-5 Install Problem

[portaz]

I'm sure someone has rebuilt them before? I will call garrett at chipping norton in the morning cause I think maybe gcg gave me bad advise

[GTScotT]

How do you mean? Is there some kind of evidence that they have been rebuilt prior?

What did GCG tell you

[portaz]

I should clarify, I really believe they need restrictors if standard oil pump but the garrett web site says oil should enter at 40-45 psi into the turbos my engine is nearly 40psi at idle and at 1500 would have been over the recommended limit but I will speak to garrett today about replacement chra.

[portaz]

Oh and I meant surely someone has rebuilt -5's before to give me an idea of cost not my turbos themselves

[r32-25t]

-5s have restrictors in them from factory you don't add extra ones

[Piggaz]

-5 core is about $800 ish from GCG.

[portaz]

Ok what a day I've had chasing this, no one in Sydney has cores or turbos for sale but repair if they do is $1150 ea, called crd to see if they had any and or restrictors which I was told is basically info they keep to themselves. Jez gave me rotomaster in Vic contact and they have new -5 for $1060 ea in gst but on the 2nd call to arrange it the guy asked about why etc and he severely doubts water would cause it so will inspect them and repair of my cores if possible with re balance etc around $500 ea or with new cores assembled and posted $760 ea. with restrictor it seems ppl get the upper banjo for stock applications from enzed etc weld them up and drill a .040 hole in it although there is a inbuilt one garrett recommend no more than 65psi max into their cartridges . The guy down there was very very helpful and probably the only person with stock of new turbos and replacement cartridges so a+ for rotomaster . Oh and it can be normal without balance pipe on for bb turbos to push oil oil due to imbalance pushing shaft slightly to one side which moves the circlip and they will leak, also hyper gear can re do them with bush bearings for $700 I hope all

This today will help

Someone in the future feel free to pm anytime for more info.

Scott

[NXTIME]

Have you tried Precision Turbos at Wetherill Park?

9756 5757

Get John to take a look at them.

[portaz]

Thanks mate but I've already sent them to rotomaster as I had a good feeling from him

[scotty nm35]

I know the maximum recommended oil pressure for a Garrett core is 65 psi but my VQ sits on 8-10 bar when cold, without a restrictor, and I have never seen any oil from either end Portaz.

Was it both compressor seals leaking?

[portaz]

Both turbos acted exactly the same some oil in front of compressor and some spitting from the outlet. This restrictor thing is crazy though u got anyone down there Scotty that makes them? Up here this stuff and id2000 injector seals etc is a big hush hush as u know.

Scott

[portaz]

Both turbos acted exactly the same some oil in front of compressor and some spitting from the outlet. This restrictor thing is crazy though u got anyone down there Scotty that makes them? Up here this stuff and id2000 injector seals etc is a big hush hush as u know.

Scott

[scotty nm35]

Yep, I get them from either Proflow through the local wholesaler, or from Ebay in England if you can wait. (http://stores.ebay.com.au/Torques-U-K/Turbo-Flanges-/_i.html?_fsub=2445530012&_sid=81447352&_trksid=p4634.c0.m322) Both options will force you to run braided oil feed lines.

If you are still running the banjo setup, perhaps welding them and drilling a 1mm hole will do the trick? Or I could turn up a brass reducer for you on the lathe...

Perhaps r34 gtr banjo bolts are restricted? They run BB cores don't they?

[portaz]

Supposedly they one on the block is marked j or m can't remember but I have that any chance if you modding a couple of the oil pressure feed banjo for me? As I like your style

[scotty nm35]

Yeh, just express them down and I will stick a restrictor in them somehow. It still won't guarantee a pressure output, but it will lower the pressure. Who would even check the turbo oil feed pressure...

[portaz]

Apparently crd but f..k knows how I'm told enzed have them I will do some checking as I won't get my turbos back till end of week due to transport so I really need to install them this weekend so it's prob better to find a banjo that fits 10mm? Then weld a drill it as u said but I'd prefer to pay you to do that tbh

[scotty nm35]

Are they rebuilding them to BB core? or bushed?

[portaz]

Bb core possible rebuild or replace the whole chra

[portaz]

Ok so they got cleaned rebuilt and balanced etc seems there was some heat involved but mainly some rusty water still inside and the upper housing of turbine bearing was cracked possibly from last owner, seals were not leaking but leakage Due to imbalance by having Tt pipe removed which probably caused a few thou movement one way allowing oil to escape. $650 ea postage inc custom banjo for oil pressure. Interestingly though I considered going back to braided line but there are no restrictors in those fittings either and would be roughly 3mm hole unless there is a different kit to the one I have?

Scott

[GTR1993]

As reference my standard lines were stuffed by a retarded mechanic doing up the banjo bolts so tight that it crushed the banjos. I run braided lines coolant and oil and have no issue.

I can't really see how u will have excess pressure considering the drain is so large, there is no way pressure would build up in the core of the turbo wit a hole the size of the drain there.

Also you don't need to hook up coolant lines I have left them off before on some set ups.

Cheers