TDI turbo with a lot of play.

sven · Jedi Guardian Joined: 27 Dec 2006 Posts: 814

The turbo mounted on my TDI has a lot of play, both radial and axial. But AFAIK it doesn't leak oil. We're talking aaaaa lot of play, didn't measure exactly, but we're talking millimetres...

I have another one, I'll think I'll switch to that one instead. It's a uge diffence between them.

Has anyone checked a used turbo to see how much play it can be without leaking?

72panelvan · Posted: Thu May 06, 2010 1:46 pm Post subject:

I had one on a knacked engine, it wasn't leaking oil but the fins wern't far off the casing, it wasn't worth the risk!

sven · Jedi Guardian Joined: 27 Dec 2006 Posts: 814

Package on its way, ordered a rebuild kit from eBay. Happy

sven · Jedi Guardian Joined: 27 Dec 2006 Posts: 814

Finally som time for a rebuild: http://switchamotor.blogspot.com/2010/06/turbo-rebuild-last-night_24.html

ElusiveStranger · Posted: Thu Jun 24, 2010 9:03 pm Post subject:

Nice going mate. I had a looksee at your blog from work this afternoon.

I can't believe how light it is at night there!
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chapp1123 · Posted: Thu Jun 24, 2010 10:18 pm Post subject:

Nice work on the rebuild!

I thought about doing this for my TD turbo but it only leaks a bit of oil and has hardly any play in it.

How hard did you find getting the turbo apart with rusty bolts etc?

When i read into this before some people say the turbo needs rebalanced? Or have i got the worng idea

sven · Jedi Guardian Joined: 27 Dec 2006 Posts: 814

The bolts gets loose really easy, even though the exhaust side is rusty the bolts are the easy deal. The only trouble is to get the exhaust housing of, there's definitely a need for some brute force.

These turbo's doesn't rotate with super high RPM and when it comes to a GT15 the compressor wheel is only pressed onto the shaft without splines etc. The shaft and the exhaust wheel are still fixed to each other though. We haven't done any balancing on any turbo that me or my friends have rebuilt. The other guys uses bigger turbines than me and they mark up the position for the turbines before the turbo is disassembled.

On the other hand, one of my friends got a damaged turbine blade on the compressor. He cut of the same amount of metal from the opposite side and put it back in the car again. Happily pushing 1.2 bar afterwards. Happy