Hi I'm changing my setup this winter. I would like to get some advice on what spring rates to go with.
The setup will be a 93 civic Si hatchback with a H2b swap running itr sway bars front and rear I'm going to be using a ground control/koni setup. The car is a track only vehicle.

My question is what spring rates should I use?

 

No recommendations on spring rates. However I'd recommend a smaller front sway bar. The ITR front is 24mm... I think the jdm bar is 25mm. If you are going to run a front, stick with the eg front which I believe is 21mm.

 

The OTS konis are rumored to only handle up to 600lb springs.

That being said....450front 600rear


otherwise I know that the real racer guys usually run much higher rates on revalved konis.

600 to 1000 front and 800 to 1300 rear

 

The only guys I know who were using the H2B configuration in a track car were the Curpier brothers. I think I remember them having higher than normal front rates, because of the weird weight distribution (more towards the front). I could be remembering that wrong though, as it's been at least a year or two.

Whatever the case, on OTS Konis, there's only so much you can get away with, to the point that your engine choice won't really matter.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93SIRII &raquo;</TD></TR><TR><TD CLASS="quote">Hi I'm changing my setup this winter. I would like to get some advice on what spring rates to go with.
The setup will be a 93 civic Si hatchback with a H2b swap running itr sway bars front and rear I'm going to be using a ground control/koni setup. The car is a track only vehicle.

My question is what spring rates should I use?</TD></TR></TABLE>

I would call Koni, let them suggest a rate (800-ish front, 1200-ish rear, like was already said) and then get your shocks revalved to match that. And, shortened.

You might copy this guy (800f/1200r), his car is quick. Or rather, just buy his car.
http://www.roadraceautox.com/s...19439

-Chris

 

Now, why the hell did you link that forum here? The cat's out of the [freak]ing bag...again

P.S. Chris has a post in the "Racecar FS thread" at the top of the forum

 

800-900F and 1200-1300R
downsize the front bar
upsize the rear bar
:soup:

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stinkycheezmonky &raquo;</TD></TR><TR><TD CLASS="quote">P.S. Chris has a post in the "Racecar FS thread" at the top of the forum </TD></TR></TABLE>

I searched for new threads by 6ghatch and came up empty, so I linked to the one I knew.

 

thanks guys thats some good info, may I ask you to explain why you think the smaller bar on the front after the H2b is in?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93SIRII &raquo;</TD></TR><TR><TD CLASS="quote">thanks guys thats some good info, may I ask you to explain why you think the smaller bar on the front after the H2b is in?</TD></TR></TABLE>

Because it's still a front wheel drive car

You want as much weight on the inside front while you're coming out of a corner. You don't want a front bar trying to lift it. Let the rear try to keep the car flat.

 

thanks for explaining it makes more sense now

 

ok it looks like it will be a ls vtec car instead of H2b due to rule changes in my class. Could I get some advice on what spring rates to use with the b series motor in the EG with ITR bars front and rear. What do you recommend for rates and bars?

 

That's been covered literally thousands of times. Search.

 

The spring rate you choose is also very relative to the track you run on.

1000+lbs on the track I use up here is masochistic.

 

All the prior advice will still work... think of it as a starting point.

 

I've already searched and read alot of threads but I still wanted some more advice.

 

The "more advice" you'll hear will be the same as what you've read.

 

ok

 

ok thanks guys

 

make sure you keep an eye on your oil pressure... wtih my qsd kit i had to run around 6.5 quarts to keep it from starving around corners, ill be building a custom pan when it goes back together.

 

Thanks I'll keep that in mind, I have to go with the ls vtec for now