Post by jetmechmarty on Dec 2, 2012 22:49:25 GMT -5
I am doing a restoration of a XS650SH with my daughter. The tank and sidecovers have a new professional paint job done with modern materials.
The tank has a liner in it. I don't know what it is, but it's gray. When I put gasoline in the tank, the liner started lifting. I have to remove it and replace it, and I don't want to damage the paint.
I thought I might start by putting a box of drywall screws in it and spin it in the dryer for a couple of hours. I'm sure MEK will dissolve it, but how do I proceed with that?
Classic Motorcycle Mechanics magazine (a UK publication but available in the US) did a feature on removing old liners quite recently, they went through a process of wrapping the tank in kitchen cling film, then used polythene bags and finally aluminium duct tape (the kind used on hot air ducting joints), all this to protect the paintwork.
To remove the old liner they used Dicloromethane (methylene chloride), this is the ingredient manufacturers used to put in paint stripper before environmental legislation forced them to change to chemicals that don't work, the results were pretty quick dissolving the old liner (around an hour) with no need to add any abrasive or scouring material, the tank was relined with POR15.
Failed liners is a pretty new problem in the UK as it's relatively recent that the petrol companies have started adding ethanol, the problem is that the oil company chemists are constantly tweaking the composition so the liner manufacturers are playing catch-up, what works now might not in 5 years time.
Jet: we used nuts and bolts and and little rocks and shake the day lights out of the tank,, also one time, a leangh of steel chain ( 12" ) with multiple flushings and re flushing with gasoline. The last tank, I tied down the tank to a saw horse, and used a hot water power washer, with L , nozzle on the end, to shoot left right and up top. Worked great, but DO NOT LET the TANK get too HOT,, it will mess up the nice decals you used to have. Once tank is somewhat clean, i run bike and change the fuel filters,, And always park it with full tank of gasoline. ( to prevent new rust ) Mad Max, hit nail on the head,, Ethanol, is destroyer of tank liners, fiberglass, metal, alumimin, and etc.. it is a crime to allow it is fuel. It can eat though bottom of galvenized metal fuel can and then let the fuel drip out. Preston
Post by jetmechmarty on Dec 8, 2012 11:29:00 GMT -5
By local hardware store does not have dichloromethane. I bought Kleen Strip that has dichloromethane in it. I should not have done that. The stripper is thick and I don't know how I'm going to get it out. It did destroy the liner, but I have a gooey caustic mess in there.
I believe I'm going to start with mineral spirits. Ideas? Warnings?
That would work as warm soapy water would too. Either way you will most likely will have flash rust. I would put a mix of 2-stroke oil and petro in the tank when it is clean. This will prevent the flash rust. After you get where you want to be keep the tank full of fresh petro to avoid rust or if you storing light film of oil untill riding season. These are the thinks that work for me and you will have to determine if they are suitable for you. By the way great town that you live in. Tony C. ( Missed placed Georgia Boy)
Post by jetmechmarty on Dec 8, 2012 15:21:04 GMT -5
The Klean Strip did not work. I succeeded only in making a mess. The remaining tank liner did not dissolve or turn loose. Pure dichloromethane is not available to me. What will dissolve the old liner? It appears I have removed the old stripper successfully with mineral spirits.
As far as keeping a bare metal tank from rusting, I bought some fogging oil from my local auto parts store. I'm using it elsewhere and it works.
I need a solvent that will get after that liner. I'm considering MEK.
I've thought about this and I suggest you fill the tank with screws or the equivelant and scour out as much of the loose liner as possible by shaking. The liner that is left on the insdie tank surface should be so tenatious that it will be no worry. Run fuel filters to catch any liner bits that get past the petcocks. Mikesxs has nylon screen socks that fit over the inside pipes/nipples of the petcocks if you don't have any. Those inside screen socks will be the first defense and easy to clean by removing the petcock at a later date, if needed.
Post by jetmechmarty on Dec 9, 2012 10:35:25 GMT -5
Thnx Tom. I did a good bit of shaking with mineral spirits and a length of chain. It's a mess in there. Where the liner is gone, there's no shortage of rust. So, maybe I should treat that and no new liner? I had not considered that and perhaps I should.
Dear Jet: for what it worth... I have "removed" tank liners put in place by previous owners,,,, HOURS of work, no mater which way we attacked it ,,, yes some rusty section maybe were viable,,, many tries with many products, you will still see some some brown metal areas, inside tank,, ( and my best easiest method was with a power washer, with soap then hot water) ,, afterward, rinsed with gas, and i changed the fuel filters, after running tank, even though bike was still running good. neither of bile have liners now, and i see no need from them, in my case anyways,, i may see some hint of brown on the inside, but it seems to give me no ill effects... I have run the same in line 90 degree fuel filters for years. The 77 ride, has been running for 13 years, with no tank-rust issues,, ( IT HAS HAD OTHER ISSUES !) the 75 ride, almost 3 years now, with no gas-tank borne issues. Preston
r80rt: :)This is a splendid write up, THANK YOU!!!!
Dec 26, 2015 16:54:05 GMT -5
mashermoto: What the what is this shoutbox for? Or should I shout, WHAT THE WHAT IS THIS SHOUTBOX FOR!
May 12, 2016 22:22:21 GMT -5
motormike: Good Day ...just a FYI.. Wild Cat is this Labor Day weekend. Still go'n on. A few 650's still make the scene. Various rides at different skill levels each day.. awards dinner sunday eve. BS in the park'n lot after dinner.
Aug 23, 2016 7:57:01 GMT -5
lsettle: First post in over 6 years!
Aug 28, 2016 19:45:17 GMT -5
kardon: Wow quiet here, where did they all go.
Oct 7, 2016 2:18:13 GMT -5
gggGary: XS650.com LOL
Feb 16, 2017 20:49:02 GMT -5
buell88: Anybody have any idea who built the xs650 tracker used in the Draggin Jeans Ad on Pipeburn?
May 16, 2017 16:24:09 GMT -5
joshua: The regulator/rectifier unit I got from Mikes PMA has closer hole spacing than original. Are we supposed to mill the holes to fit?
Jun 7, 2017 19:25:58 GMT -5
joshua: My bad. I found the bracket they supplied to mount the rectifier/regulator... Uh oh. How is this meant to work? Which way is it meant to mount? Looks like I have to use some spacers or something. Good instructions would be nice.
Jun 7, 2017 22:09:52 GMT -5
craig8johnson: Not sure if this is the right spot or not but oh well...
Jul 11, 2017 18:04:15 GMT -5
craig8johnson: I'm checking the charging system. I'm afraid I might have fried the last battery. With the solid state regulator (after market) what should it be charging at. The book says, I think, 15 volts. I'm hitting 17 when revved. Is that too high?
Jul 11, 2017 18:06:19 GMT -5
gggGary: Yes 17 volts is too high, about 14 volts is max, sounds like you don't have the right regulator or it's wired wrong.
Jul 13, 2017 6:54:33 GMT -5
dean: Just saying Hello, new member who is going to fix up a 79 XS650 that has seen its better days. I will definitely have lots of questions coming up.
Jun 23, 2018 16:45:32 GMT -5
tt650: Trying to breathe life into a 1980 that's been stored (indoors) for 25 yrs. Air filters are dry rotted. Have cleaned carbs but she only runs briefly on choke then stops. Need jet setting info and other ideas that might help her idle and rev.
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trix13: Hey everyone! New to the forum and am fighting those gremlins!! New charging system, ignition switch, coil and fuse box. Resistance is higher than normal on the ignition pick up so I'm trying to find one. No such luck yet.
Aug 16, 2018 8:50:48 GMT -5
trix13: Also, even though all of my connections are clean, I cannot seem to find out why , when at higher rpms, I hit the signals and the rpms pulse with the signals...hahah. same with the brake light. I appreciate all input!!
Aug 16, 2018 8:55:08 GMT -5
bob99: how do I post a question. I am new to the forum
Jun 6, 2019 10:52:10 GMT -5
adlpc: Hello all! Been enjoying your edifying posts and discussions - and as a fan of the XS650 since my early teenage years happy that I now own a 1980 Special which I plan to turn into a vintage half faired racer. Thank you all for being here!
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jimothyj: Hello everyone, I just joined & wish would have known about this site in 2014 when I brought my 1974 TX650A back from the grave. I have spent a good deal of $$ and alot of time on it. Just painted it and working on electrical, I will post pics soon,
Apr 10, 2021 2:14:13 GMT -5
louisvan: trix13 - I had a problem with my 1975 SX650. When I got to highway speeds, the engine lost power. The problem was in the connectors. At a certain vibration and the wind pushing on the wiring loom, the connector lost continuity. A bad crimp to the wire.
May 20, 2021 1:19:09 GMT -5