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I'm in the final stages of my oil system and wanted peoples advice/ideas

Ill be running an external single stage pump

Sump is going to be a custom alloy baffled and high volume setup that iv designed myself it will have fittings for oil pump, catch can breather, front oil return from head, rear oil return from head

Vct will be blocked off with 1.2 restrictors in the block and drilled out returns in the block

Oil cooler is currently set up from factory oil filter but that was where I was going to put the line for the oil pump is that the best place to put it?

engine is a rb25/30

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I'm going to have a mesh cage kind of thing around the pickup pipe and a micron filter in the fitting and iv got a filter relocation kit in the cooler line would that be enough?

I'm mostly worried about the best place to plumb the oil back into the motor from the pump at the moment

Not sure if this really is an issue or not, as it's not my first hand knowledge, but when talking to my machinist when welding up my vct feed, he mentioned pre neo rb25s use that feed to lube the front cam bearing and that he has seen a bearing destroyed as a result of just blocking up the feed. (neo head vct is different) If you look at this thread http://www.skylinesaustralia.com/forums/topic/251669-rb2530-rb30det-vvt-internal-oil-control/ the photos half way down show what I am talking about.

I was planing on just welding the port on the bitten of the head were the oil exits and grub screwing the solenoid hole from what I understand the cam bearings will still get oil from the head it just won't be able to get out the bottom if that makes sense

Well if it was me I would be checking tht after you weld it it does actually get oil supplied to the front bearing, easy to do with some compressed air. An easy check to prevent a serious problem, and if it doesnt get lube drill out the plug like in the thread, easy fixed!

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