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Phillc's Mk1 Cupra...
- Thread starter Phillc
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Took today of the remove the turbo but back tomorrow but i am of to Spain on Friday untill Tuesday. Yes its cast .
are you talking the exhaust manifold?
cast iron, and a cheap grade at that, which is one of the reasons they all seem to crack
Well spoken to Mark at CRT and he has looked at the turbo and said it failed due to oil contamination and that in his experience it is a common problem on the 1.8T across the VAG range, so he is rebuilding it and adding a larger compressor wheel so it should flow alot better, i am also adding a serviceable oil filter into the oil feed line to try and stop any problems in the future, i will check it every month to begin with to check it as i dont want to cause oil starvation problems.
hmmm, that old chesnut eh?
amazing how k03, k03s. k04's manage to live for 100k miles tho is'nt it
amazing how k03, k03s. k04's manage to live for 100k miles tho is'nt it
Just fancied a change tbh
I dont know Bill, that's just what i was told, Mark did say he was talking to you about an in- line oil filter but due to the access issues you didn't bother with it.
Yeah i remember you mentioning it.
mark suggested one being used as a plug in option, but i explained the hose and its routing, rendering this a non-diy change. it was'nt me not bothering with it.
oil contamination is blamed for turbos demise, yet the rest of the engines bearing survive perfectly well for 100k miles, and std turbos also last pretty well too, on the exact same line! go figure..
I dont subscribe to the "contamination" line personally, as this usually gets invoked the moment a supplied turbo develops a "fault".... and this "oil contamination" deflects a prospective admission of fault from the manufacturer. amazingly the very same lines worked perfectly for 1000's of miles prior to this..... Not a coincidence. No more than excessive oil pressure being blamed on a k03 hybrid being said to be the reason it smoked like a b'stad from new... Crok of BS spouted where the defect was the build itself!
Variable quality is a concern. Check and triple check everything you receive!
oil contamination is blamed for turbos demise, yet the rest of the engines bearing survive perfectly well for 100k miles, and std turbos also last pretty well too, on the exact same line! go figure..
I dont subscribe to the "contamination" line personally, as this usually gets invoked the moment a supplied turbo develops a "fault".... and this "oil contamination" deflects a prospective admission of fault from the manufacturer. amazingly the very same lines worked perfectly for 1000's of miles prior to this..... Not a coincidence. No more than excessive oil pressure being blamed on a k03 hybrid being said to be the reason it smoked like a b'stad from new... Crok of BS spouted where the defect was the build itself!
Variable quality is a concern. Check and triple check everything you receive!
I didn't mean you could'nt be bothered to do it, just that after you discussion with Mark you didn't bother with it
i have access to a large portion of my oil feed pipe so its not an issue for me. Mark is sending the scored shaft back for me to see so i will post a pic so you can see it.There is a independent oil feed from on top of the oil filter housing, if thats what you meant mate.
Not quite,
They had a separate tank with pump that circulated oil to the turbo when the engine was on.
They had a pressure gauge plumbed in too so able to check any problems
It ran independantly so no engine oil or particles in it could enter the turbo, then stock system still ran engine oil
They had a separate tank with pump that circulated oil to the turbo when the engine was on.
They had a pressure gauge plumbed in too so able to check any problems
It ran independantly so no engine oil or particles in it could enter the turbo, then stock system still ran engine oil
Bill/Tim what else would i need for this separate oil feed for the turbo? I think i am going to go for this option.
Pressure gauge
Oil tank - what size?
Oil Cooler
Oil pump - what type and size?
Any info would be great.
Pressure gauge
Oil tank - what size?
Oil Cooler
Oil pump - what type and size?
Any info would be great.
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Phill, I'd stay well away from this sort of idea.
It's going to be a complete nightmare.
Initially you would be supplying cold oil that's thick.
This would take ages to heat up if its only getting circulated around the turbo.
How do you monitor what pressure this is getting, how do you stop oil starvation on hard braking and cornering?
How do you know what pressure to supply?
How do you control this pressure and guard against over pressurisation?
How do you filter the oil that's circulating this and ensure this doesn't block too?
No one else on here has had this sort of issues.
Like Bill said, why do the OEM turbos not need this? Or suffer from these sorts of issues later in life?
It's going to be a complete nightmare.
Initially you would be supplying cold oil that's thick.
This would take ages to heat up if its only getting circulated around the turbo.
How do you monitor what pressure this is getting, how do you stop oil starvation on hard braking and cornering?
How do you know what pressure to supply?
How do you control this pressure and guard against over pressurisation?
How do you filter the oil that's circulating this and ensure this doesn't block too?
No one else on here has had this sort of issues.
Like Bill said, why do the OEM turbos not need this? Or suffer from these sorts of issues later in life?
That's why i am asking the questions Willie, i know nothing about this and have not heard of anyone having fitted it. Surely all oil is cold on start up and warms as the engine/turbo heats up. The problem i have is that i have been given advice from an expert on a subject i know nothing about, should i ignore it? i have no reason to not believe him, all i want to do is avoid any repeat of this.
I know it was and does get done on G40's
some sort of tank possibly baffled with a pick up to small filter with pressure sender tapped into it
If the tank was deep with a pick up low down oil starvation shouldnt be a problem
I know they use very high grade thinner oil when doing this
A pump unit could be specced once the pressure at the turbo was known
Just some sort of thermostatically controlled sandwich plate type arrangement for the oil cooler then.
It would be a lot of work but doable i think
some sort of tank possibly baffled with a pick up to small filter with pressure sender tapped into it
If the tank was deep with a pick up low down oil starvation shouldnt be a problem
I know they use very high grade thinner oil when doing this
A pump unit could be specced once the pressure at the turbo was known
Just some sort of thermostatically controlled sandwich plate type arrangement for the oil cooler then.
It would be a lot of work but doable i think
I totally understand what your saying and would be in the same mind as you if this had happened to me too.
Just giving you the benefit of my hydraulics experience.
simple answer
I would'nt do it myself..
sounds more complex and risk of issues related to it being (a) unknown and (b) independant to engine.
sorry thats not much help.. but I just would'nt do it myself.
I think "oil contamination" is a caviate for its not "our fault" from turbo manufacturers - it does'nt explain why 1000's of 1.8t's dont eat their turbo's, nor their bearings also get damaged by such contamination. the inline filter suggestion of all of them is the least invasive, BUT, also brings with it some unknown of "if" it was to blind the turbo would again suffer bearing issues. If I went this way I would be changing/cleaning/checking the filter often initially to see whats going on and confirming if anything at all is in fact going on. What it would do for you is eliminate the "oil contamination" caviat from CR when/if it goes again tho..
Do more regular oil/filter changes?
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