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Tank Rust - anyone ever tried this
Any of you Guys ever heard of doing this ? to remove rust -my 87 needs it
BEHR brand no. 991 Concrete Etcher and rust remover is one very good candidate. Don't waste your time and money on the special motorcycle tank rust removers and coaters. Too expensive, hassle, and causes future clogged fuel filters/systems if not done "just so". Instead, I use the BEHR product which is simply a phosphoric acid based liquid, in your case with light rust, a 50/50 mix with water is more than good. The best part: It's $12.00 a gallon from Home Depot and maybe other places, it's reuseable if you filter it through a rag or coffee filter, etc, and it turns a rusted tank to shiny metal in one day or less. You can also use the product called "CLR" as it too is phosphoric acid based but cost twice as much for the same results. CAUTIONS: It will eat at petcock rubber, and don't let it get on your paint, that's it. Other than that, go for it and enjoy a new looking inside of your tank. TIPS: Fill your tank all the way toward the top and let sit for 12-24 hours. No BBs, gravel, marbles needed, period. Syphone out the liquid or let it drain out of the hole where the petcock goes. You will have to figure out the best way to accomplish this part. |
Rust remover
I used a couple of bottles of vinegar and some bags of fish tank gravel and agitate every half hour and rotate the tank. You wouldnt believe the crap that it removed. Used in my GPZ900R TANK which are well known for rusting out. Worked a treat but with anything dont leave in to long. Good rinse out with clean water and then a hair dryer to help with drying. I then taped a bit of flexible tubing to a vacuum to get the rest of the gravel out I could not shake out. I then used CASWELL PHENOL NOVOLAC EPOXY TANK SEALER. Did the trick for me no more crap through carbs bloody good stuff.
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Thx Pilgrim I was reading a Caswells review on webbikeworld and it is well recommended and seems the one to use
I've used vinegar on marine thermostats to the same end ! They say CLR works good too with a couple of lengths of chain in the tank for the same purpose you used gravel to get any loose corrosion out ! hmm think the ole vinegar with abrasives (rocks or chain) is the cheapest ;) :D .... yep that'll work - no fish and chips for a while - we'll be all out of vinegar :) |
The last time I cleaned out a tank (84 GPz1100 - seeing a trend here) I used muriatic acid and steel BB's so I could use a magnet to get the stragglers out.
I also used diesel fuel a couple of times (don't ask, the acid did much better. Also, don't tell the EPA ) |
Phosphoric acid has been used for a long time to convert rust. There are many "specialized" products on the market that are just diluted phos in various forms. It turns rust to ferric phosphate (black stuff) and it scrapes off.
I found this out years ago when I was buying phosphoric acid by the barrel and using it as a nutrient to feed microorganisms. (Phosphorus is an essential nutrient to all living things) I always enjoyed putting the stuff in a gallon jug and then watching people's reaction to how heavy it was. It's clear so it looks like water, but it weighs nearly twice as much (15lbs vs. 8lbs). People get this "wtf" look on their face because their mind can't quite comprehend it's weight. :D Gotta be careful with the strong stuff, though. It will ruin your day. It will also disintegrate concrete floors. Ooops. lol.. |
I had a weeping seam on my tank so had it coated with a proprietary white "ceramic" coating which has held up well over the past two years and looks great - nice clean white tank inside.
I tried all sorts of other fixes but once a seam goes inside the tank it's hard to repair from the outside. I have an old CB750 which has rust in the tank so will try phosphoric acid. Always something to learn around here............:) Anyone know a cheaper way to get rid of black algae in a swimming pool ? :) :eek: Sounds like Kilgoretrout's been growing "magic mushrooms" again LOL |
Holy Hell Trout showed up :D with shrooms :)
Guess that's what the Behr 911 does - converts the rust to black ferrous material read somewhere else a box of drywall / sheetrock screws are a great abrasive too |
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