randy Posted September 7, 2002 Share Posted September 7, 2002 Which one is better the HKS super form or the Eibach pro kit? I hear the HKS lowers the car by 35mm in the front and 5mm at the rear the Eibach lowers the front/rear by about 1.3 inches. Would the HKS be better? It seems to have better road clearance! Quote Link to comment Share on other sites More sharing options...
Induction Posted September 9, 2002 Share Posted September 9, 2002 Randy I've got Eibachs fitted and they have lowered the car by about 25mm all round. Sometimes during spirited driving the tops of the fronts will touch the underside of the arches (not the bodywork but the black plastic inserts up inside the arches) and make a nasty sound. I've been told this is because the standard shocks can't handle the sudden increase in load. I've ordered some AGX shocks from the USA (should be with me anytime now). I'd read that the AGX's, which are 4 way adjustable, are a perfect partner for the Eibachs and should create a good setup. I'll get them fitted and post the results. Jules Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted September 9, 2002 Share Posted September 9, 2002 I truly believe the Eibachs are better springs. Quote Link to comment Share on other sites More sharing options...
randy Posted September 9, 2002 Author Share Posted September 9, 2002 Thanks guys!! Everyone seems to recomend the Eibach. I have a 4" exhaust {HKS Priest} I am just concerned about the clearance after installation due to the big diameter exhaust which may scrape on speed humps. Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted September 9, 2002 Share Posted September 9, 2002 There's a lot of posts about springs on this site but I can't remember seeing any mention of spring rates. What sort of rates are we talking about here. I've got Bilsteins etc and progressive springs but I haven't checked what brand (or rate). The car is almost stiff enough to be track set-up. Also does anybody know what ARBs are standard for J & UK spec. From my racing experience I know Eibachs are v good. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 9, 2002 Share Posted September 9, 2002 Originally posted by Induction Randy I've got Eibachs fitted and they have lowered the car by about 25mm all round. Sometimes during spirited driving the tops of the fronts will touch the underside of the arches (not the bodywork but the black plastic inserts up inside the arches) and make a nasty sound. I've been told this is because the standard shocks can't handle the sudden increase in load. I've ordered some AGX shocks from the USA (should be with me anytime now). I'd read that the AGX's, which are 4 way adjustable, are a perfect partner for the Eibachs and should create a good setup. I'll get them fitted and post the results. Jules Dampers are not for handling roll or or ride height, although they can and do alter the speed at which ride and roll change. Lowering any car is an EXTREMELY complex business. From the info you give it sounds as if your spring rates are too low for the ride height they run the car at, and with the wheel and tyre combination. My own in depth review of the MKIV suspension suggests a max ride height reduction of 10 or 15 mm retains a good suspension geometry. Dampers (shocks) should be matched to the spring rates, and NOT used solely as a means of roll control, a task they only perform in corner entry anyway. I f you only want to change roll stiffness an anti roll bar stiffness increase might help, at the expnse of ride quality in single wheel bump and rebound. Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted September 9, 2002 Share Posted September 9, 2002 Chris Exactly my words - except when I tried to post a lengthy reply on this subject my connection crashed! You've saved me re-typing it all. Do you have an answer to my question on ARBs though? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 9, 2002 Share Posted September 9, 2002 Originally posted by John Packham Chris Exactly my words - except when I tried to post a lengthy reply on this subject my connection crashed! You've saved me re-typing it all. Do you have an answer to my question on ARBs though? AFAIK the UK and J-Spec cars share the same ARB diameters. Mounting them in much stiffer, but still flexible mounts will effectively raise their rates substantially. There is far too much chassis flex to make solid mounts a practical option. Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted September 9, 2002 Share Posted September 9, 2002 What's ARB's ? Quote Link to comment Share on other sites More sharing options...
Doug Posted September 9, 2002 Share Posted September 9, 2002 Anti Roll Bars or I could be just as stupid as you Matt Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted September 9, 2002 Share Posted September 9, 2002 DOH! - Obvious now it's in front of me... Quote Link to comment Share on other sites More sharing options...
randy Posted September 10, 2002 Author Share Posted September 10, 2002 Originally posted by Chris Wilson Dampers are not for handling roll or or ride height, although they can and do alter the speed at which ride and roll change. Lowering any car is an EXTREMELY complex business. From the info you give it sounds as if your spring rates are too low for the ride height they run the car at, and with the wheel and tyre combination. My own in depth review of the MKIV suspension suggests a max ride height reduction of 10 or 15 mm retains a good suspension geometry. Dampers (shocks) should be matched to the spring rates, and NOT used solely as a means of roll control, a task they only perform in corner entry anyway. I f you only want to change roll stiffness an anti roll bar stiffness increase might help, at the expnse of ride quality in single wheel bump and rebound. Chris, What springs would you suggest I use? Cause most springs lower the car by min of 25mm in front? I would like to lower my car not only for the handling but also to reduce the fender gap. It would great to reduce the ride hight by 15mm as I would have better road clearance. Any options? Secondly I plan on buying the TRD anti sway bars. Will this be enough to prevent body roll? Quote Link to comment Share on other sites More sharing options...
Rich J Posted September 10, 2002 Share Posted September 10, 2002 Originally posted by Chris Wilson My own in depth review of the MKIV suspension suggests a max ride height reduction of 10 or 15 mm retains a good suspension geometry. [/b] Is that both J-spec and UK models, I've always thought that the J-spec looks a lot higher at the front than the UK model on standard springs (could be just my imagination though) Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted September 10, 2002 Share Posted September 10, 2002 Just a footnote to the HKS Or Eibach debate: Does anybody know who makes the springs for HKS? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 10, 2002 Share Posted September 10, 2002 Originally posted by randy Chris, What springs would you suggest I use? Cause most springs lower the car by min of 25mm in front? I would like to lower my car not only for the handling but also to reduce the fender gap. It would great to reduce the ride hight by 15mm as I would have better road clearance. Any options? Secondly I plan on buying the TRD anti sway bars. Will this be enough to prevent body roll? I have designed a suspension package for the MKIV with progressively wound springs and revalved Koni shocks. My springs, although working best with "my" shocks will work fairly well with stock ones, but as I have them made in low volume they are a bit more expensive than the HKS ones. I can get you a price for springs alone, they drop the car about 12 mm at the front, only about 5 mm at the rear, but their compression characteristics and rates are VERY different from stock. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.