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Thread: Track Mk2 spring rates

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    So had a thread on Mk2 racer spring rates, how about Mk2 track car rates.

    Currently got Eibachs linked to Eibach pro dampers, great on road, but really is a bit too soft on track- esp on slicks.

    Got Eibach ARBs & all round poly bushes (think Eibachs are 22F 25R)

    I had wondered if just a set of koni adjustables would siffen it up nicely but when running slicks, really it feels like I need quite a bit harder spring rates as well as firmer dampers.

    I know this will pretty much destroy its fun on roads tho if i got very hard. Tho perhaps if i could get harder springs but also progressively wound that would perhaps be better.

    So suggetions on rates greatfully accepted & also if anyone knows the rates of the Eibachs (or H&Rs which Ive got a spare unused set of) as a comparison would be dead handy.

    Also at what sort of poundage will I then have to go for solid top mounts?

    Cheers

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    Quote Originally Posted by iguana

    I had wondered if just a set of koni adjustables would siffen it up nicely but when running slicks, really it feels like I need quite a bit harder spring rates as well as firmer dampers.
    Stiffer springs do help the slicks to work better, although depending on who's advise you seek opinions are often different.

    Quote Originally Posted by iguana
    I know this will pretty much destroy its fun on roads tho if i got very hard. Tho perhaps if i could get harder springs but also progressively wound that would perhaps be better.
    Progresive springs didnt work for me, if you want a fast track car build a track car, a fast road car is too much of a compromise for track use imho.

    Quote Originally Posted by iguana
    So suggetions on rates greatfully accepted & also if anyone knows the rates of the Eibachs (or H&Rs which Ive got a spare unused set of) as a comparison would be dead handy.
    its fairly common knowledge what i run - 500frt and 600rr

    Cheers[/QUOTE]

    If you read keiths dads threads on the mk1 there are different theores (sp?) on what rate to runs, if softer springs with harder dampning is poss a better route etc. Depends on many things as ever ! Changing my rates made a much beter car for me, although now the avos cant cope with the springs anymore so its worth thinking long term as to what route you go. I hate to think how much i've blown on suspension over the years, there been at least three diff makes on it and numerous 2.25" springs in the shed, if i had thought about it a bit more i'd of just bought leda's from the off.

    i like my suspension "guru" so i'll keep him in my pocket !


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    Quote Originally Posted by barny
    its fairly common knowledge what i run - 500frt and 6000rr
    WOW... some rear springs
    I knew you ran some siff rear springs but I didn’t realise they were that stiff

    crazy people never doubt their own sanity

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    Quote Originally Posted by barny
    i like my suspension "guru" so i'll keep him in my pocket !
    Who'd that be?

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    Hmm, must have a 6ft odd deep pocket


    Quote Originally Posted by EZ_Pete View Post
    HiFi forums are surely going to be even more full of nutters than this place.

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    Quote Originally Posted by GVK
    Hmm, must have a 6ft odd deep pocket
    i have a range rover remember


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    Quote Originally Posted by barny
    Progresive springs didnt work for me, if you want a fast track car build a track car, a fast road car is too much of a compromise for track use imho.
    I know what you mean B but several cars like RS porkers or Nobles etc do manage a reasonable compramise.

    Im not sure just yet that im ready for a real hard road ride, but a brief drive in IanVs Mk1 made me realise just how soft mine is on track & got the old grey cells wondering....

    Anyway hurry up get lumpy sorted coz I wanna take her for a run on the roads to see if its really totally undrivable on road or not.


    Anyway come on fellas- thought id geta bit more feedback on this one...

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    Well, if it's any help, standard Mk2 spring rates are:

    8v - Front 117Lb, Rear 82Lb
    16v - Front 128Lb, Rear 98Lb

    Eibach quote the Pro-Kit springs to be about 25% stiffer than stock so I imagine they'll be up around 150-160Lb fronts.

    Standard coilovers tend to go for about 180-200Lb on the front springs.

    The sports cars you've mentioned can do good handling on road and track by having better suspension design which keeps the tyre contact patch high over a wide range of leaning amounts so they can get away with softer springs.

    When a golf starts to roll, the geometries go to pot fairly quickly I imagine so you have to keep it stiff.

    That's how I see it anyway.

    We'll see when I get my R1 engined kit car on track .....

    EDIT: I know the Eibachs are progressive rate so figures are only rough.

    Joe
    Edited by: Joe_G

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    Not seen you around here for a while Joe.

    R1 engined kit-car.. tell me more!!


    Quote Originally Posted by EZ_Pete View Post
    HiFi forums are surely going to be even more full of nutters than this place.

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    Hehe, it'll be good ..... when it gets built

    Probably going to go for a Fisher Fury with an R1 engine. They're starting a similar build in PPC's latest issue. 1300cc Hayabusa would be ideal but the engines are 3k for a second hand one. You can buy a brand new R1 engine for under 2k or a used one for 1k.

    That's if I make it a road car ....

    Otherwise I really like the look of this R1OT

    Had enough of this front wheel drive malarkey

    Joe

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    Quote Originally Posted by iguana
    Quote Originally Posted by barny
    Progresive springs didnt work for me, if you want a fast track car build a track car, a fast road car is too much of a compromise for track use imho.
    Anyway hurry up get lumpy sorted coz I wanna take her for a run on the roads to see if its really totally undrivable on road or not.
    i doubt lumpy nor the mk1 racer will get done this year , infact wouldn't surprise me if one or even both got sold/stripped , you really dont wanna know whats in the pipe line


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    i currently have 300lb fronts and 200lb rear springs on my track car on avo coilovers, avo recommended these rates as a good starting point and they adjusted the internal bump to suit track use.

    speaking to the bloke on the KW stand at inters about the variant 3 coilovers, if he did his sums right they come with springs in the region of 800-900lbs fitted which seemed a bit high to me.

    i've been for a ride in barnys car, whiles its obviously a firm ride it's certainly not unbearable/undrivable on the road.

    hope theres nothing too serious happening that will make you sell the cars barny

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    Quote Originally Posted by barny
    i doubt lumpy nor the mk1 racer will get done this year , infact wouldn't surprise me if one or even both got sold/stripped , you really dont wanna know whats in the pipe line

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    Well hello all!!!!
    Been a while but busy little lady atm!! i have just swapped from a fixed spring and helper spring to a prgressive rate spring setup - and would definitely NOT recommend progressive for track use hun, i can't feel what the cars is doing half the time - it certainly doesn't seem to drive into corners or round them particularly well and it certainly wallows and 'boings' out the otherside a little disconcertingly too - i can barely put up with it on road, and i know i drive hard but not like you nutters!!!!!!



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    is that with or with out his wasp killng shoe?

    Quote Originally Posted by barny

    i like my suspension "guru" so i'll keep him in my pocket !



    MKII Oak Green 16v - trackday pensioner


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    Joe- cheers for those spring rates. yes R1 kit car is a great choice, a buddy is building one at the mo, defo given me the bug too, I love Caterhams & have driven many, but simply can't afford the performance im after in a Caterham, so BEKC perhaps is the way forward.

    Barny- thats sad news old bean, surely you would regret it in a big way tho?

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    Quote Originally Posted by iguana
    Barny- thats sad news old bean, surely you would regret it in a big way tho?
    ....not much choice mr


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    Quote Originally Posted by steve r
    i currently have 300lb fronts and 200lb rear springs on my track car on avo coilovers, avo recommended these rates as a good starting point and they adjusted the internal bump to suit track use.
    Steve, I know you now run 350/250, so was this a typo when you put 300/200 in this (old) thread or did you actually run 300/200 & then later uprate to 350/250.

    cheers




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    I think that is a typo as i'm sure they are 350/250, i'll try to find the receipt from avo to confirm as i'm now starting to doubt myself

    Edit: Found the receipt, I'm not loosing my mind just yet:

    350fr (9" long) and 250r (10").

    Part numbers are E9350 and E10250 £22 each in march 2004.

    both 2.25" and i fitted 4" helper springs to the rear as when the car was jacked up the rear springs were loose.


    Edited by: steve r

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    Steve, were you not fitting passat spring or was that a mistake ?
    Mk2 Jetta 16v
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    passat wishbones,driveshafts and track rods for the widetrack conversion, but not the springs
    Edited by: steve r

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    Cheers for that steve you are a star



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