Rust scab treatment

[ajlelectronics]

On the Scorpio, there are many rust scabs caused by stone chips that I need to deal with. Sanding it back to bright metal leaves rusty pits and of course they need cleaning out before priming. What is the most reliable method of treating it, apart from chopping more metal out?

 

[rcx132]

Media blasting will get the rust out but the abrasive dust isn't good for your car so I only blast if I've stripped the car. Next best thing I find is remove what you can by sanding or surface prep tools (e.g. poly discs) and then rust removal gel like Deox Gel.

To be honest if you sand off what you can that's probably enough and is probably all most people do. The issue with rust is that paint doesn't stick well to it. If sanding removes 70% of the rust then you have ~70% adhesion which is enough maybe?

 

[marlinspike]

Bilt Hamber deox gel gets into rust pits, though it's difficult to get it to stay on vertical surfaces. You have to cover it with clingfilm and sticky tape over it. Quite expensive too, but it does work.

 

[RaceDiagnostics]

I sand then use a rust eater gell if I can't blast, then epoxy the area.

Here is an example.

And after a lot of agitation with a wire brush and a lot of time and applications I got this.

Other side

Put some filler into the pits and flatted then two coats of LS109 epoxy.

 

[Rig Pig]

I sand then use a rust eater gell if I can't blast, then epoxy the area.

Here is an example.

And after a lot of agitation with a wire brush and a lot of time and applications I got this.

Other side

Put some filler into the pits and flatted then two coats of LS109 epoxy.

That's brilliant thanks, I have exactly the same job to do on my truck, I was just about to ask how it was tackled.

 

[ajlelectronics]

Bilt Hamber now ordered. Cheapest place is their own site at £15.90 posted.

 

[Burdekin]

Bilt Hamber now ordered. Cheapest place is their own site at £15.90 posted.

Keep it wet and give it a good few scrubs with a decent wire brush or wire wheel on the grinder. Wash off with water and repeat until all black bits are gone.

 

[slim_boy_fat]

Bilt Hamber now ordered. Cheapest place is their own site at £15.90 posted.

Damn!! I'sorry, came too late to this]. Is it too late to cancel your order, even by phone tomorrow? They were very helpful guys when I spoke to them on the phone before I bought it, and they might just co-operate given that it won't have been sent if you move sharpish in the morning.

I have practically a litre of this here, I was going to offer to decant and send some for you.

 

[ajlelectronics]

I have practically a litre of this here, I was going to offer to decant and send some for you.

That is a very kind offer. I will leave the order as is, mainly because it would be annoying for them to cancel.

 

[ajlelectronics]

This is one of the scabs, not sure if I should just bite the bullet and replace the sill because of the crease and scabs. However, I have never done a sill and not sure how much work it will be?

How is the top of the sill attached?

 

[Burdekin]

Outer sills are normally just spot welded in. You should be able to take it off, repair it if worth repairing, fix any rust in the middle and inner and then plug weld back in place.

 

[ajlelectronics]

Outer sills are normally just spot welded in. You should be able to take it off, repair it if worth repairing, fix any rust in the middle and inner and then plug weld back in place.

How about the top of it, I can't find a seam there?

 

[Burdekin]

The ones I've done have all been spot welded on as the outer is basically just a cosmetic cover. Got a pic of the top with the door open?

 

[daedalusminos]

That's slightly more than a rust scan, looks like it's perforated, a patch welded in at minimum. Then you've got the gash that would be best cut out.

I don't know the Scorpio, but some cars the outer sill is integrated with the whole side of the car. Repair panels may be available but you need to weigh up how much time/money you're willing to spend.

 

[gaz_moose]

just cut it out and weld a patch in.

 

[marlinspike]

I'd have a good jab at that with a screwdriver to see how solid it is. The replacement panels don't seem too expensive.

http://www.carz2.co.uk/index.asp?function=search

 

[ajlelectronics]

I would love to cut it away and replace it, not being a fan of half a job. Mk3 Granada sills fit apparently and are around £50. The part that bothers me is that I can't see any seams denoting where the panel is fitted, unless as described above the panel is part of the front and rear wings. I know that I can still chop it out but I want to be sure of doing a good job having never done one before. My local bodyshop man has promised to pop in to advise me some weeks ago, but clearly can't be bothered.

 

[armalites]

What about one of these?

http://www.ebay.co.uk/itm/New-Spot-...579104&hash=item21210cf5c1:g:gWMAAOSwx6pYrZdY

 

[Burdekin]

Putting the old ones back on will be easier if not too much to repair. Drill and screw in some self tappers as locaters before removing the sill. Then fix it, screw back in place and weld up. That is of course it it's easy enough to get the sill off.

 

[ajlelectronics]

Ordered a pair of sills and wheel arches, so we will see how brave I am when they arrive.