gearheadstik Posted March 14, 2007 Share Posted March 14, 2007 So, I have been bustin butt to try to get my Holset project ready for the SEZ8...I have done most the work to get ready and now this comes up...Ok I have two holset HE-351 turbos, one i bought new which came from the holset plant in SC. I purchased it off ebay, new, only test run according to the person I purchased it from....I dont know if The dude worked at holset or it was holsets company listing person...But it did ship from holset direct.....Anyway to the problem...I noticed it looked to have too much play..so i measured and it is .045...I also have one that came off a truck with 50k miles and it measured .012 ...This pisses me off that I made all the mods to the new one...I would think it should not be used...Does any one know What kind of clearences a new non ball bearing turbo should have? What do you holset guys think? Use it or rebuild....Thanks for the advise Quote Link to comment Share on other sites More sharing options...
NCchris Posted March 15, 2007 Share Posted March 15, 2007 http://www.holset.co.uk/files/4_4_1-service%20repair%20manuals.php Go here and download the .pdf Service Manual and the Service Data Sheet for your turbocharger. It says .001-.005 end (axial) play and .013-.020 radial. chris Quote Link to comment Share on other sites More sharing options...
gearheadstik Posted March 15, 2007 Author Share Posted March 15, 2007 Thanks for that..but man the thought of a out of the box turbo being out of spec....I wonder did this one fail spec and a employee sell the heap on ebay..you wouldnt think that kinda stuff would happen, but does it?? Quote Link to comment Share on other sites More sharing options...
mtcookson Posted March 15, 2007 Share Posted March 15, 2007 If he did, I would think he would need to list it as B stock... but I'm not sure. Were all of the modifications done to the housings? If so, you could just swap the housings to the better center section. Another thought is if its dry there could potentially be more shaft play since it rides on the oil... however I'm not sure if Holset's measurement specs are supposed to be done when it has or does not have oil. Quote Link to comment Share on other sites More sharing options...
gearheadstik Posted March 15, 2007 Author Share Posted March 15, 2007 Thats what I have done for now...but still pisses me off to think I need to order a rebuild kit and that still might not fix whats wrong... Quote Link to comment Share on other sites More sharing options...
gearheadstik Posted March 18, 2007 Author Share Posted March 18, 2007 So, today I pull the new turbo apart to look at the bearings and look at all this heat discoloration...It looks as it was run w no oil in it...keep in mind this was sold to me shipped from holset in SC as a new unit...it was new, only F...ed up...I'm thinking of writting holset a letter to find out if they have fired this guy yet or what... Quote Link to comment Share on other sites More sharing options...
datman Posted March 18, 2007 Share Posted March 18, 2007 Doesn't look good, I'm gonna take a look at my new Holset now Quote Link to comment Share on other sites More sharing options...
gearheadstik Posted March 18, 2007 Author Share Posted March 18, 2007 Does yours have any carbon in the ex side? I was thinking Holset test run them.. But this might have been a test turbo or come back... Quote Link to comment Share on other sites More sharing options...
datman Posted March 18, 2007 Share Posted March 18, 2007 pulled it apart, no carbon....looks like new in there...no play in any direction Quote Link to comment Share on other sites More sharing options...
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