Rust problem
Hope im posting in the right section here.
Car is currently stored for the winter in my garage atop heavy duty plastic.
Git down underneath today to have a look around and was suprised by the level if rust present on undercarraige.
I purchased the car a year ago, with 55k miles and it hasn't seen the rain since, the previous owner drove it year round but it is still immaculate topside- paint like new.
Its been a NY car all her life and im sure the salt has taken its toll, im seening patches of rust which has bubbled and peppering of rust throughout, any suggestions on cleaning this mess up before she gets worse?
Black car with greenish underbody paint here, the exhaust is completely covered as is the rear end
Remove heavy rust down to the surface rust and coat/paint with POR15 or equivalent.
POR15 requires the surface rust layer with its' moisture content to bond.
Every little pebble and stone on the road that kicks up will scratch paint and invite rust, even in environments with no salt. (Salt will just help accelerate things.) Roads essentially sand blast the underside of the car - winter or summer.
I intend to keep my car for a long time and the plan is to take the body off in the next few years, re-paint and undercoat the body and then powder coat the frame.
Until you are ready to do something radical, I'd hold off on treatment. If you try to refinish parts, you'll take off the factory-applied rust inhibitor and the rust will just come back faster. (Unless you don't drive it.)
Ive heard it wont adhere to painted surfaces?
Id love to do a full body off resto in the future but would also like to address this asap
I never but the car through automatic car washes nor did the previous owner thus salt is still sitting on the underside. I can actually see white spots all over the green undercoat/ treatment paint which is clearly salt crystals which i now want to wash asap.
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How about an application or aspho, and follow it with another product like rustoleum hammered etc???
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In regards application of these two is there a time window i have to follow to apply the por paint- if i wash and prep today can i paint next week or does the paint need to be applied asap? Also in regards the clean areas will the por bond to non rusted sheet metals on underside
i painted a new rear axle with por-15, and it was a week later after doing the metal-ready rinse when i applied the paint. there is a time window when applying the paint so it doesn't cure on you in the can, read the instructions. it helps to refrigerate opened cans and even paint from a can that's been refrigerated, gives you a little longer working time if you need it. i bought the 6-pack mini cans, and only used 1/2 of one can to do the rear axle two coats.
Just wana try and keep this beauty the best i can.
So should i wash it first with regular soap to remove salt, greese etc or just use to marine clean to tackle all under there?
funny enough the whole front end from the firewall forward is spotless, not a pinhole size of rust, obviously the previous owner washed out the front wheel wells and engine area frequently.
as you can see it looks mainly surface, however the exhaust is bad also, the bolts and clamps are rotten, plan is to remove all the heat shields and any support parts that are bolted on, sand scrape and scuff all surfaces to be painted -im going to stop where the frame meets the engine mounts as i dont want to paint up into the front wheel well.







