Jump to content
SAU Community

Turbo oil feed restrictor size, stock vs hybrid turbo

ossy

By ossy,
in R Series (R30, R31, R32, R33, R34)

 Share

Recommended Posts

ossy Enthusiast

ossy

Posted
Posted (edited)

I had a turbo conversion done a while back on my R33 RB25DE and runs perfect but I've got blue smoking issues and believe my turbo seals have gone.

 

I've got braided lines and suspect the restrictor banjo bolt for the oil feed is wrong. I've now brought a rb25 hybrid turbo in good condition to replace mine but unsure what sized restrictor and bolts to use.

 

What size is the oil feed restrictor for the original turbo?

Also what sized restrictor would I need to use for the new hybrid turbo?

And am I correct in saying the coolant feeds and oil drain are unrestricted?

 

Thanks.

Edited by ossy
Murray_Calavera Mentor

Murray_Calavera

Posted
Posted
14 hours ago, ossy said:

I had a turbo conversion done a while back on my R33 RB25DE and runs perfect but I've got blue smoking issues and believe my turbo seals have gone.

 

I've got braided lines and suspect the restrictor banjo bolt for the oil feed is wrong. I've now brought a rb25 hybrid turbo in good condition to replace mine but unsure what sized restrictor and bolts to use.

 

What size is the oil feed restrictor for the original turbo?

Also what sized restrictor would I need to use for the new hybrid turbo?

And am I correct in saying the coolant feeds and oil drain are unrestricted?

 

Thanks.

"Hybrid turbo" isn't enough information for anyone to help you regarding its required oil supply volume/pressure. Best to speak to whoever you bought the "hybrid turbo" from and ask them what it requires. 

To answer your other questions - 

Your RB25DE didn't come with a turbo, so it didn't have an oil feed restrictor for the turbo that wasn't there. 

No one knows what size restrictor your "Hybrid turbo" requires. For all we know it's a journal bearing turbo and doesn't even need one at all.

Correct, coolant and oil drains do not have restrictors in them. 

  • Like 1
GTSBoy Grand Master

GTSBoy

Posted
Posted
On 11/15/2022 at 11:05 AM, Murray_Calavera said:

"Hybrid turbo" isn't enough information for anyone to help you regarding its required oil supply volume/pressure. Best to speak to whoever you bought the "hybrid turbo" from and ask them what it requires. 

This. When I read the OP, I wasn't actually sure how to phrase this without degenerating into a rage about how there's no such thing as Stage 2 porting, etc etc.

  • Like 1
  • Haha 1
niZmO_Man Grand Master

niZmO_Man

Posted
Posted
On 16/11/2022 at 4:03 PM, GTSBoy said:

This. When I read the OP, I wasn't actually sure how to phrase this without degenerating into a rage about how there's no such thing as Stage 2 porting, etc etc.

LISTEN MATE I'VE PLAYED GRAN TURISMO...

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • OakvilleGTR
      Turn signal wiring question

      By OakvilleGTR · Posted

      Good morning all, Bit of a random question but figured I’d finally throw it out after wondering for a long while. Before I start, I'm hoping to do this purely out of personal preference. I think it would look better at night, and don't mind at all spending a few hours and dollars to get it done. I've copied this from a non-Skyline specific forum, so I apologize for the explanation of our headlight switch setup that we all know. Here we go: Zero lights (switch off) Parking lights (switch position 1) being a rectangular marker on the outside of the housing, my low beam being the projector in the centre (position 2), and a high beam triggered by my turn signal stalk. Most North American cars I’ve owned of this era have power to the amber corner (turning indicator) light as part of the first switch (parking lights). I’d love to have these amber corners receive power when the headlights and parking lights are on (headlight switch), yet still blink when using the turn signal which is of course a separate switch. Hopefully I’ve explained my question correctly. Is anyone aware of a way in which I might be able to achieve this? Thanks in advance
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      My heads are cathedral port! It's likely possible, but I don't want to add any extra moving parts (I know they don't move) between the heads, manifolds, etc. It will also affect how injectors/fuel rails etc sit and I don't really know if it would change how the FAST manifold goes/sits/fits. I have the LS6 steam pipes already as I have a very late LS1 block so it should be fine. I couldn't find anyone who had ever actually used one for this purpose, it seems 100% of people grind the water pump. The thermal spacers are 12mm and are half way to the cost of the newer water pump anyhow... so if it comes to that I suppose I'd rather buy a new pump. The bearing in the pump I do have is a little.. clunky, but it hasn't done that much time and I never noticed it when the car was together in the past few years, so..
    • sonicii
      Lower A arm Skyline v35

      By sonicii · Posted

      The bushing has failed, not all that uncommon for a car of this age.  Any mechanic should be able to push in a new bushing for you, or you can probably buy the entire lower control arm, complete with bushes.
    • The Bogan
      Mistakes were made, my R34 Story

      By The Bogan · Posted

      Could you not use "thermal" spacers to give the clearance, like the ones I used between the blower and head? That raised the manifold height by around 10-15mm Albeit the ones I used were for cathedral ports, but I assume they have similar for rectangular ports????
    • Red Sky II
      Looking for autoelectrician in Perth who can do the OEM to double din stereo upgrade.

      By Red Sky II · Posted

      Thanks Paul I reached out to Autotainment but they no longer work on JDM cars as the guy who used to do the work moved on and is no longer doing that kind of work. I am talking with Level Up Audio though.
×
×
  • Create New...