Thread: Problem with triangulated 4-link

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Originally Posted by Dorsey

Just an update - I verified that there is no binding in the suspension links, so I'm now looking into my coil-overs. I weighed the rear end of the car (using a 2nd class lever and a bathroom scale) which worked out to 1050# with two adults. The QA1 tech support recommended a spring rate of 125#/in., but I bought 140# springs in case my weighing procedure is off. The springs should arrive in a few days. When I get the new springs installed and take it for a test drive, I'll post the results. I had 200# springs, so this should make a serious difference.

Yup, way too much spring for that weight. When you put the new springs on, might want to make sure the shocks are adjusted the same, too.....

The springs arrived today, and 45 minutes later I was on the road. As I'd hoped, it made a big difference and the car doesn't jump all over the road when I hit a bump, which was my main goal.

However, the car now bottoms out on bumps that it didn't before, but I started with the basic unloaded settings so my next move is to adjust the springs so that the shock travel and frame clearance are what they were before with me sitting in the car.