Jump to content
SAU Community

Recommended Posts

Hey guys,

Hoping someone can help me out or point me in the right direction.

I've recently picked up a GT-RS turbo for an rb25det, however it hasn't come with any lines or oil drain.

My question is can anyone tell me what size oil drain is required, or steer me in the direction of where to pick one up? I have done some searching and haven't been able to find any information on this.

Secondly, the oil feed, again I have searched but I still can't find a clear answer - some people say this turbo requires an oil restrictor and others say it is already built in.

Can anyone with this particular kit tell me the specifications of the original oil feed (and oil drain as well) so I can match these? Or if someone that has installed this kit and used an oil feed other than that which is included in the kit what they have used?

Cheers and thanks in advance!

Frank

Link to comment
https://www.sau.com.au/forums/topic/369336-hks-gt-rs-oil-line-specs/
Share on other sites

Thanks Wolverine, I've sent him a message!

Would anyone else happen to know any info about the lines?

On my rb26/30 build I sourced my braided lines from kando dynamics, ebay seller. Great lines, great price, turned up quick and worked well. He had every conceivable combo for rb26's so probably carries stock for popular rb25 conversions.

Dunno about the gtr-s but my 2835 has the restrictors built in, I guess they would be the same.

I reused the speedlow fitting that hypergear gave me with my highflow for the oil feed so I didn't have to use the dodgy looking right angle joiner that attatches to the banjo.

Thanks for the reply guys, I don't think the drain will be too much of a problem now, I've gotten some very help info from discopotato03 to clear this up - thanks mate much appreciated.

The only thing I'm concerned about is the oil feed, too much oil and you'll blow oil through the seals and too little will starve the turbo and seize it.

To confirm if there is a restrictor built in the oil feed port, it should look like this yeh?

post-54158-0-91593400-1309354563_thumb.jpg

Yes that inverted flare should have the correct sized hole through it .

Its actually a mushroom shaped device that fits into the oil hole in the actual bearing cartridge ande locates it in the turbos center housing .

A .

Thanks again mate, from what i have picked up along the way in the inverted flair there is a .5mm hole which does the restriction?

With this and the oil drain sorted, all I have to do is the water lines which shouldn't be a drama.

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

    • I guess one thing that might be wrong is the manifold pressure.  It is a constant -5.9 and never moves even under 100% throttle and load.  I would expect it to atleast go to 0 correct?  It's doing this with the OEM MAP as well as the ECU vacuum sensor. When trying to tune the base map under load the crosshairs only climb vertically with RPM, but always in the -5.9 column.
    • AHHHH gotchaa, I'll do that once I am home again. I tried doing the harness with the multimeter but it seems the car needed a jump, there was no power when it was in the "ON" position. Not sure if I should use car battery jump starter or if its because the stuff that has been disconnect the car just does send power.
    • As far as I can tell I have everything properly set in the Haltech software for engine size, injector data, all sensors seem to be reporting proper numbers.  If I change any injector details it doesnt run right.    Changing the base map is having the biggest change in response, im not sure how people are saying it doesnt really matter.  I'm guessing under normal conditions the ECU is able to self adjust and keep everything smooth.   Right now my best performance is happening by lowering the base map just enough to where the ECU us doing short term cut of about 45% to reach the target Lambda of 14.7.  That way when I start putting load on it still has high enough fuel map to not be so lean.  After 2500 rpm I raised the base map to what would be really rich at no load, but still helps with the lean spots on load.  I figure I don't have much reason to be above 2500rpm with no load.  When watching other videos it seems their target is reached much faster than mine.  Mine takes forever to adjust and reach the target. My next few days will be spent making sure timing is good, it was running fine before doing the ECU and DBW swap, but want to verify.  I'll also probably swap in the new injectors I bought as well as a walbro 255 pump.  
    • It would be different if the sealant hadn't started to peel up with gaps in the glue about ~6cm and bigger in some areas. I would much prefer not having to do the work take them off the car . However, the filler the owner put in the roof rack mount cavities has shrunk and begun to crack on the rail delete panels. I cant trust that to hold off moisture ingress especially where I live. Not only that but I have faded paint on as well as on either side of these panels, so they would need to come off to give the roofline a proper respray. My goal is to get in there and put a healthy amount of epoxy instead of panel filler/bog and potentially skin with carbon fiber. I have 2 spare rolls from an old motorcycle fairing project from a few years back and I think it'd be a nice touch on a black stag.  I've seen some threads where people replace their roof rack delete with a welded in sheet metal part. But has anyone re-worked the roof rails themselves? It seems like there is a lot of volume there to add in some threads and maybe a keyway for a quick(er) release roof rack system. Not afraid to mill something out if I have to. It would be cool to have a cross bar only setup. That way I can keep the sleek roofline that would accept a couple bolts to gain back that extra utility  3D print some snazzy covers to hide the threaded section to be thorough and keep things covered when not using the rack. 
    • Probably not. A workshop grade scantool is my go to for proper Consult interrogation. Any workshop grade tool should do it. Just go to a workshop.
×
×
  • Create New...