8th Generation Honda Civic Forum - View Single Post

DakRaven · 01-26-2007, 01:05 PM

The spring rate research was done by Mario, I just condensed it for future reference. I am still looking into determining the Si Sedan rates.

There are different HFP kits for the different models and trims due to weight and weight bias.

For example: The Sedan has two versions; 08W60-SNA-100A and -100B. A is for the Auto trans and B is for the Manual due to different spring rates. The manual is 65lbs lighter in the nose than the Auto so the front springs have less rate compared to the slushbox.

For the Coupe, there are also two versions; Si (08W60-SVB-100) and non-Si (08W60-SVA-100). The Si Coupe is a heavy pig (2877 lbs, compared to the EX Sedan at 2804 lbs). Weird huh? It has the largest sway bars and the highest spring rates. (The front Sway is even larger than the SI Sedan).

That being said; you can get more drop and a softer ride by putting the Sedan kit on the Coupe. Bottoming out, however, could occur more often with this setup.

Another way to reduce wheel gap is to install a taller tire. The Si tire is a 215/45-17 and measures 24.618" tall. My Accord has 215/50-17 tires that are 25.465" tall. Bye-bye gap, hello ground clearance. It looks dropped even though it is not.

Sorry the pic is so bad, I'll get some better ones over the weekend.

This is a 2006 EX Sedan with Si Sedan front suspension and stock springs with HFP dampeners in the rear. Needs a shorter/stiffer spring and a little more bar for the back, but this little jewel will actually handle for a daily driver.

Hope that clears some things up.

01-26-2007, 01:05 PM	#56 (permalink)
DakRaven Member Join Date: Sep 2006 Location: Atlanta Posts: 71	The spring rate research was done by Mario, I just condensed it for future reference. I am still looking into determining the Si Sedan rates. There are different HFP kits for the different models and trims due to weight and weight bias. For example: The Sedan has two versions; 08W60-SNA-100A and -100B. A is for the Auto trans and B is for the Manual due to different spring rates. The manual is 65lbs lighter in the nose than the Auto so the front springs have less rate compared to the slushbox. For the Coupe, there are also two versions; Si (08W60-SVB-100) and non-Si (08W60-SVA-100). The Si Coupe is a heavy pig (2877 lbs, compared to the EX Sedan at 2804 lbs). Weird huh? It has the largest sway bars and the highest spring rates. (The front Sway is even larger than the SI Sedan). That being said; you can get more drop and a softer ride by putting the Sedan kit on the Coupe. Bottoming out, however, could occur more often with this setup. Another way to reduce wheel gap is to install a taller tire. The Si tire is a 215/45-17 and measures 24.618" tall. My Accord has 215/50-17 tires that are 25.465" tall. Bye-bye gap, hello ground clearance. It looks dropped even though it is not. Sorry the pic is so bad, I'll get some better ones over the weekend. This is a 2006 EX Sedan with Si Sedan front suspension and stock springs with HFP dampeners in the rear. Needs a shorter/stiffer spring and a little more bar for the back, but this little jewel will actually handle for a daily driver. Hope that clears some things up. Last edited by DakRaven; 01-29-2007 at 03:46 PM.