R34Gtt Nismo Bilstein Shocks - What Springs Do I Have?

[rondofj]

I just bought some used R34GTT Nismo Bilsteins (fitted to factory R34GTT Nismo editions I think) over the weekend for cheap and am getting Sydneykid to machine groves in them and possibly re-valve them if they are rooted.

I had the wrecker compress the springs a good bit and I then tested the dampers by pushing down on them and seeing if they slowly come up, which they did. And zero oil leaks too, so hoping they all good.

Now I think these are fitted with the stock Eibach springs? and would like to identify them. Does anyone know what they are from pics and how low will they go?

My goal is to achieve front 350mm and rear 340mm height from wheel centreline to guard- this is the height recommended by him. Not any higher. The Nismo R34 GTTs I heard were 15mm lower than standard ones so they should be 365mm/355mm F / R. This is a 100% STREET CAR - 'some' comfort first and then handling/traction.

The common thing is to get Kings 'Lows' and be done with it I know, but I already have springs which might be pretty similar.

Should I get new springs or use these and slide down the groves which I will have machined? These current springs are

F: 12mm wire dia, 6 active coils, 124mm outer dia

R: 12mm wire dia, 4 active coils, 127mm outer dia

Edited July 31, 2013 by rondofj

[djr81]

Eibachs usually have writing on them. Can you read anything on the springs?

[rondofj]

couldn't find any engraving mate

[discopotato03]

I reckon he would get the dampers checked on a shock dyno and go from there , he knows what readouts he gets with his valving and will probably advise what to do .

I believe springs are a bit more difficult and the delux option is a coilover conversion with Eibach springs . I'm not sure that Whiteline make the SK "Works" kit springs anymore so anyone that has them , like me , is at a dead end if you have problems with them . The conversion is a little exy but not difficult and you get access to a huge range of springs and easy height adjustment .

Actually he told me the other day that my rear springs are not the exact rate he wanted but it was what was doable with a std configuration (not rate) spring .

Bottom line Billies are great because they are serviceable and if you can get into easily available springs there is no dead end . Others would disagree but I don't like the bling brightly coloured aftermarket coilovers with spherical joints when the above mentioned system can go in and work really well with the std rubber in the strut tops and bottom eye mounts . You don't want spherical joint rattles and a hard as nails ride in a road car - or the NVH roar that drives you crazy .

SK stuff is great when you want it to work well and be liveable . I really like mine cheers A .

[rondofj]

These Bilsteins are with SK at the moment to cut the grooves in, add bumpstops and test in a shock dyno to make sure all's ok (he said its ok to run without boots as the seals are good on Bilsteins and many aftermarket coilovers dont have boots too).

Can't wait to put them on, he's busy with racecar stuff at the moment. Disco, what spring rates and shocks are you running?