter if the shocks are threaded? The way I see it, you need a certain spring rate (depending on application) and shock valving to match the spring rate. If this is done properly the car should handle quite well. Whether you have a "fake" or "real" set of coil overs you can still corner balance the car, right? So what exactly are the advantages of a compete, "real" coil over setup? Look at what Peter did to all those other supercars with super setups.... and he was only on lowering springs and a set of Konis!

 

The unsprung part of the shock can be lighter, the pistons can be bigger, and the cooling can be better if the shock body is threaded rather than using a sleeve. But of course, the match and the price are more important than any of these in the likely use of the setup on a street/track car, as opposed to a full-on race car.

-Max