Epoxy/JB weld on fuel fittings?

[killab443]

Just tonight I tryed to install my aem fuel pressure regulator into my 1g 6bolt fwd. I want it to be a "bolt on" style similar to the on green preformance AFPR. So I went ahead and ordered all the fittings for it. I installed the -6 an rail fitting into the rail and screwed the regulator directly on it (FPR has -6an port). The problem that I have is even with the threads teflon tapped heavily the regulator is still loose on the threads. When the regulator is tighted complete to the fitting it is not facing up as it should. So My question is can I put jb weld on the fittings thread and install the fitting to the regulator?
The regulator fits fine with no clearance issues, the only problem Im having is its loose in the rail fittings and may leak once I start it up...

Edit: When I say epoxy I mean JB weld

Check out the pics if my words are too blurry.

 

[killab443]

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[TalonESIT]

There is no doubt they jb weld would work but it's not as advisable since that stuff is pretty solid once it dries. When I received my 8-injector intake manifold the fuel injector bungs were set with jb weld by Corbin, because welding would have been too difficult at that angle. I haven't had a problem with fuel leaking.

But I suggest trying jb weld as a last resort because if your filling to big of a gap with that stuff, since there is so much pressure, a simple pinhole could cause a small leak and your only left to add even more since it is pretty much stuck.

How far off is your fpr from being in a decent viewable position? Is there a way you could tighten or slighty back off of the rail fitting? Or even re-routing the gauge fittings?

hope this is of some help g'luck

 

[Defiant]

Gasoline dissolves JB Weld, eventually.

 

[killab443]

IF I tighten it up till the end, then loosen it, its loose enough to move back and forth. I tryed using a copper crush washer on the fitting to set the fpr off it less then 1 mm. It ended up putting the fpr on an even wierder angle. Im gunna buy the full crush washer kit today and try different combinations of sizes. Maybe I can get it where I want it

 

[TalonESIT]

It is true that jb weld will deteriorate eventually, but that eventually can be as long as 3-4 years+, speaking from experience. If your mixture is not good, then that greatly affects the life-cycle of the jb weld.

Just as you suggested, try some crush washers but make sure it doesn't interfere with that o-ring.

let us know how it goes...

 

[dieseltech]

It's kinda hard to see in the hole very well. I cannot see a seat for the fitting to seal against. Are you sure the FPR isn't pipe thread? I've dealt with AN fittings before and from what I delt with they all fit well and woun't describe them as sloppy. I'd double check the sizes.

 

[killab443]

The FPR is tapped for 6an ports. The return is 6an as well. 2 inlet ports are both 6an and the gauge port is 1/8 npt. The regulator doesnt have anything for the fitting's nipple/end to seat against which is why I'm having this problem. I am able to screw the fitting in all the way onto the regulator until its tight. But when I back it off its as loose as a hooker.

 

[GVR4592]

According to the JB Weld website it's safe for use with gasoline. I think that if it does eventual dissolve they need to say that on their website. I'm going to email them and see what their response is.

http://jbweld.net/faq.php#faq007

http://www.stevetek.com/R-FuelSys.html

People have been using this writeup for years, and it involves using Jb Weld on the fittings. Maybe somebody that has done this can comment on the status of their Jb Weld.

 

[killab443]

I just put the jb weld on the threads and installed the regulator to it... Im gunna give it a couple days to dry (vacation) and then Ill reinstall it. I will keep you guys updated. Thanks again for the info

 

[Mikael]

You generally don't want to ghetto rig your fuel system. You have some nice new parts, there, get the adapter you need and do it right.

 

[Mikael]

Guess i should have read the whole thing. Good luck.

 

[GVR4592]

I e-mailed JB Weld last night and they replied this morning. They said that once the Jb Weld is cured it's permanently impervious to gasoline.

 

[TalonESIT]

I e-mailed JB Weld last night and they replied this morning. They said that once the Jb Weld is cured it's permanently impervious to gasoline.

Great looking out!

 

[4SFED4]

I retap factory fuel rails to 3/8 pipe thread for cheaper and LARGER -6 or -8 fittings.
I never got a good seal even with teflon tape and always had seepage.
A small amount of JB weld on the threads solved the problem.
I have one rail in particular that I have been using for 5 years and no leaks.

 

[killab443]

I e-mailed JB Weld last night and they replied this morning. They said that once the Jb Weld is cured it's permanently impervious to gasoline.

Awesome! This is why you are a DSM Wiseman! Thanks A LOT, I had some doubts but they are cleared up now

 

[Defiant]

I e-mailed JB Weld last night and they replied this morning. They said that once the Jb Weld is cured it's permanently impervious to gasoline.

I wish I'd know that when it failed on the 510.