Cascade Crew

Twilightoptics

Who has done this?

I've gotten about 90% of the chunks out I think. Flushed with the steam cleaner at work about 40 times. Always a few 1/8 of a dime size crums that come back out, then I suck out with the shop vac.

There is some residual rust in there. What's the best product to throw in there for curing/prevention? Lots of info out there, looking for first hand experience.

Ciao!
-P

Dewey316 · Posted: Fri Mar 30, 2012 6:08 pm Post subject:

Depends on how bad it is. I used some naval jelly on a motorcycle tank I had. It did a pretty good job, then I did the normal motorcycle tank rust removal / treatment coat stuff.

Depends on the tank in question, but rust in the tanks of motorcycles is pretty common, you will find a TON of info on that side of things if you search some motorcycle forums.

QwkTrip · Posted: Fri Mar 30, 2012 8:54 pm Post subject:

I used to know this but I can't remember what it was.... Toluene? Confused

I simply sold my fuel tank for that reason and got a 4th gen tank. Problem solved.

aaron_sK · Posted: Fri Mar 30, 2012 9:08 pm Post subject:

That's just paint thinner, Jon. Razz

It definitely needs to be lined with something. When I did the Mercury the tank was real rusty and leaking. In my naivete I just had a local radiator shop burn it out and solder it. It was fine for a bit but then the rust particles started showing up in the filters and in the carb bowls. Rolling Eyes

QwkTrip · Posted: Fri Mar 30, 2012 9:25 pm Post subject:

Sorry, I misread. I thought he wanted something to clean it out. Ya, I didn't get that right. I know it started with a "T". Now for some reason I've got the word "tetrachloroethylene" rolling around in my mind. Obviously I don't actually look these things up because I don't really care. I just let you guys sort out all the crap I post. Laughing

I have no idea what to use for surface sealant. What is the factory coating inside the fuel tank?

Al Hasse · Posted: Fri Mar 30, 2012 9:39 pm Post subject:

Just a thought, but POR 15 makes a tank sealer and of course, recommends its own stripper/cleaner for preparation of damaged or older tanks.

http://www.advanced-rust-protection.com/mm5/merchant.mvc?Screen=PROD&Store_Code=P&Product_Code=TS&Category_Code=TankSealers

chevymad · Posted: Fri Mar 30, 2012 10:28 pm Post subject:

You need a good rust remover. One of the thin ones like Oxbow or just phosphoric acid. Pour it in and put in a short length of chain. Seal up the tank and agitate it so the chain bangs around and knocks the rust flakes off while the acid takes off the fine stuff. Then like Aaron said you need to coat it to seal all that crap off. Your local paint store will probably have something for this. I havent found a bad POR product yet either.

I tried using Eastwoods coating once and it didnt work for crap. Our gas dissolved the stuff. So whatever you use make sure its gasahol safe.

Twilightoptics · Posted: Sat Mar 31, 2012 8:30 am Post subject:

Too many baffles for a chain. The super hot water and slowing it arounf was working so far. Where do I get the acid?

chevymad · Posted: Sat Mar 31, 2012 9:15 am Post subject:

Not sure where you might find a generic. You can get it at Napa sold as Iron Etch for painting. A gallon uses the part #GAL6878. Here is the martin senour data for it.
http://www.martinsenour-autopaint.com/media/pds/english/8102.pdf

Also the other product I was thinking of is Ospho. You might find that in paint and hardware stores too. It's a phosphoric acid based rust convertor.

If a chain doesnt work what about a few large nuts? Just something to beat up things a bit.

aaron_sK · Posted: Sat Mar 31, 2012 9:58 pm Post subject:

If you just want phosphoric acid you can buy it cheap by the gallon at any hardware store. It's used to clean tile and grout. Not sure if the stuff sold as a "rust converter" has anything else in it.

Twilightoptics · Posted: Tue Apr 03, 2012 2:21 pm Post subject:

http://www.summitracing.com/parts/POI-FTRK/

$74 FOR THE WHOLE KIT. Looks like a good way to go.