Thread: Number 2 turbo (left side)! toast

A turbo bearing is essentially a bush, yes. It’s metal and eventually they do wear. The restricted performance error however will have nothing to do with the bearing/bush unless the wear is so great that the impellers are impacting the casing (unlikely as you can hear that a mile away). I’d suggest it’s more likely related to the variable vane system on that turbo that’s the issue, but hey, I’m lounge chair diagnosing so what would I possibly know to be honest.

Originally Posted by DiscoJeffster

A turbo bearing is essentially a bush, yes. It’s metal and eventually they do wear. The restricted performance error however will have nothing to do with the bearing/bush unless the wear is so great that the impellers are impacting the casing (unlikely as you can hear that a mile away). I’d suggest it’s more likely related to the variable vane system on that turbo that’s the issue, but hey, I’m lounge chair diagnosing so what would I possibly know to be honest.

yea - I can hear the turbo chopping - mainly sounds like a dump/bypass not opening as air pushed back against spinning turbo and it 'chops'/flutters badly ... i do not know enough - i thought inlet manifold issue - apparently not. as for turbo with bush - understand but perplexed as to it use over a bb - replaced plenty on tractors and even the old Subi WRX when punching laps and nudging fenders .. all BB turbos not bushed

it seems strange - but then... the gurus know....i hope - pricy none the less. apprenly they rebuild - bored out with BB in stead of bush, new impeller (better etc) as new ones have same inherent issues...

Lots of turbos run oil film bearings and they eventually wear usually causing excessive smoke and oil consumption leading to a big bang.

There can't be too many inherent issues if it lasted 260,000. My turbo was toast at 100,000 on two different VW Transporters, T4 and T5. The T4 went at 110,000 and the T5 at 95,000 with the auto trans following at 105,000 on the T5.

I had both my turbos replaced at about 230,000 on the D4. The inlet vanes were damaged on both for some reason not known to me. I also had both manifolds replaced due to the restricted performance issue at an earlier date.

I guess 260,000 is good going??? hard to know - maybe I expected more...

turbos going at 100,000kms would be an issue in my view for sure bobD - and I would be ****ed -

running trucks/tractors etc hard I would not expect a turbo to go, but its a risk. I was really just looking at weather it was an issue known or not - or just the car now getting to end of mechanical life? i.e. other turbo? (drain fitted by dealer in first few months). or the motor outright?

Anyway 10k out the door in last month with new struts etc. make me feel like there is more to come..is there anything else to do when all the peripherals off the car?

it may be time to trade.. but missed that window I guess 100,000kms ago .

Yes, mine was perfect up to about 190,000 when expensive stuff really started to go wrong. I still haven't had a transmission problem due to many oil changes but who knows when that will strike.

The car owes me too much to get rid of it so I just keep it as my tough bush basher and use the RRV for touring now. My DS is my town car so the D4 is semi retired!

Originally Posted by gotaflat

running trucks/tractors etc hard I would not expect a turbo to go, but its a risk.

The turbos in both my tractors are supposed to have their bearings checked every 1,000 hours and overhauled or replaced if out of spec.

Originally Posted by Graeme

The turbos in both my tractors are supposed to have their bearings checked every 1,000 hours and overhauled or replaced if out of spec.

good think about Johnies is you can get to them... Discos!

Ow by the way - other turbo gone as well....