Handling

[Ewheels]

I'm just about to push the send button on the frpp track pack. Haven't heard any real negatives yet.

You'll be very happy.
Are you getting only the shocks or the full kit? My only gripe with the full kit is it comes with progressive springs rather than linear. A great combo would be Ford Track shocks with BMR Handling springs

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[Doug T]

Well I was getting the full kit....... Tell me more

 

[Ewheels]

Well I was getting the full kit....... Tell me more

Progressive springs are great for a street car because the lower rates will absorb the bumps and cracks in the road making for a more comfy ride while still be stiff when you push the car.
Linear springs are exactly that, linear rate. They will be just as stiff putting around town as they will be when pushed. So less comfortable when getting groceries but in the canyons, they will be much more predictable and you'll know what the car wants to do or will do given a certain input.
Progressive = street priority. Linear = performance priority

Also, the kit comes with a bunch of other goodies which are great, but I don't think all are needed. It also doesn't come with camber plates which offer huge gains to cornering ability.


Edit: Ford also won't release the spring rates for their progressive springs which bothers me. I like to know the exact spring rate so you can calculate the motion ratio and ride frequency to really see how stiff the car will be.

 

[Doug T]

I don't want this to become like a "What's the best oil thread" but which linear springs and why. Also I'll never track it so I don't want to get beat up in the street, thanks.

 

[Norm Peterson]

I don't want this to become like a "What's the best oil thread" but which linear springs and why. Also I'll never track it so I don't want to get beat up in the street, thanks.

You probably want the Steeda Min Drop Linears. 200 lb/in vs 165-ish stock front, 800 vs 728-ish stock rear. About 10% ride frequency increase up front, ~5% out back, which isn't a lot.


Norm

 

[Ewheels]

I don't want this to become like a "What's the best oil thread" but which linear springs and why. Also I'll never track it so I don't want to get beat up in the street, thanks.

I use the BMR Handling springs simply because they are the stiffest springs available without going coilovers. This combo is about the closest you can get to GT350R setup. The Steeda Dual Rate springs are actually stiffer but their resulting ride frequency is way off from ideal.

If you came from Miatas and WRX's, this package will be fine. It's not excessive or overly harsh on the street. It's direct and sharp and that's what I like in a performance car

 

[Doug T]

Any body know the rates of the FRPP springs?

 

[Roadway 5.0]

You'll be very happy.
Are you getting only the shocks or the full kit? My only gripe with the full kit is it comes with progressive springs rather than linear. A great combo would be Ford Track shocks with BMR Handling springs

FRPP track and street springs are linear front, dual rate rear. The rear resides in a fixed linear rate while operating.

OP, my opinion for a primarily driven street car is to go no higher than 200/800 on spring rates and pair with good dampers. FRPP doesn’t publish rates, but I suspect the track bits are close in the front and likely 10+% higher in the rear. Regardless, I have rarely heard a bad thing about this kit if you go that way.

The Eibach pro kit is at 200/800 and both Steeda’s and BMR’s minmum drop springs are close. I went with FRPP street springs, Bilsteins, and big bars — ride is excellent and it does everything I want and more on the street.

 

[Ewheels]

FRPP track and street springs are linear front, dual rate rear. The rear resides in a fixed linear rate while operating.

Are they really?? I thought this entire time they were progressive
I wonder where I got that from

 

[Doug T]

Sent hit. Don't want analysis paralysis. Thanks for all your input guys.

 

[Roadway 5.0]

Are they really?? I thought this entire time they were progressive
I wonder where I got that from

I thought they were progressive for years—it was the forum/internet consensus for sure.

I researched them more in depth when swapping springs again. Sure enough, linear front and dual rate rear. Blew my mind. Here’s a video of a Ford Engineer mentioning linear (2min mark):

 

[TeeLew]

I use the BMR Handling springs simply because they are the stiffest springs available without going coilovers. This combo is about the closest you can get to GT350R setup. The Steeda Dual Rate springs are actually stiffer but their resulting ride frequency is way off from ideal.

If you came from Miatas and WRX's, this package will be fine. It's not excessive or overly harsh on the street. It's direct and sharp and that's what I like in a performance car

I think a good combo might be that Steeda Dual front (which is functionally a 350 #/in linear spring) and whatever works on the back to balance it. At the end of the day, what happens on the stop watch is significantly more important than a ride frequency calculation. Those calculations are better used as a path of where you've been as opposed to the path of where you're going.

Stiffening the front spring with a spring rubber (which also raises static ride height) was a pronounced handling improvement in my car. My next step on front spring will be significantly more (probably 400-450 #/in). As long as the damping is there to support it, the stiffer front spring is not that big of a deal for me on the street, but I might change my tune after a large increase in rate.

 

[dman]

While the pp1 may be a "Mild" upgrade, I sure am liken' those big Brembo's and that Torsen 3.73. I like the idea of attaching the back to the car. So go all in you say? Is there a preferred method to take? I read about shearing bolts and/or drilling bushings which I'm not afraid to do. However, if the reward isn't worth the time and effort......

Ford Performance will tell you...suspension was not a priority in PP1 package. More about brakes, diff, radiator etc.

 

[Ewheels]

I think a good combo might be that Steeda Dual front (which is functionally a 350 #/in linear spring) and whatever works on the back to balance it. At the end of the day, what happens on the stop watch is significantly more important than a ride frequency calculation. Those calculations are better used as a path of where you've been as opposed to the path of where you're going.

Stiffening the front spring with a spring rubber (which also raises static ride height) was a pronounced handling improvement in my car. My next step on front spring will be significantly more (probably 400-450 #/in). As long as the damping is there to support it, the stiffer front spring is not that big of a deal for me on the street, but I might change my tune after a large increase in rate.

Fair enough. I'm sure the dual rates work just fine but with no experience with either prior to purchasing, I followed the math

 

[Doug T]

Good to know and exactly what I feel. If this track package isn't what I'm looking for, in the future I'll just go a little stiffer on the springs as to not overpower the dampers. I gotta tell you though, the roads around here are pretty meh. So for the few times a year I get to wail around on some perfect tarmac I have to keep it real.

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