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Replacing my 320d Turbo (Garret GT1749V)
- Thread starter Hellas
- Start date
Hellas
///Member
Looks like the 3 liter diesel turbo is made a bit stronger then. One colleague of mine's 320d is on 204000km without any sign on turbo failure (Or at least the turbo has not been done yet)
I removed the swirl flaps but simply removing the plates from the spindle.
As for possible signs: I had it where the car would smoke EXCESSIVELY on cold mornings. I usually blamed this on a malfunctioning EGR, but it could be oils bypass on the turbo? Either way, as time goes by, you think of the events before the turbo failure and slightly more smoke than normal under heavy acceleration may have been present. Also an indicator?
The turbo whislte I had before the failure is still there after the replacement, so I won't really read anything in that.
I removed the swirl flaps but simply removing the plates from the spindle.
As for possible signs: I had it where the car would smoke EXCESSIVELY on cold mornings. I usually blamed this on a malfunctioning EGR, but it could be oils bypass on the turbo? Either way, as time goes by, you think of the events before the turbo failure and slightly more smoke than normal under heavy acceleration may have been present. Also an indicator?
The turbo whislte I had before the failure is still there after the replacement, so I won't really read anything in that.
Bossman
Member
HELLAS said:
I replaced my 530d turbo about 6 weeks ago, already done about 3000km on the new turbo, I will post some pictures soon, the old turbo had 225000km on it and the only thing that broke on it was a fracture of one of the turbine blades, it came out under boost and embedded itself in one of the two parallel cats on the 530d.
The turbo had very little wear on the bearings , and the shaft was still great, Turbo exchange quoted me around 3000 for the parts and included a high speed balance , I am going to do that soon and keep it as spare.
The turbo was a GT2556V.
I bought the new Garrett one , exactly the same stock code , from Engine Parts in Bloem for 8000 bucks. The stealers ask 17000 for exact same part, crazy man!
I took out both the cat innerds at Noise Boys in Bloem by cutting two small doors in the cats and then hammering all the cat sht out with a big screwdriver, afterwards just welding back the door flaps, job done!.
The turbo now could be heard ever so slightly, but she pulls lekker strong with the new blower and very little back pressure.
I also blocked off the EGR and took the valve innerds out from the valve body.
I installed and silver soldered in two welch plugs right at the outlet to the egr and also on the top next to the valve body.
The car never smoked and still does not smoke, after the turbo replacement and decat, only slightly under hard acceleration, but thats normal.
I also reconditioned one of the injectors, for 2000 bucs after replacing it with a new one for 5000 rand at the dealers, the old one only needed a new tip and they gave me a warranty as well as proper report of the before and after flow levels. The old injector had suddenly started to give problems with low flow and the engine vibrating and missing.
Hellas
///Member
Firstly, I have not had any codes read on the car yet, neither have I had any software upgrades or chips. The car is throwing no dashboard errors.
Now, after some testing this weekend, I have logged the following 'abnormality' on my car. In every gear there is a slight hesitation exactly on the 3000RPM mark.
What happens is that the turbo starts boosting after 2100RPM up to 3000RPM and then there is a sudden loss of power. The car is however still accelerating, but not so much as with the turbo boosting. I can still reach top speed...eventually.
It is annoying as that is the critical RPM for overtaking etc. This sudden loss of power is also accompanied by the l/100km fuel indicator dropping back about 5 liters (If you understand this), which means that when I accelerate the consumption gauge would be on 16l/100km, then as soon as I hit 3000RPM, the gauge would drop back to 10 or 12l/100km. Any ideas?
Now, after some testing this weekend, I have logged the following 'abnormality' on my car. In every gear there is a slight hesitation exactly on the 3000RPM mark.
What happens is that the turbo starts boosting after 2100RPM up to 3000RPM and then there is a sudden loss of power. The car is however still accelerating, but not so much as with the turbo boosting. I can still reach top speed...eventually.
It is annoying as that is the critical RPM for overtaking etc. This sudden loss of power is also accompanied by the l/100km fuel indicator dropping back about 5 liters (If you understand this), which means that when I accelerate the consumption gauge would be on 16l/100km, then as soon as I hit 3000RPM, the gauge would drop back to 10 or 12l/100km. Any ideas?
Hellas
///Member
UPDATE!!!
Had the oiler serviced at Forsdicks and requested that they have a look at the drop in boost that I get at 3000RPM. Got a single line reply from the dealer: ''The replacement turbo that you put in never boosted to begin with and needs to be replaced. R17500 excl labour. PS: Now pay us R700 for the diagnostics that we did to determine this.'' I'm like wow, never boosted, hu? OK, but reading codes costs me R100 everywhere else. ''No sir, it is more complicated than that.''
Fine, paid for the service and left to speak to the guy from which I got the turbo last year. He pointed me to the guy that he normally use in Somerset West. Malcolm at M Saich. Went there this morning and after the first dyno, I stood on 97kW and 306Nm. Stock should be 110kW and 330Nm. Took him 5 minutes to find the faulty component: The pressure converter. (About R1500 from BMW) Number 1 in the pic:
Malcolm bypassed the pressure converter and then the dyno gave 115kW and 333Nm! No more drop in the boost @3000RPM and she pulls like a train again!
Had the oiler serviced at Forsdicks and requested that they have a look at the drop in boost that I get at 3000RPM. Got a single line reply from the dealer: ''The replacement turbo that you put in never boosted to begin with and needs to be replaced. R17500 excl labour. PS: Now pay us R700 for the diagnostics that we did to determine this.'' I'm like wow, never boosted, hu? OK, but reading codes costs me R100 everywhere else. ''No sir, it is more complicated than that.''
Fine, paid for the service and left to speak to the guy from which I got the turbo last year. He pointed me to the guy that he normally use in Somerset West. Malcolm at M Saich. Went there this morning and after the first dyno, I stood on 97kW and 306Nm. Stock should be 110kW and 330Nm. Took him 5 minutes to find the faulty component: The pressure converter. (About R1500 from BMW) Number 1 in the pic:
Malcolm bypassed the pressure converter and then the dyno gave 115kW and 333Nm! No more drop in the boost @3000RPM and she pulls like a train again!
Hellas
///Member
On my way back from Somerset west this morning, I stopped by Forsdicks to ask for a copy of the diagnostic that they did. They faxed it to me now and it points the fault out: ''Boost pressure actuator/turbocharger. Minimum boost pressure not reached.'' And it continues with a list of possible causes:
1. Pressure converter defective.
2. Actuation pressure converter defective
3. Vacuum supply defective
4. Boost pressure actuator moves stiffly
5. Turbocharger defective
In that given order, they had to tell me first that the turbo needs replacing, instead of just testing the other options first...
1. Pressure converter defective.
2. Actuation pressure converter defective
3. Vacuum supply defective
4. Boost pressure actuator moves stiffly
5. Turbocharger defective
In that given order, they had to tell me first that the turbo needs replacing, instead of just testing the other options first...
Nic_s
///Member
Another good place in Somerset West is Helderberg Autotech (Independent BMW specialists). They are quite busy though. I have also not had them do any work as of yet 'cos they are a bit expensive, but cheaper than BMW. I service my car myself anyway. :thumb:
Glad the car is running good again. Now you don't have to come to hookup's in the station wagon :thumbsup:
Glad the car is running good again. Now you don't have to come to hookup's in the station wagon :thumbsup:
Hellas said:UPDATE!!!
Had the oiler serviced at Forsdicks and requested that they have a look at the drop in boost that I get at 3000RPM. Got a single line reply from the dealer: ''The replacement turbo that you put in never boosted to begin with and needs to be replaced. R17500 excl labour. PS: Now pay us R700 for the diagnostics that we did to determine this.'' I'm like wow, never boosted, hu? OK, but reading codes costs me R100 everywhere else. ''No sir, it is more complicated than that.''
Fine, paid for the service and left to speak to the guy from which I got the turbo last year. He pointed me to the guy that he normally use in Somerset West. Malcolm at M Saich. Went there this morning and after the first dyno, I stood on 97kW and 306Nm. Stock should be 110kW and 330Nm. Took him 5 minutes to find the faulty component: The pressure converter. (About R1500 from BMW) Number 1 in the pic:
Malcolm bypassed the pressure converter and then the dyno gave 115kW and 333Nm! No more drop in the boost @3000RPM and she pulls like a train again!
Sorry to dredge up an old post but I experienced the same issue with my 330d, I opened her up to change the vacuum pipes from the reservoir to the converter then to the turbo as they were badly perished.. Had the misfortune of shopping the pipes that go into port A and B on the converter, finished the job and gave myself a pat on the back, started the car and everything seemed fine... Took it out that nite for a spin and as joining the freeway gave it horns thru 3rd and then 4th and at approx 3500rpm the ecu cut back the fueling as she was over boosting... Bit of a scary moment to see the fueling cut from 20 down to about 5 thou it recovered immediately as I tapped of...
Went home and swopped the pipes the next day and all is back to normal, albeit I feel the car is bit flatter???? Will have to work that gremlin out...Hopefully I didn't put a hole in the cooler or something...
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