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Do i need to replace the rear suspension springs? Car too low in the rear?


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This is my Project car! a 1972 240z! I have noticed that the car seems to low on the rear suspensión and always bangs on Street bumps! Do I need to replace the whole shock absorber? or just the springs. If it were the springs which Brand is recommended? Is there a set that comes with shock absorbers that come with springs?

1970 1978 Datsun 240Z 260z 280z Springs | eBay

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  • 2 weeks later...
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KYB shocks and regular Tokico springs work well.

btw your car looks great! I love white Z's.

Datsun 510, 240Z, 260Z, 280Z, 280ZX, 300ZX and Roadster parts available from Upgrade Motoring!

What about Arizona Springs? Since i only need to two rear ones? http://www.arizonazcar.com/springs.html

Should i purchase this set?

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What other alternative do i have to achive stock height and ride?

If you're looking for stock ride, and height, you'll need to look for OEM stock springs.... I'm not positive, but I think pretty much anything out that is aftermarket lowers the car, and firms up the ride... Your best bet probably is either Ebay, or a salvage yard.

The springs from Arizona Z Car states that they are "Considerably stiffer than stock" not what you're looking for

Edited by peng155
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There are two types of 260Z's. One uses 240Z suspensions, the other uses 280Z suspension. The dimensions of the springs are in the FSM, in the two Suspension chapters. Measure your "new" springs and see which ones you got. The rear ones are not interchangeable, for sure, so if you got the 280Z style you'll need to keep looking.

One way to raise the back of your Z would be to get 280Z strut insulators. They sit at the top of the strut and the 280Z insulators are taller than the 240Z's. Not a great way to do it, but if you can't get the springs it might get you by.

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There are also two different spring perch heights on the 260z. You have to measure from the base of the tube where it joins the spindle,to the lowest point of the perch.Usually where the end of the spring end seats into the perch.The early model measures 9.25", the late model measures 9.75".This was how I came up with the difference in spring heights.

Sorry I didn't want to confuse anyone. I had to find my notes going back to 2002.

When i installed a late model spring perch with Motorsports springs the ride height was 0.5" to high. Hard lesson to learn.

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