Jump to content
SAU Community

Recommended Posts

If I plan on NOT using the Variable cam timing,

do I still need to feed the VCT with oil?????? by means of external or the 'new' internal method i have read about......

In all the threads I have read they show ways to get oil to the VCT but no ones talked about if you are not using the VCT does it still need oil run to it or not?

I believe the oil being fed there may also lube that front cam journal?

Also i noticed that the large hole located near the Original VCT feed in the RB25 head is a different size/shape to the RB30E block. Does this matter? will it seal?

is anything done? which head gasket is used?

Thanks for you time!

Regards,

Andrew

Link to comment
https://www.sau.com.au/forums/topic/287907-oil-feed-needed/
Share on other sites

  • 1 month later...

headgasket suits the block,

everywhere i have read suggests that u need to still feed oil to the vct to keep the front cam journal lubed, i however did not supply any oil to the vct. i got some advice from a good drag mate of mine who has done 6 or 7 rb30det builds in many road and drag cars and none of them have had oil supplied there and he has not seen a drama yet.

as for the different shaped hole in the head, u do need to weld up the difference, or drill and tap the small hole in the head and insert a grub screw otherwise oil will mix with your coolant (not good)

Link to comment
https://www.sau.com.au/forums/topic/287907-oil-feed-needed/#findComment-4910800
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • It is an absolute lottery. They can and have died at stock boost with low usage at all. The turbos are now anywhere up to 36 years old!
    • Huh, wonder why it blew then. I never really beat on the car THAT hard lol I dailyed it and the turbo blew after 6 months
    • That's odd, it works fine here. Try loading it on a different device or browser? It's Jack Phillips JDM, a Skyline wrecker in Victoria. Not the cheapest, but I have found them helpful to find obscure parts in AU. https://jpjdm.com/shop/index.php
    • Yeah. I second all of the above. The only way to see that sort of voltage is if something is generating it as a side effect of being f**ked up. The other thing you could do would be to put a load onto that 30V terminal, something like a brakelamp globe. See if it pulls the voltage away comepletely or if some or all of it stays there while loaded. Will give you something of an idea about how much danger it could cause.
    • I would say, you've got one hell of an underlying issue there. You're saying, coils were fully unplugged, and the fuse to that circuit was unplugged, and you measured 30v? Either something is giving you some WILD EMI, and that's an induced voltage, OR something is managing to backfeed, AND that something has problems. It could be something like the ECU if it takes power from there, and also gets power from another source IF there's an internal issue in the ECU. The way to check would be pull that fuse, unplug the coils, and then probe the ECU pins. However it could be something else doing it. Additionally, if it is something wired in, and that something is pulsing, IE a PWM circuit and it's an inductive load and doesnt have proper flyback protection, that would also do it. A possibility would be if you have something like a PWM fuel pump, it might be giving flyback voltages (dangerous to stuff!). I'd put the circuit back into its "broken" state, confirm the weird voltage is back, and then one by one unplug devices until that voltage disappears. That's a quick way to find an associated device. Otherwise I'd need to look at the wiring diagrams, and then understand any electrical mods done.   But you really should not be seeing the above issue, and really, it's indicating something is failing, and possibly why the fuse blew to begin with.
×
×
  • Create New...