mikey4410 Posted July 27, 2014 Author Share Posted July 27, 2014 Yeah or that for sure.its really bad scoring.havent ever seen it that bad before tbh. Quote Link to post Share on other sites
Liam_D Posted July 27, 2014 Share Posted July 27, 2014 100% oil contamination buddy! Nothing else scores the shaft like that. Oil starvation dosent score the shaft it leaves bearing material on the turbine wheel where it's been ran dry. You know where I am if I can be of any assistance Quote Link to post Share on other sites
seab Posted August 1, 2014 Share Posted August 1, 2014 Agree with Liam on this one starvation would see shaft discolouration rather than scoring. Got any pics of the journal bearings? Quote Link to post Share on other sites
Ollieh17 Posted August 1, 2014 Share Posted August 1, 2014 Bit off topic (sorry Mikey) but as theres two turbo guys on here though i'd ask. My td04 isn't boosting since installing it. Primed the turbo before the first start up and only boosts to 0.1 then there is a strange squealing noise. The turbo came as a working turbo off a Subaru so has been rotated by myself and the guy is adamant the turbo is fine. What would cause a turbo make this noise(if it is the turbo not a boost leak somewhere very hidden)? Quote Link to post Share on other sites
JayJ Posted August 1, 2014 Share Posted August 1, 2014 Bit off topic (sorry Mikey) but as theres two turbo guys on here though i'd ask. My td04 isn't boosting since installing it. Primed the turbo before the first start up and only boosts to 0.1 then there is a strange squealing noise. The turbo came as a working turbo off a Subaru so has been rotated by myself and the guy is adamant the turbo is fine. What would cause a turbo make this noise(if it is the turbo not a boost leak somewhere very hidden)? Sounds like something went wrong with rotating it.. Quote Link to post Share on other sites
Ollieh17 Posted August 1, 2014 Share Posted August 1, 2014 What it could it be mate?rotard a tf035 and a td04 before and they all worked fine? Quote Link to post Share on other sites
JayJ Posted August 1, 2014 Share Posted August 1, 2014 Is compressor wheel tightened up as it should? If you spin it with your hand does it make any sound/hit compressor housing? Is the compressor housing tightened up as it should? Quote Link to post Share on other sites
seab Posted August 3, 2014 Share Posted August 3, 2014 Rotating shouldnt make a difference unless, the rotor system was out of balance and had already worn a groove into the comp cover.Did you notice any damage to the inside of the comp cover when you had it off to rotate?Another possibility could be that the comp cover is not sat on 100% true (not sure how it is fixed to the bearing housing on a TD04 is it 3 tabs and bolts? or is it circlip? so has changed the front wheel clearance so when there is shaft motion (which there will be) it will touch.Have you spun the compressor wheel by hand firstly with the cover off, and with it on? do you find a tight spot? If turbo is shot the noise usually gets worse at higher speeds as the shaft flexes and oscillates more. Quote Link to post Share on other sites
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