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Nah man, dats my baby 
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Thank you. I think Caswell tank sealer is gonna do the trick. I didn't think of soldering it. Does that actually work on a steel tank? If I do that should I put some flux on and around the pinholes and do it like a copper pipe? I don't think I have ever soldered anything but copper and aluminum. Would it stay? Maybe I should combine the two, solder it on the outside then pour the Caswell in and hit it from both sides. I will probably have to have the tank painted anyway. It looks good from far, but its far from good. I will first try to get it restored, but if its too expensive then I will just go with a repaint of a color I want to go with and screw the Honda badges back in. I will post pics after I take care of it. Thank you guys so much for your input. I appreciate it.
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If you solder, use electronic solder, with rosin flux core solder: the flux will clean the metal for a good solder joint. This works on pin holes only. Because of the small size, yes, it will work. Gasoline will not dissolve the tin/lead/whatever-they-sell-today solder metal. Cheers!
1979 CB750K (sold, 2012, but not forgotten)
1983 Kawasaki 440 LTD Belt Drive (sold, 2011)
1993 Kawasaki Voyager XII
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Sweet! Yes they are pin holes. I can barely blow air through, but the gas flows! Haha. After setting up the bike and putting gas in I was sitting on it and giving some throttle when I smelled way too much gas, and sure enough it was leaking :( I went over the tank very thoroughly and found 2 others but when I look in the tank there's not much a couple spots of rust the size of a nail head. I guess it was concentrating in those areas enough to wear thru. Oh well, I'm looking forward to using the Caswell sealer. Thanks so much for the tip brother!
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Just use JB Weld. I have repaired several gas tanks, and carburetors with it, and never had it fail. However I have seen sever tank linings fail, and that is not good in any way, shape, or form.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."
1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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I have mixed feelings about the pods on the CV carbs. I am starting to think that it should be possible to get them to work, but it will be a looks only mod, and there is a good chance the bike will never run quite as well as a stock airbox, but you should be able to get close with enough jetting and restriction on the pods. Basically don't try it unless you know what you're getting into and are very confident that you understand the carbs.
I always thought that the cb750c guys just didn't want to help people because the board was inundated with questions about them from people that didn't know what they were doing.
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
My cb750 video site
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I agree. I at first thought people would just say they don't work because of some stupid reason like they don't have them on their bike, or don't have the money to get them or don't want to spend the time to tune the bike correctly. But I realize now that the people on this forum are truthful and genuinely want to help you! I know, crazy concept huh? People on the internet that want to help random people with minuscule vintage motorcycle problems ( isn't it awesome!)? But its true! They say they don't work because they don't, and most likely they too have been suckered into buying some pod filters that look great on ebay and are cheap and installed them and found out they suck. Or they are smarter and did research before they bought them, I wish I did. There's no doubt they look awesome but don't perform. I read a post here that said you can use pod filters if you use different carbs, that sounds like a headache to me. Why mess with a good thing! Im in maintenance and I always say fix it till it breaks as a joke but with pods that's exactly what you will do to ur cb. Stock airbox homie, its the only way to go! Sent from My Verizon Wireless 4GLTE smartphone
I have mixed feelings about the pods on the CV carbs. I am starting to think that it should be possible to get them to work, but it will be a looks only mod, and there is a good chance the bike will never run quite as well as a stock airbox, but you should be able to get close with enough jetting and restriction on the pods. Basically don't try it unless you know what you're getting into and are very confident that you understand the carbs.
I always thought that the cb750c guys just didn't want to help people because the board was inundated with questions about them from people that didn't know what they were doing.
1981 CB750K
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I actually thought of jb, but I thought the eth/gas would dissolve it eventually. Maybe I'm wrong, but my tank was sitting in my friends garage hung on the wall for 7years. I think that's when the rust set in. If he woulda left it on the bike with gas in it, probably wouldn't have rusted through. Maybe I'm wrong abt that too? Anyway I think the inside needs a refresh. I'm gonna go with the solder for the outside and Caswell on the inside. If the solder falls off the outside at a later time that's fine I just need a good hole plug for the Caswell to work, guess jb would do that too. Right now I don't have any jb but I do have rosin core elect solder so ill use what I have. I ordered the Caswell sealer on Monday so it should be here by Friday. I'll post my results. Also I checked all my valve clearances last night and was no higher that 0.13 on exhaust or intake, the manual says 0.08, +0.05, or - 0.02 from that so I'm good. Surprised though. Bike has 60k on the motor and was beaten up badly. It's got a salvage title too! But the valve clearances are good! Amazing! Try to get 60k from a modern day bike and have the valve shims and cams be in spec. Although I don't know if they have been swapped before, from the looks of the bike I doubt it. Sent from Milan's Verizon Wireless 4GLTE smartphone
Just use JB Weld. I have repaired several gas tanks, and carburetors with it, and never had it fail. However I have seen sever tank linings fail, and that is not good in any way, shape, or form.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
1976 CB 750-A X 2
1977 CB 750-A X 2
1981 CB 750
1995 KZ 1000 P-14
1981 KZ 750 LTD X 2
1973 CB 350
1979 CM 185 Twinstar
1987 Honda TLR 200
1982 Honda XL 80
2005 Yamaha PW 50
South of Edan (Kansas City MO)
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I know this is a place for CB's but here's a pic of my
03 R1. 
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Salvage title? That might cause you problems depending on where you are.
Salvage title where I am basically means that I'll need to buy a replacement clean frame and build using that.
Is there accident damage? I don't see any in the pics.
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
My cb750 video site
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No in Washington state all you have to do is take it to state patrol and the cop looks at it, drives it up and down the street and slaps a salvage sticker on, as long as he deems it safe. Safe means that turn signals work, headlights work, tail light works and frame isn't bent. I'm good on all fronts. A salvage title can claim your bike even if it hasn't been in an accident, I.e. has frame mods or engine swapped, too much rust on frame or in my case sold to a salvage bike shop called Bent Bike, although it may have been in an accident and you just can't tell (no damage, but still an accident so has to have salvage title). From there the shop could have sold a bunch of parts of it and replaced them with others. There is no accident report for my bike. Kinda dumb but there must be some kind of tax loophole for the salvage shop, if automatically it has a salvage title they don't have to pay tax, or licence fees. If its salvage its upon the buyer to get it legal. That's why also my friend bought it for 500$. I'm theorizing about the tax loophole thing and the automatic salvage title for being sold at a place called "Bent Bike". Maybe when this thing was in an accident it was 1983 and records were not as complete as they would be now cause the government was too into cocaine? Haha lol. Sent from Milan's Verizon Wireless 4GLTE smartphone
Salvage title? That might cause you problems depending on where you are.
Salvage title where I am basically means that I'll need to buy a replacement clean frame and build using that.
Is there accident damage? I don't see any in the pics.
1981 CB750K
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Also it can have a salvage title, but its not street legal untill it has a salvage sticker to go with the salvage title. Sent from Milan's Verizon Wireless 4GLTE smartphone
Salvage title? That might cause you problems depending on where you are.
Salvage title where I am basically means that I'll need to buy a replacement clean frame and build using that.
Is there accident damage? I don't see any in the pics.
1981 CB750K
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Same thing here in VA on salvage titles. If someone steal a bike( car or whatever) and the key switch gets damaged and has to be replaced they give it a salvage title. It kills the resale value and you can't borrow money against that vehicle. Thats pretty much all it means.
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Also in VA you can get a salvage title for a "barn find" or if you buy from a tow lot and they don't have the title from the previous owner.
It's only illegal if you get caught.
If at first you don't succeed, use more lighter fluid
95% of Harley Davidsons ever made are still on the road... The other 5% made it home.
New Baltimore, Va '82 CB900c, 1980 CB985F/K 'Mutt"
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Your in VA,Truck?
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I received my Caswell tank sealer kit last friday and installed over the weekend. All went well with the kit. The resin (epoxy) seems to be extremely hard! Not very flexible though, I wouldn't recommend it for plastic tanks even though they say you can do plastic. It was perfect in my steel tank. It adhered really well to the inside surface of my tank. One of the steps for preping the tank is to take a box of drywall screws and a pint of acetone and throw it in the tank to dislodge any rust and "rough up" the inside surface of the tank. I don't think this step is necessary unless you have a seriously rusted out tank! I skipped this step because the filler hole on my cb is inverted and getting the screws out would have been questionable. The epoxy itself is great! I used some extra I had left over in my mixing cup to reattach the plastic nubs that go on the side covers so they can be popped in the rubber grommets in the frame. It worked well, as I said the resin is crazy hard. Mixing is very important as is a time frame. You have roughly 15-20mins after mixing the resin together to put it in the tank swirl around slowly (to get good coverage) and drain excess. Make sure the petcock hole is clear because if you let the resin plug it I can only see using a drill to get through. The instructions say to let drain upside down but I continued to swirl around until all was used up! They recommend using a second coat, they say its good insurance on a bad tank that's why I didn't pour any out. I think 1 batch is enough for a 5 gal tank if u don't drain any out. I have not put gas in yet they say 24-36 hrs is ok but I believe the longer you wait and let it cure the stronger it will be. I'm going to wait about a week. Some people on the net say it has failed them but read on and find out that they probably put gas in too early and or mixed incorrectly. Anyway i will post my results after I put gas in! Oh.. also I tried using solder? This did not work:( I think the best way is putty or jb weldor what I used is a 2 ton epoxy. Like the kind you buy in the dual tubes. Worked great!
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I'd put gas in that and let it sit for a day or 2 and make sure that the gas doesn't come out funky colors before you put the tank back on the bike, that way you don't run liner through your carbs and cause any issues.
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I don't know about funky colors because the epoxy resin is clear but a fuel flush is definitely in order. I will let it sit a day with gas, then flush with 1/4 gal. Also I have a fuel filter after the petcock so there won't be any hardened chunks floating down into my carbs, but I def want to make sure the resin does hold gas. It would be pretty crappy if it melted with the gas but I doubt that will happen.
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