JB Weld

[jrbartlett]

Is JB Weld impervious to gasoline? Anyone have any experience with a gasoline-related repair?

[Guest sixpack2639]

I use JB Weld to cure Quadrajunk syndrome, you know, when the 4 plugs in the bottom center of a Quadrajet start leaking. I cover them with JB Weld allow to cure for 24 hours and presto, no more leak. I've cured several carbs that way.

[critterpainter]

JB weld will work in the SHORT term, but in my experience you will have to re-apply it every year and a half to two years as the gas does soften it over time and will cause it to seep.

There are other higher-quality products out there, but the names escape me right now.

Bill

[Peter J.Heizmann]

Hello, jr...

JB Weld attributes had been discussed quite a few times over the years.

For past opinions/comments/experiences, try using the "Search" function at the top of the page. Herein, the AACA archives most, if not all, posts since the inception of the AACA Forum.

Click on "Search"

On the left block, click on "All Forums".

On the right, "Keyword Search Term", type in "JB Weld". Click on "In Subject".

Dates: Newer than 5 years, Older than 1 week.

All of the discussions concerning JB Weld and Welding Cast Iron shows up.

I hit next until the 3rd page appears.

Their is an 11/11/03 thread entitled "JB Weld".

Not sure, but, you may find some helpful information.

Regards,

Peter J... <img src="http://forums.aaca.org/images/graemlins/grin.gif" alt="" />

[RansomEli]

I have used an JB Weld-like compound to repair gas tanks. Has the consistency of clay and comes in two parts. Mix them together and apply like JB Weld. Works great. My repairs have lasted over 2 years and still going strong.

[52deluxe]

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">I have used an JB Weld-like compound to repair gas tanks. Has the consistency of clay and comes in two parts. Mix them together and apply like JB Weld. Works great. My repairs have lasted over 2 years and still going strong. </div></div>

i used jb weld to fix a drain pipe in my kitchen as its cast iron and they tend to break after 40 years. it had developed a hole in the underside so it dribbled, a little jb weld after a bit of cleaning and good as new. going on 4 years there abouts now.

[Guest leadfoot]

The thing that I've learned from experience with JB Weld and also Loctite used on brass fuel, oil, and vacuum connections is that they tend to separate from the metal surface after a couple of winters of freezing in the garage. I think that engine vibration also leads to this separation. So I've just replaced them on an as needed basis. Most of the JB Weld I've used to stabilize engine block inperfections around water jackets has held up more than five years.

[Guest strait8]

[color:"blue"] Used JB Weld on the resistance wire wrapped fiber strip in the fuel sending unit on my 39 Buick over 15 years ago ,still works fine despite being immersed in gas since I keep the tank full.The fiber strip broke crosswise in two at the mounting rivet hole so I cleaned all contacting surfaces,and used the weld under and over the break and rivet.They now have a weld for soft plastics like VOM cases that works great.

IIRC I immersed several different epoxy repairs for several days in gasoline and chose the one unaffected. <img src="http://forums.aaca.org/images/graemlins/smile.gif" alt="" />

[carbdoc]

J.R.,

I use Permatex Cold Weld (similar to JB Weld) on such things as metering well plugs (as discussed previously) and throttle shaft bushings in my carb shop. For actual carb casting repairs, I use a product called Sonic Weld and then paint over the side exposed to the fuel with a coat or two of Bill Hirsh Miracle Paint Clear (simalar to POR 15).

If the problem is with a gas tank, I recommend sending it to Gas Tank Renu.

Good luck.

[whtbaron]

I had a small rust hole ( a toothpick would plug it) in a small engine gas tank. I filled the hole with Seal-All, let it dry, and then applied the JB weld on top of that to keep the gas from contacting it. That was 2 yrs ago and so far it seems to be working.

[Guest stude8]

I would go to the Loctite site (http://www.loctite.com/int_henkel/loctite/entry.cfm) and they have an applications person that can advise on what of their products is useful for such repairs. Some years ago I had a job of repairing a cylinder block crack in a 1920 Mercer engine that they gave very helpful instructions that sealed the crack very well with a cleaning fluid, primer and then sealing compound (Designed for correcting casting porosity) that was heat and coolant resistant up to 250 degrees F. Worked well for years now. Stude8

[Guest Andynator]

James,

I used the standard JB-Weld package to repair a crack/leak between the filler tube and gas tank on my mother's '86 Caprice wagon and had no problems. The car was sold to a neighbor and hasn't leaked since I repaired it; back in the early 1990's.

I used powdered laundry detergent and water to make a thick paste and applied with a wire brush to scrub away road gunk before the repair.

Regards,

Andy