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Ultimate Street suspension guide

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  • Advancedynamix
    replied
    That sounds odd William. The stock festiva settings are actually positive camber iirc. They sit at about 0 to .6 degrees I think. I have never checked an aspire though, maybe the Aspire beam has negative camber. Yes, as you lower the car your toe out will become negative camber. If your sitting close to -2 degrees then the shims should get you close to -3. I think moog offers different angle choices in those shims.
    Last edited by Advancedynamix; 04-16-2016, 04:43 PM.

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  • william
    replied
    What is the factory rear camber for the festiva beam?
    I just put a camber gauge on my aspire beam swapped festiva and have about 1.75 negative camber .
    My rear has the vw rears with 120 springs all the way up .
    I have about 16th toe out in the rear .
    I guess my question is Will I be able to achieve the 3 degrees with the moog shims and when I lower the car will I gain + camber and toe?
    Last edited by william; 04-16-2016, 02:56 PM.

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  • nitrofarm
    replied
    It almost makes sense to try lighter springs in front with stock shocks. I've tried the heavier & it does Pogo and is crap. We always think heavier is better with springs,but Charlie is right. The wimpy almost non-existent dampen off the oem Rio,Festy & Aspire struts. Are not suited to stiff springs.

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  • Advancedynamix
    replied
    Originally posted by bhearts View Post
    175 in the front, 120s in the rear

    Sent from my SM-G900V using Tapatalk
    175 fronts won't sag much, if any so you aren't going to have much adjustment. It's going to ride higher than stock. Also, I'm afraid that 175lb springs with stock shock valving are going to handle really badly. The stock shocks are valved too loosely for the stock spring rate (that's why these cars feel so cheap and loose with stock suspension). You've now drastically raised the rate rise of the springs and your relying on stock valving to control it. It's going to pogo badly. This causes the wheel hop that blows up differential assembles in FWD cars.

    Originally posted by bhearts View Post
    So I want it level with me in the car, up to the body seam, which I'm assuming could mean the bottom of the door, what height is your car set at to the bottom of the door.

    Sent from my SM-G900V using Tapatalk
    I personally measure to the lowest pinch weld seam on the body. The rear should sit a bit higher. You can use the fender well too, but it's hard to get an accurate measure there. I can't remember where mine sits, but I'll check today.
    Last edited by Advancedynamix; 04-16-2016, 09:58 AM.

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  • bhearts
    replied
    So I want it level with me in the car, up to the body seam, which I'm assuming could mean the bottom of the door, what height is your car set at to the bottom of the door.

    Sent from my SM-G900V using Tapatalk

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  • bhearts
    replied
    Originally posted by Advancedynamix View Post
    Brian, what rate are those?
    175 in the front, 120s in the rear

    Sent from my SM-G900V using Tapatalk

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  • Advancedynamix
    replied
    Brian, what rate are those?

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  • Advancedynamix
    replied
    Like Mike said. Brian, you'll want to have a friend help you get the car to sit level with you in the car. Use a tape measure with the car on flat, level ground. Measure from the ground up to the body seam on all 4 corners.

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  • mikemounlio
    replied
    Put it on the car as is. Let the suspension free hang. The spring needs to be under tension even if the tires leave the ground. Once all under tension you can adjust even more to get more preload and a bit more ride height. But that's about it for my abilty. I put me so I had tension. All around. Then adjusted them both the same amount up just to make sure all was the same.

    Sent from my SM-N910V using Tapatalk

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  • bhearts
    replied
    Originally posted by mikemounlio View Post
    im confused by this picture!
    How do I know where to put my spring nut for install. Not Pedro ride height, not off road either

    Sent from my SM-G900V using Tapatalk

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  • mikemounlio
    replied
    Originally posted by bhearts View Post
    Where do I set my spring nut height to install

    Sent from my SM-G900V using Tapatalk
    im confused by this picture!

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  • bhearts
    replied
    Where do I set my spring nut height to install

    Sent from my SM-G900V using Tapatalk

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  • Advancedynamix
    replied
    Originally posted by F3BZ View Post
    is there any factory or race suspension design that automatically toes one side out and the other side in depending on which direction the car is being turned? would this give more ultimate control than both sides toed in?
    The festiva does this without complicated contol systems. Think about what happens to a trailing beam during articulation. The outside toes in and the inside toes out. The more negative camber you have, the more this happens. Do you think it's a fluke that these things out handle supercars with ease? Our little cars are amazingly well designed, but they detuned them. The trailing beam is the best design I've ever worked with.
    With my 5 degree spacers the toe change is almost 1:1. So basically 1 inch of suspension articulation causes 1" of toe variation between sides. I'm excited to dial this in and see what it does on the track. There is a good reason why I've spent so much time with this chassis when I have a garage full of supercars to play with whenever I want. The Festiva chassis is no joke.
    Last edited by Advancedynamix; 04-15-2016, 10:49 PM.

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  • skeeters_keeper
    replied
    Originally posted by F3BZ View Post
    is there any factory or race suspension design that automatically toes one side out and the other side in depending on which direction the car is being turned? would this give more ultimate control than both sides toed in?
    The festiva already has this in the front! It's called a steering rack... ... sorry, couldn't resist.

    Other cars have 4 wheel steering, quite a list of them actually. Some RX7s are a common one. Here's a list: https://en.wikipedia.org/wiki/Catego...wheel_steering

    Now, wether it's really beneficial or not is another issue.

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  • mikemounlio
    replied
    Originally posted by F3BZ View Post
    is there any factory or race suspension design that automatically toes one side out and the other side in depending on which direction the car is being turned? would this give more ultimate control than both sides toed in?
    Not for the festiva! and i think the 3000gt cars had something like that. I think they called it 4 wheel steer. But they canceled it!

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