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krasuskyp's Avatar
 
Join Date: Nov 2001
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turbo- axial plan inquiry

Mornin, Germs - question for the braintrust here:

Motor's out to tend to leaks, found axial play in turbo that I want to run past youseses. It's a Jerry Woods Garret a/r .83 / ITS hybrid, and the shaft has more movement than what I'm accustomed to on any KKK's I've checked for play.

I understand on those that the play may seem excessive as the oil when circulating creates axial tension - is that the same case w/ this unit?

It's probably double than what I'm comfortable with - blades not hitting housing... yet.

OK to keep running it? Car was boosting fine otherwise. Turbo's always whistled pretty damn loudly, albeit Zork'd.

TIA, all...

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Paul... CT | '87 930 | '08 M3 6gang vert |
past:

| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 04-23-2018, 06:14 AM
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Is it a ball bearing center housing or journal bearing? Makes a big differance.
A journal bearing center housing has to have a little bit of sideways play for the journal bearings inner and outer diameter oil clearances and a ball bearing center housing shouldn't have noticable play or just a very tiny bit.

You could take a video of the axial play you're talking about and ask Chris at Turbokraft what he thinks. Nobody can make a really good judgement without seeing the movement.
If it's journal bearing, working good, and not blowing any smoke or leaking oil I'd guess you could just leave it as is and enjoy the car.
Old 04-23-2018, 07:46 AM
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thanks Jim - yeah, journal not BB

that was sorta gonna be my plan but wanted to run past you allseses first

only concern is if it does nuke that it might then ingest all the shrapnel?

yeah, no oil leak (there! lol) or smoke

will send vid to GuruChris 8-)
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Paul... CT | '87 930 | '08 M3 6gang vert |
past:

| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 04-23-2018, 10:51 AM
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My brand new Borg had a lot of play. I always laugh when people say, “no shaft play”. Sooooooooo, the shaft is welded to the bearings? 😂
Old 04-23-2018, 02:29 PM
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Hmmmm, send vid to CC at TK, or maybe even measure it using dial indicator and send that data to CC@TK. Feels like I've heard that song before?
Old 04-23-2018, 03:13 PM
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yeah did that - he said if no symptoms otherwise, run it. Phew!

Heh, that's funny 'Tip... right? And tx for that datapoint.

Thanks again, all!

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Paul... CT | '87 930 | '08 M3 6gang vert |
past:

| '07 S6 | '98 M3 vert | '01 M5 | '96 993 C2 cab | '05 S600 Sport - biturbo V12@Just Not Right 495rwhp / 612rwtq |
| '58 TR3A | '01 S8 | '95 S6 6gang | '88 M5 | '87 190E 2.3-16 |
Old 04-25-2018, 09:34 AM
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