My methanol injection setup is running like a champ with one exception, it is leaking from where I have it hooked into my elbow. What are you guys using to mount the nozzle? I Telflon taped, and liquid tefloned the nozzle after screwing it in, but it keeps blowing out.

 

would make it permanent but you could try some J-B Weld or other epoxy. might also try some permatex first as it sets up harder than the teflon will.

 

Loctite non hardening thread sealer, no problems.

 

The problem with JB weld, or to a lesser extent, Lock tite, is that it will make it permanent. Technically I shouldn't have to remove the nozzle anyway since the methanol with pretty much self clean the nozzle. But I'd like to keep it removable just in case for whatever reason I would need to remove the nozzle.

I also thought about a rubber gromet, but thought the methanol would slowly deteriorate it.

Any other ideas of how to successfully plum this so it seals up, but it lets me remove the methanol nozzle?

 

how is it held in right now?

 

A hole was basically drilled just larger than the nozzle. The elbow thickness isn't really that thick so it was hard to tap threads into it, although that was done as well. I teflon taped the threads, and noticed it spraying a little out of the plumbed part while it was on the dyno. I sealed it up with some liquid teflon around the outside, but it doesn't seem like the liquid teflon is ever going to dry .

I had thought about taking it back apart and just going to a hardware store and looking in the plumbing section to look for different ideas that would seal it up better while still making it able to remove the methanol nozzle.

Any ideas?

 

I guess ideally a welded bong like for your 02 sensors would be ideal. But would like to take care of this issue easier than that.

 

I HATE that liquid teflon stuff, it NEVER sets up and always gets all over everything.

is there enough thread inside the elbow to allow you to put a thin nut on the inside?

 

I agree, the right way to do it would be to weld a small piece of aluminum stock where the hole is now and then drill and tap it to accomadate the nozzle. Sort of a time consuming fix, but definately one of the right ways of fixing it. Another possibility would be if you have enough threads on the inside of the elbow, to thread a jam nut on the inside, but you would want to make sure that thing is good and secure as you wouldn't want it coming loose!

 

The thickness of the elbow is pretty thin as mentioned earlier. I doubt I have more than 1-2 threads in it. I can't really mod it from the inside, so a washer or a setup that requires anything internally is pretty much out of the question, as the last thing I want to do is interupt the flow of the methanol from the nozzle.

Perhaps I will go to Lowes, or a hardware store and look for something I can tap on the outside of the elbow and JB weld the tap to the elbow that will seal up better on the outside.

Any other ideas are welcome.

 

could always get a jam nut that matches the threads and jb weld that to the outside. would allow you to screw the nozzle in. however if you're going to do that, would be better off doing the previously mentioned welding a bung on

 

Don't use a nut on the inside unless you want to risk it going into the engine. Locktite 272 - hi temp - hi strength or maybe 545 hydraulic sealer like Lisa suggested, otherwise weld it. Everybody should have a bottle of 545 in their toolbox - that stuff is liquid gold whan it comes to thread sealing. I've been using it 15+ years professionally, and I've even recommended it to Journeyman pipefitters who were amazed how well that stuff works. If the threaded joint is weak, then use the 272 or something similar.

 

Don't use a nut on the inside unless you want to risk it going into the engine. Locktite 272 - hi temp - hi strength or maybe 545 hydraulic sealer like Lisa suggested, otherwise weld it. Everybody should have a bottle of 545 in their toolbox - that stuff is liquid gold whan it comes to thread sealing. I've been using it 15+ years professionally, and I've even recommended it to Journeyman pipefitters who were amazed how well that stuff works. If the threaded joint is weak, then use the 272 or something similar.

 

Again, I don't want to do anything permanent here. Do you think I could break the Locktite free if I needed to? If so, I might consider this, otherwise, I still need to come up with something to seal it up while still having the option of removing the nozzle if needed.

 

Ben-

Go to a Hobby Lobby or Michaels craft store and get some Goop E6000. It's methanol resistant and dries hard. You can still remove it if need be. That's what snow recommends to use. All that teflon sealant and even Loctite are not methanol resistant, and will leak.