TAEnvy

iTrader: (2)

Im about to do my Koni and BMR spring install and I wanted to see if anyone has installed their springs (any lowering springs) on the Koni lower perch, couldnt find anything searching.



Wanted to see pics and hear any feedback owners have.

SuperSport01

Koni/BMR on the lower circlip perch will be slammed like a car with Sportline springs. I would highly suggest the JasonWW upper mount mod if you decide to go with the lower perch.
https://ls1tech.com/forums/suspensio...ock-mount.html

TAEnvy

iTrader: (2)

Yah I plan on doing that even if I run them on the top perch.

TAEnvy

iTrader: (2)

Anyone?

dws6

Not BMR but this is the Koni's lower perch with strano springs which should look the same as the BMR. when I did the top perch the front sat higher in relation to the rear even with the rear isolators in.

SuperSport01

Strano's sit high in the front whereas BMR's sit level to slightly nose down. The BMR's will be down about .5" in the nose compared to the rear when on the lower perch. Hose mod the rear to compensate.

dws6

You sure about those difference between Strano and BMR heights? Mine sits level with the heater hose mod on strano's so the BMR per your explanation would sit low in the front and have a heavy rake with the isolators in.

Streetlegal?

iTrader: (25)

dws6 that stance is sick. Exactly what I want. Need to do a little futsing with mine. I just dont wanna do the HH mod and have the rear sit lower than the front.

Here is koni/BMR with the konis on the upper perch. No heater hose mod just stock isolators

RevGTO

iTrader: (12)

I started a thread about this with some pics of my buddy's car: https://ls1tech.com/forums/suspensio...ch-hh-mod.html

dws6

Thanks! Your car looks good Legal but I see what your saying. needs the drop in the rear a bit. Yours looks pretty low in the front for being on the upper perch though. I would try the HH mod first and then the lower perch. I think it will look even better. if not, just cut the HH off and put the isolators back in. wont cost you a thing but time.

Streetlegal?

iTrader: (25)

I thought the lower perch was only on the fronts? As far as the HH mod I just don't want the rear to be lower than the front. Doesn't hurt to try though. Car is quite apart so won't be hard. What size are your wheels and tires? I still need to get a spacer for the rears to get them out a little further.

dws6

You are correct. The perch's are only on the front. I was just saying that the rears are easy so start there and do the fronts last.

Mine are F 19x9 w/ 265/35, R 19x10.5 w/ 305/30

Streetlegal?

iTrader: (25)

Well I have the whole engine and k member out of the car right now so the front perch wont be too hard. It's about 1/2" drop that it makes right? I just really don't want the back lower than the front lol.

Ok mine are 18x9.5 275/35 and 18x10.5 315/30

Do you have a stock rear? That rear lip is huge

dws6

Measure between the groves but I think your right, about 1/2".
Factory rear narrowed 2.5" per side.
With the 315/30 the tire is probably taller then mine but your 275 will be taller too. Check your compared heights. Mine are both 26.3" tall

Streetlegal?

iTrader: (25)

My rear tire is 25.5 and the front is 25.6

If the rear profile was 35 it'd be 26.7" Maybe I'll switch up to those when I need new tires. Tires are new though so it'll be awhile.

Are your rear fenders rolled?

dws6

Wow surprising they are almost an inch shorter. Thats about 3/8" to 1/2" lower on the car

Yes fenders are rolled. Had to BFH the inners too

Streetlegal?

iTrader: (25)

I had to BFH the **** out of mine lol. Going to be looking into spacers. I'll try the HH mod on the back and move the perch on the front. Did you do the upper mount mod on the front to get the suspension travel back or no?

dws6

No never heard of that. Got a link? I'll search if not.
It hasn't bottomed out yet which is surprising since there isn't much travel left. Unless of coarse you just can't tell when it does.

Streetlegal?

iTrader: (25)

https://ls1tech.com/forums/suspensio...ock-mount.html

Streetlegal?

iTrader: (25)

Just got my car off the lift for the first time in about a month. Have BMR springs and Konis on all 4. I did the HH mod in the back and moved the konis to the lower perch on the front.

I have a small spacer for the front (5mm I think) that is currently on the rear while I wait for my 15mm hubcentric spacers to get here for the rear. Should settle a little bit more but I'm liking how it looks so far. Measurements are:

Front:
Ground to top of wheel well 26"
Ground to front rocker 5.25"

Rear:
Ground to top of wheel well 26.5"
Ground to front rocker 5.5"

And the pics
http://i855.photobucket.com/albums/a...ps7bdc845d.jpg
http://i855.photobucket.com/albums/a...ps358504cb.jpg
http://i855.photobucket.com/albums/a...ps2f3f3ce1.jpg

Had to do direct links since I ran out of photobucket bandwidth for the month. Will post new pictures when I get the spacers on and everything settles.