Todays video is a bit of a rushed one, we have had to split this video into two parts due to things not quite going to plan! Stay tuned for the strip down of the turbo core on my Audi A3 tdi!
Well done getting that lot off. The ‘hot’ exhaust side = Turbine wheel & housing. The ‘cold’ intake side = Compressor wheel & housing. The vane part is called the Nozzle and in this example it’s variable geometry; the angle and therefore the width between the vanes has a direct effect on turbine speed. The variable geometry gives improved consistency of power, particularly at lower rpm and help with emissions. The new part you’re fitting is what we’d call the Turbo Cartridge. The compressor wheel blades (bent and chipped) have been contacting (dragging) on the housing because of the excessive shaft play; you can see the contact marks on the inner surface of the compressor housing. Just check these scores aren’t too deep as it may affect its efficiency.
I've never pulled a turbo apart... Hadn't even thought about replacing cores, if i have trouble with a turbo i generally just replace the whole unit! Looking forwards to the second part👍
When you buy refurbished turbos that’s generally people that just replace the core and clean it. New turbos can be £3/400. A core can be as cheap as £70. Or in this case it was £100.
Pulled apart turbo last month from my 1.9 tdi because of shaft play . No problems with replacing core. Its way cheaper than visit workshops speciliazed in turbo rebuilds. Just order the correct turbo cartridge , couple hours of work and done. :) Of course, not everyone can do that, hands need to grow from correct place :D btw, core was just 70 euros, factory balanced and still works perfect , even with hard pulls on highway with remap. :) Cheers.
You got the full and no boost positons for the vanes the wrong way round. Full boost is when the vanes are nearly tip to tail, as this give the fastest air flow speed to the turbine. Very important to get the maximum boost point set right as if they do go tip to tail it will strangle the engine and can cause big damage. This is set with the stop screw and really needs to be done on a proper flow bench. This is why so many cars with 'reconditioned' turbos have virtually no boost until over 2000rpm, kind of negating the whole point of a VNT turbo.
Thanks for the video and the explanations. I'm planning on doing the same for my a3. May I ask how many hours it took you (making the assumption I'll just change the turbo by a new one) to complete the job? Is it half a day, a full day? or even several? Cheers.
Great video mate. I need to remove the turbo from my brothers 2008 1.9 tdi bluemotion Golf. Looks to be exactly the same setup ie DPF and EGR cooler. Is it possible to do without dropping or loosening the subframe as I really dont want to remove it
When the vanes are closed you get full boost, when they are open you get none. - When the vanes are closed it causes the exhaust gas's velocity to increase and increases speed on the turbine wheel, you said it backwars! 👍👍
Don't just let the door touch the floor, pull the chain down keeping tension against the garage floor, it won't rattle then. Good job, did my chra swap on A4 B6 1.8t myself, easier the tdi 😉
Pity about the all the time lapse on your videos! Im sure your a very competent mechanic and could show us exactly what your doing! In saying that I do love the videos!!
Great videos mate. Think you might have got the explanation of the waste gate confused... I thought the vanes open to let the exhaust gases bypass the turbine thereby reducing the drive to the compressor and producing less boost?
The actuator controls the amount of airflow into the turbo. It’s mainly so that you can get torque lower down. So when the vanes are only slightly open it creates more pressure which spools up the turbo quicker at low rpms. Then as the revs increase the vanes will open up. That’s how I’ve understood it anyway haha
However do you work on that garden table? bolts and small parts falling through! When a turbo fails with that amount of play its oil starvation and the damaged comp wheel must be in the intercooler, BEWARE
A mechanic friend of mine replaced a turbo core for a friend's BMW, drove fine for about 2 hours then a really horrible turbo noise and something must of hit the new blades and chewed the new core up.. dunno if it could of been a lump of carbon or a bit of old turbo blade.. lol 😓 My mk5 golf GT has a whistle noise, I think it is the turbo but could also have a leak too but cannot find it, even after a boost leak test. I do t have access to a smoke boost leak tester.
Obviously other bits to do, major service, cambelt and waterpump, gearbox oil, brake check, maybe tyres (based on age) and MOT. Should be a really nice car for someone. 👍
Hey mate! Could u tell me what was this turbo model number?{ serial number or smthg like that} I need to change my aswell want to order. Couse mine looks completelly the same can't the see the number in video.
Do a swirl flaps delete they are a nightmare the flaps break off and go in to the engine and kill it or check the flaps to see if there is any play in them
😂😂😂 next video will be : Rebuilding the roller shutter door because it’s got excessive play. Also upgrading with silicone dampeners to shut it the f##k up😡 🤣🤣🤣
I think that is gone beyond a new core, the play was so bad it was rubbing on the compressor housing and exhaust housing. I think a whole new turbo is really in order for this as those housings shouldtn really be reused.
The reason the turbine blades were as you put it " eaten away " is because a foreign object has gone through them breaking the blades Now if the car has an intercooler the debris will be in the cooler if not then the bits will be in the engine somewhere !!!
Yh true , I have this engine in my Leon , Need to sort the fumes out in it , Don't know what it could be because it turbo seems to work fine , it does boost all good , would low fuel be a reason ? , It's done about 300miles (if that) since I've owned it from May last year so not sure if needs a good drive , new remap or something
Your making that turbo core replacement difficult for yourself a LOT. I had the same car but Quattro and replaced the turbo core. Easy. No need to take the manifold off or the exhaust. Just remove the 5 or is it 6 bolts holding the two turbo halves together ,remove inlet pipe and voila the core comes out.
It was more for the video so people can see better what I’m trying to do. Also some of those core bolts will be very hard to get to in situ and with big hands i could end up spending an hour getting one bolt out. Done it that way in the past and it can be quicker. But equally can be harder and more stressful. 👍🏽
Saving Salvage is one of the best youtube videos around. Very informative. I see no harm in adding a small contribution if it may help others. If you have a problem with that or me then be man enough to provide an address and postcode .I`ll gladly come round to accept your apology face to face. @@BarryShite25
@@0120raptor here we go. Internet tough guy. Can't take any criticism yourself? You're happy to dish it out pal! I'll tell ya what, give me your address and I'll come over and you can apologise to me.
