Spring Rate Chart for Evo X
#61
I am on the hunt for the best track worthy springs. I drive a GSR with stock suspension. A friend of mine that drives a 9 has the swift springs. I am wondering for the track if I should consider front/rear sway bar AND springs? I have heard that the X should be fine with just a rear sway bar upgrade. Input?
As far as track worthy springs you want a moderate drop and spring rate change that won't overwhelm the stock shocks. The real answer is a good set of coilovers in the $2000 range if you are serious. If you can only go with springs right now finding some Bilstein shocks from an MR owner coupled with the Swift springs seems like a well liked combo, plus you can get the shocks re-valved if you want to choose the more aggressive spring rates and drops to really dial it in.
#62
MR Bilsteins with GTWorx springs
I put on the GT Worx springs on my 2011 MR. The stocks shocks are seriously under damped with these springs and my car lurched and bounced around badly. The car is horrible at speed on a bumpy country road. The stock springs are better for the street IMHO.
At a smooth track where damping isn't critical I gained 4-5 seconds a lap (Watkins Glen).
IMHO Don't put these springs on unless you revalve the shocks - I think you'll be disappointed otherwise because the back road agility and speed, the things that make the Evo great, is compromised.
Revalve $120 ea = $480
Used bilsteins = $400 set
springs = $350
Total $1230
A good 2 way adjustable Ohlins is $2300. Unless you have the bilsteins already it's not a good way to go. The revalved bilsteins will be a compromise, either too stiff for the street or to soft for the track.
At a smooth track where damping isn't critical I gained 4-5 seconds a lap (Watkins Glen).
IMHO Don't put these springs on unless you revalve the shocks - I think you'll be disappointed otherwise because the back road agility and speed, the things that make the Evo great, is compromised.
Revalve $120 ea = $480
Used bilsteins = $400 set
springs = $350
Total $1230
A good 2 way adjustable Ohlins is $2300. Unless you have the bilsteins already it's not a good way to go. The revalved bilsteins will be a compromise, either too stiff for the street or to soft for the track.
#66
DeltaVee for Bilstein revalve
1) I had the rear Bilsteins revalved by Rob at DeltaVee Motorsports in Kalamazoo, MI. Great service, 2 week turn around, about $110 each including guides?, seals and a dyno chart. Very pleased. The compression damping was doubled and the rebound damping quadrupled. The rear bounciness and floating was gone and the ride actually improved in the drivers seat. With the rear better controlled the front damping seemed weak
2) I rebuilt and revalved the fronts. Again, Rob at DeltaVee did a fantastic job. The front struts had much more damping from the factory, so based on spring rates and corner weights Rob only doubled the compression and rebound damping.
2) I rebuilt and revalved the fronts. Again, Rob at DeltaVee did a fantastic job. The front struts had much more damping from the factory, so based on spring rates and corner weights Rob only doubled the compression and rebound damping.
#67
Evolved Member
For some reasons, the sort-of-new JRZ RS1 coilovers (single compression and rebound adjustability, 8 kg/mm(?) front & 9 kg/mm(?) rear for the Evo) are not listed in the chart. This is potentially a great street and entry-level track setup for those want to splurge. There is also a review (https://www.evolutionm.net/forums/ev...it-review.html) on this forum from 2012.
#68
Evolved Member
iTrader: (1)
For some reasons, the sort-of-new JRZ RS1 coilovers (single compression and rebound adjustability, 8 kg/mm(?) front & 9 kg/mm(?) rear for the Evo) are not listed in the chart. This is potentially a great street and entry-level track setup for those want to splurge. There is also a review (https://www.evolutionm.net/forums/ev...it-review.html) on this forum from 2012.
#69
Evolved Member
#70
Evolved Member
iTrader: (1)
Pretty much. I mean you can street the JRZ, but you'll deal with decreased performance after awhile until you decide to rebuild them.
Other people have added dust boots and bump stops to the JRZs as well.
I have a coilover setup that uses 3 party duty boots, luckily mine came with bump stops.
Other people have added dust boots and bump stops to the JRZs as well.
I have a coilover setup that uses 3 party duty boots, luckily mine came with bump stops.
#74
Hi guys,
I don't understand why we have gsr OEM SPRING rate, but we don't have the OEM COILOVER rate ?
I thought it was 8 kg front/rear but I'm not able to confirm.
Help please
I don't understand why we have gsr OEM SPRING rate, but we don't have the OEM COILOVER rate ?
I thought it was 8 kg front/rear but I'm not able to confirm.
Help please
#75
Bad vibration after 35 mph
Bought Megan Coilovers and had them installed on my 10 ralliart...We installed spacers too and this is happening around 35MPH and it gets worse the faster you go.
Any advice?
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Any advice?