TOPIC:

Anyone have experience at removing old KREEM coting from a gas tank?
I was told MEK, Acetone,and so on what is the best without using any kind of gravel or junk to losen it up. he tank is actually in beautiful shape but someone decided to Kreem it and it is all pealing off in sheets.

Well, I have over the last few hours been experimenting with different solvents. I took some of the chips I got out of the tank and put them into individual glass bottles with these different solvents and blends of solvents. I will see tomorrow morning which work and which do not. I do know that if I put something into the tank to rattle around in there while I'm shaking it it will help. Since the tank is actually perfectly clean on the inside with NO EVIDENCE OF RUST. I do not want to use anything that will scratch the virgin metal. So, I have decided to put in a QUART of Pennies. They should have the mass to loosen up any coating and not scuff the steel in the tank at the slightest. (Besides the pennies are reusable afterwards.)

I have a GPz1100 tank that has been kreemed twice and interested in what you find.

I have been researching KREEM on the web for hours. The only thing which people seam to agree on about KREEM, are the profanity they use when they talk about it. The two most agreed upon sealers I have found are POR-15 and KBS. Here is a link to the KBS. It is quite a bit cheaper than the POR-15 and supposedly Just as good www.kbs-coatings.com/index.htmlas

ive used kbs on 2 tanks both failed i am not saying its the products fault but ill never use a tank sealer again.

my buddy kept saying to me "that's witchcraft that is!"
sipping moonshine as i was doing it lol maybe he was right.

should have got the wife to do it she is good at that type of stuff!

What happened to the KBS results???

first tank, the coating collapsed inside and a nasty jelly appeared in the carbs.

second tank, started going bad after 11mths rust must have started again as tank started to leak.

EEWWWWW:P

kano wrote:

ive used kbs on 2 tanks both failed .....

i am not saying its the products fault but ill never use a tank sealer again.

should have got the wife to do it she is good at that type of stuff!

Kinda speaks volumes, doesn't it? I'd wager that the tank wasn't prepped as per the instructions and/or the product wasn't used correctly.

Here's a KBS testimonial: KBS - see reply #3

I used a Kreem kit w no problems many many years ago - the tank liner is still there. If you prep the tank & use the product right, any of the kits will work.

Aren't there liner removal kits?

Yea, this has been discussed as long as kreem has been around, 30 yrs or more. You can't expect a 4oz bottle of acid mixed with 3 or 4 gallons of water to properly clean the tank. It just can't do it. So you use any sealer after properly etching the tank, you'll be fine. Get your own phospheric or muriatic acid and do it right-strong. I did a couple of my motorcycles 10 yrs ago with kreem and there is no problem. Mek will remove kreem, but it takes a long time. One more thing guys do wrong is try to apply the coating too thick. After you etch and dry the tank, add the kreem or other sealer, let it coat all the interior of the tank, then let the tank sit a few minutes, then repeat. This "repeat" is where problems will begin to rear their ugly head. Each "repeat" the sealer is beginning to get more thick. If you're not careful a 1/4" thick gooey messs will be in the tank unable to drain because it's hardened. So the best thing to do is coat the tank once, repeat maybe once more, then quickly drain it out of there before it's too late. Plenty of seal there with the added benefit, should it fail and peal, at least there's less of it to get rid of.

I used Kreem on my Z2 tank back in 1984. The interior was in sad shape and I just used gravel, naval jelly and a lot of shaking. I did this quite a few times to get all the rust and jungle krud out of the tank.

I followed the directions and it worked fine. I think I did two light coatings and let each dry for a few days. The tank is still in use today on my Z2. No peeling or any type of delamination/breakdown. ..............markerdown

Acetone will easily dissolve old Kreem tank lining. A couple quarts will be needed. One quart to do the initial dissolve and then a couple follow up rinses. POR15 is a good product for resealing and they have a good rust removing prep product also, it gets out the heavy rust.