under_psi

I have a turbonetics t3/t04E that was used for roughly 4000 miles. The shaft goes up about 1/2mm and down about 1/2mm, so all together about 1mm of shaft play. is this normal for a non ball bearing turbo?


TIA


[Modified by T.O.tegs, 1:20 PM 3/27/2003]

intekragsr

me too......bump

under_psi

any help would be very appreciated

TheSwift1

I like a lot of shaft play.. 7 days a week is pretty normal for me..

brekekex

TTT

CalvitoSol

from what i was told, a little up and down shaft play is ok. Now if you try to push it forwad and back or fore and aft, then you're in need of a rebuild. don't quote me on this but that's what i was told.

SiRkid

1/2 a mm..yuo cna measure that?
lol. that seems ok..but i could be wrong

b16ahybrid

You really shouldn't have any shaft play.My old t3 that i ran for about 2 1/2 years had no play at all (very little so minimal not even measurable). If your getting some play it's probably going to need to be rebuilt soon...just remember when that turbo is spooled (spinning really fast) if it's got any play it's going to throw the balance off and cause excessive wear on the bearings.

Diego Boost

Shaft play is bad. If you have it then consider rebuilding your turbo.

PeakBoost

you will have minimal "side to side" shaft play, this is due to the clearances between the bearing and the shaft. the oil pressure fills this area. you should never have "in and out" play..
thanks

edit: excessive "side to side" shaft play is noticable when the wheels are hitting the housings.

hope this helps


[Modified by CHEAPTURBOdotCOM, 5:09 AM 3/27/2003]

brekekex

The turbo in question has no "in and out" play, however, when moved up and down it seems like there is about 1 mm of full movement.
The turbine will not make contact with the housing, but it looks pretty close when you wobble it up and down.
Just trying to determine what "minimal" is.... can you actually see the turbine moving?

-Thomas

under_psi

let me see if I understand this, the oil pressure compensates for the minimal up/down shaft play? so basically, as long as the wheel still has clearance from the housing then it's fine but if the shaft moves in/out then the turbo needs a rebuild.

is that correct? can we get a few more opinions from the experts on this?

Drag_On

Lots of mis-information in here and a few correct responses..

You can have side to side shaft play.. You should use your own judgement as to whether or not its too much.. Its the in and out shaft play your truly concerned with.. If there is no in and out shaft play --- your good..

bottlefedb18c1

you have to rember that there is a oil clearance in there there is going to be some if not the oil will never get to the bearing that good

and did you try this when it was dry or put some oul though it and then spin the shaft and you will see that it will take some of the play up, and when the oil starts to get pushed out from under the bushing it will get loser

that is just my .02 cents

under_psi

this is getting a little confusing...please people, if you don't know don't guess!!!

I'm not very familiar with turbos so I wouldn't trust my own judgement on this. the shaft moves up about 1/2mm and down about 1/2mm, so basically about 1mm of up/down shaft play. the shaft doesn't move in/out at all.

would a brand spankin new non ball bearing turbo have any up/down shaft play?

metal-x

Camille??? you joined the darkside since when????

baddassduramax

i just got a t3/t04e (the one in my avatar) about 2 wks. ago and it has a little up/down shaft play, thats normal, dont worry bout it as long as it doesnt hit the housing and does move foreward backward or in out whatever you want to call it.

under_psi

ever since I discovered that you can make cwazy powa with 13.5:1 compression and boost y0!!!

can we get a few more opinions please on shaft play: what is acceptable

brekekex

TTT.
Forum moving rather quickly...

-Thomas

falcongsr

the more the better! if i don't have enough shaft play, i complain to my girlfriend.

ahobbs

ggod one.

QCKGSR

2"