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what size of oil lines

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Old Jan 12, 2005 | 12:36 PM
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Default what size of oil lines

What size of -AN line do i need for the feed and drain for my T3/T4 twin turbo setup?
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Old Jan 12, 2005 | 01:45 PM
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3 or 4 an for feed, 10 an or bigger for drain
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Old Jan 12, 2005 | 04:50 PM
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T3s use a 1/8"NPT oil feed, T4/T04s use a 1/4"NPT.

http://www.atpturbo.com/Merchant2/me...egory_Code=OIL
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Old Jan 12, 2005 | 04:52 PM
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Fullthrottledan1
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do you think a -4 is too much oil? how do i know if im getting too much? one of my turbos looks like a little bit of oil is coming out the exhaust(open turbos right now). the turbos are new t4's but have been sitting in my room for a year. should i just rebuild it?
sorry for the hijack,
dan
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Old Jan 13, 2005 | 06:24 AM
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how much oil.
id talk to the manufacture to gauge what is normal.
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Old Jan 13, 2005 | 12:48 PM
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just a little dribble, not even enough to spray out. the other turbo did it for the first minute or 2 they were running, but its dry now, and the other turbo just started leaking, butthe truck hasnt ran for more than 5 minutes with the new motor yet.
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Old Jan 13, 2005 | 12:54 PM
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Are the drains still angled like they are in your picture?

They should be a MAX of 30° from straight down, preferrably less. Even with a restriced supply, a clocked drain will cause them to leak past the seals.

-4 is fine on the feed, most turbos will internally limit the supply anyway. But if you have one without an internal orifice, you might need a flow restrictor. They only really need a few GPM of flow, and maybe 60 psi of feed pressure. Ball bearing need even less.
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