Turbo Goose Posted November 5, 2012 Share Posted November 5, 2012 Hi guys I have just bought some check absorbers and was wondering if they are doing what they are supposed to..The front 2 are TRD, I think they are oil filled. Once you compress them, should they return on their own because they don't....are they just meant to absorb the shock rather than return, I'm, hoping they aren't fukdThe rears are KYB gas-a-just which do return once compressed. Quote Link to post Share on other sites
_shaun_ Posted November 5, 2012 Share Posted November 5, 2012 they dont return at all? they should Quote Link to post Share on other sites
Turbo Goose Posted November 5, 2012 Author Share Posted November 5, 2012 na they dont, you can just push them up and down very slowly? feel the oil sqelching inside..... Quote Link to post Share on other sites
Asad Posted November 5, 2012 Share Posted November 5, 2012 this happens alot...they look nicey niceysold as working etc with a nice premium due to them being jdmzzzzbut as you found out instead of just throwing them on...when u push them down they dont return/resist force (as all working shock absorbers do) so they are duff the rears are fine if they return Quote Link to post Share on other sites
Turbo Goose Posted November 5, 2012 Author Share Posted November 5, 2012 FFS, paypal claim here I come..... Quote Link to post Share on other sites
klyfax Posted November 5, 2012 Share Posted November 5, 2012 Its only street shock absorbers that return to its starting point. Race specs, do not return.Oil ones is must likely open in the top where the piston enters the damper. Gas filled, are closed so the gas can't escape... Quote Link to post Share on other sites
Turbo Goose Posted November 5, 2012 Author Share Posted November 5, 2012 Well they are hard to push in and pull out. I spoke to a mechanic who said they may be spring assisted ones which do not always return.Could they be how they are meant to be????? Quote Link to post Share on other sites
turbo Grant Posted November 5, 2012 Share Posted November 5, 2012 As long as they don't piss oil out they should be fine. Quote Link to post Share on other sites
Turbo Goose Posted November 5, 2012 Author Share Posted November 5, 2012 ah ok, no oil comes out. I've put in a paypal claim saying they don't return like they should.I'll let my mechanic have a look at them this week see what he says. Quote Link to post Share on other sites
Asad Posted November 5, 2012 Share Posted November 5, 2012 my coilovers returned and were very hard to press...^ Quote Link to post Share on other sites
Fozzie Posted November 5, 2012 Share Posted November 5, 2012 I think Funny Onion has a full set of TRD shocks and springs up for sale, you could try asking her if her set return when compressed? She says they're mint so however they are is probably right! Quote Link to post Share on other sites
Turbo Goose Posted November 5, 2012 Author Share Posted November 5, 2012 I've sent her a PM, see if she can help me out.... Quote Link to post Share on other sites
Fozzie Posted November 5, 2012 Share Posted November 5, 2012 Fingers crossed buddy. Last thing you want after crappy delivery is to find out they were knackered anyway! Quote Link to post Share on other sites
Turbo Goose Posted November 6, 2012 Author Share Posted November 6, 2012 (edited) Just read this on Passion Ford....It appears oil filled do not rebound on their ownIt is a misconception that a gas shock works on gas alone, where as an oil (normal) shock works on oil. All conventional automotive shocks work by forcing oil through a determined set of holes, but a gas shock will use compressed gas to keep the oil under pressure.This is done largely to minimise aeration or "foaming" of the oil which would reduce the effectiveness of the shock as air passes through the valves rather than fluid. The gas also helps to dissipate heat which keeps the oil cooler and maintains the viscosity and therefore the shock "rate". Gas shocks are ideally suited to long travel applications like rallying and off road. *There are many types of gas shock, twin-tube, mono-tube and remote canister combinations for super heavy-duty use like rallying and off-road racing. Most of the economical gas shocks are of a twin tube construction (low-pressure) where as most performance or race gas shocks use a mono-tube (high-pressure) system. There is no such thing as an ideal system, it really depends on the application as mono-tubes may have advantages in some respect but the high-pressure gas can act as a spring complicating the suspension design process.The main disadvantage of a gas-pressurised shock is cost which leads to a very simple rule of thumb to help avoid confusion. If faced with a choice of gas or oil for the same price, it's unlikely that the real working part of the gas shock is of the same standard and level of sophistication as the oil. You get what you pay for!!!!With regard to shock pistons rebounding when pushed in, this will not happen on oil based shocks, but on gas pressurised shocks if the rod is pressed down relatively quickly it can rebound due to the higher residual pressure beneath the piston itself.Remember also a shock absorber is actually termed a damper. This means its primary role is to damp out spring oscillations that would otherwise result in some very nasty bouncy effects every time you drove over an uneven surface!!! Edited November 6, 2012 by Haresign Quote Link to post Share on other sites
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