Finally after having waiting months for some free time to open for myself,i have decided to work on my project 79 CB750F. The gas tank is VERY rusty inside and im contemplating if i should waste my time and money and clean the rust out? or buy a tank with very little rust in it to save me the headache. Any suggestions guys?!
Rusted gas tank
- Thread starter rnkwill
- Start date
Might as well try and salvage the tank. Vinegar works well and is cheap, or evaporust or whatever you prefer. There's a bunch of options. Throwing a bunch of BBs or drywall screws in and shaking it up helps. If you pop some pinholes you can braze them shut.
Sent from my iPhone using DO THE TON
Sent from my iPhone using DO THE TON
badfish61063
New Member
Has anyone ever tried CLR in a gas tank?
badfish61063
New Member
I'm not saying the drywall screws and BB's don't work but its a whole lot easier to used a chain. You get a grip on one section of chain and you can pull it out. It's a lot easier than trying to shake those remaining 5 BB's that just wont find their way back out ;D
B541Niner said:
You know, I can't find this stuff anywhere.
DannyMotor
Blood, sweat and beers.
Other than that chemical...
3 gallons of vinegar, 1 cup of salt, and a 2 gallon jugs of water with a cup of baking soda dissolved in each of them is all you really need. $20 or so.
1. Empty the tank, seal all the openings (or leave the petcock in)...
2. Put 1 gallon of vinegar and 1/3rd cup salt into the tank. Seal the tank, and shake the ba-jesus out of it. Let sit for over-night (10 hours) upright.
3. Shake tank again, pour out vinegar-salt solution. Re-fill with 1 gallon of vinegar and 1/3rd cup salt. Shake it again. Let it sit up-side-down over-night.
4. Repeat step 3, only leave it standing on end (back of the tank facing down).
5. After 3 nights, 3 re-fills and a bunch of shaking... put 1 gallon of HOT water with a cup of dissolved baking soda into the tank. Shake it... pour it out. Repeat with another gallon of HOT water/baking soda solution.
6. Rinse out tank with a bottle of 95% Rubbing Alcohol.
7. Spray the inside of the tank with WD-40... go crazy, empty the whole can if you need to... but make sure every square inch of the inside of the tank is covered until you're ready to use it.
If after Step 4 you still have a lot of rust... you'll need to repeat step 3, but before you seal the tank, put a length of chain, nuts and bolts, or ball-bearings (bb's are too small) into the tank... about a hand-full will do. Then shake it till the cows come home, let it sit for an hour or so... shake it again, let it sit in a different position for an hour... and repeat. Check the progress after 3 or 4 rounds of shaking and letting it sit.
This has worked for me on everything from in-frame moped tanks, to motorcycle and automotive gas tanks.
3 gallons of vinegar, 1 cup of salt, and a 2 gallon jugs of water with a cup of baking soda dissolved in each of them is all you really need. $20 or so.
1. Empty the tank, seal all the openings (or leave the petcock in)...
2. Put 1 gallon of vinegar and 1/3rd cup salt into the tank. Seal the tank, and shake the ba-jesus out of it. Let sit for over-night (10 hours) upright.
3. Shake tank again, pour out vinegar-salt solution. Re-fill with 1 gallon of vinegar and 1/3rd cup salt. Shake it again. Let it sit up-side-down over-night.
4. Repeat step 3, only leave it standing on end (back of the tank facing down).
5. After 3 nights, 3 re-fills and a bunch of shaking... put 1 gallon of HOT water with a cup of dissolved baking soda into the tank. Shake it... pour it out. Repeat with another gallon of HOT water/baking soda solution.
6. Rinse out tank with a bottle of 95% Rubbing Alcohol.
7. Spray the inside of the tank with WD-40... go crazy, empty the whole can if you need to... but make sure every square inch of the inside of the tank is covered until you're ready to use it.
If after Step 4 you still have a lot of rust... you'll need to repeat step 3, but before you seal the tank, put a length of chain, nuts and bolts, or ball-bearings (bb's are too small) into the tank... about a hand-full will do. Then shake it till the cows come home, let it sit for an hour or so... shake it again, let it sit in a different position for an hour... and repeat. Check the progress after 3 or 4 rounds of shaking and letting it sit.
This has worked for me on everything from in-frame moped tanks, to motorcycle and automotive gas tanks.
K
Kamn
Guest
Also, Metal Rescue works really well. Just buy one 4L jug and turn your tank at different angles every few hours, by the next day its spotless inside, dump it all back into the jug because it can be reused and also no worry about flash rusting.
The Prep and Etch is 40% concentration of phosphoric acid. You can buy it in full concentration on Amazon. It's value is that it doesn't eat steel, but instead just converts iron oxide. Just as potent as any acid, just for different materials.
Sent from my iPhone using DO THE TON
Sent from my iPhone using DO THE TON
I have used vinegar, but it does eat aluminum so don't leave your petcock on there if it's a keeper.
