Newly acquired 20g - too much shaft play??

Posted By: Michael Zuk

Newly acquired 20g - too much shaft play?? - December 23, 2003 05:12 pm UTC

I just bought a Mitsu TD05-20g from Will in Calgary where he bought it from Darin (who rebuilt it clipped/ported). Thanks again Will for the great price!

A good friend told me you can kind of test a turbo by wiggling the compressor wheel/turbine wheel and seeing how much movement you get...

In my case there is very slight movement, hardly noticeable to anybody but a perfectionist. Will who wasn't worried, said it should tighten once oil cycles through it?? Is there some other way to test or tighten it?

I trust Darin's rebuild but I just want to be 100% sure before I install it...

thanks, mike
Posted By: Ghislain Goudreau

Re: Newly acquired 20g - too much shaft play?? - December 23, 2003 06:11 pm UTC

I think that a new or rebuild Turbo should not have any shaft play.

How would you describe the play(mm)???

Was this unit balanced after the rebuild???

Ghislain.
Posted By: Michael Zuk

Re: Newly acquired 20g - too much shaft play?? - December 23, 2003 06:21 pm UTC

Maybe I have the terminology wrong but the compressor wheel seems to "wiggle" inside the housing maybe by 1-1.5mm??/

here is the link darin posted to sell the thing originally...
http://calgdsm.infopop.cc/6/ubb.x?a=tpc&s=918602552&f=305608762&m=965607353
Posted By: Mike Kozlakowski

Re: Newly acquired 20g - too much shaft play?? - December 23, 2003 07:16 pm UTC

This is normal, I have a factory new turbo on my shelf that has that kind of play and all new units I've seen had some play. The only ones I've seen that didn't were rebuilt units which failed within 200km.
Posted By: Michael Zuk

Re: Newly acquired 20g - too much shaft play?? - December 23, 2003 07:53 pm UTC

hmmmm interesting, well like it said in the Darin's post, it has been balanced so i guess I should be fine. spy

Thnks for you input.
Posted By: Vince Amato

Re: Newly acquired 20g - too much shaft play?? - December 23, 2003 08:08 pm UTC

Up and down movement is fine as long as the blades aren't hitting the housing, it'e normal to have up and down play, the play will be greater when the center cartrage is dry, as soon as it gets oil the play will be less.

In and out movement is the play to be worried about, there should be no in and out movement at al, if there is it's a sign of warn seals.
Posted By: Michael Zuk

Re: Newly acquired 20g - too much shaft play?? - December 23, 2003 08:19 pm UTC

looks like I have recieved a slap on the wrist from administators...oh well

yes the movement is strictly "up and down" or side to side (2-D) and it doesn't seem to be hitting the sidewalls even at its closest point.

So Will was right, once the oil gets in there it'll be fine.

Stupid question for those that know better...could I put it in now and simply run lower boost? (yet to purchase 255, 660's or safc. i have just about every other bolt-on incl ext wastegate)
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