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Old 05-01-2013, 09:38 PM   #16
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Joined: Dec 2008
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Side thought, and I'll take any answer that sounds like it may be based on just a little fact...

Since a plastic tank will not rust, what would be the reasoning for coating the inside?
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Old 05-02-2013, 06:01 AM   #17
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Joined: May 2006
Location: East Virginia
Oddometer: 888
I've stripped/sealed some 300 tanks over the last
15 years. It's always been virtually impossible to
install Kreen such that it does not fail, and quite
difficult to remove when it does...

MEK works best, but that's nasty, dangerous stuff to
use, and hard to dispose of once used... It'd be nice
if someone(s) sued Kreem out of business.

I use Por 15, but like getting a good paint job, proper
preparation is vital, or Por 15 can fail too.

There are many types of plastics; some don't deal well
with gasoline and/or alcohol: Google "Ducati tank swelling".
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Old 05-02-2013, 08:29 AM   #18
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Location: Dearborn, MI
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Originally Posted by bwringer View Post
Who said anything about a plastic tank?

Anything that would dissolve Kreem (we seem to have votes for both acetone and MEK here; dunno which is better or correct) would also run the risk of damaging a plastic tank, so you'd need to consult a polymer chemist...

But yeah, I know the POR15 stuff is rock-hard when it sets up, so it would be a pretty bad idea with a plastic tank for that reason alone. I haven't seen a sample of the cured Caswell stuff.
There are lots of plastic tanks out there. Some swell up, others delaminate from today's witches' brew everyone thinks is gasoline. I've never seen a plastic tank that's been Kreemed, so I wouldn't comment on how to get it out.

Caswell is a phenolic epoxy that sets up almost clear with a slight yellowish cast. It works well as long as the instructions are followed exactly. I've used it on rigid plastic tanks with good results. I don't think anything would work well with the flexible polyethylene tanks sold for dirt bikes.
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Old 05-12-2013, 08:00 AM   #19
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Location: Canton, Georgia, USA
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I've had a tank done at Apex Cycle in Ellijay (2 hours from Athens). They have a bunch of tank liner failure / repair pictures on their web site
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Old 07-26-2013, 06:08 PM   #20
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Thanks msells!
Having awkward profanity laced conversations with myself since 1989!
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Old 07-27-2013, 12:17 PM   #21
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Originally Posted by Flashmo View Post
Side thought, and I'll take any answer that sounds like it may be based on just a little fact...

Since a plastic tank will not rust, what would be the reasoning for coating the inside?
Ask the Ducati crowd, VERY sore and still festering subject.
2004 BMW R1100S / 2003 Ducati M800Sie / 1986 R80 G/S / 1993 Suzuki RMX250 / 1981 BMW R100RS (Sold ) / 1977 Kawasaki KE100 (1st Bike )
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