ozh_hawaiian

I am gonna upgrade to some full coilovers, and wanted some feedback... Any opinions on Function and Form type 1's? I know alot of guys use progress cs-II,(should i get the 350/250, or 350/350) and am considering them, but wondering how they compare to the F2 type 1's, or the blox street series.
car is a daily driver.
also, I know about koni/gc, and there are plenty of reviews for those, so looking for reviews on the F2, progress, or blox street

grumblemarc

iTrader: (4)

Are we back to this full coilover nonsense? Lemme ask you this, why are you looking for full coilovers and why those two brands? Maybe that would give people a better idea on why you're leaning towards, what the general consensus agrees, are crappy coilovers.

Gustav129

I will say coil overs give you a wheel rate 110% the stated rate, where as conventional springs are actually half of what the rating is.


I will tell you this, a 350lbs coil over is gonna be really stiff. Road Race only Mustangs coil over rates use those numbers, and up to #400.

TunerN00b

Not even close to true. You're never going to find a wheel rate greater than the spring rate on a production car.

Besides that, changing "spring types" (which is wrong, because both are "coil overs") won't change the ratio of spring rate to wheel rate.

Spring rates can not be compared between different cars, due to the different motion ratios between the various suspension designs.

For example, a 600 lbs/in front spring on an Integra is equivalent to a 400 lbs/in front spring on a 2010 Civic (numbers very roughly rounded), due to the radically different motion ratios.

grumblemarc

iTrader: (4)

Wow. I hope you're joking. 350 is S-O-F-T. I ran 450 and it was pretty firm but not harsh.

STOCK_SOHC_DX

For our roads here those rates are kinda soft. Our island is paradise yet our state has no $$ to fix the damn road, and it doesn't help that Hawaii guys like to run their cars low. I myself wouldn't run anything less than 380. For the OP don't waste your time with F&F/Blox due to the fact of failure after the warranty and even before. Better to go with Skunk2 shock and their coilover kits if you want cheap and don't care about warranty after a year.

*edit*

For the price go with Progress CS-2

Gustav129

These are what the engineers/manufacturers (Maximum Motorsports is one) say. But then again, I'm talking about Mustangs, where the spring is in between the LCA and the frame, and the strut is seperate.



[quote=TunerN00b}
Spring rates can not be compared between different cars, due to the different motion ratios between the various suspension designs.

For example, a 600 lbs/in front spring on an Integra is equivalent to a 400 lbs/in front spring on a 2010 Civic (numbers very roughly rounded), due to the radically different motion ratios.[/QUOTE]
Ok, you may have a point there, and most of my racing/coil overs experience is with Mustangs, which are heavier. #400 is really stiff on a heavier car.

I forgot that the newer Hondas have completely different suspension setups as my older Civic.

TunerN00b

Yup, that is unlike the front of any Honda made in the last 30 years (and sold in the US), all of which have the spring over the shock.

That looks to be a form of strut design, which still won't have a wheel rate greater than the spring rate, even if the spring is mounted over the shock.

Heavier cars need to run stiffer springs to achieve the same suspension frequency.

One can never say whether a spring rate of XXX is stiff or not without knowing the motion ratio, regardless of the car's weight. With the motion ration, the spring rates can be converted into the wheel rate, which can be compared only between cars of identical weight. To compare between different weights, the suspension frequency would then need to be calculated for the comparison.

ozh_hawaiian

right on thanks, yea I was talking to a friend of mine to day, and was told not to get f&f, I am probably gonna go with the progress, and hope I can get custom spring rates, cause I was thinking 250 is way to soft for the back, only thing that sucks about the cs-II is you gotta use oem top hats

STOCK_SOHC_DX

Top hats are top hats unless extended anyways. I would either go with the Progress CS-2 drag kit or auto-x. If you can afford it though Koni/GC all the way.

Libertariat

This

Get this "full coilover" nonsense out of your mind. There is functionally 0 difference in a "full coilover" and a "coil over shock" setup. It's all a coil wound over a shock, there is no difference except that the coil is assembled to the shock or welded.

The progress CS-II are "coilovers" but they come in pieces and you have to assemble them, one of the ways they save their customers money is by shipping them by the cheapest method, in pieces.

cody_sandlin

i have a pair of skunkz i think they're call, they re adjustable ones i dont want them they came with the car but ill sell them to you if u or anybody else wants them