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Rusty Rockers

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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mkc1
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Year and Model: 850 GLT 1997
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Rusty Rockers

Post by mkc1 »

Hi,
There are quite a number of rust spots on my 1997 850 GLT. Before putting significant work into tackling them, I thought I should take off the rocker panel covers and see how bad the rockers were to try to decide if it was even worth it. They look somewhat less rusty than I expected, but there's still a fair bit of rust. What's your opinion on what needs to be done and if it's even worth trying to fix?
Thanks!
ImageE4135E27-642C-4A89-B7EB-2F99A6B9513C_1_105_c by mkc2006, on Flickr
ImageF1AAC46E-B578-4A2C-B0CC-4A6E3F6758FD_1_105_c by mkc2006, on Flickr
ImageEDAC600D-2C96-4F60-8900-3281E87DEC84_1_105_c by mkc2006, on Flickr
Image1F6E1F8B-0976-4172-B548-2BB1ABF02FD0_1_105_c by mkc2006, on Flickr
Image97D1D5B1-4504-4A20-A05B-7F863EB79B19_1_105_c by mkc2006, on Flickr
Image4389E57F-D918-48DE-B68D-49FC27C8CDCF_1_105_c by mkc2006, on Flickr
ImageC9898439-9C9A-40B3-AAC2-584CBA22A2D8_1_105_c by mkc2006, on Flickr
Image71DCE195-97E2-4825-A723-0931D9589479_1_105_c by mkc2006, on Flickr
Image71DCE195-97E2-4825-A723-0931D9589479_1_105_c by mkc2006, on Flickr
Image0B21C27C-7F80-477E-8BEA-827001DF32E8_1_105_c by mkc2006, on Flickr
ImageE8E8A382-77E2-4A78-870C-BABEFC0BEE77_1_105_c by mkc2006, on Flickr
Image02A8A4DE-5934-446D-BCE3-F95BE4A21D12_1_105_c by mkc2006, on Flickr
"Learning mechanics is easier than learning male psychology. You can figure out an engine; you can never figure out a man." -- Pepa Marcos, Mujeres al borde de un ataque de nervios [paraphrased]

1997 850 GLT "Volvo"
1997 850 AWD "Junior" (for parts, sadly)

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wizechatmgr
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Post by wizechatmgr »

If it were me - hit it with a needle scaler, some rust converter, self etching primer and then some paint.
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD 2.4 T -- ~231k miles
1998 V70 2.4 NA -- ~184k miles

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BlackBart
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Post by BlackBart »

Rusty Rockers....is that a middle-aged cover band?

Looks like the exterior trim held the moisture and grime and salt in against the paint. Is this typical of what Ottawa roads do to cars?
ex-1984 245T wagon
1994 850T5 wagon
2004 XC70 wagon BlackBetty

scot850
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Post by scot850 »

The rockers can get corroded on the back side as well. Check especially at the rear of the rockers in the area of the rear axle mounts. They can get really crusty there.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
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1997 Volvo 850 SE NA - Went to niece in California - Sold
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Vova585
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Post by Vova585 »

1. Is there any other rust related damage known to you-subframe, strut areas, badly rusted brake and fuel lines.
2. How much work are you able/willing to invest Into it in case you will decide to do it yourself(can you live without a car for 2 weeks, cost of repair related materials, your labor(time off work or time when you can make extra income, or wife will kill you for leaving her alone with kids)
3) can you still jack up the car at proper spots without bending entire rocker in?
4) overall condition of the car and how much longer you expect/ or need it to last.


Based on the photos it looks like moderate amount of rust to the panels and fender. It is possible that it may last in current condition another 1-3 years. At times touching something like this might open a different can of worms and you can't stop blowing time and money into it. Be realistic with yourself and your abilities and long term goals(financial first and foremost) and you will find your answer.

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mkc1
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Post by mkc1 »

I'm encouraged that no one has said it's too far gone or that it needs to be taken to a professional shop to have the rockers replaced. If they're in good enough condition that stripping off the rust and repainting should keep it going, that's great.
Vova585 wrote: 13 May 2025, 11:10 1. Is there any other rust related damage known to you-subframe, strut areas, badly rusted brake and fuel lines.
2. How much work are you able/willing to invest Into it in case you will decide to do it yourself(can you live without a car for 2 weeks, cost of repair related materials, your labor(time off work or time when you can make extra income, or wife will kill you for leaving her alone with kids)
3) can you still jack up the car at proper spots without bending entire rocker in?
4) overall condition of the car and how much longer you expect/ or need it to last.
1. There's a lot of body rust -- boot lid, fenders/wings, etc., but nothing that seems structural with the possible exception of rust on what I think? are the inner rockers, where the jacking points are mounted, to the extent that one of them seems to have been pushed up into the rocker and come loose from its anchorage to the floor pan? Photos below.
2. I can invest a fair amount of time, but I have no experience with body work so I'll be learning as I go. My husband will be helping and the cats can look after themselves for short periods of time. :)
3. The jacking point seems broken on one side, but the pinch welds still seem reasonably strong. I usually jack on the subframe bolts.
4. I've been driving the car for the last 25 years and would like to continue doing so for the foreseeable future. Professional restoration would be ideal but finding a restorer and the money to have it done is proving elusive, so I'd like to do all I can myself to keep it from deteriorating further. Obviously more should have been done to prevent it rusting to this degree, but I moved from the South where such things aren't so much of an issue so I knew little of things like oil undercoatings or the need for frequent washes in the winter.

Thanks again to everyone for their input.
Photos of inner rockers?
ImageB6FB992A-5D2A-4244-A249-07DEC009FDB7_1_105_c by mkc2006, on Flickr
Image96601D3C-F486-4107-A478-CC4A85EBB602_1_105_c by mkc2006, on Flickr
Image08A7D846-9C48-4B2B-A4EB-C5C90A83CBB6_1_105_c by mkc2006, on Flickr
ImageD5F2540F-B07C-4B3C-900E-FDB01CA98E8F_1_105_c by mkc2006, on Flickr
"Learning mechanics is easier than learning male psychology. You can figure out an engine; you can never figure out a man." -- Pepa Marcos, Mujeres al borde de un ataque de nervios [paraphrased]

1997 850 GLT "Volvo"
1997 850 AWD "Junior" (for parts, sadly)

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wizechatmgr
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Post by wizechatmgr »

On the bright side, the more these cars rust, the less they weigh and generally the better the fuel economy will become =P
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD 2.4 T -- ~231k miles
1998 V70 2.4 NA -- ~184k miles

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abscate
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Post by abscate »

can invest a fair amount of time, but I have no experience with body work so I'll be learning as I go. My husband will be helping and the cats can look after themselves for short periods of time. :)
Idle cats are the Devils minions….
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Faber
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Post by Faber »

These would be the standard steps for this type of problem:
1 Brush the surfaces with rotating steel brush, so you can remove as much rust as possible and realize how deep it is
2 Rust converter
3 Weld new pieces of sheet metal (if necessary)
4 Epoxy primer
5 Filler
6 Paint
Don't forget to enshure the water drains are free from dirt.
From the inside (usually from the safety belt case), spray the specific waxes in sill boxes.

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mkc1
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Post by mkc1 »

abscate wrote: 13 May 2025, 14:20 Idle cats are the Devils minions….
So true.
"Learning mechanics is easier than learning male psychology. You can figure out an engine; you can never figure out a man." -- Pepa Marcos, Mujeres al borde de un ataque de nervios [paraphrased]

1997 850 GLT "Volvo"
1997 850 AWD "Junior" (for parts, sadly)

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