Boss front springs + 55D rear springs?

[Fun4me]

Koni Sports

do you have/need any other mods to run the P springs.

 

[corruptor]

I have GT500 mounts since the konis I have are the older 05-09 model.

I'm also running adjustable panhard bar, but truth be told it wasn't necessary since my rear axle didn't shift with a 1" drop.

You may need LCA relocation brackets, depending on whether you want to get rid of the rear end squat, which will be more pronounced with a rear spring drop. The reason is the rear lca mounting point becomes lower than the front, causing rear end to squat under launches and hard acceleration. For what its worth, I could probably deal with the squat if I didn't just get a blower installed.

 

[Fun4me]

I have GT500 mounts since the konis I have are the older 05-09 model.

I'm also running adjustable panhard bar, but truth be told it wasn't necessary since my rear axle didn't shift with a 1" drop.

You may need LCA relocation brackets, depending on whether you want to get rid of the rear end squat, which will be more pronounced with a rear spring drop. The reason is the rear lca mounting point becomes lower than the front, causing rear end to squat under launches and hard acceleration. For what its worth, I could probably deal with the squat if I didn't just get a blower installed.

So for a DD w/shitty roads maybe the Boss springs will be better that the P springs? With the +11 yellows, I might not need anything else.
What kind of wheels/tires u got?

 

[corruptor]

Stock brembo package wheels and tires. If you don't want to do other mods to correct the suspension geometry and are worried about being too low, then your best options will be: Stock GT springs, Boss springs, P springs - in that order

 

[Fun4me]

Stock brembo package wheels and tires. If you don't want to do other mods to correct the suspension geometry and are worried about being too low, then your best options will be: Stock GT springs, Boss springs, P springs - in that order

Almost wondering if the brembo springs are ok for the price(free).

There isn't that much differance between the spring rates of the Boss and brembo. To justify the $200 cost.

 

[corruptor]

I have a set of brembo springs if you're interested

 

[Fun4me]

I have a set of brembo springs if you're interested

Thanks. ME 2

Whats the rate differance between the boss and brembo?

 

[TheVikingRL]

Brembo50.com - Car Specs & Info

Base GT
123 lbs. 156 lbs.

Brembo
131 lbs. 167 lbs.

Boss 302
148 lbs. 186 lbs.

Laguna Seca
137 lbs. 191 lbs.

 

[Fun4me]

P spring rates?

 

[Fun4me]

WHat about oem Boss front and oem brembo rear springs, will that ADD to the rake? With the 7/8" drop in the front and no drop in the rear will this setup need relo brackets?

 

[corruptor]

WHat about oem Boss front and oem brembo rear springs, will that ADD to the rake? With the 7/8" drop in the front and no drop in the rear will this setup need relo brackets?

Probably will not add any noticeable visual rake (the 1mm Boss rear spring drop is pretty much irrelevant). Will not need relocation brackets, since you are not affecting the rear control arm suspension geometry.

 

[Fun4me]

Probably will not add any noticeable visual rake (the 1mm Boss rear spring drop is pretty much irrelevant). Will not need relocation brackets, since you are not affecting the rear control arm suspension geometry.[/QUOTE
Sounds like a plan. No panhard either?

 

[corruptor]

Nope, no need for an adjustable panhard rod either. Having said that, aftermarket adjustable panhard rods have stiffer bushings that help keep the rear end from shifting during bumps (I noticed a big difference from the stock bar, and while it wasn't as much of an enhancement as my previous Watts link setup, I'm glad I have the stiffer bushings as the rear feels much more planted).

 

[Fun4me]

Nope, no need for an adjustable panhard rod either. Having said that, aftermarket adjustable panhard rods have stiffer bushings that help keep the rear end from shifting during bumps (I noticed a big difference from the stock bar, and while it wasn't as much of an enhancement as my previous Watts link setup, I'm glad I have the stiffer bushings as the rear feels much more planted).

What about a panhard bar and BRACE? Does that stiffen things up almost as much a watts? For a DD.

 

[corruptor]

It'll make a noticeable difference but won't be anywhere near as stiff as a watts link setup

 

[Fun4me]

It'll make a noticeable difference but won't be anywhere near as stiff as a watts link setup

So for a DD is a Watts overkill?

 

[Fun4me]

So, Lowering the front 1" doesn't require any other supporting mods.
What about a P spring front and oem Boss rear spring(or Brembo)? Any body try this?

 

[Grant808]

So, Lowering the front 1" doesn't require any other supporting mods.

Well. your camber is going to change...and for a DD, having -1.4 degrees might kill the inside edge of your tires.

What about a P spring front and oem Boss rear spring(or Brembo)? Any body try this?

I haven't heard of anybody doing that yet. Should work okay if you are still getting the Konis. Do you have a base or Brembo GT?

 

[Fun4me]

Well. your camber is going to change...and for a DD, having -1.4 degrees might kill the inside edge of your tires.



I haven't heard of anybody doing that yet. Should work okay if you are still getting the Konis. Do you have a base or Brembo GT?

Brembo.

A one inch drop gives you -1.4? That can't be adjusted w/ an alignment w/o the use of cc plates/bolts?

 

[Grant808]

Brembo.

A one inch drop gives you -1.4? That can't be adjusted w/ an alignment w/o the use of cc plates/bolts?

I already had camber bolts in when I switched to P springs...so I didn't measure it as-is. I'm pretty sure I've read that and if I bolts do the +/- 1 degree...I know that maxed out my camber is -2.4 or -2.5.

There is a trick to change the direction of the upper mount (180 degrees, I think), but I'm not sure how much it changes.