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Rear shock absorbers...
Harry B - 31/1/06 at 06:14 PM

Dear all,

I am currently going about prepping to fit my Sierra rear axle,and need some shock absorbers that fix to a bracket on the subframe and to the side of the body using a bracket.I'm very confused however between adjustable shocks and gas dampers.Do the dampers,which have no thread on them,just fix onto the rear axle without a spring,and the air inside is used to provide the spring effect(compressed air bouncing back),or do you have to buy springs that fit to the dampers?
Any enlightenment on my ignorance would be greatly appreciated....

C10CoryM - 31/1/06 at 07:17 PM

http://www.ridetech.com/productinfo/cat04images/shockwave_prodshot.jpg
Thats air ride which uses air to support the vehicle and a damper in the middle.

http://www.indiamart.com/jantashockabsorber/images/pic4.jpg
Thats a damper which is JUST a damper. Requires a spring to support the vehicle.

http://www.modernperformance.com/dcx/2k_kw.jpg
Those are coil overs that are dampers, and springs to support the vehicle.
Hope that helps.

MikeRJ - 31/1/06 at 11:34 PM

quote:
Originally posted by Harry B
.Do the dampers,which have no thread on them,just fix onto the rear axle without a spring,and the air inside is used to provide the spring effect(compressed air bouncing back),or do you have to buy springs that fit to the dampers?
Any enlightenment on my ignorance would be greatly appreciated....


What is normaly refered to as a "gas damper" is a normal damper that has a pressurised inert gas inside that prevents the oil foaming so gives more consistent performance. It is only a damper however, so still requires a spring to support the vehicle.

OEM dampers with no thread on the outside can be either gas dampers or plain old oil based dampers, but most always need a separate spring.