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Reload Thread: My system is weighing down the back of my car. What can I do?

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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by ahardy17 View Post
    the airbag idea is good, there's also adjustable air shocks. I had some in my grand marquis when I had an outrageously huge box in there, and those could lift the back up about 3 inches with a little air from a compressor. also idk if anyone mentioned it yet or it it's plausible for you, but maybe switch your box to maple or something if it's mdf.
    Never heard of using maple. Thanks for the suggestion.



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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by jkok7 View Post
    Never heard of using maple. Thanks for the suggestion.
    You could swap out the battery for ultracaps as well. I upgraded the rear springs and struts in my car to progressive rate cargo springs and it works well. They're about twice as stiff as the stock springs and get stiffer the more they are compressed.



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    Re: My system is weighing down the back of my car. What can I do?

    They do make coil spreaders that go between the coils on the spring and spread them out a little. Might give 1-2" of ride height.

    If they make bags that fit your car easily, you don't have to install a compressor and tank. Just run a line with a shrader valve on the end of it from the bags to under the bumper or to the trunk... Pump them up once a week or so. This is pretty common for 1/2 ton pickups that needs a little extra support so they don't squat so bad when loaded down.

    I'm sure you could also have some strut spacers made if the rear struts are like most vehicles. They're just a block of aluminum usually that moves the strut down and lifts the rear of the car. But be weary as it will change the alignment on the rear and it might wear tires or handle funny.

    IIRC there is about 20lbs per sheet of weight savings with Birch plywood. I don't think the juice would be worth the squeeze to make a whole new box and save 50lbs.



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  6. #49
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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by Tenacious. View Post
    You could swap out the battery for ultracaps as well. I upgraded the rear springs and struts in my car to progressive rate cargo springs and it works well. They're about twice as stiff as the stock springs and get stiffer the more they are compressed.
    how much do they run?



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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by Atimm693 View Post
    They do make coil spreaders that go between the coils on the spring and spread them out a little. Might give 1-2" of ride height.

    If they make bags that fit your car easily, you don't have to install a compressor and tank. Just run a line with a shrader valve on the end of it from the bags to under the bumper or to the trunk... Pump them up once a week or so. This is pretty common for 1/2 ton pickups that needs a little extra support so they don't squat so bad when loaded down.

    I'm sure you could also have some strut spacers made if the rear struts are like most vehicles. They're just a block of aluminum usually that moves the strut down and lifts the rear of the car. But be weary as it will change the alignment on the rear and it might wear tires or handle funny.

    IIRC there is about 20lbs per sheet of weight savings with Birch plywood. I don't think the juice would be worth the squeeze to make a whole new box and save 50lbs.
    I won't try the spacers based on the risks. I got a wife kids to think about. I wish I would've known abou the birch or maple before just built my new box. LOL



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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by jkok7 View Post
    how much do they run?
    Ultracapacitors are around $200 for a single bank. I spent $200 on my springs and struts. If you install them yourself, it's really cheap... Of course, I didn't have the tools to do so



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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by Tenacious. View Post
    Ultracapacitors are around $200 for a single bank. I spent $200 on my springs and struts. If you install them yourself, it's really cheap... Of course, I didn't have the tools to do so
    I know a mechanic. I can have him put them on as I don't know what the heck I'm doin when it comes to springs and struts. So bout $200 uh?



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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by jkok7 View Post
    I know a mechanic. I can have him put them on as I don't know what the heck I'm doin when it comes to springs and struts. So bout $200 uh?
    I bought coil spreaders for 30 bucks ..installed in 30 minutes and i have 130lbs of subs plus a box 160 lbs of batts plus 2 amps amp rack etc ..no sag




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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by NASTY08IMPALA View Post
    I bought coil spreaders for 30 bucks ..installed in 30 minutes and i have 130lbs of subs plus a box 160 lbs of batts plus 2 amps amp rack etc ..no sag
    Thanks man. What brand and where did you get em from?



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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by jkok7 View Post
    Thanks man. What brand and where did you get em from?
    Not sure the brand as therez probably a ton of companies make the ..they all look and work the same..got them at local tint/stereo shop ...just call around




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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by NASTY08IMPALA View Post
    Not sure the brand as therez probably a ton of companies make the ..they all look and work the same..got them at local tint/stereo shop ...just call around
    Gotcha.



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    Re: My system is weighing down the back of my car. What can I do?

    Look into get a airlift 1000 kit. They don't cost much at all and easy to install.
    Air Lift 1000 Air Bags for Coil Spring SUVs and Vans | Air Lift Company




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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by CerwinVega_Fan View Post
    Look into get a airlift 1000 kit. They don't cost much at all and easy to install.
    Air Lift 1000 Air Bags for Coil Spring SUVs and Vans | Air Lift Company
    Yeah $90 on eBay. Sounds better than buying coil spreaders and things like that over and over. Thanks mane.



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    Re: My system is weighing down the back of my car. What can I do?

    Quote Originally Posted by jkok7 View Post
    Yeah $90 on eBay. Sounds better than buying coil spreaders and things like that over and over. Thanks mane.
    No problem man. Glad I could help.
    There are Vids on youtube that will help with the installation.




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    Re: My system is weighing down the back of my car. What can I do?

    I have a 2005 malibu that had serious azz problems. Two 100 lb batts, about 180 lbs in box and subs. So about 400 lbs including the amps. I just bought a couple pairs of rubber spring spacers. Bought em at O'Reilly for like $15. Good for a couple inches of lift and I didn't notice a ride difference.




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