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Turbo Coolant/Water Line Size

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Old 01-04-2014, 04:08 PM
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Default Turbo Coolant/Water Line Size

Had a google, found no answers!

When running water lines from here


What internal diameter hose should be used?

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Old 01-04-2014, 06:03 PM
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-3 for oil, -4 for water.
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Old 01-04-2014, 06:18 PM
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-4 being 4/16ths being 1/4"?
Sorry, I'm from England!
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Old 01-04-2014, 06:19 PM
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I was using AN sizing
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Old 01-04-2014, 07:02 PM
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AN sizing only references the OD though yeah? When really I'm asking for the ID of the hose or the OD of the nipples on the car...
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Old 01-04-2014, 07:31 PM
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I think -4 is 5/16", -3 is 1/4"...that's off the top of my head. I'm positive -6 is 3/8" so I just scaled down. I custom did my lines in all braided with no barbed fittings, so I can only compare.
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Old 01-04-2014, 07:50 PM
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I used 1/4" ID.
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Old 01-04-2014, 08:53 PM
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1/16' = -1AN, so -4 is 1/4", -6 is 3/8", -8 is 1/2", etc. All the way up to -20AN which is 1 1/4".

I've typically used -6AN for water lines, but that's only because M14x1.5 to -4AN fittings can be hard to find. -4AN or -6AN is fine.
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Old 01-05-2014, 10:02 AM
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Mick,

In my experience hose with an 8mm internal diameter is a good fit. I use steel braided hose with crimped banjo connectors on one end and and hose clamps on the other.

Attached Thumbnails Turbo Coolant/Water Line Size-p1050052_zps3b0566ab.jpg  
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Old 01-05-2014, 10:07 AM
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Hmmm I never even thought about what size my lines were... I got Artech's SS oil/water lines. Anyone know off hand what size these are?

Attached Thumbnails Turbo Coolant/Water Line Size-20131002_163639_zps47426214.jpg  
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