I am trying to make my current fuel pressure regulator into and adjustable one. and im using Vader's guide. and im trying to get the nut glued on the cap with JB weld cause thats all i have. i don't have the equipment to braze the nut on with brass or whatever it is u are supposed to use. (well i wont have the equipment for about another week until i go back to school). should i just say screw it and cover the hole with something temporary for now and fix it in a week? or is there a stronger glue i can use or another method? i have tried to use the jb weld twice. and the nut just comes straight out when i try to put the screw in.. any clues? or should i wait and braze the nut on?

 

Wait and braze a nut on. JB weld is more for sealling metal, not really good for pressure and or strength. I only use it for temporary fixes like a hole in a oil pan or trans pan. Quote the word..."temporary"

 

ya, i think im just going to use the JB weld to cover my current hole and wait a week.. thanks!

 

Jb weld is g0ds gift to automobiles

you must have pissed him off if the stuff doesn't hold

 

I've not read the mentioned article, I certainly hope it didn't mention using JB Weld.

I also wouldn't use it to "seal" my fuel regulator, you could become a topic in the Local Section of your newspaper.

 

This is like watching the old Coyote/Roadrunner cartoons. Instead of the coyote with a stick of dynamite glued to his hand, it's breathmint with a JBWeld kit and his FPR cap. You know what's going to happen, but it's still fun to watch.

 

What about using an epoxy directly made for sealing gas?


I don't see how he would have the problem if he used something like that.

 

its not gonna come into contact with any gas. even if the JB weld does come off its not gonna matter. im just gonna have a vaccum leak..

 

Breathe,

You sound surprised that JB Weld didn't hold. You shouldn't be surprised. You can braze,weld,or silver solder the nut in place, but not epoxy it. I don't think my instructions listed that as an option.

For now, you can insert a plain old US or Canada quarter (either heads or tails up) and a rubber washer or 'O' ring above it to seal the spring can against vacuum leaks. If you epoxy it closed, you'll only have to dig out the epoxy again.

 

well i guess i wasn't so surpised as i was pissed off. having to wait like 10 hours for that stuff to dry. and i know i shouldn't of taken a short cut. i jsut knew that i didn't want to wait until i got back to school to get it done, cause i forgot to do it before the christmas break.. the only thing i am worried about brazing the nut on there, is the amount of heat ill be getting using an O\A setup. and im not too good anyways with welding with that stuff. got any tips?

also i am already sealed up the hole with the JB weld. im not worried so much about rasing the pressure yet. and with the Flapper wheel on the dremel, it makes quick work at getting the JB weld off. i know cause i'v done it twice, takes just a few minutes.. thank you though for ur suggestions. and especialy for writting that tech article and suggesting it to me a whle back to go that route rather then spending the $80..:hail:

 

Just curious on why epoxy doesn't work?

it seems as though it should hold it fine.

 

I maybe wrong but, If I were to weld it on there I would first clean it as you already plan too. real well though because the thing will pop like fireworks at you with the jb on it at all. then the part I would do but, may not be recomended is put a some what long bolt through the nut you want welded on there. then start by heating up the nut then when it just starts getting fully red lower it down to the reg. because the reg. should get red hot almost instantly. then the rest should be easy. other wise I think the reg. will burn through right away.

 

Breathe,

I've done mine with an oxy/acetylene torch and a small tip. Concentrate the heat on the nut, not the spring can, then apply the bronze filler. The same could be done very cleanly with a TIG, but I would still clean off the factory powder coat before welding. IIRC, the article mentions using a spare bolt to hold the nut in place while brazing or welding, then chasing the thread with a tap if necessary.

 

ghetto braze it... 2 car batteries and a coat hanger and your good to go.

 

If you bring that over to my house today I can tig weld it at work Thursday night and get it back to you Friday.

I'll PM you my phone #.
Just say something when the answering machine picks up and I will be in and out all day.

 

Now THERE is a pal...

 

goto a welding shop and have them weld it on for a few bucks

 

Why I can tig weld as good as most tig welders and I can do it for free...

 

oh i didn't see your post from above

 

That's Ok and it was a good suggestion as most weld shops would do it for a few dollars.
I know breathment as we are in the NTTGA car club.