I think you'll also find that the effective spring rate (at the wheel) of the front will also be progressive because of the geometry of the Falcon SLALS™ front suspension. Even with linear rate springs.
So either way my suspension specialist will know what he is doing so I don't have to worry, I just didn't realise that a pair of the springs are progressive. Thought they were all linear on sparts setups.
Originally posted by 94ED_Fairmont So either way my suspension specialist will know what he is doing .....
Yeah right! You can believe that if you want too.
Sorry, a bit of a generalisation.
Maybe you have one that does know their stuff.
All the ones I come across just seem interested in selling whatever brand they happen to represent or have in stock and know much less about suspension (car dynamics) than I do. But hey, they only work there - it's not like I'm overly devoted to my job either - that's just where I go to read FF.com.
I've been down the King Progressive rate springs road very recently. I've found that if you are using variable valving type shockies (like Bilstein or Gabriel VST or Pedders VRD) then you need to stay away from progressive rate springs - but if you're going to run normal shockies - ie. like Monro GT's or such then progressives should be fine - in fact will be a good thing. I don't know how progressives would fare with Koni shockies but I suspect they'd be a good combo.
The King springs listing shows std rate front springs (KFFL-26) and progressive rate rear springs (KFRL-27C) as straight replacement parts for XR6. They suggest that for cars with large wheels (like 18" or more) then progressive rate springs be used all round - particularly in the case of superlow spec ones.
If you go for progressive rate "Low" (same spec as std XR6) rear springs then you should seriously consider also fitting Superpro 10mm spring spacers else the rear will look lower than the front with even a fairly small load.
are you getting shocks to go with them? if you are after cheap good shocks there is a company that rebuilds standard shocks to whatever specs you want, for sweet bugger all $$$.
they can shorten them, make them stiffer or softer, and even lower the font of the car by changing the position of the spring seat. they have a 2 year 40,000k warranty
i have a set in my car, cost less than $200 for all four (not including fitting, did it myself and will help you if you want) and they are great. only problems are the rear is not q-u-i-t-e stiff enough, i like a stiffish ride and have a big stereo in the boot, so sometimes i have that feeling that says " a little stiffer shocks in the back would be good" and also the fronts lack a little travel on bumps.
i have superlow king springs and the front shocks bottom out on big bumps, they didnt when i had standard shocks and lowered springs in...i did ask him to reset the ride height a few mm lower at the front to make the car sit level cause of the stereo, it would prolly be better if i had only 1" lower springs instead of 2...
are you going on the cruise on sunday? i could take you for a drive and you could see if you like them, i would sell the set of shocks for say $170 (i could fit them for a little extra if you want as well, im a mechanic) and i would get a new stiffer set.
mine have only been in use for probably 2 months at the most, so they are still good, and in warranty.
the name of the place if you are interested is caled TSR (The Shock Absorber Reconditioners) and they rebuild all the shocks for the EAs and VNs in that raceing category i forget what its called.
ph no and address is: (07) 3808 2455, UNIT 1, 18 ARANDA ST, Slacks Creek 4127
Slick, Quick and Fulliii SIK!!!
Proud TQE Operator
197.4hp at the wheels, email@example.com/h Tuning in progress... *CLICK TO SEE MY XR6*
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Hey rollin, Im going down to TSR this week to have a set of lowered king springs and rebuilt shocks fitted (front only at this point). How did you find them, are the shocks nice and stiff? Service ok? Will they do a wheel balance there or do I have to get it done somewhere else? They are charging me 180 bucks to fit new springs, rebuilt shocks, because I am too lazy to do it myself......i just wanna know if the shocks are any good, i dont wanna pay that much for crap when I could save more for konis or something.......
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