Author	[Modern View]
CH(Upstate,NY) 10-29-2012 17:32:41 12.54.94.22 Report to Moderator	Is it gasoline proof? Tanked my genny carb Friday, blew it out and reassembled it. Genny ran a little rough until I shut the fuel off than ran smooth until it ran out. Took the carb apart and found one of the ears that the pin that holds the float broke. Put a little JB to hold the pin and let it sit in case I needed it tonight. So it it gas proof? If not, any recommendations? [Reply]   [No Email]
Fred from MO 11-01-2012 11:16:12 69.55.155.226 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   I have used it on a rust out area in a tractor gas tank. The rusted area was literally the size of a pin hole. If the tank was full it would slosh out. I used JB weld on that and it is still holding 9 years now. Also used it on the bottom of an oil bath filter housing that had rusted (again with pin holes). Still working there. Used it on a JD carburator that had developed a porosity problem. It has held there too. I think as long as it is not flat out dunked in gas for a long time it will hold. [Reply]  [No Email]
hintocw 10-31-2012 12:16:31 71.54.51.223 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   I've used JB to repair small holes in a number of old style metal fuel cans. No problems with leaking after being repaired for at least 10 years. [Reply]  [No Email]
dave2 10-31-2012 02:27:14 139.139.35.17 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   I think so....... Prolly the main problem with the stuff (that gives it the bad name) is the users that needed a "quick fix" and done the preperation "quick" also..... [Reply]  [No Email]
Mark6005 10-30-2012 15:43:05 70.225.166.71 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   Only used it once 18-20 years ago on a couple leaks on my 8n radiator. Still have the 8n and no leaks. Hope I didn"t jinx it [Reply]  [No Email]
Jim in LA 10-30-2012 14:44:55 65.0.13.121 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   My Dad patched the gas tank on our 8n with JB weld. He used a piece of pillow case saturated with JB weld that had been thinned with paint thinner and it is still holding. I think we used about four tubes. The patch was about 6x8 inches. We first tried using gas tank epoxy but the patch just fell off after curing. A neighbor told him to use the JB weld and paint thinner and it worked. I used JB weld to seal a cracked brass emulsion tube (i think that's the right term) on my Harley carburetor years ago and it held up until last year when I disassembled the carburetor, I discovered the JB weld had started to soften. One of these days I will get around to patching it again so I can go riding. [Reply]  [No Email]
JRSutton 10-30-2012 09:23:12 75.130.109.233 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   I had a carb float crack off once - tried jbwelding it back in place as it was my only real choice before rain got on the hay that was down. Lasted a few months, but eventually got all rubbery and fell apart. Somebody said it has to cure properly to work - and they may be right. I certainly didn't let my bandaid job cure properly - had to get it back up and running quickly. [Reply]  [No Email]
Jason S. 10-30-2012 06:13:39 174.228.68.171 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   In general regular JB Weld will hold for a while but it usually turns loose, but go get a pack of JB Marine Epoxy it is much more resistant to fuel. [Reply]  [No Email]
M-MAN 10-29-2012 21:56:00 184.39.144.12 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   The old slow drying jb weld is gas proof when cured properly. Had an old mac chainsaw with a fuel tank busted half into that I put back together with it. Ran that saw several more years & it never let go. Try to use it like glue & it won't work. [Reply]  [No Email]
G1355 10-29-2012 19:24:29 67.224.60.152 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   I had luck but I let my tank sit empty for a week a year later it still holds [Reply]  [No Email]
t.r.k. 10-29-2012 19:16:44 71.31.64.233 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   3 years ago the tank in my '69 1 ton started leaking. Pretty big deal since its in the back of the cab. So I replaced the tank. On the bottom of the old tank was an old JB-weld patch. I bought the truck in '93 so it was on there then. . . 18 or 19 years. But I wonder if it was really the ethanol in the gas that loosened it up. Your post reminds me of the Auto Mechanics shop back in the 80's. I broke a float lug off on a carb. in a volkswagen rabbit. My teacher told me to take it and show it to the instructor in the welding shop. The old guy-probably 60+ years old- builds up the area with something he called 'sil-fos' or some such, cuts it back to shape with a Dremel Tool and drills a new hole for the float pin. It worked fine. [Reply]  [No Email]
Ultradog MN 10-29-2012 19:08:52 184.100.104.240 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   If I was the dictator of all the world the first thing I would do is outlaw JB Weld. Then I would outlaw women voting. I used JB on a carb bowl once and it did not last more than a week or so and it sluffed off. I have also cleaned and soldered more than one fuel tank that someone used JB on. I find little use for the stuff. [Reply]  [No Email]
redtom 10-29-2012 18:56:46 71.90.155.125 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   won't last. Bought a tractor once, ran good for a while then flooded. Took carb apart, seller had glued the brass float to the arm with JB, gas "melted" the JB. [Reply]  [No Email]
JMS./MN 10-29-2012 18:25:50 209.237.125.241 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   I used JB weld and fiberglas stripping to patch a Ford p/u tank over 5 years ago- corroded around the mounting straps. Warmed the JB tubes in hot water- mixed easier. Was a second tank, so let it dry a couple weeks. Still holds now. [Reply]  [No Email]
Dean 10-29-2012 18:19:42 152.216.3.5 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   Gasoline tolerant epoxies are available. I've used such to repair worn float pin bores in Ford/Holley carburetors. Dean [Reply]  [No Email]
504 10-29-2012 18:11:45 199.127.54.155 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   You really never know, if you got it clean and let it sit for 24 it may work fine. There is a product made to use in gas too. [Reply]  [No Email]
JB weld 10-29-2012 17:57:13 96.53.210.246 Report to Moderator	Re: JB Weld in reply to CH(Upstate,NY), 10-29-2012 17:32:41   I think it could work but leave it for 24 hours to dry. [Reply]  [No Email]