Jump to content
SAU Community

Rebuilt Gt2530 Is Finally Back Onto Tha Rb20 :)

iz32

By iz32,
in Engines & Forced Induction

 Share

Recommended Posts

iz32 Community Regular

iz32

Posted
Posted

gday.

has anyone experienced a blocked oil feed line to the turbo before? or a reason why no oil is getting to the turbo? maybe something on the block side blocking the oil feed?

basically after the install i took it for an easy drive round the block. after it warmed up i brought it slowly upto 3000rpm where the turbo starts its spool and got a dry whining sound. i killed it an rolled into my drive.

and notice smoke from the exh housing but it smelt alot like burning paint from the rebuild.

NOTE: i turned the engine over 8 times at 5sec lengths without it firing before i started it for the first time and let it sit and idle for 10min after i fired it up. also has new oil and coolant.

any ideas guys???

BHDave Grand Master

BHDave

Posted
Posted

Yes, the factory line can get blocked. It only has a very small hole at one of the banjos so if the car wasn't looked after by a previous owner you may be paying the price. The factory banjos also have restrictors in them.

The easiest way to check if the turbo is getting oil is to just loosen the oil feed line at the turbo and see if oil spews out when you crank the car. Or just drop the oil return and see if oil is getting through that way.

iz32 Community Regular

iz32

Posted
  • Author
Posted
Yes, the factory line can get blocked. It only has a very small hole at one of the banjos so if the car wasn't looked after by a previous owner you may be paying the price. The factory banjos also have restrictors in them.

The easiest way to check if the turbo is getting oil is to just loosen the oil feed line at the turbo and see if oil spews out when you crank the car. Or just drop the oil return and see if oil is getting through that way.

thats what i suspected.... would there be much damage?

considering the turbo unit was dripping oil when i fitted it. hoping that theres some lube there.

and that i only let it idle for 10 min with a 2min drive shifting gears at 2300rpm but pushed it slowly upto 3000rpm once then killed then ignition..... :)

gonna pull the oil feed hose off and get a new one made up at enzed soon as they open

its gotta be the only part i didnt go over before refitting, cos..... its a braded oil feed line...?!? :)

discopotato03 Grand Master

discopotato03

Posted
Posted

I'd be removing the oil supply line from the block and cranking the thing over (don't let it start) to see if oil is getting to this point . Should not be too messy with a rag at the ready . If this works ok I'd remove the oil line itself and blow through it to see if its blocked . Look for kinks or any signs of being crushed/burnt etc . It won't hurt to drip feed some CLEAN oil into the turbos oil inlet as well . Given time the oil should drip through the bearing housing and out the drain hole underneath - I'd remove the drain pipe to be sure .

Hate to be the bearer of bad news but ball bearings don't like being spun dry or nearly mainly because of the speed these ones run at . Its impossible to say if the bearings have been damaged or not . I think I'd want to at least remove the dump pipe and spin the thing with my fingers to see if it felt rough or for excess shaft movement . If not sure remove the unit and get it assessed by a specialist .

Cheers A .

iz32 Community Regular

iz32

Posted
  • Author
Posted

good news is i did it right first time around... bad news is i have identified the sound as the original sound i heard 5 weeks ago and the reason i had the turbo rebuilt.... unfortunately its not the turbo bearings making the sound as i originally thought......... $1200 later :laugh:

anyways such is life and i have a higher spec turbo now.

maybe someone can enlighten me on some likely causes of this mysterious sound.

imagine a bandsaw in the distance, thats what it sounds like. its not too loud, the sucking of the air is maybe twice as loud. it only happens when boost is coming on and then fades away when u take your foot off the throttle and there is no performance loss. its definately coming from the left side of the engine bay.

and its definately not the sound of a failed exhaust gasket.

thanks guys.

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


  • Latest Posts

    • Kinkstaah
      NC MX5

      By Kinkstaah · Posted

      I'd just like to restate that I don't think anyone here is actually hating I recently sold a car part to a guy who was building a forged auto R34, with MV stall and aiming at ~450kw. I told him that I'm him, from the future and to stop after it explodes once. I told him I knew he won't listen the first time, and that's fine. But if my predictions do come true - Change direction faster than I did. I also said it's probably no coincidence that the dyno plot of a reliable turbo engine starts to look a lot like a N/A motor. :p
    • CRSKmD
      R32 Sedan - Grip and Drift (have my cake and eat it too build)

      By CRSKmD · Posted

      Got just the wing painted and fitted up to the existing boot. Big visual change and about time after having a GTR wing sitting in the shed since 2018 Headed up to Mallala with a quick obligatory stop in at Boliver OTR Oil control mods seems to have worked. I checked the catch can after session 1 and there was a dribble of water/e85 with barely any oil in it. After session 2 and 3 there was almost nothing and I stopped checking after that. so either great success or catastrophic failure/block of the external breather The GTR wing made a noticeable difference in the 160-185km/h sweepers. It was a very hot day for the cars at over 33C but the previously done cooling upgrade/ducting/water sprayers meant I never saw over 60C intake, 105C water and 100C oil and temps would drop back down very quickly once I shut it down. AD09's are a decent tyre but certainly and expectedly a step down when compared the the CR-S/AR-1 I have had on the car for years of track days. The handling characteristics of my car which I often describe using the Tony Hawks Pro Skater balance mechanic where either side of the center is understeer/oversteer was much more pronounced with no "green/safe" zone in the middle. However, imo it steers well/easily during oversteer largely thanks to the custom ACOSTAL front end. Enjoy a loose lap POV with my mate giggling away as a passenger.   Group photo for Peer Pressure Racing made it back home and gave it a wash Overall a great success compared to my previous two track days where i cooked the Starlets motor and blew up the new diff in the R32  
    • PranK
      R32 GTR (USA-Alabama) KG1 1990

      By PranK · Posted

      Nice. I'm looking forward to the updates!
    • Templim
      AC not coming from top vents

      By Templim · Posted

      Ayooo, been a while mates. I have a s2 r33 gtst and air stopped coming out of all the top vents.   My car has always made an actuator gear noise when turning the car on but that's a different issue I think? Did searches and am at process of thinking it's an actuator or some type of motor? I see a few different actuators and don't know which one. Would be nice to know if it was the one that's under the steering wheel so the dash doesn't need to come out.
    • sunsetR33
      Custom titanium intake

      By sunsetR33 · Posted

      Hi, just checking. Did you get this stuff made by Vspec Performance and at what price roughly? Looking into (sometime later) also getting such a intake kit, and Trust as well as HKS don't make a full set like this anymore.
×
×
  • Create New...