hodge Posted February 22, 2011 Share Posted February 22, 2011 Since I fires the car up my turbo has developed shaft play. The turbo was new when fitted with no play at all. Now the car was fired up on Sat, and again base mapped on Sunday. After the car was turned off it was noticed the shaft has about 1mm play in either direction. Now the turbo is getting oil and has a Journal bearing so doesn't need a restrictor as far as I'm aware. Any thoughts Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted February 22, 2011 Share Posted February 22, 2011 my garret has been just like that for a while. hasent poped yet Quote Link to comment Share on other sites More sharing options...
hodge Posted February 22, 2011 Author Share Posted February 22, 2011 I've just been out and checked it again. I'm may have over estimates the play on it. I recon it's about .5mm each side instead of 1mm. Here's a vid of the movement. http://i200.photobucket.com/albums/aa74/hodge_012/3d0d58b1.mp4 I'm just struggling to understand how and why it goes from no play at all to having play when the car hasn't even seen boost yet. Quote Link to comment Share on other sites More sharing options...
Lee P Posted February 22, 2011 Share Posted February 22, 2011 Is it a bb turbo? It's not the side to side play it's the in out play that's an issue. Quote Link to comment Share on other sites More sharing options...
SilentAgro Posted February 22, 2011 Share Posted February 22, 2011 I guess this turbo doesnt have Oil running round it? Im still new to this. Quote Link to comment Share on other sites More sharing options...
Scott Posted February 22, 2011 Share Posted February 22, 2011 Are you sure there was absolutely no play whatsoever when you got it? I mean absolutely sure? I would have thought there would be SOME movement even in a new turbo. With it being journal bearing would it be more or less likely to show play? Quote Link to comment Share on other sites More sharing options...
bignum Posted February 22, 2011 Share Posted February 22, 2011 A journal bearing will/should have some play, imagine an engine bearing it needs a small gap for a film of oil to form, saying that, the last bb shaft i had a play with felt like it was falling out of the housing and aparently it was fine:) Quote Link to comment Share on other sites More sharing options...
hodge Posted February 22, 2011 Author Share Posted February 22, 2011 Is it a bb turbo? It's not the side to side play it's the in out play that's an issue. It's just a journal bearing lee. I'll check the in and out play in a bit but I don't think there is any. Are you sure there was absolutely no play whatsoever when you got it? I mean absolutely sure? I would have thought there would be SOME movement even in a new turbo. With it being journal bearing would it be more or less likely to show play? There was definitely no play what so ever on it when it was fitted. I fitted a set of Whifbitz's hybrid turbos to a friends supra and those had a slight amount of play on the shaft from new, but performed amazingly. Am I being a little paranoid here. Quote Link to comment Share on other sites More sharing options...
jevansio Posted February 22, 2011 Share Posted February 22, 2011 am i being a little paranoid here. yes, Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted February 22, 2011 Share Posted February 22, 2011 A journal bearing will/should have some play, imagine an engine bearing it needs a small gap for a film of oil to form, saying that, the last bb shaft i had a play with felt like it was falling out of the housing and aparently it was fine:) thats what i am thinking, when its been running there will be a suface of oil around the bearing (movement) and when left cold there will be lack of oil (not much movement) Quote Link to comment Share on other sites More sharing options...
Guest Soarer Tim Posted February 22, 2011 Share Posted February 22, 2011 oil pressure takes up the side to side play, between bearing and shaft. You don't really want to see in and out play. Quote Link to comment Share on other sites More sharing options...
Scott Posted February 22, 2011 Share Posted February 22, 2011 oil pressure takes up the side to side play, between bearing and shaft. You don't really want to see in and out play. That's what I was thinking. Is it possible that there was some kind of sozzle or inhibitor that was possibly a bit sticky meaning the play wouldn't be noticed before having it properly ran? Quote Link to comment Share on other sites More sharing options...
hodge Posted February 22, 2011 Author Share Posted February 22, 2011 No backwards and forwards movement at all. Feels solid. So is it safe to say it's fine then. Quote Link to comment Share on other sites More sharing options...
johnny g Posted February 22, 2011 Share Posted February 22, 2011 No backwards and forwards movement at all. Feels solid. So is it safe to say it's fine then. Have a word with yourself mate! It's sounding like it's fine! The oil pressure will take up the slack Quote Link to comment Share on other sites More sharing options...
hodge Posted February 22, 2011 Author Share Posted February 22, 2011 Have a word with yourself mate! It's sounding like it's fine! The oil pressure will take up the slack Nothing wrong with being enquisitive Johnny. I just wanted to make sure it was all fine before it ran any boost. Quote Link to comment Share on other sites More sharing options...
michel lane Posted February 22, 2011 Share Posted February 22, 2011 its like having child before the tuning session John , you begin to notice everything , i can hear that rear wheel woooooooble from here ..... its fine . Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted February 22, 2011 Share Posted February 22, 2011 ha ha johns wife has spiked his muffin tonight, space cakes for hodgey!! thats why your so paranoid ?? sounds like good news mate Quote Link to comment Share on other sites More sharing options...
T2 MSW Posted February 22, 2011 Share Posted February 22, 2011 A journal bearing will/should have some play, imagine an engine bearing it needs a small gap for a film of oil to form, saying that, the last bb shaft i had a play with felt like it was falling out of the housing and aparently it was fine:) I wonder whose that was The precision DBB's seem to have a lot of play in them, Ive felt 2 out the box units and they all have 1-2mm play in them. I think as Lee said its the in and out play thats an issue. Quote Link to comment Share on other sites More sharing options...
hodge Posted February 22, 2011 Author Share Posted February 22, 2011 its like having child before the tuning session John , you begin to notice everything , i can hear that rear wheel woooooooble from here ..... its fine . I just want everything perfect when Ryan comes up do do his stuff that's all. Odds are, most of this will come apart and go back together before mapping anyways. ha ha johns wife has spiked his muffin tonight, space cakes for hodgey!! thats why your so paranoid ?? sounds like good news mate Rob I think it's more likely she'll put arsenic in at the min lol. Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted February 22, 2011 Share Posted February 22, 2011 Rob I think it's more likely she'll put arsenic in at the min lol. lmao ha ha Quote Link to comment Share on other sites More sharing options...
hodge Posted February 22, 2011 Author Share Posted February 22, 2011 It's no joke. I'm fearing for my life at the min. Quote Link to comment Share on other sites More sharing options...
johnny g Posted February 22, 2011 Share Posted February 22, 2011 I'm sure all will be fine matey. Just give her 10x the attention you've given the car in the last week. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted February 22, 2011 Share Posted February 22, 2011 As above radial play (up and down) is normal but axial (in and out) should be minimal Quote Link to comment Share on other sites More sharing options...
dr_jekyll Posted February 22, 2011 Share Posted February 22, 2011 nothing wrong with a bit of shaft play ......... ooooo gigady Quote Link to comment Share on other sites More sharing options...
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