Spring rates

[initial_g]

What spring rates are people running? Im currently running 320f/400r and it feels a touch squidgy

[Motorhole]

Well squidgy!

I was running the Koni coilover springs (E36 Compact) on the front and Apex springs on the rear - I think about 340/380 or something. The sump was hitting the road on the dip after lodge corner at Oulton Park and far too much roll.

Swapped to 450 Faulkner springs on the front and back to the Koni rear springs, which are about 450 also I think. Front springs made the world of difference. Back still feels soft, but it's what I had lying around...

BC do custom rate barrel springs on their website. I mean to invest in a pair at around 550lb.

Edit: lots of people rate around 600/600+ but I do still use my car on the road so it seems a little severe. And that much change would really mean revalving the dampers too.

[initial_g]

Cheers chap, im ordering new coilovers I think im going for bc, and they do state they do custom springs with the order cheers mate

[initial_g]

Bc hold in stock the following spring rates
12/12kgs
6/6kgs
10/12kgs
9/8kgs

[steve_k]

graham. if you cant find what you want off the shelf then try these

http://www.coilsprings.co.uk/

worth a try, a mate of mine had a set of springs made by them a while back & they seem to pretty well made.

they even do lightweight titanium "race" springs

[initial_g]

Cheers steve ive ordered 10kg/12kg (560ib/672ib) with the kit from bc. Im hoping this wil be ok

[Motorhole]

I reckon that will be bang on. They claim to valve their dampers to suit and pick matching pairs of dampers using test results. Let us know how they go!

[initial_g]

[quote="Motorhole"]I reckon that will be bang on. They claim to valve their dampers to suit and pick matching pairs of dampers using test results. Let us know how they go![/quote

Had a couple of sessions on them now over the moon with them they do have 20% stiffer cartridges the adjustment is phenomenal hate them very highly and definitely feel better than the gaz a‘a

[DanThe]

Ive changed my rears from 550lb down to 320lb and its made the car a hell of a lot better

[Motorhole]

[rix313]

I have 110N/mm on the front and 40N/mm on the rear. That's soft! Changing up to 120N/mm front and 80N/mm rears for next year. I've I my for a little 4 pot though.

[DanThe]

Ive changed my rears from 550lb down to 320lb and its made the car a hell of a lot better

That's a true coilover rear, right?

Yep gaz goldzzzzzzz
Making the car softer sprung on the back has made a big difference, much more grip and less tail happy. The one thing I'm struggling with at the moment is getting enough neg camber on the rear, I've lowered it as much as I can without 'too much' inner arch surgery, the plan is to cut more inner arch out and lower a bit more as and when

[initial_g]

Ive took the rear arb off dan ive noticed a huge improvement inn rear grip. Still got a 24mm up front

[DanThe]

Will you be doing any track days over winter mate?

[Bristol_Jer]

I've got 600 or 650 on the front of mine (can't remember which), but it's running a m30 so weightier than the standard lump. I need to get the coilovers back to Gaz to get them revalved to suit the extra weight so I could probably get away with a softer spring then. Does work well at the moment though but there is always room for improvement!

Not fitted my rear coilovers yet as I want to tie the shock top mounts and diff mount into the rollcage first. Have the rear suspension pretty soft as it is now (b4 shock and KW -40mm spring) and really impressed with the grip and is so easy to catch and control when the rear steps out

[initial_g]

Will you be doing any track days over winter mate?

No matey im doing the engine swap atm its stalled for the minute untill i get a getrag 265 sorted. Although the cars still mobile and running ect, im back working in derby after xmas so will have more time on my hands, i may get a track day in if one pops up at the right price