Oil feed line size

Discuss the RB20, RB25 and RB26 series engines.
ehacker01
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What size is suggested? I have a -3 from the KA-t I would like to use. Do I need a restrictor or is it already too small? What about tapping the oil inlet port on the turbo to m12x1.25? that way I wouldn't have to worry about the oil line and just use the stock one.

Also what are you guys doing for the water lines? Do you just cap them off or remove them and plug the holes at the block?


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rb240det
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I just welded the water hard lines shut and haven't had any problems.

ehacker01
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rb240det wrote:I just welded the water hard lines shut and haven't had any problems.
That's what I was planning. wither that or cutting the metal hose and looping them together with rubber hose.

As far as the oil line size, I just finished tapping the turbo for the m12x1.25 banjo bolt.

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Carl H
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im running a -4an feed line for my turbo, but the oil pressure was a bit high so i was forced to run another inline restrictor (gt30r has a built in restrictor).works but you may need to add a restrictor depending on oil pressure.....

skyline junky
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I just cut the metal line and connected them with rubber line, havent had any problems from it

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Carl H
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skyline junky wrote:I just cut the metal line and connected them with rubber line, havent had any problems from it
connected with a rubber line? arnt you afraid of the line blowing off at high revs where oil pressure is the greatest?on a side note you know my buddy andrew, he has a silver s13 hatch with a rb20 and steelies........

ehacker01
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Carl H wrote:connected with a rubber line? arnt you afraid of the line blowing off at high revs where oil pressure is the greatest?on a side note you know my buddy andrew, he has a silver s13 hatch with a rb20 and steelies........
I assume he was talking about the coolant lines.

skyline junky
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my fault, yes i was talking about coolant

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midnightsliding
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skyline junky, wuts up im from kernersville NC. i drive a camo 240sx right now, but im working on a Q45 now. we should meet up when i get back home around christmas. nice set up im intrested to learn more.

skyline junky
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yea man, weve met. i was kinda on the dl for a while. but have done another rb swap and working on the third lol,


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