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coilovers, camber, allignment

 
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Old 10-03-2008, 05:18 PM
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coilovers, camber, allignment

so i bought some tein coilovers. i think im only gonna lower it like 1.5 in the front and 2 in the back, is a camber kit a necessity? also will i need to get a new allignment every time i change the ride height?
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Old 10-03-2008, 06:33 PM
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Re: coilovers, camber, allignment

With a mild drop like that depending what type of setup youre running, (5th type SH has a double wish bone suspension) you may have enough slop to work with and prevent the need for a camber kit.

A double wishbone suspension is essentially an SLA type of suspension because it has both upper and lower control arms. SLA and Double Wishbones generally have more adjustability than a MacPherson type suspension....ESPECIALLY at the upper pivot points (strut mount on a Macpherson, upper ball joint on a double wishbone/SLA)

Any time you adjust your ride height you are going to throw your angles out of whack. Not only do you have caster, camber and toe to worry about, there is also the Steering Axis Inclination (SAI) and Included Angles (IA) that will be affected.

A lot of repair facilities and schools don't go too in depth on these angles because they dont completely understand them, but with a general understanding of SAI and IA along with camber, caster, and toe, one can determine any bent parts in the suspension.

SAI is the angle measured between true vertical and the imaginary line passing through the vehicle's pivot points (upper/lower ball joints, strut mounts,etc) when viewed from the front.

IA is the combination of SAI and Camber (SAI + Camber) and is also viewed from the front. Camber can be measured as the angle between true vertical and the centerline of the tire.

Some schools/mechanics will try to tell you that SAI cant be adjusted. They are WRONG. Most SLA type suspensions have an eccentric (oval shaped) bolt in the upper control arm at the pivot point SPECIFICALLY for adjustment. Go look at an S-10 suspension and tell me that you can't adjust the upper control arm. Steph can vouge on this one!

What it comes down to is this, if SAI is correct that your vehicle is structurally sound. If SAI is correct and IA is off, something is shifted or bent between the pivot points.

For example:If my 97 Type SH (Double wishbone) has the correct SAI but the IA is off, it can only be one thing. The steering knuckle. In a DWB or SLA the ONLY thing between the pivot points(upper and lower ball joints in this case) would be the steering knuckle...indicating that is where you're failure is.

Shops that only measure toe, camber, and caster can easily overlook a bent or damaged part because they neglect to consider SAI and IA because they don't fully grasp it. You would be surprised at the vehicles driving around with bent steering/suspension components because most places DON'T take all these measuremeants. If and when you do lower it (especially drastic amounts) it will be more difficult to pull all of these angles back into spec, especially without camber/caster kits.

Next time you or anyone goes in for an alignment, ask them if they measure SAI and IA. See what they say.
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Old 10-04-2008, 01:49 PM
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Re: coilovers, camber, allignment

That's some ranken material there Ha!

nice summary josh
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Old 10-04-2008, 01:58 PM
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Re: coilovers, camber, allignment

well that was a bit more in depth than i had in mind but much appreciated. im runnin a 2001 base. but i am still unclear as to if i will need a camber kit. when i do things i like to do them right the first time and i would like to put these teins on asap. so if i need a camber kit i wanna go ahead and get it.
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Old 10-04-2008, 11:51 PM
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Re: coilovers, camber, allignment

you honestly won't be able to tell until you get an alignment. Unless someone on here has done the drop your going to do and can tell you from experience that you'll need it.
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