Johnf7

Ive got koni yellow struts on the way for my FD.
Im going to run standard springs with 235 / 40 R17 tires on the front and 255 / 40R17 on the rear.

I know there are 3 ride heights that can be used with the koni's, but what setting will work with no rubbing?

Any help appreciated....

Mahjik

iTrader: (1)

Start with the middle perch and try it. If that doesn't work then just raise up the car and try another setting. A lot of people when using stock or Eibach springs use Front=Middle and Rear=Low.

gracer7-rx7

iTrader: (16)

Actually, I think most people use the highest perch on the front and middle in the rear. I did with my H&R springs on the Konis.

With the stock springs, I tried the Konis at all three perch heights. The highest perch is about the same as the stock height. The lowest perch is about 1" lower and had the car sitting too low. It would scrape on driveways and such in the areas that I frequented. The middle perch was a good compromise when using the stock springs giving you a little bit of lowering while not setting the car overly low.

Your experience may vary depending on road conditions and such around you. I'd suggest starting at the middle perch if you are using the stock springs and want a little bit of lowering. If you have aftermarket springs, start at the highest perches and adjust if desired.

Might also want to search as there are similar threads out there.

gracer7-rx7

iTrader: (16)

read DamonB's experience with spring perch height
https://www.rx7club.com/showthread.p...=spring+length

Mahjik

iTrader: (1)

H&R springs are quite it bit lower than the stock springs.

Johnf7

Thanks guys

Gracer7, thanks for the link. I did search but the keywords I used didn’t return that thread.

To start, im going to go with highest height setting at front, and middle at the rear. I will update

gracer7-rx7

iTrader: (16)

Yes they are. I read that wrong.

rotarymaz

iTrader: (1)

When I got my FD a couple of weeks ago, it had Racing Beat springs w/ Koni yellows set at middle setting all around. The car was rubbing so bad it eat through the fender liners and was rubbing into the wiring harness with stock tire and wheel! Setting the Koni on high for both front and rear didn't solve the problem. So I switched out the RB springs last weekend with stock ones and set the Koni at middle setting up front and low at the rear. The car now rides much better with a good stance that doesn't rub.

During my research I found that alot of people was having the same tire rubbing problems with using after market lowing springs w/ Koni yellows. Most were using the Koni at middle or low setting and the combination of the lowering from the Koni and springs is usually too low. Of course result may vary depending on your vehicle setup. One solution I read was to replace the rub mounts, which over time can be squash and cause the car to be lowered a little. The new mounts will give you that little bit of height back and help with the rubbing issue. The bad thing is, the new mounts are ~$75/ea and you can only order them from Mazda. My advise is, if you're going to use Koni yellows with lowing springs, best bet is to set it at the high setting for both front and rear. If you're going to use it with stock springs, middle up front and low in the rear goods great.

Johnf7

@Rotarymaz, thanks! Just a quick couple of questions; do you get any rubbing under hard breaking, cornering? Or do you just use it for normal street driving?

From your avatar it looks like your on stock alloys?

rotarymaz

iTrader: (1)

With my current setup, I haven't notice any rubbing. I did some hard braking and cornering at a parking lot after I go the stock springs on and didn't notice any rubbing. I'm currently running stock wheel/tires, but am planning on putting in 235/40 18 all around and it looks like it shouldn't be a problem with the current clearence. I use the car mainly for street driving and really like my current setup. It's low enough where it doesn't have the huge stock wheel well gap, but high enough to avoid any rubbing issues. I'm sure glad this setup is finally working for me, because it was a pain adjusting the shocks and changing the springs. Not hard, just very time consuming. (BTW, pic in my avatar is when the car had RB springs, it sure looked good parked, but it was rubbing really really bad)