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Old 6th June 2019, 21:08   #1
Dc99
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Default Why do i have to replace suspension parts every year?

Just had the scruff mot'd. Every year same old fail...... front suspension.
Drop links in particular, plus a wishbone this year. Sinced i've owned the old scruff i've never had a pass because of this. Is this a 75 bugbear?


thanks Dave.
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Old 6th June 2019, 21:26   #2
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As soon as I read the title I knew the thread would contain 'droplinks'. Had my 04 f/lift a year and the droplinks were replaced just before I bought it, they now need replacing. On my old car I replaced the links for a set from DMGRS, they were still good 4 yrs on when I scrapped the car. I'm guessing quality is key.
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Old 6th June 2019, 21:28   #3
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Quote:
Originally Posted by Dc99 View Post
Just had the scruff mot'd. Every year same old fail...... front suspension.
Drop links in particular, plus a wishbone this year. Sinced i've owned the old scruff i've never had a pass because of this. Is this a 75 bugbear?


thanks Dave.
cheap parts yes, it is very common. drop links can be had for £10 per pair, but there are preferred ones, that are around £30 per pair, with new old stock originals being something like £30 each
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Old 7th June 2019, 08:30   #4
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Cheap parts are one reason they don't last. I have a theory as well that engine mounts sagging also increases wear on the drop links. Check your engine mounts are good especially the top offside mount for collapse. This puts the engine lower than it should be placing the drive shafts at a different angle, maybe this is putting pressure on the drop link joints that they shouldn't have. when I changed mine it improved (a bit) the bang as you go over road humps (mines the diesel = heavy engine). Our 1.8 takes the road humps much better. Mine has failed twice on drop links the last two years - but due to the rubber boots perishing at the bottom of the link.


*N.B - The 1.8 has also failed on drop links in the past, but they do last a lot longer than on the cdt.
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Old 7th June 2019, 09:07   #5
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Default Repetitive suspension failure

Quote:
Originally Posted by Dc99 View Post
Just had the scruff mot'd. Every year same old fail...... front suspension ... Is this a 75 bugbear?
No Dave. My view on this is rather contentious but nevertheless experience tells me it's true.

The most likely reason is driving technique. Yes, none of us likes to admit that we sometimes don't get it right, myself included, but no-one can go through life without making a mistake now and again.

So what do I mean by 'driving technique'? Principally I mean traversing speed humps and driving through standing water.
  • I've observed that 99% of drivers drive over speed humps as fast as they possibly can. This applies maximum stress to suspension components, particularly from the chamfered speed 'tablets' which, when straddled, apply an outward force to the wall of the tyre, a part which is not designed to resist this.
  • Our roads are poorly maintained and standing rainwater is commonplace. By driving at an appropriate speed it is usually possible to avoid driving through such puddles, ponds or lakes! But again, everyone ploughs on regardless dousing their suspension components in a high pressure blast of water which probably contains grit, mud and other detritus. This will obviously hasten the deterioration of anything it hits.

Since I changed my approach to these hazards several years ago I have never had to renew any suspension components. My 75 has its original "drop links" and front lower suspension arm (it's not a wishbone! ) rear mountings and it's now 20 years old!

The other possible reason Dave is that your MOT tester is setting the standard above what is reasonable with the result that you are paying for repairs which others would consider unnecessary. However, whenever I suggest this, I hear that the company in question has been friends of the family for decades and their work is always of the highest quality and so such a misjudgement could not possibly be the case.

There you go.

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Old 8th June 2019, 21:23   #6
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Thanks for your replies guys. I must admit i have used cheaper parts and live in a part of the country voted the worst roads in the country. 'MORE SPEED HUMPS AND POT HOLES THAN POPULATION' But, averaging less than 3k a year and being no boy racer (it's a cdt) you expect more than a year from aftermarket parts?? Will give the engine mounts a good look over too. Thnks.
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