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10-02-2005, 10:27 PM | #1 |
Scooby Specialist
Member#: 42979
Join Date: Sep 2003
Location: houston tx
Vehicle:03 wrx blizzzack stage IV |
Installed coilover suspension, how high should i set my car before i get it aligned?
Whats the best performing height to set my 03 wrx to? my suspension mods are NEX coilovers and solid endlinks, and my tires are 235/45/17's. thanks
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10-03-2005, 12:14 AM | #2 |
Scooby Guru
Member#: 1725
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Chapter/Region:
International
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Vehicle:2002 Subaru Forester SG silver |
I'd even venture to go higher, 14.5F/14R. It really does depend on the spring rate and available bump travel. Most coilovers have very little bump travel and even guys with very stiff rates like the Flex's have gone up from previous heights such as 13.5F/13.5F up to Myle's recommendation. The Flex's have very little bump travel and at that height, most had found they were hitting the bumpstops more often than not, leading to mid turn bump understeer. So go perhaps a bit higher to allow some settling to around Myle's initial recommendation. BTW, these heights are wheel hub center to bottom of fender. These are the best way to measure ride height as they are absolutely independent of any wheel/tire combo.
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10-03-2005, 12:58 PM | #3 |
Scooby Specialist
Member#: 42979
Join Date: Sep 2003
Location: houston tx
Vehicle:03 wrx blizzzack stage IV |
Ok great! thanks for the info, also is their any recomendations on the kind of camber i should run in the front and in the back before i pay to have the allignment done?
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10-03-2005, 01:15 PM | #4 |
Scooby Guru
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Join Date: Jun 2000
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International
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Vehicle:2002 Subaru Forester SG silver |
do you have camber plates? alignments are a pretty personal thing and are dependent on your driving needs and the tires you are using. the autoxers usually max the camber bolt and the camber plate out, set the front toe to a couple of mm's out then back the camber plate off till you get to zero toe, that will then be the street setting. ideally its good to have rear camber bolts or plates in the rear to fine tune rear camber as well. Rear camber, once again, dependent on how you drive. autoxers usually like less negative camber in the rear than in the front so they have a very loose rear end. for street and road course, usually a bit more neg camber in the rear than in the front for more stability.
so for example for a safe street setting: F -1.5 camber, zero toe R -1.7 camber, zero toe |
10-03-2005, 01:39 PM | #5 |
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Vehicle:2013 Jacked Up T4R |
I would second everything Arnie has said with a "if you auto-x" caveat:
Try and get your street settings for toe to around 1/16" toe in per side up front. That way when you move the plates to full or near full negative camber at race venue you will effectively be seeing appropriate levels of toe out in front WITHOUT being extreme. I had a setup thread somewhere that showed how we did it...too lazy to find it however...sorry. found it: http://forums.nasioc.com/forums/show...ight=alignment BriDrive Last edited by BriDrive; 10-03-2005 at 01:44 PM. |
10-04-2005, 02:24 AM | #6 |
Former Vendor
Member#: 97303
Join Date: Sep 2005
Chapter/Region:
MAIC
Location: inside a non preloaded shim !
Vehicle:2015 WRX |
If you do nothing else.........at least listen to these guys THEY actually know what they are talking about.
Me, well I am just some old fatt dude..with PS2 specs in a PDA..... NAh, these are the Guru's of NASIOC. ( really) . THey offer alot of info for people who need non-baised direction. Myles 944 turbo guy LOL |
10-04-2005, 03:18 AM | #7 |
Scooby Guru
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Ah myles, you should have just stayed 944 Turbo Guy, at least then, we'd still have respected your opinion!
And heck, what do I know, I drive a Festiva! |
10-04-2005, 11:41 AM | #8 |
Scooby Specialist
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Join Date: Sep 2003
Location: houston tx
Vehicle:03 wrx blizzzack stage IV |
One more question, whats the best way to raise the car with these coilovers? meaning should i raise the car with the ajustable lower base of the coilover or by the lower spring perch adjustemnt part??? on mine i can raise it either way it looks like, does it matter?
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10-04-2005, 11:56 AM | #9 |
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if you raise it on just the perch you will also adjust preload- might be better to leave that part alone if you're not adjusting strut rebound/damping. i mainly wanted to say 'nice festiva' |
10-04-2005, 12:03 PM | #10 |
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Join Date: Jul 2002
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Use the lower threaded portion of the shock body. Don't use the lower spring perch.
Most coilovers I have seen will yield approximately 2 mm of rideheight per each full turn on the lower body. Follow the threads of course; screw out to raise, screw in to lower. When installed on the car, this is generally done with manufacturer's included "spanner wrenches" which allow you to effectively rotate the entire upper threaded shock body in or out by latching on to the collar below the lower spring perch collar. I am however, admittedly not familiar with NEX rigs. Consult the manual or get an experienced hand to help you out. |
10-04-2005, 12:28 PM | #11 |
Scooby Specialist
Member#: 42979
Join Date: Sep 2003
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Vehicle:03 wrx blizzzack stage IV |
hmmm.... ok im learning more and more, thanks. if the car seems bouncy or overly damped, how should i adjust the the spring part or the preload to help correct the problem? Im aware that these NEX coilovers are low budget and some of the roughest feeling available so i know i cant completely get rid of all the bouncy feeling, but what eles could i do to help eleiminate some of the the bouncyness or overdamped feeling???
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10-04-2005, 01:02 PM | #12 |
Scooby Specialist
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Do they have dampening adjusters?
As far as pre-load goes; it can vary by manufacturer and particular spring...A good rule of thumb is: loosen lower collar and then retighten lower collar about a half turn after the collar becomes snug to the spring. To tight with the pre-load and you are effectively increasing spring rate. Also, experiment with tire pressures. |
10-04-2005, 01:30 PM | #13 | |
Street's closed, pizza boy
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Quote:
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10-04-2005, 10:36 PM | #14 | |
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Quote:
mw |
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10-04-2005, 10:52 PM | #15 | |
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Quote:
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10-04-2005, 11:39 PM | #16 |
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B'AH!!!! Why'd you have to tell 'em that?!?!?! That's not supposed to be public knowledge.
PS - I'm much better now. |
10-04-2005, 11:46 PM | #17 |
Scooby Guru
Member#: 1725
Join Date: Jun 2000
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Vehicle:2002 Subaru Forester SG silver |
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10-04-2005, 11:52 PM | #18 |
Scooby Specialist
Member#: 50319
Join Date: Dec 2003
Chapter/Region:
NESIC
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I know, it is pretty funny. I've accepted the fact that I'm just slow.
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10-05-2005, 02:57 AM | #19 |
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Vehicle:1968 Saab Sonett II V4 |
Adjust the lower spring perch so there is just a touch of tension on the spring with the suspension at full droop. Then adjust ride height by adjusting the strut body in the lower knuckle. Also, the 13.5-14" from axle center to fender lip is good.
But what do I know, I use to race this (before the STi): Chris H. |
10-05-2005, 04:03 AM | #20 |
Scooby Guru
Member#: 1725
Join Date: Jun 2000
Chapter/Region:
International
Location: Germany
Vehicle:2002 Subaru Forester SG silver |
And I had a similar Yokohama sticker across my windshield as well. Loved the A008's!
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