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turbo end play...problem?
Hey guys, so I noticed lately, that when I start it from cold (after it has been sitting at night) and drive it, that under boost, there is a kind of a squeal/hiss sound coming from the turbo. After you drive for 2 minutes, and the engine is warm it does not do it.
I took my intake apart and did my CCV mod. While I had the intake off, I took hold of the impeller, and checked the endplay. I was a little startled at first. I can move it back and forth. I set up my dial indicator, and the end play is 0.020" (20 thousandths of an inch). I know this is more than spec of a new turbo, but is this acceptable? The truck has 190 000 kilometres, and the mods listed below in my sig.
Im a little concerned, and would rather suck it up and swap out the turbo now, than have to pick pieces of a housing out of my motor...
2001 Ford F-250 Super Duty
7.3 Powerstroke - ZF-6 speed - 6" lift - Bilstein 5150's - 35's - 4" Magnaflow exhaust - Superchips 1705 - AFE Stage 2 intake - Isspro gauges - HPX line - 203* T-stat, Billet housing - Bypass coolant filter - Bypass oil filter - Stancor GPR - High Idle Controller - International 'blue' CPS - non-EBPV pedestal/exhaust housing - Wicked Wheel - CCV mod - Boost Fooler - 06 Harley lights - T500 HPOP - Valair Clutch