Vct External Oil Feed

[PSI086]

Done a bit of searching but couldn't find an answer. Just wondering if you need to run a restrictor in the external vct oil feed on a 25/30? If so what size will it need to be? I've currently got it plumbed up with a -4 feed

[Ben C34]

I'm sure I've read it somewhere on here that guys weld the fitting then drill it out.

[Ben C34]

http://homepages.vodafone.co.nz/~lakewood/Skyline/R33_head.htm

[PSI086]

Cheers for the link. Looks like it needs a 1.4mm restrictor installed

[Gameboy]

I cant seem to find a 1.4mm restrictor on eBay. The closest one is 1.5mm. Would that be ok to use?

[PSI086]

Thats all I ended up doing with the car I was working on as we couldn't find a 1.4mm either

[SilverECR33]

I just used the -4 lines on the feed, and has provided enough restriction thus far..

[Fantm 34]

Hey i see it's an old feed, but I'm doing the 25/30 conversion ATM and with regards to the external line to feed vct my 25 block doesn't have a restrictor. So why are people restricting it? I have the neo head also

[PSI086]

The factory internal feed from the RB25 block is only 1.4mm

[Fantm 34]

Where is the restrictor?

[Ben C34]

I can't remember as it was a while ago but the neo has no restrictor as it has a different system of actuating the vct.

[Fantm 34]

Yea sweet, so obviously would that mean I don't have to restrict the external feed?

[Ben C34]

Yea sweet, so obviously would that mean I don't have to restrict the external feed?

With neo head no restrictor for vct is required.

[Blackkers]

With neo head no restrictor for vct is required.

good to know. I assume you just tap the external feed into the gallery above where you blocked it off under the head? are you running VCT on yours ben?

[Ben C34]

good to know. I assume you just tap the external feed into the gallery above where you blocked it off under the head? are you running VCT on yours ben?

Definitely running vct. You would be mental to not!

Tapping is basically the same as a non neo, like shown in the guide.

I got it welded a bit before drilling so there was more meat for the thread.

I put it in the same place as non neo, and used a 90 degree fitting. Space is tight but I think now that I could have put it in a better spot to not need the 90 degree fitting.

When you look at the head it's pretty obvious where the gallery is.

Remember it looks like there's lots of space untill you put the cam gear backing plate back on....

[Blackkers]

okay sweet, the tighter the better

[iruvyouskyrine]

I'm assembling my RB25/30 Neo today so I will throw up some pics of my external feed.

[Blackkers]

Awesome mate. That will be good to see. What sort of lines and fittings are you using and what size's?

[iruvyouskyrine]

Didn't get the engine assembled today due to unrelated issues, but here are the pics of what i have done for my external VCT oil feed.

Will chuck up more pics when it's all together

[iruvyouskyrine]

Sorry about them being on an angle, they won't rotate for some reason