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16G compressor outlet boost source fitting?

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UofACATS

20+ Year Contributor
707
18
May 11, 2004
Tucson, Arizona
Where can I get a barbed fitting for this tapped boost-source in the evo3 16G?

Here's a picture of what I'm talking about. Thanks!

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Here's mine:

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Well i got mine at menards for vacumm i dont remember seeing a fitting on my evo, no there isnt one is it a real mhi or ebay, because any smaller is useless, if you look on boost source taps you will see lots of fittings on j pipes like mine.
 
Have you gone to ace? They have tons of barb fittings.

Yes that's the first place I thought of. The smallest fitting they have is twice as big as it needs to be. The Ace guy told me they don't exist
 
Well i got mine at menards for vacumm i dont remember seeing a fitting on my evo, no there isnt one is it a real mhi or ebay, because any smaller is useless, if you look on boost source taps you will see lots of fittings on j pipes like mine.

My car does not have a J-pipe. This is a real evo3 turbo, and I'd like to use this pre-tapped boost source if possible.
 
Its not a source spot its where the turbo coolant line feeds the turbo off the water pipe that goes to the water pump.
 
Yep not a boost source unless you drill out, which may be a challege without messing the threads up. I think you would have better luck adding the boost source to your j pipe. Just drill and tap and then buy a fitting that matches the taps threads.

http://www.summitracing.com Has tons of fittings, but you need to know the correct size.
 
Its not a source spot its where the turbo coolant line feeds the turbo off the water pipe that goes to the water pump.

What he said^^^.

You guys need to stop posting and look at the first post. There's two pictures there and they both show a tapped boost source that is directly under the outlet flange. See how they're both right next to the compressor outlet bolt??

:aha:

I know the difference between the coolant feed line and a boost source on the compressor outlet. They are quite different. Please don't tell me to feed coolant into my compressor outlet. The evo3 16G has modified waterlines to fit on my 2G, as seen in my avatar.



you can actually just drill a hole and thread the new fitting in and that way you can convert it to a boost source. Thats what the guy in the picture did.

Right. That's exactly right, and it's what I'm trying to accomplish. Although I need a question answered first, and that's what this thread is about.

Yep not a boost source unless you drill out, which may be a challenge without messing the threads up. I think you would have better luck adding the boost source to your j pipe. Just drill and tap and then buy a fitting that matches the taps threads.

Right, it's obvious that it's not drilled all the way through. I do have a drill bit that's small enough to do the job though, and I'm able to drill straight (enough) to not mess up the threads. I don't have a J-pipe.

I'd like to use this one if possible since the drilling and tapping is already done, and I like clean installs. Thanks.
 
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Thanks U of Cats! You can buy the fitting at Nuts and Bolts (True Value) in the plumbing section 1/8 pipe barb fitting.
 
You guys need to stop posting and look at the first post. There's two pictures there and they both show a tapped boost source that is directly under the outlet flange. See how they're both right next to the compressor outlet bolt??

:aha:

I know the difference between the coolant feed line and a boost source on the compressor outlet. They are quite different. Please don't tell me to feed coolant into my compressor outlet. The evo3 16G has modified waterlines to fit on my 2G, as seen in my avatar.





Right. That's exactly right, and it's what I'm trying to accomplish. Although I need a question answered first, and that's what this thread is about.



Right, it's obvious that it's not drilled all the way through. I do have a drill bit that's small enough to do the job though, and I'm able to drill straight (enough) to not mess up the threads. I don't have a J-pipe.

I'd like to use this one if possible since the drilling and tapping is already done, and I like clean installs. Thanks.

None of the td05h, bolt on j-pipe compressor covers come with a tapped boost source. That is where the coolant line mounts. When i told you to get a fitting from ace i didn't know your were trying to screw it into that hole. You need to drill and tap a hole into the cover. It would be much easier to do in another location on the cover, where the material is thinner.
 
That hole is threaded for the 6mm x 1.0 x 16mm bolt which holds the tab for the coolant line that goes to the rear of the center housing. Even if you drill through that hole so it sees boost pressure from the compressor cover, you'll never find a barbed nipple with a 6mm x 1.0 thread.

The smallest nipple you'll find is a 1/8"NPT x 3/16" barbed nipple, so the hole will need to be drilled and tapped for 1/8"NPT. I've done this numerous times to customer turbos per their request.
 
That is where the coolant line mounts.

Thanks for explaining the coolant line thing a bit better. I think I've misunderstood the above postings.


That hole is threaded for the 6mm x 1.0 x 16mm bolt which holds the tab for the coolant line that goes to the rear of the center housing. Even if you drill through that hole so it sees boost pressure from the compressor cover, you'll never find a barbed nipple with a 6mm x 1.0 thread.

The smallest nipple you'll find is a 1/8"NPT x 3/16" barbed nipple, so the hole will need to be drilled and tapped for 1/8"NPT. I've done this numerous times to customer turbos per their request.

Exactly the information I was looking for. Thank you very much! :thumb:


EDIT:
I did this modification today and put together a tech article under

Articles: Turbo System & Intercooler


I'll edit this post, linking to it if the article is approved by a moderator.
 
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I did this about a year ago to my 16g and its worked great! I just took the compressor cover off, drilled a 1/4 hole through that spot and tapped some new threads in it. Bought the nipple from a Kragen Auto Parts store, and with some teflon tape just screwed it in. Works like a champ, no boost leaks! Interested to see your tech article!!
 
I did this about a year ago to my 16g and its worked great! I just took the compressor cover off, drilled a 1/4 hole through that spot and tapped some new threads in it. Bought the nipple from a Kragen Auto Parts store, and with some teflon tape just screwed it in. Works like a champ, no boost leaks! Interested to see your tech article!!

Well that's a better idea than what I did :)

I'm happy to hear you have no boost leaks. Mine might have to be pulled and re-sealed at some point, I imagine.



Edit: Tech Article

http://www.dsmtuners.com/forums/art...boost-source-16g-turbo-compressor-outlet.html
 
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Well that's a better idea than what I did :)

I'm happy to hear you have no boost leaks. Mine might have to be pulled and re-sealed at some point, I imagine.


I was worried if I just shoved a rag in the outlet that some shavings from the housing would still get into the wheel and possibly damage something. Seemed to be the most benificial way!! :thumb:
 
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