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Old 05-15-2018, 02:32 AM   #1
dokalanyi
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Default No Tap. Can I drill and force nozzle in?

Hello,
I have an STI intercooler. Would like to install meth, don't have 1/8" tap. Can I drill the right size hole, and just force in the nozzle? Will it create its own threads?
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Old 05-15-2018, 03:30 AM   #2
combatspace
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It's gonna be a lot easier just to take it to someone who can tap it properly for you than to try and force it. See if there's a machine shop around you that can do it. Toss em a few bucks. Besides, you'll get all those metal bits down inside the IC which is no bueno...
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Old 05-15-2018, 10:51 AM   #3
Titter
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buy a tap set. they are like $40
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Old 05-15-2018, 05:35 PM   #4
stevieturbo
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A single tap would be a fraction of that.
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Old 05-16-2018, 05:43 AM   #5
dokalanyi
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Would have to wait atleast 2 weeks to get the correct tap. I'm not in the US. I guess that's going to be my only alternative
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Old 05-16-2018, 06:21 AM   #6
stevieturbo
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I'm sure there are local suppliers of such parts in most places in the world ?

You could of course try and force it in....but if in doing so you mess it up and end up with a damaged jet and hole that is too large....you've just created more problems that will be harder to rectify.
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Old 05-16-2018, 03:32 PM   #7
pcampbell
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buy a tap and the correct size drill bit for the tap. as mentioned, be careful of metal shavings... don't want that in your engine.

if you force it, it's going to leak.
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Old 05-16-2018, 05:04 PM   #8
dokalanyi
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I decided to risk it. It was a PITA. But looks very snug. Looks unlikely to leak. All my tools were the wrong sizes. Including the drill bits. I guess it's Metric Vs Imperial. I actually couldn't find a local 1/8" NPT tap. In fact, no NPT taps at all. There were some BSPT though
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Old 05-16-2018, 05:55 PM   #9
stevieturbo
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BSPT is almost identical and would be fine to use.
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Old 05-17-2018, 07:53 PM   #10
kellygnsd
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How much boost are you running? Be sure and report back when it fails.

Quote:
Originally Posted by dokalanyi View Post
I decided to risk it. It was a PITA. But looks very snug. Looks unlikely to leak. All my tools were the wrong sizes. Including the drill bits. I guess it's Metric Vs Imperial. I actually couldn't find a local 1/8" NPT tap. In fact, no NPT taps at all. There were some BSPT though
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Old 05-21-2018, 03:48 AM   #11
dokalanyi
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I'm running 18psi. Will report back when it fails.
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Old 06-18-2018, 07:04 PM   #12
pcampbell
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Default No Tap. Can I drill and force nozzle in?

Quote:
Originally Posted by dokalanyi View Post
I'm running 18psi. Will report back when it fails.


You can try e6000 glue in the hole to seal it up. It is what the manufacturers call for.

Last edited by pcampbell; 06-19-2018 at 09:07 AM.
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