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New turbo cartridge acceptable play
by
Ian0391
on 13 Jun, 2017 18:59
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So long story short, I was desperate for a k14 turbo so I bought a cartridge from a dealer who is not known for quality. The turbo cartridge has about .030" play axially along the shaft, pulling in and out on the wheels. I contacted them and they responded that the manufacturer assured them that is more than acceptable. It has enough play though that the compressor wheel can touch the housing. Does anyone know what's acceptable? Are there any numbers out there? I checked through my Bentley manual but found nothing.
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#1
by
libbydiesel
on 13 Jun, 2017 20:19
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If it can touch the housing it is most definitely NOT acceptable.
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#2
by
Ian0391
on 13 Jun, 2017 20:44
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Yeah that's what I figured. Do you know what amount is acceptable?
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#3
by
libbydiesel
on 13 Jun, 2017 21:50
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Axial play should barely be perceptible. I haven't measured it but you can just barely feel it when you push one way and then the other.
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#4
by
Ian0391
on 14 Jun, 2017 04:45
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That's what I always thought. It is definitely very perceptible, visually and by feel. I was actually suprised when I measured it that the numbers were so small. They supplier is saying that those numbers are fine though which baffles me.
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#5
by
libbydiesel
on 14 Jun, 2017 10:13
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Someone who sells garbage knock-off turbo cartridges probably isn't all that concerned about relaying accurate specs.
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#6
by
Ian0391
on 14 Jun, 2017 13:53
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Yeah that's more or less what I figured. I'm definitely sending it back. Do you know where I can find a k14 new, used or rebuilt? I haven't had much luck. All I cam find is knock offs also of questionable quality.
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#7
by
TylerDurden
on 14 Jun, 2017 14:35
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I've got a couple of Eco k14s that need servicing. If you want one of these (or from others), or keep the one you have, you could get service from
xsboost.
PM me if you're interested.
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#8
by
Ian0391
on 15 Jun, 2017 14:33
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I sent you a pm. According to the vendor the .030 of play will be taken up by the oil the bearing runs on. I'm not sure if he thinks I'm running 100w oil or what but that seems entirely rediculous to me.
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#9
by
vanbcguy
on 15 Jun, 2017 15:01
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Radial play will be taken up by oil pressure. Axial play will not.
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#10
by
Ian0391
on 15 Jun, 2017 15:10
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So I just by chance realized why there is so much play axialy, the compressor nut was just finger tight. I don't know how I didn't realize this sooner. Goes to show the excellent build quality.
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#11
by
TylerDurden
on 16 Jun, 2017 07:16
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Update:
Looks like all I have right now are a couple of T3s that need seals. I thought they were k14s, but I musta sold those. My bad.
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#12
by
Ian0391
on 16 Jun, 2017 11:13
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It'd all good, unfortunately only a k14 will fit where I'm putting it. I think I might just rebuild this cartridge myself.
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#13
by
vanbcguy
on 17 Jun, 2017 10:09
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If the nut is loose enough that the wheel has moved on the shaft it needs to be sent out for balancing. Considering it was shipped loose I'd wager it hasn't been balanced properly at all yet. Remember these spin at 100,000+ RPM, having it balanced is critical.
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#14
by
Ian0391
on 17 Jun, 2017 11:21
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I always thought the compressor wheel was balanced seperately from the turbine and shaft so the compressor wheels could be swapped?
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