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MOT Fail - Rear Subframe corroded

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Bloody hell has it been parked in the ocean? I've never seen one that bad before. [emoji15][emoji33]

 

Told ya!

It was advisory last year, so has obviously gotten worse over the last twelve months.. I guess I just had no idea quite how bad it had gotten.

It wouldn't take much to shear it by the looks of things, which is really worrying. I mean, I appreciate that members of a car forum etc we're a little 'beardier' than most.. but who checks under their car to note the state of their beams every month or two?

 

Told ya!

It was advisory last year, so has obviously gotten worse over the last twelve months.. I guess I just had no idea quite how bad it had gotten.

It wouldn't take much to shear it by the looks of things, which is really worrying. I mean, I appreciate that members of a car forum etc we're a little 'beardier' than most.. but who checks under their car to note the state of their beams every month or two?

I know I do. Can't vouch for everyone else though. lol

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Blimey, that is bad.  The replacement looks much bettter!

  • Author

Blimey, that is bad.  The replacement looks much bettter!

 

Yeah, I honestly don't know how it's so bad.. I know the car originally came from Stranraer, so whether it's the salty air or what I just don't know. There's no rust on the bodywork etc, so who knows. Get the new one prepped with some Buzzweld (which does look the tits to be fair, thanks Octyal!) and let the garage play swapsies.

The old one looks like a deep sea wreck :(

Mmm.... so salty coastal air will kill a car pretty fast then it seems :s

Mmm.... so salty coastal air will kill a car pretty fast then it seems :S

 

Yep, it will. As will a car that comes from North of the border unfortunately. Have seen several over the years from Scotland that have suffered very badly with rust, even after only 5 years.

Even though it's deviating slightly off topic - I wouldn't exactly class that as an anti roll bar, more of a reinforcement, as it isn't attached to a part of the suspension that compresses, such as the damper. It resembles a torsion bar, rather than an anti roll bar, a bit like the rear suspension on PSA vehicles, designed to twist, strengthening what would otherwise be a rather weak rear beam, without adding to it's mass by making it a tube or solid.

 

Which is a perfect description of how an ARB works; it twists when the wheels move up and down relative to each other.

Which is a perfect description of how an ARB works; it twists when the wheels move up and down relative to each other.

 

True, except an anti roll bar is linked to the suspension uprights, so when they compress they force the other side to compress as well, with some degree of twist. A torsion bar is, as you say a sort of anti roll bar, but more of a "twist" limiting device/spring (for want of a better description). In this case I would say that the tube in question is more for reinforcement than any actual benefit to the suspension

Bodge, that information is fantastic! 

True, except an anti roll bar is linked to the suspension uprights, so when they compress they force the other side to compress as well, with some degree of twist. A torsion bar is, as you say a sort of anti roll bar, but more of a "twist" limiting device/spring (for want of a better description). In this case I would say that the tube in question is more for reinforcement than any actual benefit to the suspension

I've seen ARBs connected to the suspension arms rather than the uprights. Also, since we're talking torsion springing, you do realise that spring weight is measured in pounds per degree rather than pounds per inch?

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