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Oil Restrictors --- Pics

Fastrotor

By Fastrotor,
in Forced Induction Performance

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Fastrotor Proficient

Fastrotor

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Ok experts....... got a weird one.........

Just to be prudent before i machine up some bungs, i though id measure the little bores to make sure mine was 6mm, as i take nothing for gospel , espeially when its a 1min job.

Now 6mm is fine, but then i though, as i did initially, the restrictors look small.....

In The RB oil thread only ONE guy mentions this ....... i found ALL 3 of my restrictors are about 1.3 mm .........

No one replied to him....... so im not sure if its std or not .....

Im just worried the VCT isnt getting enough...

Gary

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Fastrotor Proficient

Fastrotor

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So what is the consensus on the stock RB25DET S1 oil restrictor size ?? I mean everyone just seems to assume and go on what they have heard..... who has measured ??

..... Specifically for me, what is the std VCT oil restrictor size. ??? I guess i could still block the middle off and leave the rear 1.3mm restrictor. But i am concerned the VCT is too small....

And also just keen to know if S1 std is not the same as what i have,.... which would throw another spanner in the works. !

Gary

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r33_racer Grand Master

r33_racer

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lucky i have a spare s1 block at work.

I measured the hole size and I got about 1.3ish too. Across the board. Answer is (as i would do it), leave the vct std, machine up one bung to block off one feed and machine up another bung with the 1.2mm hole, or is it 1.0mm? Been a while...Std pump, id go 1.2mm, anything aftermarket 1.0mm. And that is all from experience :thumbsup:

Edited by r33_racer
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Fastrotor Proficient

Fastrotor

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thanks Michael,

I'll just block off the middle one. For the sake of .1mm im not going to touch the rear one... plus in SK's oil restrictor guide, he reccomends std vct, block middle and 1.5mm rear ..... so its already below that.

And in combo with the rear oil drain, should be well and truly fine.

Gary

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