1971 Honda CT90 Gas Tank

[BowlingSS]

I picked up a 1971 CT90 for my wife. The gas tank looked like the tank was linked with tar. I figured it was a failed lining. I was just wondering how everyone else was getting it cleaned out. I have tried vinegar and backing soda, bowling water and also had a few small short chain and shaking the tank. I am getting ready to tie some Brillo pads on the chain with hot water. I have shaken this tank until I arms are sore.
Any help would be appreciated.
Bill

 

[Jim]

Acetone?

 

[Sparkyduc]

Acetone?

I picked up a 1971 CT90 for my wife. The gas tank looked like the tank was linked with tar. I figured it was a failed lining. I was just wondering how everyone else was getting it cleaned out. I have tried vinegar and backing soda, bowling water and also had a few small short chain and shaking the tank. I am getting ready to tie some Brillo pads on the chain with hot water. I have shaken this tank until I arms are sore.
Any help would be appreciated.
Bill

You might look on eBay I think you can get one for less than $50 shipped. That’s what I did on mine. I’ve restored about three or four of the CT 90s and I’ve had to buy two used tanks off of eBay.

 

[BowlingSS]

Acetone?

I was just thinking of acetone. Thanks, I am getting low so I will need to buy some more.

 

[BowlingSS]

You might look on eBay I think you can get one for less than $50 shipped. That’s what I did on mine. I’ve restored about three or four of the CT 90s and I’ve had to buy two used tanks off of eBay.

The tank I saw were worse than the one I have.
Thanks.

 

[JJames]

The tank I saw were worse than the one I have.
Thanks.

Maybe it IS tar. But is it actually failing , or just sloppy looking. If it survived your first attempts unscathed, maybe it's OK. Acetone is a lot hotter than anything else you mentioned so if it has to go, that might do 'er. Have fun.