What's the best way to remove rust and protect the inside of a 748 tank , mine has some light rust on the bottom , Any ideas Cheers
I've always done it with a pint of fuel, a handful of stainless steel nuts, and a good shake, followed by flushing with another couple of pints of fuel. Short of then lining the tank with one of the resins available there isn't much you can do to stop it coming back, apart from keeping the tank full. Nasher.
I have successfully used this, POR15 Fuel Car / Bike (Motorcycle) Tank Repair Sealer (Different Sizes) | Frost Restoration Time and effort and meticulous with masking up but the end result justified the faff. Andy
Citric acid crystals(cheap on evil bay) dilute with warm water and let sit for a few days(depending on how strong you make it!) suspend a rusty bolt in the filler neck to use as a gauge of how it's working, Don't forget to remove fuel tap and cover outlet with blanking plate, When happy with results(you will be) flush with bleach(alkali ) to neutralise the acid and dry with hairdryer,then use a modern liner or use as is!
But not as much fun as letting your neighbours think you've lost it by shaking your petrol tank violently outside your garage door.
Another vote for POR15, I successfully used it on my 916 tank. It consists of three straightforward restoration processes. Clean, rust conversion and epoxy lining. The epoxy stage is trickiest as the epoxy will cling to anything, but with careful use of waterproof gaffer tape, and careful swilling of the fluid, you get a nice new interior finish.
I don't know what it is but my 916 tank is 'lined' with a black coating? It was like that from new so must have been done by Ducati. The Monster tank is just bare metal though...
Cheers lads I might have a look into that POR15 stuff . Here's how the rust looks, not to bad but gotta get it sorted.
Interesting as the inside of the tanks I have on my 748 and 853 are/were both black. I used Por15 on the 853 as I managed to stress the rear joint and it started to weep. The Por15 sorted it and left a silver homogeneous finish. Andy
As Nasher says, once POR15 is used it will be difficult to remove it as it is an epoxy resin. Saying that, if done properly, it will last the lifetime of the bike. The key is to take time doing the preparation. I bought the motorbike kit from here POR15 Motorcycle Fuel Bike Tank Repair Sealer Kit | Frost Restoration. I removed all the loose, original, black liner and rust using sandpaper. I then tried to scratch even more away using a plastic scraper, the original lining that was left had very good adhesion. The POR15 cleaning fluid is VERY strong and will clean all the years of residue from the lining. I was surprised who discoloured the cleaning fluid was when I drained it. Make sure you rinse several times using warm water. The tank does not need to be dry when you add the corrosion conversion liquid, but after rinsing that I carefully used a hairdryer to make sure it was bone dry before adding the epoxy. The hairdryer can get the tank hot enough to damage the remaining lining and the paint on the outside if not careful. I left the tank for 3 or 4 days after relining it for the epoxy to cure.
I have this very problem... Was thinking I might just try and remove the rust with something not to toxic to not damage the existing coating! Refill keep it topped up & use fuel stabilisers, just keep an eye on it for the time being. It's just a few small areas on the bottom of the tank, which is a silver colour, sides and top black in colour look fine.
I don't know whether this approach would prevent more of the lining flaking and ending up in your filter. My worry would be that once the 'integrity' of the liner has been damaged it may continue to flake off over time. Would be interesting to see how it goes.
+1 for POR 15. If rust not to bad I would not worry to much about it, fogging spray(or AC50) can remove if only surface rust. I am using petrol stabilizer for up to 5 weeks storage or empty the tank if planing not to use the bike(s) for 2 months and spray the inside with fogging spray. One bike I bought had medium corrosion, I used POR15, 4 years still no issues with the resin/epoxy coating.
I used POR15 with excellent results on a 900SS but I know a guy who used it on a Monster tank then had an expensive paint job done on it. When he put it on the bike and added fuel nothing came out. The epoxy had sealed the space between the inner and outer walls of the tank above the fuel outlet. He ended up having to buy another tank. So be warned that it is very important to keep the tank moving while the epoxy sets and don't let it rest with the fuel outlet at the bottom.
Something like this. I used Motul and Motorex, but as with engine oils I believe all the good brands are the same quality. MOTOREX All Products — Catalog Products — STABILIZER 250 ML | Motul
It prevents the break-down of petrol that is left in tank for longer periods. It also helps reduce the build up of deposits in the system.
