Hks 2530 Oil Restrictor

[Kwyjibo]

Hi,

I have purchased a second hand HKS 2530 for my RB20 with some lines, however the oil line appears to be from standard and doesn't fit the smaller thread of the turbo oil feed(coolant lines fit). I need to get a new line made up, what size restrictor would people recommend to put in this line. I'm unsure if the HKS already has a restrictor in it. I don't want to starve the turbo of oil but I don't want to break any of the seals by getting to much oil in there.

Any help would be greatly appreciated.

Cheers,

Adrian

[The Dan]

The restrictor is already there.

And it doesn't break the seals, it only makes the oil get past them. So just run the line to the turbo...if it gets a bit smokey, then you need to put another restrictor in. HKS assumes that you retain the 2mm factory restrictor when they do this though, so you need to make sure you have that one on the block side also.

[Kwyjibo]

Thanks for that.

Is the restrictor in the block itself or on the line attached too the block?

Cheers,

Adrian

[MUNDA]

The restrictor is in the turbo.

[The Dan]

Thanks for that.

Is the restrictor in the block itself or on the line attached too the block?

Cheers,

Adrian

Both.

The factory RB20 oil feed has approx. 2mm restrictor in the banjo fitting on the block end.

The turbo also has one. The restrictor in the in the turbo is less than 1mm so the only purpose the one in the banjo fitting serves is to slow the oil down before it gets to the turbo. The factory turbo is journal bearing in the series 1 and ball bearing in the series 2 and 3 so the restrictor is there for the factory turbo setup. You can leave it there or take it away, it does not matter. The one in the turbo is all that matters and Garrett put them in all of the GT range of turbos in an appropriate size.