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Thread for oil feed for STS Turbo... NEED HELP NOW, PLEASE

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Old Sep 3, 2008 | 05:58 PM
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Default Thread for oil feed for STS Turbo... NEED HELP NOW, PLEASE

So, I'm working on my STS kit on my T/A.... But i dont have instructions..

I;m trying to find the thread size.. pitch... for the tap for the oil feed line thing...

If someone could just look at their instructions real quick and let me know...


I went to home depot and it doesnt seem to be anything they have so also where to find this tap...
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Old Sep 3, 2008 | 05:59 PM
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I know i didnt explain it well but i dont know what its called...


The piece im trying to tap is next to the oil filter.
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Old Sep 3, 2008 | 06:03 PM
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1/4" NPT pipe tap, you'll need a 21/64" drill bit.
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Old Sep 3, 2008 | 06:12 PM
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where do you buy pipe taps?
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Old Sep 3, 2008 | 06:23 PM
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Lowes is a good place to start. Any half descent hardware store should have them.
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Old Sep 3, 2008 | 07:45 PM
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Originally Posted by shawn_c992001
1/4" NPT pipe tap, you'll need a 21/64" drill bit.
Just a heads up when your drilling into the alum. adapter... drill slowly and use a little lube on the drill bit. Make sure you drill as straight as possible.

If your not carefull I have seen these adapters crack, drill offset, and too far!
Besides that use a good amt. of thread sealer and you'll be set!
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Old Sep 3, 2008 | 08:01 PM
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Also remember NPT threads are tapered, don't go running that tap all the way through or your threads will end up too big. Tap it a ways and try it, and go deeper with the tap as needed until the threads are the size you need.
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Old Sep 3, 2008 | 11:21 PM
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Thanks guys... Also i tried Home Depot and they didnt have it
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Old Sep 3, 2008 | 11:29 PM
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I'd look for a bolt store. They usually have all kinds of taps and dies.
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Old Sep 4, 2008 | 11:40 AM
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Actually that is a 1/8 NPT and you only need to drill though the bottom of hole so oil will flow though it. The top is close enought to 1/8 npt you can just tap it.
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Old Sep 5, 2008 | 06:36 PM
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Thanks for your help guys. I'm on my way to getting this donw now... but IKE is about to show me who's boss.
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Old Sep 5, 2008 | 07:13 PM
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Originally Posted by kbracing96
Actually that is a 1/8 NPT and you only need to drill though the bottom of hole so oil will flow though it. The top is close enought to 1/8 npt you can just tap it.
1/8" NPT is like a -2, thats not enough oil line. You should run at least 1/4" (-4 AN) for oil feed.
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Old Sep 5, 2008 | 08:27 PM
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Originally Posted by themachasy
1/8" NPT is like a -2, thats not enough oil line. You should run at least 1/4" (-4 AN) for oil feed.
The though I.D. 1/8npt to -4 fitting is right at 3/16 of an inch. The stock block off plate for the oil cooler on these motors taps perfectly to 1/8npt thread with out drilling. I've done many of these, I know what I'm talking about. -4 even -3 is plenty of oil line to the turbo, in fact many setup need a 1/16 restrictor put in the line to keep from over oiling the turbo.
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Old Sep 5, 2008 | 08:38 PM
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Originally Posted by kbracing96
The though I.D. 1/8npt to -4 fitting is right at 3/16 of an inch. The stock block off plate for the oil cooler on these motors taps perfectly to 1/8npt thread with out drilling. I've done many of these, I know what I'm talking about. -4 even -3 is plenty of oil line to the turbo, in fact many setup need a 1/16 restrictor put in the line to keep from over oiling the turbo.
Didn't know it was ID, sorry used to AN. BTW would you mind pming me a price on a master power T70? Thanks!
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Old Sep 5, 2008 | 09:08 PM
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Originally Posted by themachasy
Didn't know it was ID, sorry used to AN. BTW would you mind pming me a price on a master power T70? Thanks!
No problem

PM sent
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