D3 REAR END BOUNCING AFTER SPEED HUMPS

**gasman** · 16th May 2013, 01:14 PM

Hi All.
Our D3 has non air suspension and is raised 40mm. It has just started to develop bouncing in the rear after going over those pedestrian speed humps at crossings and so on.
Shocks are possibly 100k old. First I thought springs, but then
I thought shocks, what does the forum think?
Also, if the springs are 40mm higher than standard, do I require a special/longer shock? and which brand of shock/springs would you all recommend. I will be installing them myself.

Regards,
Gm

**jonesy63** · 16th May 2013, 01:24 PM

Hi GM,
+1 on rear shocks.

IIRC, Dobinsons are the preferred brand for D3 coilers.

**BMKal** · 16th May 2013, 01:34 PM

Definitely the shocks are buggered. Probably nothing wrong with the springs at all (if the vehicle is still sitting level).

Can't help with what to replace them with though.

**theresanothersteve** · 17th May 2013, 07:52 AM

Dampers (shocks). I've got mates (albeit high performance vehicles) who replace dapers at 50K, if it wasn't for the cost they'd do it with each set of tyres! Bit over the top for me, I change 'em at 100K.

**TerryO** · 17th May 2013, 08:32 AM

Originally Posted by theresanothersteve

Dampers (shocks). I've got mates (albeit high performance vehicles) who replace dapers at 50K, if it wasn't for the cost they'd do it with each set of tyres! Bit over the top for me, I change 'em at 100K.

Have to agree with your mates, most shocks are lucky to still be working anywhere near their best after 50k.

The thing is they go off gradually so we don't tend to notice how bad they have become until they are completely stuffed.

**kingo** · 17th May 2013, 10:02 AM

Hi GM
I have the same set up as yourself, coil sprung with a 50mm lift. Would be very interested to know the options for replacement shockers, especially with a 50mm lift. My D3 has 167000kms on the clock and am assuming on the original shockers. It's due for a service soon and I'm thinking of getting the shocks replaced.

Any suggestions forum users? Would air spring shocks be the same. I'm guessing as the air sprung D3 can raise up to 100mm??? the same shocks for a lifted coil sprung D3 should be fine.

Cheers Andrew

**CaverD3** · 19th May 2013, 02:21 PM

There was an issue with the early King Springs overextending the shocks, not sure which ones though.

**Graeme** · 19th May 2013, 07:08 PM

Originally Posted by TerryO

Have to agree with your mates, most shocks are lucky to still be working anywhere near their best after 50k.

The thing is they go off gradually so we don't tend to notice how bad they have become until they are completely stuffed.

I totally agree and changed the last ones under 60K.

**murray073** · 20th May 2013, 03:58 PM

Hi Jonesy63

I have a D3 coiler & was thinking of lifting it with a set of springs & shocks. Have you had any experience with the Dobinson Springs & shocks? Would it be better to use King springs & Dobinson shocks or all Dobinson, or maybe some other brand shocks? The car has 67 000km & I will be towing a 1500 kg off road camper.

Cheers,

Murray

**landoman** · 26th May 2013, 07:53 AM

Originally Posted by TerryO

Have to agree with your mates, most shocks are lucky to still be working anywhere near their best after 50k.

The thing is they go off gradually so we don't tend to notice how bad they have become until they are completely stuffed.

Have to agree with this statement ....my rear shocks have just been replaced (at 50K ) and they seemed to just go off suddenly ie were stuffed .....rear end bouncing around after a bump and very harse ride

QUESTION ....does the air suspension also loose some of its effect over time leading to a harder ride or are the shocks alone what give the smooth ride

My vechicle still seems a little harder than it was when it was new even with the new rear shocks .....could that be to do with the airsuspension or something else

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