First off i know my brass fittings i work at fastenal we have them in stock

My question is where did you find a nut for the fitting this is my problem

A 1/2 in brass fitting is a pipe fitting it doesn't have a bolt pitch
the pitch on the fitting is a 6

and for the 7/16 fitting i dont know but lets solve the 1/2 in first

need more info reply back

 

Sorry....couldn't make sense of that. I tried, though.

 

I read this Mod and thought the same thing! You could make a nut from a coupler, one of the ones with the wrench lands in the middle. I'm wondering if the 7/16" fitting is actually a 1/4 NPT which would be about 7/16" on the outside of the threads. Just my thoughts.

 

7/16 is a non-standard pipe size so maybe you're referencing the size of the tubing? In which case the threaded part of fitting is likely 1/2 or 3/8.

1/2" pipe thread is 14 tpi, 3/8 pipe thread is 18 tpi.

 

what is a isr mod??

 

intake silencer removal
search is your friend.

 

haha yeah i just searched its only for 3rd gens tho right??

 

most is applicable to any 3vze as well

 

ok the coupler will probably be the best bet to rig up a nut

But i would like a reply from someone that has done this and see what they used

I thought all you True Yota fans already did the ISR mod and i need to catch up

 

i was under the impression that most if not all of the people who do that dont put a nut on the inside for fear of it falling off and getting sucked into the intake...

 

well how will the fitting stay air tight without a nut

 

I happened to get ahold of a 1/2" tap. Drill the hole a lil smaller and tap, then I installed it with teflon tape. As for the 1/2" tap, you may need to hit up a plumbing specialty store as you were saying, the thread's different for fittings and bolts. My pipe was stainless, btw, so it works in metal or pvc, whichever you're working with.

 

ok im gonna check that route and go to plumbers supply

see what kind of taps will work

why was this problem never talked about in the write up
it seems like a common question

 

This is why i gave up on finding all the fittings and crap, i just went to autozone, bought the "spectra intake" with the 45* bend and like 3 other pieces. It was $40 and it worked just fine, but i did need a longer coupler, so i got a 3x3'' lowes coupler.

 

N.P.T. pipe threads, like what's on the brass fittings, are tapered, being smaller at the end and wider nearer the fitting. They tend to be self-sealing since the threads are tapered. Teflon tape or 'pipe dope' is a decent addition to ensure the fitting does not leak.
One could go with PVC, CPVC or other plastic fittings and use pipe glue to seal the plastic fitting into the pipe as well. Be careful with the glue though, and only apply it on the last few threads that engage the pipe you're tapping into, otherwise you may glue it together too soon.
Additionally, if the pipe fitting is 1/2" (the threaded part), a lock-nut from a 1/2" electrical conduit coupler should fit as well as should a 3/8" electrical lock-nut fit onto 3/8" brass fittings.

 

i wish there was a "search pix" link

i remember reading a ton of info and pix on a thread here, but cannot locate it yet.