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1/2" oil drain diameter.

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Old 10-04-2012, 11:26 AM
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Default 1/2" oil drain diameter.

Is it sufficient for a BB Garrett?
Old 10-04-2012, 11:50 AM
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Default Re: 1/2" oil drain diameter.

Yes, just make sure you have no kinks or 90 degree fittings.
Old 10-05-2012, 09:00 AM
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Default Re: 1/2" oil drain diameter.

Great. It will be a hard line, no kinks.
Old 10-05-2012, 11:12 AM
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Default Re: 1/2" oil drain diameter.

you'd be better off with 5/8" or -10 AN
Old 10-05-2012, 11:50 AM
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Default Re: 1/2" oil drain diameter.

I know that 10an would be better. The question was if the 8an was sufficient enough. I have 8an fittings, flanges and tubing already laying around.
Old 10-05-2012, 12:22 PM
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Default Re: 1/2" oil drain diameter.

If you have anything but a cast manifold skip the hard line. It will most likely fail prematurely.

Go with a braided -10an.

If there is any flex the AN flare will rip on a hard line. If its a tubular manifold it will flex. Cast you are all good. At least now I have an AN flare tool
Old 10-05-2012, 07:53 PM
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Default Re: 1/2" oil drain diameter.

Originally Posted by Ash J. Williams
I know that 10an would be better. The question was if the 8an was sufficient enough. I have 8an fittings, flanges and tubing already laying around.
lol, you know the proper size but come on and ask if you can use something smaller. sounds like you've already made up you're mind before posting

your question was vague anyways. can you define "sufficient enough"? yeah it will drain oil out of your turbo but how long until you come back on with a "why is my turbo smoking" thread. just run -10 like 99.9% of turbo honda's
Old 10-05-2012, 10:40 PM
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Default Re: 1/2" oil drain diameter.

Originally Posted by TKERacer619
If you have anything but a cast manifold skip the hard line. It will most likely fail prematurely.

Go with a braided -10an.

If there is any flex the AN flare will rip on a hard line. If its a tubular manifold it will flex. Cast you are all good. At least now I have an AN flare tool
it is a cast manifold (edelbrock).

Originally Posted by dpetro1
lol, you know the proper size but come on and ask if you can use something smaller. sounds like you've already made up you're mind before posting

your question was vague anyways. can you define "sufficient enough"? yeah it will drain oil out of your turbo but how long until you come back on with a "why is my turbo smoking" thread. just run -10 like 99.9% of turbo honda's
no, i don't know the "proper" size, but it doesn't take a genius to realise that a bigger diameter tube is superiour to the smaller diameter when relying on gravity for flow. my question was "is what i have laying around SUFFICIENT for proper operation?" the oil will either drain faster than the feed line supplies it, or it won't, it's not magic. i am sure there are people that have experience with both diameters to offer some insight. i'd rather not spend more money for marginal improvement.
Old 10-06-2012, 03:16 AM
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Default Re: 1/2" oil drain diameter.

Tubing is based on OD while hose is based on ID...
Old 10-06-2012, 07:49 AM
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Default Re: 1/2" oil drain diameter.

Originally Posted by N3va3vaSatisfi3d
Tubing is based on OD while hose is based on ID...
sure, i have .5 aluminium tubing and 8AN tube flares and nuts
Old 10-10-2012, 09:26 PM
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Default Re: 1/2" oil drain diameter.

Originally Posted by N3va3vaSatisfi3d
Tubing is based on OD while hose is based on ID...
i realised that you mean there is a discrepancy between the cross-section of a tube and a hose. but i believe the tubing i have is oversized to yield -8 ID diameter.
Old 10-11-2012, 03:07 AM
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Default Re: 1/2" oil drain diameter.

Honestly go bigger if u can its not worth the risk of smoking or whatever.

I've run that half inch on a sohc setup no smoke, but also tried it on a 2L vtec and it did smoke. I eventually changed to a 5/8 and it noticeably cut down on smoking
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