rusted deadpedal wet footwell carpet

Does your Mitsubishi L300 make a strange noise? Need wheel alignment specs?
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sealica
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rusted deadpedal wet footwell carpet

Post by sealica »

Wondering suggestions for repairing, removing rusted on bolts for the "deadpedal" the footrest to left of brake pedal from driver POV. Removed wet carpets to inspect for leaks and let area dry.

was thinking:
-liquid wrench or somesuch but it appears after cleaning with wire brush and wd40 that it may need bolts cut off ...
-rust converter, sand, metal tape and/or bondo

i was reading this thread viewtopic.php?f=6&t=1993&hilit=footwell&start=15#p14073 Will post pictures when not on smartphone.
sealica
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rusted deadpedal wet footwell carpet

Post by sealica »

Screws appear to be phillips, although stripped/rusted to robertson/square-head condition ...
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sealica
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rusted deadpedal wet footwell carpet

Post by sealica »

There is a small hole which has developed beside the dead-pedal bracket. Rusted through so that I can see the cement driveway below.
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Also an amusing find - a Japanese coin :p
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ChuckBlack
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rusted deadpedal wet footwell carpet

Post by ChuckBlack »

If the #2 Robinson fails with heat, use a 1/8 cutring disk and cut the head slightly to use a flat head screwdriver. Still with heat... if it still fail cut it off...
L300 Jasper, :-D
L300 Chamonix, :-)
Pajero Mini, :-(
Pajero GDI :o
Pajero DiD 8-)
sealica
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rusted deadpedal wet footwell carpet

Post by sealica »

So I ended up getting the one screw off with vice grips, pentrating oil, and a torch lighter. The second I drilled the head off ... there is a screw sticking out about three washers thick, but I can't get a good enough grip to turn it. Third (last screw) is stuck on there with a rusted piece of the bracket remaining ...

Hitting the hay for the night, but it was progress.
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ChuckBlack
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rusted deadpedal wet footwell carpet

Post by ChuckBlack »

Holy the rust in there... I'm amazed at how much you have there. I lifted the carpet on mine when I bough it after seeing others owners with all their rust. Lucky me none so far. I've been rust proofing the van in and out for 2 years now. Is your plan to remove and weld in a new floor pan? If so I would just cut the whole floor around it as you will need to do so to have a rust free weld.
L300 Jasper, :-D
L300 Chamonix, :-)
Pajero Mini, :-(
Pajero GDI :o
Pajero DiD 8-)
sealica
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rusted deadpedal wet footwell carpet

Post by sealica »

Yeah. The majority of the rust was actually on the deadpedal which I removed; going to have to fabricate a new one once I get it patched up.

I've talked to my dad, and some friends about the issue to create a gameplan, but there is much disagreement about the whole "patch it with epoxy fibreglass" VS "weld metal in there" VS "use adhesive to stick metal in there."

My gut feeling is that unless the metal is an exact match to the metal used in the floorpan then it will only encourage rust as; unlike metals breed rust from what I understand. My gut feeling is to just grind all the rust away, use a rust converter, paint everything, and then do an epoxy fibreglass patch. There are some fuel lines or something directly underneath the holes so I'm going to have to see about removing those temporarily to do the grinding.

I'm just not sure why so many feel welding is superior to epoxy. I'm not convinced by the arguments I've read ... if the hole was large like 8" or 12" or a major structure I can understand, but I don't see how welding metal in there for a 2" hole is going to prevent rust any better than an epoxy patch.

In any case a little choked that after all my Delica shopping it came to this. I love the beast, but I wanted something without rust. In retrospect it's like what should I have done differently? Started taking the car apart pre-purchase?

It is what it is - I'm hoping to get 10-15 years out of the vehicle (obviously with some overhauls) - but I'm okay with this repair needing touch ups. The rest of the vehicle is actually pretty good rust-wise, although there are some other areas - just less bubbly and serious. Plan on doing a good paint job this spring/summer; DIY; don't need it to look showroom ;)
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Growlerbearnz
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rusted deadpedal wet footwell carpet

Post by Growlerbearnz »

From a longevity point of view, welding in a patch means the repair and the surrounding metal will flex as one. A bonded repair will flex at the join, opening up the seam to trap more water.

From a strength point of view, a welded-in repair will crumple more like the original floorpan, but if your floorpan is crumpling in this vehicle you've got bigger things to worry about.

Whatever steel you weld in will be close enough to avoid galvanic corrosion. The dissimilar metals thing is really only an issue for hugely dissimilar metals: steel against aluminium, mostly. Even steel against stainless steel isn't usually a problem (though welding steel to stainless can be tricky).

That said, you're not replacing the entire floor, just patching a couple of holes. I'd try the quick and easy solution first. I would apply a fibreglass patch, let it cure for a week or so, then coat it with underseal/stone chip on both sides to give it the best chance of lasting. If it rusts out again *then* do it properly.

In retrospect: you should have owned a Delica previously, then you'd know what to look out for on this one ;-). Everything has a learning curve, and the view from the top of this one is awesome.
Nothing says "poor workmanship" more than wrinkles in the duct tape.
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