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http://www.skylinesaustralia.com/forums/topic/251669-rb2530-rb30det-vvt-internal-oil-control/

its way too easy to not do just for the sake of laziness. peak hp doesnt change at all without vct but you lose torque below 4500 rpm, something RB's need every bit of. for 5 mins of stuffing around its definately worth it

couldn't be bothered doing the extra work haha & you only lose acouple hp with out so i've been told...

got any links for the threads anyone?

http://www.skylinesaustralia.com/forums/topic/251669-rb2530-rb30det-vvt-internal-oil-control/

hey people i'm doing this conversion my self & noticed on the rb25det there are an extra line from the head running to the block. what could these be used for? & what do i do with it as the rb30 block doesn't have a tapped hole on the block to fit it...

here's a pic of the rb25det block with the line>>

DSC03811.jpg

& here's the rb30 block that doesn't have a tapped hole to fit the line>>

DSC03814.jpg

couldn't be bothered doing the extra work haha & you only lose acouple hp with out so i've been told...

got any links for the threads anyone?

If you have ever driven an rb25 without it you will know it is definitely worth keeping. Up to 10-15kw in the midrange on low throttle conditions.

alright i've worked out that line is the oil drain...

in that info guide it says (The Yellow highlight towards the rear of the block is the water return.

Water feed is provided from a hose/steel pipe assembly that feeds from the opposite side of the block) MY rb25 block has this blocked off do i run a water line from the other side somewhere?

  • 1 month later...

Hi everyone I'm slowly building up my 30 was wonderingwat computer will run a rb25/30 will a normal r33 apexi power fc work or do I need the pro version first time I've mucked around with computers thanks guys

it doesnt work without an oil feed. the solenoid simply feeds oil into a section of the cam which causes it to advance 20 degrees, no oil feed means no vct

Well mine does, and so do a few others I know of - has been checked by three workshops and an engine builder.

But I'm not going to argue with you about it (moreso the fact I don't fully understand why it is working, but it was the engine builder who did the modification without the feed knowing that it would still work).

Edited by cactus

There is a thread on how to supply the vct with oil internally instead of with an outside line:

http://www.skylinesaustralia.com/forums/topic/251669-rb2530-rb30det-vvt-internal-oil-control/

  • 4 weeks later...

Can anyone tell me if there are any fouling issues with the RB30 sump into a R34. The guide says that with the 32's and 33's it's fine but nothing about 34's. I won't need to drop the engine any lower either as I'm not running the standard plenum.

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