Shaved620 Posted February 14, 2014 Report Share Posted February 14, 2014 I have a 1974 620 with dual DCOE 40 webers. I was tightening one to the manifold on the bottom nut and my wrench slipped and put a pin hole chip in the bottom of the carb. Now I have gas leaking out. I was wondering if I could JB weld it for a quick fix, if I can tac it with an aluminum welder, or am I just screwed all together? Quote Link to comment
metalmonkey47 Posted February 14, 2014 Report Share Posted February 14, 2014 JB isn't designed for fuel. It will break down. You might try and find some gas tank epoxy. They do make the stuff and most parts stores have it. Quote Link to comment
maltese Posted February 15, 2014 Report Share Posted February 15, 2014 JB Weld has a product called Water Weld, that works with fuel. May give that a try. Quote Link to comment
TENDRIL Posted February 15, 2014 Report Share Posted February 15, 2014 tap a lead plug into the hole with jb weld over it. Quote Link to comment
TENDRIL Posted February 15, 2014 Report Share Posted February 15, 2014 can you get a pic up? Quote Link to comment
Shaved620 Posted February 15, 2014 Author Report Share Posted February 15, 2014 Thanks I will try and get a pic up shortly Quote Link to comment
Shaved620 Posted February 15, 2014 Author Report Share Posted February 15, 2014 DCOE 40 by jonnyd503, on Flickr DCOE 40 by jonnyd503, on Flickr DCOE 40 by jonnyd503, on Flickr You can see the crack or hole next to the right bolt in the first pic and top right bolt on the second two pics. Quote Link to comment
smoke Posted February 16, 2014 Report Share Posted February 16, 2014 Ouch. I'm with the gas tank repair epoxy. I have used it before (on a tank) and it worked really good. Get it as clean as you can, rough it up a little epoxy it and you should be okay. However, I am a bit concerned with the crack spreading over time, so you need to keep a close eye on it. Quote Link to comment
Shaved620 Posted February 16, 2014 Author Report Share Posted February 16, 2014 Ok thanks I will try that and see how it works. Quote Link to comment
ggzilla Posted February 17, 2014 Report Share Posted February 17, 2014 Lock washers and nylock nuts both are overkill. And the nuts do not take much torque to seal. Maybe 15 ft lb max. What kind of lock washers are those? Quote Link to comment
Shaved620 Posted February 17, 2014 Author Report Share Posted February 17, 2014 I don' know for sure I didn't install them. I did tighten them up a bit because there was a gap between the rubber spacer/gasket and the manifold. I couldn't fit a torque wrench in there to make sure how tight they were. Quote Link to comment
Guest Rick-rat Posted February 17, 2014 Report Share Posted February 17, 2014 I would just go with flat washers if you are going to use nylocks Quote Link to comment
maltese Posted February 17, 2014 Report Share Posted February 17, 2014 Those are spring washers. Not supposed to be tightened all the way down, if using insulators. 1 Quote Link to comment
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