1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Rear spring upgrade needed

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Old 09-17-13, 07:32 PM
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Thunder from downunder

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Rear spring upgrade needed

My 84 GSL has had sport springs for a long time, I cannot recall which ones without checking the car. They were an off the shelf sport lowering spring.

My car has had a LOT of mods since.

Now when I have two people on the car the rear fenders rub on the tires.

I need a numerically higher spring rate, what are my options?

I am not scared of cutting them down.

I want enough spring not a really stiff rate so I can use this as a touring event ride for days at a time.

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Old 09-18-13, 09:12 AM
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Waffles - hmmm good

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Get skinnier tires! LOL!
Old 09-18-13, 11:13 AM
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Not an option with nearly 400hp and 400 ft lbs
Old 09-18-13, 11:41 AM
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premix, for f's sake

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You could try some spring rubbers. They are rubber or urethane blocks that sit between a pair of coils, pretty much removing one of the spring coils from operation and in turn increasing spring rate
Old 09-18-13, 04:37 PM
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'85 12a
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^ Good idea. Cheap, easy, effective.
Old 09-18-13, 07:01 PM
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Rotary Freak

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Are your rear fenders rolled? That solved my problem.
Old 09-19-13, 05:35 PM
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Thunder from downunder

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Wink

Originally Posted by elwood
Are your rear fenders rolled? That solved my problem.
Yes, if they weren't rolled the lip wound have sat on the tire not rubbed on the edge.
Old 09-21-13, 02:26 AM
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I know that finding them is a huge issue these days, but I'm really pleased with the adjustable rear perches. Combine that with an adjustable shock and your desired spring rate, and you should be all set. Turn the shocks down for long rides, crank them up when you're playing around.



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