Author Topic: Help. Tank no longer fits!! (Read 6103 times)

BollarNPS · « **on:** October 10, 2015, 04:42:34 PM »

I know that this seems stupid but my tank no longer fits on my bike. I lower the triple tree to put clip ons on but I don't feel that would change anything cause both points of attachment move together. I feel like maybe when I took it to get the tank lined maybe they some how cause the tank to bulge out on the bottom. It's hitting on the neck of the frame( not sure if that's correct term). I might go talk to them tomorrow unless anyone has another idea of what could of happened. I took some pictures of the tank to try to show where it's hitting and where it seems it may be bulging. Has anyone had this happen when they or someone else lined the inside of your tank?

The little marks is where it is hitting.

Trying to show it here. Opinions and thoughts please.

Powderman · « **Reply #1 on:** October 10, 2015, 04:47:16 PM »

Pics don't show much. How can pouring a liquid in your tank make the metal Bulge? Not sure what the issue is.

Gene · « **Reply #2 on:** October 10, 2015, 04:50:26 PM »

Quote from: Powderman on October 10, 2015, 04:47:16 PM

Pics don't show much. How can pouring a liquid in your tank make the metal Bulge? Not sure what the issue is.

Yeah - that's just odd. . . . unless they poured in molten lava or something - weird. Are you sure all of your wires etc. are in the same place they were when you took the tank off? Try playing with some placement of under-tank spooling.

Edit: and by that I mean cables, wiring, etc.

BollarNPS · « **Reply #3 on:** October 10, 2015, 05:44:43 PM »

Ya there are no wires even close I've changed nothing. I didn't know if sealing the tank could cause an expansion of some sort. Fit flawlessly before I did that. The two c shaped metal things that hook on the two rubber bangs on the front also barely catch like the tank spread. I know this sounds stupid but I sat there looking at it from all angles scratching my head for close too two hours.

tlbranth · « **Reply #4 on:** October 10, 2015, 06:21:05 PM »

See if you can latch onto a CB owner close by to do a comparison.

BollarNPS · « **Reply #5 on:** October 10, 2015, 06:44:53 PM »

Is there anyway to search members by area?

qside · « **Reply #6 on:** October 10, 2015, 06:53:11 PM »

I had that happen to a tank. Someone use compressed air to dry it out and stretched the tank. Now the bottom of the tank is no longer parallel. Pretty much useless now

BollarNPS · « **Reply #7 on:** October 10, 2015, 07:09:04 PM »

Might have to go to talk to the place that did mine then

BollarNPS · « **Reply #8 on:** October 10, 2015, 07:30:09 PM »

Is there anyway someone with a 79 cb650 can flip their tank over and measure from side edge to side edge where it bends up where the rubber bungs slide in

754 · « **Reply #9 on:** October 10, 2015, 07:57:03 PM »

If it has side to side movement on new the mounts, the tank has been bulges..easy to do with compressed air.. You might be able to push it back...

BollarNPS · « **Reply #10 on:** October 10, 2015, 08:51:40 PM »

ya i mean i know i can make it work but i am unsure if bending the tank back or hammering so it will fit will cause the lining on the inside to crack and therefore completely ruin everything and make me throw wrenchs in all directions!!!!

Powderman · « **Reply #11 on:** October 10, 2015, 09:25:55 PM »

Tank sealer is just a liquid that gets sloshed around inside till completely covered. I can't think of anything in the prep process that requires compressed air to be blown into a sealed tank.

BollarNPS · « **Reply #12 on:** October 10, 2015, 11:17:08 PM »

well i think i screwed up by letting a "professional" do it. so untill i talk to them monday i dont know if they tried to use compressed air to speed dry it and finish it quickly. The only thing i do know is that nothing has been done to the bike that would change the fact that the tank doesnt fit. I believe that the people that did my tank and let it soak for a week or so to get rid of the gas used compressed air to dry it faster to get it back to me.

harisuluv · « **Reply #13 on:** October 11, 2015, 12:29:13 AM »

Compressed air to dry the tank is normal. If you're going to go talk to them, don't accuse them of "using compressed air to dry the tank."

They will probably look it you funny and say "Yes, yes we did, what's wrong?"

How bout some pictures of your bike where the tank sits and general setup you have. What changed, anything else? Tank rubbers?

martin99 · « **Reply #14 on:** October 11, 2015, 01:26:22 AM »

Using compressed air to dry the tank would not alter it's shape unless there was nowhere for the air to escape, and as the aim of using it is to purge the tank of liquid, which also needs somewhere to escape, sealing up a tank completely before using compressed air doesn't make sense.

Excessive heat and cooling cycles are a different story though, and it is also possible your tank has been over-heated to dry it out and then cooled abruptly which may have caused an area to shrink and distort. We're talking about a lot of heat here though, so while it's possible it's also unlikely unless your shop got 'dick of the year' to do your prep work.

As others have said, I would tactfully explain your problem and ask them to walk you through the process they used. Be sure to let us know how you get on

oldhatt45 · « **Reply #15 on:** October 11, 2015, 06:26:27 AM »

BollarNPS,

What was the prep work that was done to get the tank ready to do the lining?

Reason I ask is that if someone used something like an acid that causes a reaction to remove or convert the rust in the tank, and they kept the tank sealed up tight, that could have caused the gases inside the tank to expand and bulge the tank.

You might want to check on that as well.

Charlie

BollarNPS · « **Reply #16 on:** October 11, 2015, 06:42:36 AM »

Of course im not going o go in there and start accusing them! i just dont know how it happened. I did clean it with some vinegar but i had it installed on the bike sense then before i sent it to shop. Here are some better pictures showing how off the tank is. Unfortunately i dont have great pictures of before. Here is before

Here is showing that i have nothing in the way of the tank.

If i put the bolt part in place first the front cant even go down enough to reach the bung. This is a side shot of how high up the tank is sitting.

This is a birds eye pic of how apart the hoops are that connect to the rubber bungs. i have not changed the bungs either.

And if i put the hoops on the bung which is very loose and has alot of play back and forth this is how it sits where the bolt would go on the seat.

Thanks again for looking and helping.

oldhatt45 · « **Reply #17 on:** October 11, 2015, 07:19:28 AM »

BollarNPS,

OK, so you used vinegar to clean the tank. Gases from the vinegar reaction could cause a gas build up inside the tank.

When you did that, did you have the tank sealed up tight?

You said that you did it while you had the tank on the bike, right?
Was it hard to remove the tank after the vinegar treatment?
Did you (or anyone else) do any additional cleaning of the inside of the tank?

Just trying to figure out what happened, cause this is kind of weird to me.

Charlie

BollarNPS · « **Reply #18 on:** October 11, 2015, 07:28:08 AM »

weird to me to as this is big loss in funds:(. They said they clean the tank but im pretty sure he said they just let it soak in dawn for like 2 weeks to removed the gases before welding pin holes. it wasnt on the tank when i used the vinegar but i put it on the tank after i used vinegar is what i meant sorry.

Powderman · « **Reply #19 on:** October 11, 2015, 07:50:19 AM »

You would think that if the tank were pressurized it would expand or bulge the underside to be too tight of a fit. If you pushed the undersides inward (to the frame rail) due to pressure, it wouldn't sit down on the frame. I'm stumped how this happened.

BollarNPS · « **Reply #20 on:** October 11, 2015, 08:11:25 AM »

Me aswell. im at a complete loss. and even if it was the people who coated that caused this they would own up to it or reimburse.

strynboen · « **Reply #21 on:** October 11, 2015, 11:36:38 AM »

think they have weldet..and a gas /asytolen/oxy explosion have happend...and widet the buttom some heigh pressure/heat have been inside there

Powderman · « **Reply #22 on:** October 11, 2015, 11:42:50 AM »

Looking at the pics we're talking almost an inch in width. That would be hard to do intentionally by welding and cooling.

harisuluv · « **Reply #23 on:** October 11, 2015, 01:04:58 PM »

Well if they were welding pinholes, surely they checked it for leaks afterwards? Maybe they used too much pressure?

Btw, they "soaked it in dawn for like two weeks." This is weird, so you just cleaned it with vinegar and then they're going to let it sit in dawn and WATER for two weeks?? It would have looked worse than when you brought it in.

BollarNPS · « **Reply #24 on:** October 11, 2015, 01:47:29 PM »

Yeah idk they iinitial told me it would soak for two days and then i just kept calling them and they would delay and delay. they ended up soaking it for two weeks seemed odd to me to.

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Author Topic: Help. Tank no longer fits!! (Read 6103 times)